+ if (arg)
+ memcpy(gctx->iv, ptr, arg);
+
+ enc = EVP_CIPHER_CTX_encrypting(c);
+ if (enc && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
+ return 0;
+
+ gctx->iv_gen = 1;
+ return 1;
+
+ case EVP_CTRL_GCM_IV_GEN:
+ if (gctx->iv_gen == 0 || gctx->key_set == 0)
+ return 0;
+
+ s390x_aes_gcm_setiv(gctx, gctx->iv);
+
+ if (arg <= 0 || arg > gctx->ivlen)
+ arg = gctx->ivlen;
+
+ memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
+ /*
+ * Invocation field will be at least 8 bytes in size and so no need
+ * to check wrap around or increment more than last 8 bytes.
+ */
+ (*(unsigned long long *)(gctx->iv + gctx->ivlen - 8))++;
+ gctx->iv_set = 1;
+ return 1;
+
+ case EVP_CTRL_GCM_SET_IV_INV:
+ enc = EVP_CIPHER_CTX_encrypting(c);
+ if (gctx->iv_gen == 0 || gctx->key_set == 0 || enc)
+ return 0;
+
+ memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
+ s390x_aes_gcm_setiv(gctx, gctx->iv);
+ gctx->iv_set = 1;
+ return 1;
+
+ case EVP_CTRL_AEAD_TLS1_AAD:
+ /* Save the aad for later use. */
+ if (arg != EVP_AEAD_TLS1_AAD_LEN)
+ return 0;
+
+ buf = EVP_CIPHER_CTX_buf_noconst(c);
+ memcpy(buf, ptr, arg);
+ gctx->tls_aad_len = arg;
+
+ len = buf[arg - 2] << 8 | buf[arg - 1];
+ /* Correct length for explicit iv. */
+ if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN)
+ return 0;
+ len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
+
+ /* If decrypting correct for tag too. */
+ enc = EVP_CIPHER_CTX_encrypting(c);
+ if (!enc) {
+ if (len < EVP_GCM_TLS_TAG_LEN)
+ return 0;
+ len -= EVP_GCM_TLS_TAG_LEN;
+ }
+ buf[arg - 2] = len >> 8;
+ buf[arg - 1] = len & 0xff;
+ /* Extra padding: tag appended to record. */
+ return EVP_GCM_TLS_TAG_LEN;
+
+ case EVP_CTRL_COPY:
+ out = ptr;
+ gctx_out = EVP_C_DATA(S390X_AES_GCM_CTX, out);
+ iv = EVP_CIPHER_CTX_iv_noconst(c);
+
+ if (gctx->iv == iv) {
+ gctx_out->iv = EVP_CIPHER_CTX_iv_noconst(out);
+ } else {
+ len = S390X_gcm_ivpadlen(gctx->ivlen);
+
+ gctx_out->iv = OPENSSL_malloc(len);
+ if (gctx_out->iv == NULL)
+ return 0;
+
+ memcpy(gctx_out->iv, gctx->iv, len);
+ }
+ return 1;
+
+ default:
+ return -1;
+ }
+}
+
+/*-
+ * Set key and/or iv. Returns 1 on success. Otherwise 0 is returned.
+ */
+static int s390x_aes_gcm_init_key(EVP_CIPHER_CTX *ctx,
+ const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx);
+ int keylen;
+
+ if (iv == NULL && key == NULL)
+ return 1;
+
+ if (key != NULL) {
+ keylen = EVP_CIPHER_CTX_key_length(ctx);
+ memcpy(&gctx->kma.param.k, key, keylen);
+
+ gctx->fc = S390X_AES_FC(keylen);
+ if (!enc)
+ gctx->fc |= S390X_DECRYPT;
+
+ if (iv == NULL && gctx->iv_set)
+ iv = gctx->iv;
+
+ if (iv != NULL) {
+ s390x_aes_gcm_setiv(gctx, iv);
+ gctx->iv_set = 1;
+ }
+ gctx->key_set = 1;
+ } else {
+ if (gctx->key_set)
+ s390x_aes_gcm_setiv(gctx, iv);
+ else
+ memcpy(gctx->iv, iv, gctx->ivlen);
+
+ gctx->iv_set = 1;
+ gctx->iv_gen = 0;
+ }
+ return 1;
+}
+
+/*-
+ * En/de-crypt and authenticate TLS packet. Returns the number of bytes written
+ * if successful. Otherwise -1 is returned. Code is big-endian.
+ */
+static int s390x_aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx);
+ const unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx);
+ const int enc = EVP_CIPHER_CTX_encrypting(ctx);
+ int rv = -1;
+
+ if (out != in || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN))
+ return -1;
+
+ if (EVP_CIPHER_CTX_ctrl(ctx, enc ? EVP_CTRL_GCM_IV_GEN
+ : EVP_CTRL_GCM_SET_IV_INV,
+ EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
+ goto err;
+
+ in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
+ out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
+ len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
+
+ gctx->kma.param.taadl = gctx->tls_aad_len << 3;
+ gctx->kma.param.tpcl = len << 3;
+ s390x_kma(buf, gctx->tls_aad_len, in, len, out,
+ gctx->fc | S390X_KMA_LAAD | S390X_KMA_LPC, &gctx->kma.param);
+
+ if (enc) {
+ memcpy(out + len, gctx->kma.param.t.b, EVP_GCM_TLS_TAG_LEN);
+ rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
+ } else {
+ if (CRYPTO_memcmp(gctx->kma.param.t.b, in + len,
+ EVP_GCM_TLS_TAG_LEN)) {
+ OPENSSL_cleanse(out, len);
+ goto err;
+ }
+ rv = len;
+ }
+err:
+ gctx->iv_set = 0;
+ gctx->tls_aad_len = -1;
+ return rv;
+}
+
+/*-
+ * Called from EVP layer to initialize context, process additional
+ * authenticated data, en/de-crypt plain/cipher-text and authenticate
+ * ciphertext or process a TLS packet, depending on context. Returns bytes
+ * written on success. Otherwise -1 is returned. Code is big-endian.
+ */
+static int s390x_aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, ctx);
+ unsigned char *buf, tmp[16];
+ int enc;
+
+ if (!gctx->key_set)
+ return -1;
+
+ if (gctx->tls_aad_len >= 0)
+ return s390x_aes_gcm_tls_cipher(ctx, out, in, len);
+
+ if (!gctx->iv_set)
+ return -1;
+
+ if (in != NULL) {
+ if (out == NULL) {
+ if (s390x_aes_gcm_aad(gctx, in, len))
+ return -1;
+ } else {
+ if (s390x_aes_gcm(gctx, in, out, len))
+ return -1;
+ }
+ return len;
+ } else {
+ gctx->kma.param.taadl <<= 3;
+ gctx->kma.param.tpcl <<= 3;
+ s390x_kma(gctx->ares, gctx->areslen, gctx->mres, gctx->mreslen, tmp,
+ gctx->fc | S390X_KMA_LAAD | S390X_KMA_LPC, &gctx->kma.param);
+ /* recall that we already did en-/decrypt gctx->mres
+ * and returned it to caller... */
+ OPENSSL_cleanse(tmp, gctx->mreslen);
+ gctx->iv_set = 0;
+
+ enc = EVP_CIPHER_CTX_encrypting(ctx);
+ if (enc) {
+ gctx->taglen = 16;
+ } else {
+ if (gctx->taglen < 0)
+ return -1;
+
+ buf = EVP_CIPHER_CTX_buf_noconst(ctx);
+ if (CRYPTO_memcmp(buf, gctx->kma.param.t.b, gctx->taglen))
+ return -1;
+ }
+ return 0;
+ }
+}
+
+static int s390x_aes_gcm_cleanup(EVP_CIPHER_CTX *c)
+{
+ S390X_AES_GCM_CTX *gctx = EVP_C_DATA(S390X_AES_GCM_CTX, c);
+ const unsigned char *iv;
+
+ if (gctx == NULL)
+ return 0;
+
+ iv = EVP_CIPHER_CTX_iv(c);
+ if (iv != gctx->iv)
+ OPENSSL_free(gctx->iv);
+
+ OPENSSL_cleanse(gctx, sizeof(*gctx));
+ return 1;
+}
+
+# define S390X_AES_XTS_CTX EVP_AES_XTS_CTX
+# define S390X_aes_128_xts_CAPABLE 1 /* checked by callee */
+# define S390X_aes_256_xts_CAPABLE 1
+
+# define s390x_aes_xts_init_key aes_xts_init_key
+static int s390x_aes_xts_init_key(EVP_CIPHER_CTX *ctx,
+ const unsigned char *key,
+ const unsigned char *iv, int enc);
+# define s390x_aes_xts_cipher aes_xts_cipher
+static int s390x_aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len);
+# define s390x_aes_xts_ctrl aes_xts_ctrl
+static int s390x_aes_xts_ctrl(EVP_CIPHER_CTX *, int type, int arg, void *ptr);
+# define s390x_aes_xts_cleanup aes_xts_cleanup
+
+# define S390X_aes_128_ccm_CAPABLE (S390X_aes_128_CAPABLE && \
+ (OPENSSL_s390xcap_P.kmac[0] & \
+ S390X_CAPBIT(S390X_AES_128)))
+# define S390X_aes_192_ccm_CAPABLE (S390X_aes_192_CAPABLE && \
+ (OPENSSL_s390xcap_P.kmac[0] & \
+ S390X_CAPBIT(S390X_AES_192)))
+# define S390X_aes_256_ccm_CAPABLE (S390X_aes_256_CAPABLE && \
+ (OPENSSL_s390xcap_P.kmac[0] & \
+ S390X_CAPBIT(S390X_AES_256)))
+
+# define S390X_CCM_AAD_FLAG 0x40
+
+/*-
+ * Set nonce and length fields. Code is big-endian.
+ */
+static inline void s390x_aes_ccm_setiv(S390X_AES_CCM_CTX *ctx,
+ const unsigned char *nonce,
+ size_t mlen)
+{
+ ctx->aes.ccm.nonce.b[0] &= ~S390X_CCM_AAD_FLAG;
+ ctx->aes.ccm.nonce.g[1] = mlen;
+ memcpy(ctx->aes.ccm.nonce.b + 1, nonce, 15 - ctx->aes.ccm.l);
+}
+
+/*-
+ * Process additional authenticated data. Code is big-endian.
+ */
+static void s390x_aes_ccm_aad(S390X_AES_CCM_CTX *ctx, const unsigned char *aad,
+ size_t alen)
+{
+ unsigned char *ptr;
+ int i, rem;
+
+ if (!alen)
+ return;
+
+ ctx->aes.ccm.nonce.b[0] |= S390X_CCM_AAD_FLAG;
+
+ /* Suppress 'type-punned pointer dereference' warning. */
+ ptr = ctx->aes.ccm.buf.b;
+
+ if (alen < ((1 << 16) - (1 << 8))) {
+ *(uint16_t *)ptr = alen;
+ i = 2;
+ } else if (sizeof(alen) == 8
+ && alen >= (size_t)1 << (32 % (sizeof(alen) * 8))) {
+ *(uint16_t *)ptr = 0xffff;
+ *(uint64_t *)(ptr + 2) = alen;
+ i = 10;
+ } else {
+ *(uint16_t *)ptr = 0xfffe;
+ *(uint32_t *)(ptr + 2) = alen;
+ i = 6;
+ }
+
+ while (i < 16 && alen) {
+ ctx->aes.ccm.buf.b[i] = *aad;
+ ++aad;
+ --alen;
+ ++i;
+ }
+ while (i < 16) {
+ ctx->aes.ccm.buf.b[i] = 0;
+ ++i;
+ }
+
+ ctx->aes.ccm.kmac_param.icv.g[0] = 0;
+ ctx->aes.ccm.kmac_param.icv.g[1] = 0;
+ s390x_kmac(ctx->aes.ccm.nonce.b, 32, ctx->aes.ccm.fc,
+ &ctx->aes.ccm.kmac_param);
+ ctx->aes.ccm.blocks += 2;
+
+ rem = alen & 0xf;
+ alen &= ~(size_t)0xf;
+ if (alen) {
+ s390x_kmac(aad, alen, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param);
+ ctx->aes.ccm.blocks += alen >> 4;
+ aad += alen;
+ }
+ if (rem) {
+ for (i = 0; i < rem; i++)
+ ctx->aes.ccm.kmac_param.icv.b[i] ^= aad[i];
+
+ s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16,
+ ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc,
+ ctx->aes.ccm.kmac_param.k);
+ ctx->aes.ccm.blocks++;
+ }
+}
+
+/*-
+ * En/de-crypt plain/cipher-text. Compute tag from plaintext. Returns 0 for
+ * success.
