#include <openssl/opensslconf.h>
#ifndef OPENSSL_NO_AES
+#include <openssl/crypto.h>
# include <openssl/evp.h>
# include <openssl/err.h>
# include <string.h>
int tag_set; /* Set if tag is valid */
int len_set; /* Set if message length set */
int L, M; /* L and M parameters from RFC3610 */
+ int tls_aad_len; /* TLS AAD length */
CCM128_CONTEXT ccm;
ccm128_f str;
} EVP_AES_CCM_CTX;
# ifndef OPENSSL_NO_OCB
typedef struct {
- AES_KEY ksenc; /* AES key schedule to use for encryption */
- AES_KEY ksdec; /* AES key schedule to use for decryption */
+ union {
+ double align;
+ AES_KEY ks;
+ } ksenc; /* AES key schedule to use for encryption */
+ union {
+ double align;
+ AES_KEY ks;
+ } ksdec; /* AES key schedule to use for decryption */
int key_set; /* Set if key initialised */
int iv_set; /* Set if an iv is set */
OCB128_CONTEXT ocb;
const unsigned char *in, size_t len);
# ifndef OPENSSL_NO_OCB
+void aesni_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]);
+void aesni_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]);
+
static int aesni_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
* needs both. We could possibly optimise to remove setting the
* decrypt for an encryption operation.
*/
- aesni_set_encrypt_key(key, ctx->key_len * 8, &octx->ksenc);
- aesni_set_decrypt_key(key, ctx->key_len * 8, &octx->ksdec);
- if (!CRYPTO_ocb128_init(&octx->ocb, &octx->ksenc, &octx->ksdec,
+ aesni_set_encrypt_key(key, ctx->key_len * 8, &octx->ksenc.ks);
+ aesni_set_decrypt_key(key, ctx->key_len * 8, &octx->ksdec.ks);
+ if (!CRYPTO_ocb128_init(&octx->ocb,
+ &octx->ksenc.ks, &octx->ksdec.ks,
(block128_f) aesni_encrypt,
- (block128_f) aesni_decrypt))
+ (block128_f) aesni_decrypt,
+ enc ? aesni_ocb_encrypt
+ : aesni_ocb_decrypt))
return 0;
}
while (0);
aes_t4_set_encrypt_key(key, bits, &cctx->ks.ks);
CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
&cctx->ks, (block128_f) aes_t4_encrypt);
+ cctx->str = NULL