+ */
+static int s390x_aes_ccm(S390X_AES_CCM_CTX *ctx, const unsigned char *in,
+ unsigned char *out, size_t len, int enc)
+{
+ size_t n, rem;
+ unsigned int i, l, num;
+ unsigned char flags;
+
+ flags = ctx->aes.ccm.nonce.b[0];
+ if (!(flags & S390X_CCM_AAD_FLAG)) {
+ s390x_km(ctx->aes.ccm.nonce.b, 16, ctx->aes.ccm.kmac_param.icv.b,
+ ctx->aes.ccm.fc, ctx->aes.ccm.kmac_param.k);
+ ctx->aes.ccm.blocks++;
+ }
+ l = flags & 0x7;
+ ctx->aes.ccm.nonce.b[0] = l;
+
+ /*-
+ * Reconstruct length from encoded length field
+ * and initialize it with counter value.
+ */
+ n = 0;
+ for (i = 15 - l; i < 15; i++) {
+ n |= ctx->aes.ccm.nonce.b[i];
+ ctx->aes.ccm.nonce.b[i] = 0;
+ n <<= 8;
+ }
+ n |= ctx->aes.ccm.nonce.b[15];
+ ctx->aes.ccm.nonce.b[15] = 1;
+
+ if (n != len)
+ return -1; /* length mismatch */
+
+ if (enc) {
+ /* Two operations per block plus one for tag encryption */
+ ctx->aes.ccm.blocks += (((len + 15) >> 4) << 1) + 1;
+ if (ctx->aes.ccm.blocks > (1ULL << 61))
+ return -2; /* too much data */
+ }
+
+ num = 0;
+ rem = len & 0xf;
+ len &= ~(size_t)0xf;
+
+ if (enc) {
+ /* mac-then-encrypt */
+ if (len)
+ s390x_kmac(in, len, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param);
+ if (rem) {
+ for (i = 0; i < rem; i++)
+ ctx->aes.ccm.kmac_param.icv.b[i] ^= in[len + i];
+
+ s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16,
+ ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc,
+ ctx->aes.ccm.kmac_param.k);
+ }
+
+ CRYPTO_ctr128_encrypt_ctr32(in, out, len + rem, &ctx->aes.key.k,
+ ctx->aes.ccm.nonce.b, ctx->aes.ccm.buf.b,
+ &num, (ctr128_f)AES_ctr32_encrypt);
+ } else {
+ /* decrypt-then-mac */
+ CRYPTO_ctr128_encrypt_ctr32(in, out, len + rem, &ctx->aes.key.k,
+ ctx->aes.ccm.nonce.b, ctx->aes.ccm.buf.b,
+ &num, (ctr128_f)AES_ctr32_encrypt);
+
+ if (len)
+ s390x_kmac(out, len, ctx->aes.ccm.fc, &ctx->aes.ccm.kmac_param);
+ if (rem) {
+ for (i = 0; i < rem; i++)
+ ctx->aes.ccm.kmac_param.icv.b[i] ^= out[len + i];
+
+ s390x_km(ctx->aes.ccm.kmac_param.icv.b, 16,
+ ctx->aes.ccm.kmac_param.icv.b, ctx->aes.ccm.fc,
+ ctx->aes.ccm.kmac_param.k);
+ }
+ }
+ /* encrypt tag */
+ for (i = 15 - l; i < 16; i++)
+ ctx->aes.ccm.nonce.b[i] = 0;
+
+ s390x_km(ctx->aes.ccm.nonce.b, 16, ctx->aes.ccm.buf.b, ctx->aes.ccm.fc,
+ ctx->aes.ccm.kmac_param.k);
+ ctx->aes.ccm.kmac_param.icv.g[0] ^= ctx->aes.ccm.buf.g[0];
+ ctx->aes.ccm.kmac_param.icv.g[1] ^= ctx->aes.ccm.buf.g[1];
+
+ ctx->aes.ccm.nonce.b[0] = flags; /* restore flags field */
+ return 0;
+}
+
+/*-
+ * En/de-crypt and authenticate TLS packet. Returns the number of bytes written
+ * if successful. Otherwise -1 is returned.
+ */
+static int s390x_aes_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx);
+ unsigned char *ivec = EVP_CIPHER_CTX_iv_noconst(ctx);
+ unsigned char *buf = EVP_CIPHER_CTX_buf_noconst(ctx);
+ const int enc = EVP_CIPHER_CTX_encrypting(ctx);
+
+ if (out != in
+ || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->aes.ccm.m))
+ return -1;
+
+ if (enc) {
+ /* Set explicit iv (sequence number). */
+ memcpy(out, buf, EVP_CCM_TLS_EXPLICIT_IV_LEN);
+ }
+
+ len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->aes.ccm.m;
+ /*-
+ * Get explicit iv (sequence number). We already have fixed iv
+ * (server/client_write_iv) here.
+ */
+ memcpy(ivec + EVP_CCM_TLS_FIXED_IV_LEN, in, EVP_CCM_TLS_EXPLICIT_IV_LEN);
+ s390x_aes_ccm_setiv(cctx, ivec, len);
+
+ /* Process aad (sequence number|type|version|length) */
+ s390x_aes_ccm_aad(cctx, buf, cctx->aes.ccm.tls_aad_len);
+
+ in += EVP_CCM_TLS_EXPLICIT_IV_LEN;
+ out += EVP_CCM_TLS_EXPLICIT_IV_LEN;
+
+ if (enc) {
+ if (s390x_aes_ccm(cctx, in, out, len, enc))
+ return -1;
+
+ memcpy(out + len, cctx->aes.ccm.kmac_param.icv.b, cctx->aes.ccm.m);
+ return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->aes.ccm.m;
+ } else {
+ if (!s390x_aes_ccm(cctx, in, out, len, enc)) {
+ if (!CRYPTO_memcmp(cctx->aes.ccm.kmac_param.icv.b, in + len,
+ cctx->aes.ccm.m))
+ return len;
+ }
+
+ OPENSSL_cleanse(out, len);
+ return -1;
+ }
+}
+
+/*-
+ * Set key and flag field and/or iv. Returns 1 if successful. Otherwise 0 is
+ * returned.
+ */
+static int s390x_aes_ccm_init_key(EVP_CIPHER_CTX *ctx,
+ const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx);
+ unsigned char *ivec;
+ int keylen;
+
+ if (iv == NULL && key == NULL)
+ return 1;
+
+ if (key != NULL) {
+ keylen = EVP_CIPHER_CTX_key_length(ctx);
+ cctx->aes.ccm.fc = S390X_AES_FC(keylen);
+ memcpy(cctx->aes.ccm.kmac_param.k, key, keylen);
+
+ /* Store encoded m and l. */
+ cctx->aes.ccm.nonce.b[0] = ((cctx->aes.ccm.l - 1) & 0x7)
+ | (((cctx->aes.ccm.m - 2) >> 1) & 0x7) << 3;
+ memset(cctx->aes.ccm.nonce.b + 1, 0,
+ sizeof(cctx->aes.ccm.nonce.b));
+ cctx->aes.ccm.blocks = 0;
+
+ cctx->aes.ccm.key_set = 1;
+ }
+
+ if (iv != NULL) {
+ ivec = EVP_CIPHER_CTX_iv_noconst(ctx);
+ memcpy(ivec, iv, 15 - cctx->aes.ccm.l);
+
+ cctx->aes.ccm.iv_set = 1;
+ }
+
+ return 1;
+}
+
+/*-
+ * Called from EVP layer to initialize context, process additional
+ * authenticated data, en/de-crypt plain/cipher-text and authenticate
+ * plaintext or process a TLS packet, depending on context. Returns bytes
+ * written on success. Otherwise -1 is returned.
+ */
+static int s390x_aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, ctx);
+ const int enc = EVP_CIPHER_CTX_encrypting(ctx);
+ int rv;
+ unsigned char *buf, *ivec;
+
+ if (!cctx->aes.ccm.key_set)
+ return -1;
+
+ if (cctx->aes.ccm.tls_aad_len >= 0)
+ return s390x_aes_ccm_tls_cipher(ctx, out, in, len);
+
+ /*-
+ * Final(): Does not return any data. Recall that ccm is mac-then-encrypt
+ * so integrity must be checked already at Update() i.e., before
+ * potentially corrupted data is output.
+ */
+ if (in == NULL && out != NULL)
+ return 0;
+
+ if (!cctx->aes.ccm.iv_set)
+ return -1;
+
+ if (!enc && !cctx->aes.ccm.tag_set)
+ return -1;
+
+ if (out == NULL) {
+ /* Update(): Pass message length. */
+ if (in == NULL) {
+ ivec = EVP_CIPHER_CTX_iv_noconst(ctx);
+ s390x_aes_ccm_setiv(cctx, ivec, len);
+
+ cctx->aes.ccm.len_set = 1;
+ return len;
+ }
+
+ /* Update(): Process aad. */
+ if (!cctx->aes.ccm.len_set && len)
+ return -1;
+
+ s390x_aes_ccm_aad(cctx, in, len);
+ return len;
+ }
+
+ /* Update(): Process message. */
+
+ if (!cctx->aes.ccm.len_set) {
+ /*-
+ * In case message length was not previously set explicitely via
+ * Update(), set it now.
+ */
+ ivec = EVP_CIPHER_CTX_iv_noconst(ctx);
+ s390x_aes_ccm_setiv(cctx, ivec, len);
+
+ cctx->aes.ccm.len_set = 1;
+ }
+
+ if (enc) {
+ if (s390x_aes_ccm(cctx, in, out, len, enc))
+ return -1;
+
+ cctx->aes.ccm.tag_set = 1;
+ return len;
+ } else {
+ rv = -1;
+
+ if (!s390x_aes_ccm(cctx, in, out, len, enc)) {
+ buf = EVP_CIPHER_CTX_buf_noconst(ctx);
+ if (!CRYPTO_memcmp(cctx->aes.ccm.kmac_param.icv.b, buf,
+ cctx->aes.ccm.m))
+ rv = len;
+ }
+
+ if (rv == -1)
+ OPENSSL_cleanse(out, len);
+
+ cctx->aes.ccm.iv_set = 0;
+ cctx->aes.ccm.tag_set = 0;
+ cctx->aes.ccm.len_set = 0;
+ return rv;
+ }
+}
+
+/*-
+ * Performs various operations on the context structure depending on control
+ * type. Returns 1 for success, 0 for failure and -1 for unknown control type.
+ * Code is big-endian.
+ */
+static int s390x_aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
+{
+ S390X_AES_CCM_CTX *cctx = EVP_C_DATA(S390X_AES_CCM_CTX, c);
+ unsigned char *buf, *iv;
+ int enc, len;
+
+ switch (type) {
+ case EVP_CTRL_INIT:
+ cctx->aes.ccm.key_set = 0;
+ cctx->aes.ccm.iv_set = 0;
+ cctx->aes.ccm.l = 8;
+ cctx->aes.ccm.m = 12;
+ cctx->aes.ccm.tag_set = 0;
+ cctx->aes.ccm.len_set = 0;
+ cctx->aes.ccm.tls_aad_len = -1;
+ return 1;
+
+ case EVP_CTRL_AEAD_TLS1_AAD:
+ if (arg != EVP_AEAD_TLS1_AAD_LEN)
+ return 0;
+
+ /* Save the aad for later use. */
+ buf = EVP_CIPHER_CTX_buf_noconst(c);
+ memcpy(buf, ptr, arg);
+ cctx->aes.ccm.tls_aad_len = arg;
+
+ len = *(uint16_t *)(buf + arg - 2);
+ if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN)
+ return 0;
+
+ /* Correct length for explicit iv. */
+ len -= EVP_CCM_TLS_EXPLICIT_IV_LEN;
+
+ enc = EVP_CIPHER_CTX_encrypting(c);
+ if (!enc) {
+ if (len < cctx->aes.ccm.m)
+ return 0;
+
+ /* Correct length for tag. */
+ len -= cctx->aes.ccm.m;
+ }
+
+ *(uint16_t *)(buf + arg - 2) = len;
+ /* Extra padding: tag appended to record. */
+ return cctx->aes.ccm.m;
+
+ case EVP_CTRL_CCM_SET_IV_FIXED:
+ if (arg != EVP_CCM_TLS_FIXED_IV_LEN)
+ return 0;
+
+ /* Copy to first part of the iv. */
+ iv = EVP_CIPHER_CTX_iv_noconst(c);
+ memcpy(iv, ptr, arg);
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_IVLEN:
+ arg = 15 - arg;
+ /* fall-through */
+
+ case EVP_CTRL_CCM_SET_L:
+ if (arg < 2 || arg > 8)
+ return 0;
+
+ cctx->aes.ccm.l = arg;
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_TAG:
+ if ((arg & 1) || arg < 4 || arg > 16)
+ return 0;
+
+ enc = EVP_CIPHER_CTX_encrypting(c);
+ if (enc && ptr)
+ return 0;
+
+ if (ptr) {
+ cctx->aes.ccm.tag_set = 1;
+ buf = EVP_CIPHER_CTX_buf_noconst(c);
+ memcpy(buf, ptr, arg);
+ }
+
+ cctx->aes.ccm.m = arg;
+ return 1;
+
+ case EVP_CTRL_AEAD_GET_TAG:
+ enc = EVP_CIPHER_CTX_encrypting(c);
+ if (!enc || !cctx->aes.ccm.tag_set)
+ return 0;
+
+ if(arg < cctx->aes.ccm.m)
+ return 0;
+
+ memcpy(ptr, cctx->aes.ccm.kmac_param.icv.b, cctx->aes.ccm.m);
+ cctx->aes.ccm.tag_set = 0;
+ cctx->aes.ccm.iv_set = 0;
+ cctx->aes.ccm.len_set = 0;
+ return 1;
+
+ case EVP_CTRL_COPY:
+ return 1;
+
+ default:
+ return -1;
+ }
+}
+
+# define s390x_aes_ccm_cleanup aes_ccm_cleanup
+
+# ifndef OPENSSL_NO_OCB
+# define S390X_AES_OCB_CTX EVP_AES_OCB_CTX
+# define S390X_aes_128_ocb_CAPABLE 0
+# define S390X_aes_192_ocb_CAPABLE 0
+# define S390X_aes_256_ocb_CAPABLE 0
+
+# define s390x_aes_ocb_init_key aes_ocb_init_key
+static int s390x_aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc);
+# define s390x_aes_ocb_cipher aes_ocb_cipher
+static int s390x_aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len);
+# define s390x_aes_ocb_cleanup aes_ocb_cleanup
+static int s390x_aes_ocb_cleanup(EVP_CIPHER_CTX *);
+# define s390x_aes_ocb_ctrl aes_ocb_ctrl
+static int s390x_aes_ocb_ctrl(EVP_CIPHER_CTX *, int type, int arg, void *ptr);
+# endif
+
+# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode, \
+ MODE,flags) \
+static const EVP_CIPHER s390x_aes_##keylen##_##mode = { \
+ nid##_##keylen##_##nmode,blocksize, \
+ keylen / 8, \
+ ivlen, \
+ flags | EVP_CIPH_##MODE##_MODE, \
+ s390x_aes_##mode##_init_key, \
+ s390x_aes_##mode##_cipher, \
+ NULL, \
+ sizeof(S390X_AES_##MODE##_CTX), \
+ NULL, \
+ NULL, \
+ NULL, \
+ NULL \
+}; \
+static const EVP_CIPHER aes_##keylen##_##mode = { \
+ nid##_##keylen##_##nmode, \
+ blocksize, \
+ keylen / 8, \
+ ivlen, \
+ flags | EVP_CIPH_##MODE##_MODE, \
+ aes_init_key, \
+ aes_##mode##_cipher, \
+ NULL, \
+ sizeof(EVP_AES_KEY), \
+ NULL, \
+ NULL, \
+ NULL, \
+ NULL \
+}; \
+const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
+{ \
+ return S390X_aes_##keylen##_##mode##_CAPABLE ? \
+ &s390x_aes_##keylen##_##mode : &aes_##keylen##_##mode; \
+}
+
+# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags)\
+static const EVP_CIPHER s390x_aes_##keylen##_##mode = { \
+ nid##_##keylen##_##mode, \
+ blocksize, \
+ (EVP_CIPH_##MODE##_MODE == EVP_CIPH_XTS_MODE ? 2 : 1) * keylen / 8, \
+ ivlen, \
+ flags | EVP_CIPH_##MODE##_MODE, \
+ s390x_aes_##mode##_init_key, \
+ s390x_aes_##mode##_cipher, \
+ s390x_aes_##mode##_cleanup, \
+ sizeof(S390X_AES_##MODE##_CTX), \
+ NULL, \
+ NULL, \
+ s390x_aes_##mode##_ctrl, \
+ NULL \
+}; \
+static const EVP_CIPHER aes_##keylen##_##mode = { \
+ nid##_##keylen##_##mode,blocksize, \
+ (EVP_CIPH_##MODE##_MODE == EVP_CIPH_XTS_MODE ? 2 : 1) * keylen / 8, \
+ ivlen, \
+ flags | EVP_CIPH_##MODE##_MODE, \
+ aes_##mode##_init_key, \
+ aes_##mode##_cipher, \
+ aes_##mode##_cleanup, \
+ sizeof(EVP_AES_##MODE##_CTX), \
+ NULL, \
+ NULL, \
+ aes_##mode##_ctrl, \
+ NULL \
+}; \
+const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
+{ \
+ return S390X_aes_##keylen##_##mode##_CAPABLE ? \
+ &s390x_aes_##keylen##_##mode : &aes_##keylen##_##mode; \
+}
+
+#else
+
+# define BLOCK_CIPHER_generic(nid,keylen,blocksize,ivlen,nmode,mode,MODE,flags) \
+static const EVP_CIPHER aes_##keylen##_##mode = { \
+ nid##_##keylen##_##nmode,blocksize,keylen/8,ivlen, \
+ flags|EVP_CIPH_##MODE##_MODE, \
+ aes_init_key, \
+ aes_##mode##_cipher, \
+ NULL, \
+ sizeof(EVP_AES_KEY), \
+ NULL,NULL,NULL,NULL }; \
+const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
+{ return &aes_##keylen##_##mode; }
+
+# define BLOCK_CIPHER_custom(nid,keylen,blocksize,ivlen,mode,MODE,flags) \
+static const EVP_CIPHER aes_##keylen##_##mode = { \
+ nid##_##keylen##_##mode,blocksize, \
+ (EVP_CIPH_##MODE##_MODE==EVP_CIPH_XTS_MODE?2:1)*keylen/8, ivlen, \
+ flags|EVP_CIPH_##MODE##_MODE, \
+ aes_##mode##_init_key, \
+ aes_##mode##_cipher, \
+ aes_##mode##_cleanup, \
+ sizeof(EVP_AES_##MODE##_CTX), \
+ NULL,NULL,aes_##mode##_ctrl,NULL }; \
+const EVP_CIPHER *EVP_aes_##keylen##_##mode(void) \
+{ return &aes_##keylen##_##mode; }
+
+#endif
+
+#if defined(OPENSSL_CPUID_OBJ) && (defined(__arm__) || defined(__arm) || defined(__aarch64__))
+# include "arm_arch.h"
+# if __ARM_MAX_ARCH__>=7
+# if defined(BSAES_ASM)
+# define BSAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON)
+# endif
+# if defined(VPAES_ASM)
+# define VPAES_CAPABLE (OPENSSL_armcap_P & ARMV7_NEON)
+# endif
+# define HWAES_CAPABLE (OPENSSL_armcap_P & ARMV8_AES)
+# define HWAES_set_encrypt_key aes_v8_set_encrypt_key
+# define HWAES_set_decrypt_key aes_v8_set_decrypt_key
+# define HWAES_encrypt aes_v8_encrypt
+# define HWAES_decrypt aes_v8_decrypt
+# define HWAES_cbc_encrypt aes_v8_cbc_encrypt
+# define HWAES_ctr32_encrypt_blocks aes_v8_ctr32_encrypt_blocks
+# endif
+#endif
+
+#if defined(HWAES_CAPABLE)
+int HWAES_set_encrypt_key(const unsigned char *userKey, const int bits,
+ AES_KEY *key);
+int HWAES_set_decrypt_key(const unsigned char *userKey, const int bits,
+ AES_KEY *key);
+void HWAES_encrypt(const unsigned char *in, unsigned char *out,
+ const AES_KEY *key);
+void HWAES_decrypt(const unsigned char *in, unsigned char *out,
+ const AES_KEY *key);
+void HWAES_cbc_encrypt(const unsigned char *in, unsigned char *out,
+ size_t length, const AES_KEY *key,
+ unsigned char *ivec, const int enc);
+void HWAES_ctr32_encrypt_blocks(const unsigned char *in, unsigned char *out,
+ size_t len, const AES_KEY *key,
+ const unsigned char ivec[16]);
+void HWAES_xts_encrypt(const unsigned char *inp, unsigned char *out,
+ size_t len, const AES_KEY *key1,
+ const AES_KEY *key2, const unsigned char iv[16]);
+void HWAES_xts_decrypt(const unsigned char *inp, unsigned char *out,
+ size_t len, const AES_KEY *key1,
+ const AES_KEY *key2, const unsigned char iv[16]);
+#endif
+
+#define BLOCK_CIPHER_generic_pack(nid,keylen,flags) \
+ BLOCK_CIPHER_generic(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
+ BLOCK_CIPHER_generic(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
+ BLOCK_CIPHER_generic(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
+ BLOCK_CIPHER_generic(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
+ BLOCK_CIPHER_generic(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
+ BLOCK_CIPHER_generic(nid,keylen,1,16,cfb8,cfb8,CFB,flags) \
+ BLOCK_CIPHER_generic(nid,keylen,1,16,ctr,ctr,CTR,flags)
+
+static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ int ret, mode;
+ EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
+
+ mode = EVP_CIPHER_CTX_mode(ctx);
+ if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE)
+ && !enc) {
+#ifdef HWAES_CAPABLE
+ if (HWAES_CAPABLE) {
+ ret = HWAES_set_decrypt_key(key,
+ EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &dat->ks.ks);
+ dat->block = (block128_f) HWAES_decrypt;
+ dat->stream.cbc = NULL;
+# ifdef HWAES_cbc_encrypt
+ if (mode == EVP_CIPH_CBC_MODE)
+ dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt;
+# endif
+ } else
+#endif
+#ifdef BSAES_CAPABLE
+ if (BSAES_CAPABLE && mode == EVP_CIPH_CBC_MODE) {
+ ret = AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &dat->ks.ks);
+ dat->block = (block128_f) AES_decrypt;
+ dat->stream.cbc = (cbc128_f) bsaes_cbc_encrypt;
+ } else
+#endif
+#ifdef VPAES_CAPABLE
+ if (VPAES_CAPABLE) {
+ ret = vpaes_set_decrypt_key(key,
+ EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &dat->ks.ks);
+ dat->block = (block128_f) vpaes_decrypt;
+ dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
+ (cbc128_f) vpaes_cbc_encrypt : NULL;
+ } else
+#endif
+ {
+ ret = AES_set_decrypt_key(key,
+ EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &dat->ks.ks);
+ dat->block = (block128_f) AES_decrypt;
+ dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
+ (cbc128_f) AES_cbc_encrypt : NULL;
+ }
+ } else
+#ifdef HWAES_CAPABLE
+ if (HWAES_CAPABLE) {
+ ret = HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &dat->ks.ks);
+ dat->block = (block128_f) HWAES_encrypt;
+ dat->stream.cbc = NULL;
+# ifdef HWAES_cbc_encrypt
+ if (mode == EVP_CIPH_CBC_MODE)
+ dat->stream.cbc = (cbc128_f) HWAES_cbc_encrypt;
+ else
+# endif
+# ifdef HWAES_ctr32_encrypt_blocks
+ if (mode == EVP_CIPH_CTR_MODE)
+ dat->stream.ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks;
+ else
+# endif
+ (void)0; /* terminate potentially open 'else' */
+ } else
+#endif
+#ifdef BSAES_CAPABLE
+ if (BSAES_CAPABLE && mode == EVP_CIPH_CTR_MODE) {
+ ret = AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &dat->ks.ks);
+ dat->block = (block128_f) AES_encrypt;
+ dat->stream.ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks;
+ } else
+#endif
+#ifdef VPAES_CAPABLE
+ if (VPAES_CAPABLE) {
+ ret = vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &dat->ks.ks);
+ dat->block = (block128_f) vpaes_encrypt;
+ dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
+ (cbc128_f) vpaes_cbc_encrypt : NULL;
+ } else
+#endif
+ {
+ ret = AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &dat->ks.ks);
+ dat->block = (block128_f) AES_encrypt;
+ dat->stream.cbc = mode == EVP_CIPH_CBC_MODE ?
+ (cbc128_f) AES_cbc_encrypt : NULL;
+#ifdef AES_CTR_ASM
+ if (mode == EVP_CIPH_CTR_MODE)
+ dat->stream.ctr = (ctr128_f) AES_ctr32_encrypt;
+#endif
+ }
+
+ if (ret < 0) {
+ EVPerr(EVP_F_AES_INIT_KEY, EVP_R_AES_KEY_SETUP_FAILED);
+ return 0;
+ }
+
+ return 1;
+}
+
+static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
+
+ if (dat->stream.cbc)
+ (*dat->stream.cbc) (in, out, len, &dat->ks,
+ EVP_CIPHER_CTX_iv_noconst(ctx),
+ EVP_CIPHER_CTX_encrypting(ctx));
+ else if (EVP_CIPHER_CTX_encrypting(ctx))
+ CRYPTO_cbc128_encrypt(in, out, len, &dat->ks,
+ EVP_CIPHER_CTX_iv_noconst(ctx), dat->block);
+ else
+ CRYPTO_cbc128_decrypt(in, out, len, &dat->ks,
+ EVP_CIPHER_CTX_iv_noconst(ctx), dat->block);
+
+ return 1;
+}
+
+static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ size_t bl = EVP_CIPHER_CTX_block_size(ctx);
+ size_t i;
+ EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
+
+ if (len < bl)
+ return 1;
+
+ for (i = 0, len -= bl; i <= len; i += bl)
+ (*dat->block) (in + i, out + i, &dat->ks);
+
+ return 1;
+}
+
+static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
+
+ int num = EVP_CIPHER_CTX_num(ctx);
+ CRYPTO_ofb128_encrypt(in, out, len, &dat->ks,
+ EVP_CIPHER_CTX_iv_noconst(ctx), &num, dat->block);
+ EVP_CIPHER_CTX_set_num(ctx, num);
+ return 1;
+}
+
+static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
+
+ int num = EVP_CIPHER_CTX_num(ctx);
+ CRYPTO_cfb128_encrypt(in, out, len, &dat->ks,
+ EVP_CIPHER_CTX_iv_noconst(ctx), &num,
+ EVP_CIPHER_CTX_encrypting(ctx), dat->block);
+ EVP_CIPHER_CTX_set_num(ctx, num);
+ return 1;
+}
+
+static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
+
+ int num = EVP_CIPHER_CTX_num(ctx);
+ CRYPTO_cfb128_8_encrypt(in, out, len, &dat->ks,
+ EVP_CIPHER_CTX_iv_noconst(ctx), &num,
+ EVP_CIPHER_CTX_encrypting(ctx), dat->block);
+ EVP_CIPHER_CTX_set_num(ctx, num);
+ return 1;
+}
+
+static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
+
+ if (EVP_CIPHER_CTX_test_flags(ctx, EVP_CIPH_FLAG_LENGTH_BITS)) {
+ int num = EVP_CIPHER_CTX_num(ctx);
+ CRYPTO_cfb128_1_encrypt(in, out, len, &dat->ks,
+ EVP_CIPHER_CTX_iv_noconst(ctx), &num,
+ EVP_CIPHER_CTX_encrypting(ctx), dat->block);
+ EVP_CIPHER_CTX_set_num(ctx, num);
+ return 1;
+ }
+
+ while (len >= MAXBITCHUNK) {
+ int num = EVP_CIPHER_CTX_num(ctx);
+ CRYPTO_cfb128_1_encrypt(in, out, MAXBITCHUNK * 8, &dat->ks,
+ EVP_CIPHER_CTX_iv_noconst(ctx), &num,
+ EVP_CIPHER_CTX_encrypting(ctx), dat->block);
+ EVP_CIPHER_CTX_set_num(ctx, num);
+ len -= MAXBITCHUNK;
+ out += MAXBITCHUNK;
+ in += MAXBITCHUNK;
+ }
+ if (len) {
+ int num = EVP_CIPHER_CTX_num(ctx);
+ CRYPTO_cfb128_1_encrypt(in, out, len * 8, &dat->ks,
+ EVP_CIPHER_CTX_iv_noconst(ctx), &num,
+ EVP_CIPHER_CTX_encrypting(ctx), dat->block);
+ EVP_CIPHER_CTX_set_num(ctx, num);
+ }
+
+ return 1;
+}
+
+static int aes_ctr_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ unsigned int num = EVP_CIPHER_CTX_num(ctx);
+ EVP_AES_KEY *dat = EVP_C_DATA(EVP_AES_KEY,ctx);
+
+ if (dat->stream.ctr)
+ CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks,
+ EVP_CIPHER_CTX_iv_noconst(ctx),
+ EVP_CIPHER_CTX_buf_noconst(ctx),
+ &num, dat->stream.ctr);
+ else
+ CRYPTO_ctr128_encrypt(in, out, len, &dat->ks,
+ EVP_CIPHER_CTX_iv_noconst(ctx),
+ EVP_CIPHER_CTX_buf_noconst(ctx), &num,
+ dat->block);
+ EVP_CIPHER_CTX_set_num(ctx, num);
+ return 1;
+}
+
+BLOCK_CIPHER_generic_pack(NID_aes, 128, 0)
+ BLOCK_CIPHER_generic_pack(NID_aes, 192, 0)
+ BLOCK_CIPHER_generic_pack(NID_aes, 256, 0)
+
+static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
+{
+ EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c);
+ if (gctx == NULL)
+ return 0;
+ OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
+ if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(c))
+ OPENSSL_free(gctx->iv);
+ return 1;
+}
+
+/* increment counter (64-bit int) by 1 */
+static void ctr64_inc(unsigned char *counter)
+{
+ int n = 8;
+ unsigned char c;
+
+ do {
+ --n;
+ c = counter[n];
+ ++c;
+ counter[n] = c;
+ if (c)
+ return;
+ } while (n);
+}
+
+static int aes_gcm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
+{
+ EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,c);
+ switch (type) {
+ case EVP_CTRL_INIT:
+ gctx->key_set = 0;
+ gctx->iv_set = 0;
+ gctx->ivlen = EVP_CIPHER_CTX_iv_length(c);
+ gctx->iv = EVP_CIPHER_CTX_iv_noconst(c);
+ gctx->taglen = -1;
+ gctx->iv_gen = 0;
+ gctx->tls_aad_len = -1;
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_IVLEN:
+ if (arg <= 0)
+ return 0;
+ /* Allocate memory for IV if needed */
+ if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen)) {
+ if (gctx->iv != EVP_CIPHER_CTX_iv_noconst(c))
+ OPENSSL_free(gctx->iv);
+ gctx->iv = OPENSSL_malloc(arg);
+ if (gctx->iv == NULL)
+ return 0;
+ }
+ gctx->ivlen = arg;
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_TAG:
+ if (arg <= 0 || arg > 16 || EVP_CIPHER_CTX_encrypting(c))
+ return 0;
+ memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
+ gctx->taglen = arg;
+ return 1;
+
+ case EVP_CTRL_AEAD_GET_TAG:
+ if (arg <= 0 || arg > 16 || !EVP_CIPHER_CTX_encrypting(c)
+ || gctx->taglen < 0)
+ return 0;
+ memcpy(ptr, EVP_CIPHER_CTX_buf_noconst(c), arg);
+ return 1;
+
+ case EVP_CTRL_GCM_SET_IV_FIXED:
+ /* Special case: -1 length restores whole IV */
+ if (arg == -1) {
+ memcpy(gctx->iv, ptr, gctx->ivlen);
+ gctx->iv_gen = 1;
+ return 1;
+ }
+ /*
+ * Fixed field must be at least 4 bytes and invocation field at least
+ * 8.
+ */
+ if ((arg < 4) || (gctx->ivlen - arg) < 8)
+ return 0;
+ if (arg)
+ memcpy(gctx->iv, ptr, arg);
+ if (EVP_CIPHER_CTX_encrypting(c)
+ && RAND_bytes(gctx->iv + arg, gctx->ivlen - arg) <= 0)
+ return 0;
+ gctx->iv_gen = 1;
+ return 1;
+
+ case EVP_CTRL_GCM_IV_GEN:
+ if (gctx->iv_gen == 0 || gctx->key_set == 0)
+ return 0;
+ CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
+ if (arg <= 0 || arg > gctx->ivlen)
+ arg = gctx->ivlen;
+ memcpy(ptr, gctx->iv + gctx->ivlen - arg, arg);
+ /*
+ * Invocation field will be at least 8 bytes in size and so no need
+ * to check wrap around or increment more than last 8 bytes.
+ */
+ ctr64_inc(gctx->iv + gctx->ivlen - 8);
+ gctx->iv_set = 1;
+ return 1;
+
+ case EVP_CTRL_GCM_SET_IV_INV:
+ if (gctx->iv_gen == 0 || gctx->key_set == 0
+ || EVP_CIPHER_CTX_encrypting(c))
+ return 0;
+ memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
+ CRYPTO_gcm128_setiv(&gctx->gcm, gctx->iv, gctx->ivlen);
+ gctx->iv_set = 1;
+ return 1;
+
+ case EVP_CTRL_AEAD_TLS1_AAD:
+ /* Save the AAD for later use */
+ if (arg != EVP_AEAD_TLS1_AAD_LEN)
+ return 0;
+ memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
+ gctx->tls_aad_len = arg;
+ {
+ unsigned int len =
+ EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8
+ | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1];
+ /* Correct length for explicit IV */
+ if (len < EVP_GCM_TLS_EXPLICIT_IV_LEN)
+ return 0;
+ len -= EVP_GCM_TLS_EXPLICIT_IV_LEN;
+ /* If decrypting correct for tag too */
+ if (!EVP_CIPHER_CTX_encrypting(c)) {
+ if (len < EVP_GCM_TLS_TAG_LEN)
+ return 0;
+ len -= EVP_GCM_TLS_TAG_LEN;
+ }
+ EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8;
+ EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff;
+ }
+ /* Extra padding: tag appended to record */
+ return EVP_GCM_TLS_TAG_LEN;
+
+ case EVP_CTRL_COPY:
+ {
+ EVP_CIPHER_CTX *out = ptr;
+ EVP_AES_GCM_CTX *gctx_out = EVP_C_DATA(EVP_AES_GCM_CTX,out);
+ if (gctx->gcm.key) {
+ if (gctx->gcm.key != &gctx->ks)
+ return 0;
+ gctx_out->gcm.key = &gctx_out->ks;
+ }
+ if (gctx->iv == EVP_CIPHER_CTX_iv_noconst(c))
+ gctx_out->iv = EVP_CIPHER_CTX_iv_noconst(out);
+ else {
+ gctx_out->iv = OPENSSL_malloc(gctx->ivlen);
+ if (gctx_out->iv == NULL)
+ return 0;
+ memcpy(gctx_out->iv, gctx->iv, gctx->ivlen);
+ }
+ return 1;
+ }
+
+ default:
+ return -1;
+
+ }
+}
+
+static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx);
+ if (!iv && !key)
+ return 1;
+ if (key) {
+ do {
+#ifdef HWAES_CAPABLE
+ if (HWAES_CAPABLE) {
+ HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &gctx->ks.ks);
+ CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
+ (block128_f) HWAES_encrypt);
+# ifdef HWAES_ctr32_encrypt_blocks
+ gctx->ctr = (ctr128_f) HWAES_ctr32_encrypt_blocks;
+# else
+ gctx->ctr = NULL;
+# endif
+ break;
+ } else
+#endif
+#ifdef BSAES_CAPABLE
+ if (BSAES_CAPABLE) {
+ AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &gctx->ks.ks);
+ CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
+ (block128_f) AES_encrypt);
+ gctx->ctr = (ctr128_f) bsaes_ctr32_encrypt_blocks;
+ break;
+ } else
+#endif
+#ifdef VPAES_CAPABLE
+ if (VPAES_CAPABLE) {
+ vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &gctx->ks.ks);
+ CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
+ (block128_f) vpaes_encrypt);
+ gctx->ctr = NULL;
+ break;
+ } else
+#endif
+ (void)0; /* terminate potentially open 'else' */
+
+ AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &gctx->ks.ks);
+ CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks,
+ (block128_f) AES_encrypt);
+#ifdef AES_CTR_ASM
+ gctx->ctr = (ctr128_f) AES_ctr32_encrypt;
+#else
+ gctx->ctr = NULL;
+#endif
+ } while (0);
+
+ /*
+ * If we have an iv can set it directly, otherwise use saved IV.
+ */
+ if (iv == NULL && gctx->iv_set)
+ iv = gctx->iv;
+ if (iv) {
+ CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
+ gctx->iv_set = 1;
+ }
+ gctx->key_set = 1;
+ } else {
+ /* If key set use IV, otherwise copy */
+ if (gctx->key_set)
+ CRYPTO_gcm128_setiv(&gctx->gcm, iv, gctx->ivlen);
+ else
+ memcpy(gctx->iv, iv, gctx->ivlen);
+ gctx->iv_set = 1;
+ gctx->iv_gen = 0;
+ }
+ return 1;
+}
+
+/*
+ * Handle TLS GCM packet format. This consists of the last portion of the IV
+ * followed by the payload and finally the tag. On encrypt generate IV,
+ * encrypt payload and write the tag. On verify retrieve IV, decrypt payload
+ * and verify tag.
+ */
+
+static int aes_gcm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx);
+ int rv = -1;
+ /* Encrypt/decrypt must be performed in place */
+ if (out != in
+ || len < (EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN))
+ return -1;
+ /*
+ * Set IV from start of buffer or generate IV and write to start of
+ * buffer.
+ */
+ if (EVP_CIPHER_CTX_ctrl(ctx, EVP_CIPHER_CTX_encrypting(ctx) ?
+ EVP_CTRL_GCM_IV_GEN : EVP_CTRL_GCM_SET_IV_INV,
+ EVP_GCM_TLS_EXPLICIT_IV_LEN, out) <= 0)
+ goto err;
+ /* Use saved AAD */
+ if (CRYPTO_gcm128_aad(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx),
+ gctx->tls_aad_len))
+ goto err;
+ /* Fix buffer and length to point to payload */
+ in += EVP_GCM_TLS_EXPLICIT_IV_LEN;
+ out += EVP_GCM_TLS_EXPLICIT_IV_LEN;
+ len -= EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
+ if (EVP_CIPHER_CTX_encrypting(ctx)) {
+ /* Encrypt payload */
+ if (gctx->ctr) {
+ size_t bulk = 0;
+#if defined(AES_GCM_ASM)
+ if (len >= 32 && AES_GCM_ASM(gctx)) {
+ if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0))
+ return -1;
+
+ bulk = AES_gcm_encrypt(in, out, len,
+ gctx->gcm.key,
+ gctx->gcm.Yi.c, gctx->gcm.Xi.u);
+ gctx->gcm.len.u[1] += bulk;
+ }
+#endif
+ if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
+ in + bulk,
+ out + bulk,
+ len - bulk, gctx->ctr))
+ goto err;
+ } else {
+ size_t bulk = 0;
+#if defined(AES_GCM_ASM2)
+ if (len >= 32 && AES_GCM_ASM2(gctx)) {
+ if (CRYPTO_gcm128_encrypt(&gctx->gcm, NULL, NULL, 0))
+ return -1;
+
+ bulk = AES_gcm_encrypt(in, out, len,
+ gctx->gcm.key,
+ gctx->gcm.Yi.c, gctx->gcm.Xi.u);
+ gctx->gcm.len.u[1] += bulk;
+ }
+#endif
+ if (CRYPTO_gcm128_encrypt(&gctx->gcm,
+ in + bulk, out + bulk, len - bulk))
+ goto err;
+ }
+ out += len;
+ /* Finally write tag */
+ CRYPTO_gcm128_tag(&gctx->gcm, out, EVP_GCM_TLS_TAG_LEN);
+ rv = len + EVP_GCM_TLS_EXPLICIT_IV_LEN + EVP_GCM_TLS_TAG_LEN;
+ } else {
+ /* Decrypt */
+ if (gctx->ctr) {
+ size_t bulk = 0;
+#if defined(AES_GCM_ASM)
+ if (len >= 16 && AES_GCM_ASM(gctx)) {
+ if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0))
+ return -1;
+
+ bulk = AES_gcm_decrypt(in, out, len,
+ gctx->gcm.key,
+ gctx->gcm.Yi.c, gctx->gcm.Xi.u);
+ gctx->gcm.len.u[1] += bulk;
+ }
+#endif
+ if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
+ in + bulk,
+ out + bulk,
+ len - bulk, gctx->ctr))
+ goto err;
+ } else {
+ size_t bulk = 0;
+#if defined(AES_GCM_ASM2)
+ if (len >= 16 && AES_GCM_ASM2(gctx)) {
+ if (CRYPTO_gcm128_decrypt(&gctx->gcm, NULL, NULL, 0))
+ return -1;
+
+ bulk = AES_gcm_decrypt(in, out, len,
+ gctx->gcm.key,
+ gctx->gcm.Yi.c, gctx->gcm.Xi.u);
+ gctx->gcm.len.u[1] += bulk;
+ }
+#endif
+ if (CRYPTO_gcm128_decrypt(&gctx->gcm,
+ in + bulk, out + bulk, len - bulk))
+ goto err;
+ }
+ /* Retrieve tag */
+ CRYPTO_gcm128_tag(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx),
+ EVP_GCM_TLS_TAG_LEN);
+ /* If tag mismatch wipe buffer */
+ if (CRYPTO_memcmp(EVP_CIPHER_CTX_buf_noconst(ctx), in + len,
+ EVP_GCM_TLS_TAG_LEN)) {
+ OPENSSL_cleanse(out, len);
+ goto err;
+ }
+ rv = len;
+ }
+
+ err:
+ gctx->iv_set = 0;
+ gctx->tls_aad_len = -1;
+ return rv;
+}
+
+static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ EVP_AES_GCM_CTX *gctx = EVP_C_DATA(EVP_AES_GCM_CTX,ctx);
+ /* If not set up, return error */
+ if (!gctx->key_set)
+ return -1;
+
+ if (gctx->tls_aad_len >= 0)
+ return aes_gcm_tls_cipher(ctx, out, in, len);
+
+ if (!gctx->iv_set)
+ return -1;
+ if (in) {
+ if (out == NULL) {
+ if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
+ return -1;
+ } else if (EVP_CIPHER_CTX_encrypting(ctx)) {
+ if (gctx->ctr) {
+ size_t bulk = 0;
+#if defined(AES_GCM_ASM)
+ if (len >= 32 && AES_GCM_ASM(gctx)) {
+ size_t res = (16 - gctx->gcm.mres) % 16;
+
+ if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res))
+ return -1;
+
+ bulk = AES_gcm_encrypt(in + res,
+ out + res, len - res,
+ gctx->gcm.key, gctx->gcm.Yi.c,
+ gctx->gcm.Xi.u);
+ gctx->gcm.len.u[1] += bulk;
+ bulk += res;
+ }
+#endif
+ if (CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm,
+ in + bulk,
+ out + bulk,
+ len - bulk, gctx->ctr))
+ return -1;
+ } else {
+ size_t bulk = 0;
+#if defined(AES_GCM_ASM2)
+ if (len >= 32 && AES_GCM_ASM2(gctx)) {
+ size_t res = (16 - gctx->gcm.mres) % 16;
+
+ if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, res))
+ return -1;
+
+ bulk = AES_gcm_encrypt(in + res,
+ out + res, len - res,
+ gctx->gcm.key, gctx->gcm.Yi.c,
+ gctx->gcm.Xi.u);
+ gctx->gcm.len.u[1] += bulk;
+ bulk += res;
+ }
+#endif
+ if (CRYPTO_gcm128_encrypt(&gctx->gcm,
+ in + bulk, out + bulk, len - bulk))
+ return -1;
+ }
+ } else {
+ if (gctx->ctr) {
+ size_t bulk = 0;
+#if defined(AES_GCM_ASM)
+ if (len >= 16 && AES_GCM_ASM(gctx)) {
+ size_t res = (16 - gctx->gcm.mres) % 16;
+
+ if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res))
+ return -1;
+
+ bulk = AES_gcm_decrypt(in + res,
+ out + res, len - res,
+ gctx->gcm.key,
+ gctx->gcm.Yi.c, gctx->gcm.Xi.u);
+ gctx->gcm.len.u[1] += bulk;
+ bulk += res;
+ }
+#endif
+ if (CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm,
+ in + bulk,
+ out + bulk,
+ len - bulk, gctx->ctr))
+ return -1;
+ } else {
+ size_t bulk = 0;
+#if defined(AES_GCM_ASM2)
+ if (len >= 16 && AES_GCM_ASM2(gctx)) {
+ size_t res = (16 - gctx->gcm.mres) % 16;
+
+ if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, res))
+ return -1;
+
+ bulk = AES_gcm_decrypt(in + res,
+ out + res, len - res,
+ gctx->gcm.key,
+ gctx->gcm.Yi.c, gctx->gcm.Xi.u);
+ gctx->gcm.len.u[1] += bulk;
+ bulk += res;
+ }
+#endif
+ if (CRYPTO_gcm128_decrypt(&gctx->gcm,
+ in + bulk, out + bulk, len - bulk))
+ return -1;
+ }
+ }
+ return len;
+ } else {
+ if (!EVP_CIPHER_CTX_encrypting(ctx)) {
+ if (gctx->taglen < 0)
+ return -1;
+ if (CRYPTO_gcm128_finish(&gctx->gcm,
+ EVP_CIPHER_CTX_buf_noconst(ctx),
+ gctx->taglen) != 0)
+ return -1;
+ gctx->iv_set = 0;
+ return 0;
+ }
+ CRYPTO_gcm128_tag(&gctx->gcm, EVP_CIPHER_CTX_buf_noconst(ctx), 16);
+ gctx->taglen = 16;
+ /* Don't reuse the IV */
+ gctx->iv_set = 0;
+ return 0;
+ }
+
+}
+
+#define CUSTOM_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 \
+ | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
+ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
+ | EVP_CIPH_CUSTOM_COPY)
+
+BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, gcm, GCM,
+ EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
+ BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, gcm, GCM,
+ EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
+ BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, gcm, GCM,
+ EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
+
+static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
+{
+ EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,c);
+ if (type == EVP_CTRL_COPY) {
+ EVP_CIPHER_CTX *out = ptr;
+ EVP_AES_XTS_CTX *xctx_out = EVP_C_DATA(EVP_AES_XTS_CTX,out);
+ if (xctx->xts.key1) {
+ if (xctx->xts.key1 != &xctx->ks1)
+ return 0;
+ xctx_out->xts.key1 = &xctx_out->ks1;
+ }
+ if (xctx->xts.key2) {
+ if (xctx->xts.key2 != &xctx->ks2)
+ return 0;
+ xctx_out->xts.key2 = &xctx_out->ks2;
+ }
+ return 1;
+ } else if (type != EVP_CTRL_INIT)
+ return -1;
+ /* key1 and key2 are used as an indicator both key and IV are set */
+ xctx->xts.key1 = NULL;
+ xctx->xts.key2 = NULL;
+ return 1;
+}
+
+static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx);
+ if (!iv && !key)
+ return 1;
+
+ if (key)
+ do {
+#ifdef AES_XTS_ASM
+ xctx->stream = enc ? AES_xts_encrypt : AES_xts_decrypt;
+#else
+ xctx->stream = NULL;
+#endif
+ /* key_len is two AES keys */
+#ifdef HWAES_CAPABLE
+ if (HWAES_CAPABLE) {
+ if (enc) {
+ HWAES_set_encrypt_key(key,
+ EVP_CIPHER_CTX_key_length(ctx) * 4,
+ &xctx->ks1.ks);
+ xctx->xts.block1 = (block128_f) HWAES_encrypt;
+# ifdef HWAES_xts_encrypt
+ xctx->stream = HWAES_xts_encrypt;
+# endif
+ } else {
+ HWAES_set_decrypt_key(key,
+ EVP_CIPHER_CTX_key_length(ctx) * 4,
+ &xctx->ks1.ks);
+ xctx->xts.block1 = (block128_f) HWAES_decrypt;
+# ifdef HWAES_xts_decrypt
+ xctx->stream = HWAES_xts_decrypt;
+#endif
+ }
+
+ HWAES_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2,
+ EVP_CIPHER_CTX_key_length(ctx) * 4,
+ &xctx->ks2.ks);
+ xctx->xts.block2 = (block128_f) HWAES_encrypt;
+
+ xctx->xts.key1 = &xctx->ks1;
+ break;
+ } else
+#endif
+#ifdef BSAES_CAPABLE
+ if (BSAES_CAPABLE)
+ xctx->stream = enc ? bsaes_xts_encrypt : bsaes_xts_decrypt;
+ else
+#endif
+#ifdef VPAES_CAPABLE
+ if (VPAES_CAPABLE) {
+ if (enc) {
+ vpaes_set_encrypt_key(key,
+ EVP_CIPHER_CTX_key_length(ctx) * 4,
+ &xctx->ks1.ks);
+ xctx->xts.block1 = (block128_f) vpaes_encrypt;
+ } else {
+ vpaes_set_decrypt_key(key,
+ EVP_CIPHER_CTX_key_length(ctx) * 4,
+ &xctx->ks1.ks);
+ xctx->xts.block1 = (block128_f) vpaes_decrypt;
+ }
+
+ vpaes_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2,
+ EVP_CIPHER_CTX_key_length(ctx) * 4,
+ &xctx->ks2.ks);
+ xctx->xts.block2 = (block128_f) vpaes_encrypt;
+
+ xctx->xts.key1 = &xctx->ks1;
+ break;
+ } else
+#endif
+ (void)0; /* terminate potentially open 'else' */
+
+ if (enc) {
+ AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4,
+ &xctx->ks1.ks);
+ xctx->xts.block1 = (block128_f) AES_encrypt;
+ } else {
+ AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 4,
+ &xctx->ks1.ks);
+ xctx->xts.block1 = (block128_f) AES_decrypt;
+ }
+
+ AES_set_encrypt_key(key + EVP_CIPHER_CTX_key_length(ctx) / 2,
+ EVP_CIPHER_CTX_key_length(ctx) * 4,
+ &xctx->ks2.ks);
+ xctx->xts.block2 = (block128_f) AES_encrypt;
+
+ xctx->xts.key1 = &xctx->ks1;
+ } while (0);
+
+ if (iv) {
+ xctx->xts.key2 = &xctx->ks2;
+ memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 16);
+ }
+
+ return 1;
+}
+
+static int aes_xts_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ EVP_AES_XTS_CTX *xctx = EVP_C_DATA(EVP_AES_XTS_CTX,ctx);
+ if (!xctx->xts.key1 || !xctx->xts.key2)
+ return 0;
+ if (!out || !in || len < AES_BLOCK_SIZE)
+ return 0;
+ if (xctx->stream)
+ (*xctx->stream) (in, out, len,
+ xctx->xts.key1, xctx->xts.key2,
+ EVP_CIPHER_CTX_iv_noconst(ctx));
+ else if (CRYPTO_xts128_encrypt(&xctx->xts, EVP_CIPHER_CTX_iv_noconst(ctx),
+ in, out, len,
+ EVP_CIPHER_CTX_encrypting(ctx)))
+ return 0;
+ return 1;
+}
+
+#define aes_xts_cleanup NULL
+
+#define XTS_FLAGS (EVP_CIPH_FLAG_DEFAULT_ASN1 | EVP_CIPH_CUSTOM_IV \
+ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT \
+ | EVP_CIPH_CUSTOM_COPY)
+
+BLOCK_CIPHER_custom(NID_aes, 128, 1, 16, xts, XTS, XTS_FLAGS)
+ BLOCK_CIPHER_custom(NID_aes, 256, 1, 16, xts, XTS, XTS_FLAGS)
+
+static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
+{
+ EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,c);
+ switch (type) {
+ case EVP_CTRL_INIT:
+ cctx->key_set = 0;
+ cctx->iv_set = 0;
+ cctx->L = 8;
+ cctx->M = 12;
+ cctx->tag_set = 0;
+ cctx->len_set = 0;
+ cctx->tls_aad_len = -1;
+ return 1;
+
+ case EVP_CTRL_AEAD_TLS1_AAD:
+ /* Save the AAD for later use */
+ if (arg != EVP_AEAD_TLS1_AAD_LEN)
+ return 0;
+ memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
+ cctx->tls_aad_len = arg;
+ {
+ uint16_t len =
+ EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] << 8
+ | EVP_CIPHER_CTX_buf_noconst(c)[arg - 1];
+ /* Correct length for explicit IV */
+ if (len < EVP_CCM_TLS_EXPLICIT_IV_LEN)
+ return 0;
+ len -= EVP_CCM_TLS_EXPLICIT_IV_LEN;
+ /* If decrypting correct for tag too */
+ if (!EVP_CIPHER_CTX_encrypting(c)) {
+ if (len < cctx->M)
+ return 0;
+ len -= cctx->M;
+ }
+ EVP_CIPHER_CTX_buf_noconst(c)[arg - 2] = len >> 8;
+ EVP_CIPHER_CTX_buf_noconst(c)[arg - 1] = len & 0xff;
+ }
+ /* Extra padding: tag appended to record */
+ return cctx->M;
+
+ case EVP_CTRL_CCM_SET_IV_FIXED:
+ /* Sanity check length */
+ if (arg != EVP_CCM_TLS_FIXED_IV_LEN)
+ return 0;
+ /* Just copy to first part of IV */
+ memcpy(EVP_CIPHER_CTX_iv_noconst(c), ptr, arg);
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_IVLEN:
+ arg = 15 - arg;
+ /* fall thru */
+ case EVP_CTRL_CCM_SET_L:
+ if (arg < 2 || arg > 8)
+ return 0;
+ cctx->L = arg;
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_TAG:
+ if ((arg & 1) || arg < 4 || arg > 16)
+ return 0;
+ if (EVP_CIPHER_CTX_encrypting(c) && ptr)
+ return 0;
+ if (ptr) {
+ cctx->tag_set = 1;
+ memcpy(EVP_CIPHER_CTX_buf_noconst(c), ptr, arg);
+ }
+ cctx->M = arg;
+ return 1;
+
+ case EVP_CTRL_AEAD_GET_TAG:
+ if (!EVP_CIPHER_CTX_encrypting(c) || !cctx->tag_set)
+ return 0;
+ if (!CRYPTO_ccm128_tag(&cctx->ccm, ptr, (size_t)arg))
+ return 0;
+ cctx->tag_set = 0;
+ cctx->iv_set = 0;
+ cctx->len_set = 0;
+ return 1;
+
+ case EVP_CTRL_COPY:
+ {
+ EVP_CIPHER_CTX *out = ptr;
+ EVP_AES_CCM_CTX *cctx_out = EVP_C_DATA(EVP_AES_CCM_CTX,out);
+ if (cctx->ccm.key) {
+ if (cctx->ccm.key != &cctx->ks)
+ return 0;
+ cctx_out->ccm.key = &cctx_out->ks;
+ }
+ return 1;
+ }
+
+ default:
+ return -1;
+
+ }
+}
+
+static int aes_ccm_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx);
+ if (!iv && !key)
+ return 1;
+ if (key)
+ do {
+#ifdef HWAES_CAPABLE
+ if (HWAES_CAPABLE) {
+ HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &cctx->ks.ks);
+
+ CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
+ &cctx->ks, (block128_f) HWAES_encrypt);
+ cctx->str = NULL;
+ cctx->key_set = 1;
+ break;
+ } else
+#endif
+#ifdef VPAES_CAPABLE
+ if (VPAES_CAPABLE) {
+ vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &cctx->ks.ks);
+ CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
+ &cctx->ks, (block128_f) vpaes_encrypt);
+ cctx->str = NULL;
+ cctx->key_set = 1;
+ break;
+ }
+#endif
+ AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &cctx->ks.ks);
+ CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
+ &cctx->ks, (block128_f) AES_encrypt);
+ cctx->str = NULL;
+ cctx->key_set = 1;
+ } while (0);
+ if (iv) {
+ memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, 15 - cctx->L);
+ cctx->iv_set = 1;
+ }
+ return 1;
+}
+
+static int aes_ccm_tls_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx);
+ CCM128_CONTEXT *ccm = &cctx->ccm;
+ /* Encrypt/decrypt must be performed in place */
+ if (out != in || len < (EVP_CCM_TLS_EXPLICIT_IV_LEN + (size_t)cctx->M))
+ return -1;
+ /* If encrypting set explicit IV from sequence number (start of AAD) */
+ if (EVP_CIPHER_CTX_encrypting(ctx))
+ memcpy(out, EVP_CIPHER_CTX_buf_noconst(ctx),
+ EVP_CCM_TLS_EXPLICIT_IV_LEN);
+ /* Get rest of IV from explicit IV */
+ memcpy(EVP_CIPHER_CTX_iv_noconst(ctx) + EVP_CCM_TLS_FIXED_IV_LEN, in,
+ EVP_CCM_TLS_EXPLICIT_IV_LEN);
+ /* Correct length value */
+ len -= EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M;
+ if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx), 15 - cctx->L,
+ len))
+ return -1;
+ /* Use saved AAD */
+ CRYPTO_ccm128_aad(ccm, EVP_CIPHER_CTX_buf_noconst(ctx), cctx->tls_aad_len);
+ /* Fix buffer to point to payload */
+ in += EVP_CCM_TLS_EXPLICIT_IV_LEN;
+ out += EVP_CCM_TLS_EXPLICIT_IV_LEN;
+ if (EVP_CIPHER_CTX_encrypting(ctx)) {
+ if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
+ cctx->str) :
+ CRYPTO_ccm128_encrypt(ccm, in, out, len))
+ return -1;
+ if (!CRYPTO_ccm128_tag(ccm, out + len, cctx->M))
+ return -1;
+ return len + EVP_CCM_TLS_EXPLICIT_IV_LEN + cctx->M;
+ } else {
+ if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
+ cctx->str) :
+ !CRYPTO_ccm128_decrypt(ccm, in, out, len)) {
+ unsigned char tag[16];
+ if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) {
+ if (!CRYPTO_memcmp(tag, in + len, cctx->M))
+ return len;
+ }
+ }
+ OPENSSL_cleanse(out, len);
+ return -1;
+ }
+}
+
+static int aes_ccm_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ EVP_AES_CCM_CTX *cctx = EVP_C_DATA(EVP_AES_CCM_CTX,ctx);
+ CCM128_CONTEXT *ccm = &cctx->ccm;
+ /* If not set up, return error */
+ if (!cctx->key_set)
+ return -1;
+
+ if (cctx->tls_aad_len >= 0)
+ return aes_ccm_tls_cipher(ctx, out, in, len);
+
+ /* EVP_*Final() doesn't return any data */
+ if (in == NULL && out != NULL)
+ return 0;
+
+ if (!cctx->iv_set)
+ return -1;
+
+ if (!EVP_CIPHER_CTX_encrypting(ctx) && !cctx->tag_set)
+ return -1;
+ if (!out) {
+ if (!in) {
+ if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx),
+ 15 - cctx->L, len))
+ return -1;
+ cctx->len_set = 1;
+ return len;
+ }
+ /* If have AAD need message length */
+ if (!cctx->len_set && len)
+ return -1;
+ CRYPTO_ccm128_aad(ccm, in, len);
+ return len;
+ }
+ /* If not set length yet do it */
+ if (!cctx->len_set) {
+ if (CRYPTO_ccm128_setiv(ccm, EVP_CIPHER_CTX_iv_noconst(ctx),
+ 15 - cctx->L, len))
+ return -1;
+ cctx->len_set = 1;
+ }
+ if (EVP_CIPHER_CTX_encrypting(ctx)) {
+ if (cctx->str ? CRYPTO_ccm128_encrypt_ccm64(ccm, in, out, len,
+ cctx->str) :
+ CRYPTO_ccm128_encrypt(ccm, in, out, len))
+ return -1;
+ cctx->tag_set = 1;
+ return len;
+ } else {
+ int rv = -1;
+ if (cctx->str ? !CRYPTO_ccm128_decrypt_ccm64(ccm, in, out, len,
+ cctx->str) :
+ !CRYPTO_ccm128_decrypt(ccm, in, out, len)) {
+ unsigned char tag[16];
+ if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) {
+ if (!CRYPTO_memcmp(tag, EVP_CIPHER_CTX_buf_noconst(ctx),
+ cctx->M))
+ rv = len;
+ }
+ }
+ if (rv == -1)
+ OPENSSL_cleanse(out, len);
+ cctx->iv_set = 0;
+ cctx->tag_set = 0;
+ cctx->len_set = 0;
+ return rv;
+ }
+}
+
+#define aes_ccm_cleanup NULL
+
+BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, ccm, CCM,
+ EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
+ BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, ccm, CCM,
+ EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
+ BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, ccm, CCM,
+ EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
+
+typedef struct {
+ union {
+ double align;
+ AES_KEY ks;
+ } ks;
+ /* Indicates if IV has been set */
+ unsigned char *iv;
+} EVP_AES_WRAP_CTX;
+
+static int aes_wrap_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx);
+ if (!iv && !key)
+ return 1;
+ if (key) {
+ if (EVP_CIPHER_CTX_encrypting(ctx))
+ AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &wctx->ks.ks);
+ else
+ AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &wctx->ks.ks);
+ if (!iv)
+ wctx->iv = NULL;
+ }
+ if (iv) {
+ memcpy(EVP_CIPHER_CTX_iv_noconst(ctx), iv, EVP_CIPHER_CTX_iv_length(ctx));
+ wctx->iv = EVP_CIPHER_CTX_iv_noconst(ctx);
+ }
+ return 1;
+}
+
+static int aes_wrap_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t inlen)
+{
+ EVP_AES_WRAP_CTX *wctx = EVP_C_DATA(EVP_AES_WRAP_CTX,ctx);
+ size_t rv;
+ /* AES wrap with padding has IV length of 4, without padding 8 */
+ int pad = EVP_CIPHER_CTX_iv_length(ctx) == 4;
+ /* No final operation so always return zero length */
+ if (!in)
+ return 0;
+ /* Input length must always be non-zero */
+ if (!inlen)
+ return -1;
+ /* If decrypting need at least 16 bytes and multiple of 8 */
+ if (!EVP_CIPHER_CTX_encrypting(ctx) && (inlen < 16 || inlen & 0x7))
+ return -1;
+ /* If not padding input must be multiple of 8 */
+ if (!pad && inlen & 0x7)
+ return -1;
+ if (is_partially_overlapping(out, in, inlen)) {
+ EVPerr(EVP_F_AES_WRAP_CIPHER, EVP_R_PARTIALLY_OVERLAPPING);
+ return 0;
+ }
+ if (!out) {
+ if (EVP_CIPHER_CTX_encrypting(ctx)) {
+ /* If padding round up to multiple of 8 */
+ if (pad)
+ inlen = (inlen + 7) / 8 * 8;
+ /* 8 byte prefix */
+ return inlen + 8;
+ } else {
+ /*
+ * If not padding output will be exactly 8 bytes smaller than
+ * input. If padding it will be at least 8 bytes smaller but we
+ * don't know how much.
+ */
+ return inlen - 8;
+ }
+ }
+ if (pad) {
+ if (EVP_CIPHER_CTX_encrypting(ctx))
+ rv = CRYPTO_128_wrap_pad(&wctx->ks.ks, wctx->iv,
+ out, in, inlen,
+ (block128_f) AES_encrypt);
+ else
+ rv = CRYPTO_128_unwrap_pad(&wctx->ks.ks, wctx->iv,
+ out, in, inlen,
+ (block128_f) AES_decrypt);
+ } else {
+ if (EVP_CIPHER_CTX_encrypting(ctx))
+ rv = CRYPTO_128_wrap(&wctx->ks.ks, wctx->iv,
+ out, in, inlen, (block128_f) AES_encrypt);
+ else
+ rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv,
+ out, in, inlen, (block128_f) AES_decrypt);
+ }
+ return rv ? (int)rv : -1;
+}
+
+#define WRAP_FLAGS (EVP_CIPH_WRAP_MODE \
+ | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER \
+ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_FLAG_DEFAULT_ASN1)
+
+static const EVP_CIPHER aes_128_wrap = {
+ NID_id_aes128_wrap,
+ 8, 16, 8, WRAP_FLAGS,
+ aes_wrap_init_key, aes_wrap_cipher,
+ NULL,
+ sizeof(EVP_AES_WRAP_CTX),
+ NULL, NULL, NULL, NULL
+};
+
+const EVP_CIPHER *EVP_aes_128_wrap(void)
+{
+ return &aes_128_wrap;
+}
+
+static const EVP_CIPHER aes_192_wrap = {
+ NID_id_aes192_wrap,
+ 8, 24, 8, WRAP_FLAGS,
+ aes_wrap_init_key, aes_wrap_cipher,
+ NULL,
+ sizeof(EVP_AES_WRAP_CTX),
+ NULL, NULL, NULL, NULL
+};
+
+const EVP_CIPHER *EVP_aes_192_wrap(void)
+{
+ return &aes_192_wrap;
+}
+
+static const EVP_CIPHER aes_256_wrap = {
+ NID_id_aes256_wrap,
+ 8, 32, 8, WRAP_FLAGS,
+ aes_wrap_init_key, aes_wrap_cipher,
+ NULL,
+ sizeof(EVP_AES_WRAP_CTX),
+ NULL, NULL, NULL, NULL
+};
+
+const EVP_CIPHER *EVP_aes_256_wrap(void)
+{
+ return &aes_256_wrap;
+}
+
+static const EVP_CIPHER aes_128_wrap_pad = {
+ NID_id_aes128_wrap_pad,
+ 8, 16, 4, WRAP_FLAGS,
+ aes_wrap_init_key, aes_wrap_cipher,
+ NULL,
+ sizeof(EVP_AES_WRAP_CTX),
+ NULL, NULL, NULL, NULL
+};
+
+const EVP_CIPHER *EVP_aes_128_wrap_pad(void)
+{
+ return &aes_128_wrap_pad;
+}
+
+static const EVP_CIPHER aes_192_wrap_pad = {
+ NID_id_aes192_wrap_pad,
+ 8, 24, 4, WRAP_FLAGS,
+ aes_wrap_init_key, aes_wrap_cipher,
+ NULL,
+ sizeof(EVP_AES_WRAP_CTX),
+ NULL, NULL, NULL, NULL
+};
+
+const EVP_CIPHER *EVP_aes_192_wrap_pad(void)
+{
+ return &aes_192_wrap_pad;
+}
+
+static const EVP_CIPHER aes_256_wrap_pad = {
+ NID_id_aes256_wrap_pad,
+ 8, 32, 4, WRAP_FLAGS,
+ aes_wrap_init_key, aes_wrap_cipher,
+ NULL,
+ sizeof(EVP_AES_WRAP_CTX),
+ NULL, NULL, NULL, NULL
+};
+
+const EVP_CIPHER *EVP_aes_256_wrap_pad(void)
+{
+ return &aes_256_wrap_pad;
+}
+
+#ifndef OPENSSL_NO_OCB
+static int aes_ocb_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
+{
+ EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c);
+ EVP_CIPHER_CTX *newc;
+ EVP_AES_OCB_CTX *new_octx;
+
+ switch (type) {
+ case EVP_CTRL_INIT:
+ octx->key_set = 0;
+ octx->iv_set = 0;
+ octx->ivlen = EVP_CIPHER_CTX_iv_length(c);
+ octx->iv = EVP_CIPHER_CTX_iv_noconst(c);
+ octx->taglen = 16;
+ octx->data_buf_len = 0;
+ octx->aad_buf_len = 0;
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_IVLEN:
+ /* IV len must be 1 to 15 */
+ if (arg <= 0 || arg > 15)
+ return 0;
+
+ octx->ivlen = arg;
+ return 1;
+
+ case EVP_CTRL_AEAD_SET_TAG:
+ if (!ptr) {
+ /* Tag len must be 0 to 16 */
+ if (arg < 0 || arg > 16)
+ return 0;
+
+ octx->taglen = arg;
+ return 1;
+ }
+ if (arg != octx->taglen || EVP_CIPHER_CTX_encrypting(c))
+ return 0;
+ memcpy(octx->tag, ptr, arg);
+ return 1;
+
+ case EVP_CTRL_AEAD_GET_TAG:
+ if (arg != octx->taglen || !EVP_CIPHER_CTX_encrypting(c))
+ return 0;
+
+ memcpy(ptr, octx->tag, arg);
+ return 1;
+
+ case EVP_CTRL_COPY:
+ newc = (EVP_CIPHER_CTX *)ptr;
+ new_octx = EVP_C_DATA(EVP_AES_OCB_CTX,newc);
+ return CRYPTO_ocb128_copy_ctx(&new_octx->ocb, &octx->ocb,
+ &new_octx->ksenc.ks,
+ &new_octx->ksdec.ks);
+
+ default:
+ return -1;
+
+ }
+}
+
+# ifdef HWAES_CAPABLE
+# ifdef HWAES_ocb_encrypt
+void HWAES_ocb_encrypt(const unsigned char *in, unsigned char *out,
+ size_t blocks, const void *key,
+ size_t start_block_num,
+ unsigned char offset_i[16],
+ const unsigned char L_[][16],
+ unsigned char checksum[16]);
+# else
+# define HWAES_ocb_encrypt ((ocb128_f)NULL)
+# endif
+# ifdef HWAES_ocb_decrypt
+void HWAES_ocb_decrypt(const unsigned char *in, unsigned char *out,
+ size_t blocks, const void *key,
+ size_t start_block_num,
+ unsigned char offset_i[16],
+ const unsigned char L_[][16],
+ unsigned char checksum[16]);
+# else
+# define HWAES_ocb_decrypt ((ocb128_f)NULL)
+# endif
+# endif
+
+static int aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+{
+ EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx);
+ if (!iv && !key)
+ return 1;
+ if (key) {
+ do {
+ /*
+ * We set both the encrypt and decrypt key here because decrypt
+ * needs both. We could possibly optimise to remove setting the
+ * decrypt for an encryption operation.
+ */
+# ifdef HWAES_CAPABLE
+ if (HWAES_CAPABLE) {
+ HWAES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &octx->ksenc.ks);
+ HWAES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &octx->ksdec.ks);
+ if (!CRYPTO_ocb128_init(&octx->ocb,
+ &octx->ksenc.ks, &octx->ksdec.ks,
+ (block128_f) HWAES_encrypt,
+ (block128_f) HWAES_decrypt,
+ enc ? HWAES_ocb_encrypt
+ : HWAES_ocb_decrypt))
+ return 0;
+ break;
+ }
+# endif
+# ifdef VPAES_CAPABLE
+ if (VPAES_CAPABLE) {
+ vpaes_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &octx->ksenc.ks);
+ vpaes_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &octx->ksdec.ks);
+ if (!CRYPTO_ocb128_init(&octx->ocb,
+ &octx->ksenc.ks, &octx->ksdec.ks,
+ (block128_f) vpaes_encrypt,
+ (block128_f) vpaes_decrypt,
+ NULL))
+ return 0;
+ break;
+ }
+# endif
+ AES_set_encrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &octx->ksenc.ks);
+ AES_set_decrypt_key(key, EVP_CIPHER_CTX_key_length(ctx) * 8,
+ &octx->ksdec.ks);
+ if (!CRYPTO_ocb128_init(&octx->ocb,
+ &octx->ksenc.ks, &octx->ksdec.ks,
+ (block128_f) AES_encrypt,
+ (block128_f) AES_decrypt,
+ NULL))
+ return 0;
+ }
+ while (0);
+
+ /*
+ * If we have an iv we can set it directly, otherwise use saved IV.
+ */
+ if (iv == NULL && octx->iv_set)
+ iv = octx->iv;
+ if (iv) {
+ if (CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen)
+ != 1)
+ return 0;
+ octx->iv_set = 1;
+ }
+ octx->key_set = 1;
+ } else {
+ /* If key set use IV, otherwise copy */
+ if (octx->key_set)
+ CRYPTO_ocb128_setiv(&octx->ocb, iv, octx->ivlen, octx->taglen);
+ else
+ memcpy(octx->iv, iv, octx->ivlen);
+ octx->iv_set = 1;
+ }
+ return 1;
+}
+
+static int aes_ocb_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ unsigned char *buf;
+ int *buf_len;
+ int written_len = 0;
+ size_t trailing_len;
+ EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,ctx);
+
+ /* If IV or Key not set then return error */
+ if (!octx->iv_set)
+ return -1;
+
+ if (!octx->key_set)
+ return -1;
+
+ if (in != NULL) {
+ /*
+ * Need to ensure we are only passing full blocks to low level OCB
+ * routines. We do it here rather than in EVP_EncryptUpdate/
+ * EVP_DecryptUpdate because we need to pass full blocks of AAD too
+ * and those routines don't support that
+ */
+
+ /* Are we dealing with AAD or normal data here? */
+ if (out == NULL) {
+ buf = octx->aad_buf;
+ buf_len = &(octx->aad_buf_len);
+ } else {
+ buf = octx->data_buf;
+ buf_len = &(octx->data_buf_len);
+
+ if (is_partially_overlapping(out + *buf_len, in, len)) {
+ EVPerr(EVP_F_AES_OCB_CIPHER, EVP_R_PARTIALLY_OVERLAPPING);
+ return 0;
+ }
+ }
+
+ /*
+ * If we've got a partially filled buffer from a previous call then
+ * use that data first
+ */
+ if (*buf_len > 0) {
+ unsigned int remaining;
+
+ remaining = AES_BLOCK_SIZE - (*buf_len);
+ if (remaining > len) {
+ memcpy(buf + (*buf_len), in, len);
+ *(buf_len) += len;
+ return 0;
+ }
+ memcpy(buf + (*buf_len), in, remaining);
+
+ /*
+ * If we get here we've filled the buffer, so process it
+ */
+ len -= remaining;
+ in += remaining;
+ if (out == NULL) {
+ if (!CRYPTO_ocb128_aad(&octx->ocb, buf, AES_BLOCK_SIZE))
+ return -1;
+ } else if (EVP_CIPHER_CTX_encrypting(ctx)) {
+ if (!CRYPTO_ocb128_encrypt(&octx->ocb, buf, out,
+ AES_BLOCK_SIZE))
+ return -1;
+ } else {
+ if (!CRYPTO_ocb128_decrypt(&octx->ocb, buf, out,
+ AES_BLOCK_SIZE))
+ return -1;
+ }
+ written_len = AES_BLOCK_SIZE;
+ *buf_len = 0;
+ if (out != NULL)
+ out += AES_BLOCK_SIZE;
+ }
+
+ /* Do we have a partial block to handle at the end? */
+ trailing_len = len % AES_BLOCK_SIZE;
+
+ /*
+ * If we've got some full blocks to handle, then process these first
+ */
+ if (len != trailing_len) {
+ if (out == NULL) {
+ if (!CRYPTO_ocb128_aad(&octx->ocb, in, len - trailing_len))
+ return -1;
+ } else if (EVP_CIPHER_CTX_encrypting(ctx)) {
+ if (!CRYPTO_ocb128_encrypt
+ (&octx->ocb, in, out, len - trailing_len))
+ return -1;
+ } else {
+ if (!CRYPTO_ocb128_decrypt
+ (&octx->ocb, in, out, len - trailing_len))
+ return -1;
+ }
+ written_len += len - trailing_len;
+ in += len - trailing_len;
+ }
+
+ /* Handle any trailing partial block */
+ if (trailing_len > 0) {
+ memcpy(buf, in, trailing_len);
+ *buf_len = trailing_len;
+ }
+
+ return written_len;
+ } else {
+ /*
+ * First of all empty the buffer of any partial block that we might
+ * have been provided - both for data and AAD
+ */
+ if (octx->data_buf_len > 0) {
+ if (EVP_CIPHER_CTX_encrypting(ctx)) {
+ if (!CRYPTO_ocb128_encrypt(&octx->ocb, octx->data_buf, out,
+ octx->data_buf_len))
+ return -1;
+ } else {
+ if (!CRYPTO_ocb128_decrypt(&octx->ocb, octx->data_buf, out,
+ octx->data_buf_len))
+ return -1;
+ }
+ written_len = octx->data_buf_len;
+ octx->data_buf_len = 0;
+ }
+ if (octx->aad_buf_len > 0) {
+ if (!CRYPTO_ocb128_aad
+ (&octx->ocb, octx->aad_buf, octx->aad_buf_len))
+ return -1;
+ octx->aad_buf_len = 0;
+ }
+ /* If decrypting then verify */
+ if (!EVP_CIPHER_CTX_encrypting(ctx)) {
+ if (octx->taglen < 0)
+ return -1;
+ if (CRYPTO_ocb128_finish(&octx->ocb,
+ octx->tag, octx->taglen) != 0)
+ return -1;
+ octx->iv_set = 0;
+ return written_len;
+ }
+ /* If encrypting then just get the tag */
+ if (CRYPTO_ocb128_tag(&octx->ocb, octx->tag, 16) != 1)
+ return -1;
+ /* Don't reuse the IV */
+ octx->iv_set = 0;
+ return written_len;
+ }
+}
+
+static int aes_ocb_cleanup(EVP_CIPHER_CTX *c)
+{
+ EVP_AES_OCB_CTX *octx = EVP_C_DATA(EVP_AES_OCB_CTX,c);
+ CRYPTO_ocb128_cleanup(&octx->ocb);
+ return 1;
+}
+
+BLOCK_CIPHER_custom(NID_aes, 128, 16, 12, ocb, OCB,
+ EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
+BLOCK_CIPHER_custom(NID_aes, 192, 16, 12, ocb, OCB,
+ EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
+BLOCK_CIPHER_custom(NID_aes, 256, 16, 12, ocb, OCB,
+ EVP_CIPH_FLAG_AEAD_CIPHER | CUSTOM_FLAGS)
+#endif /* OPENSSL_NO_OCB */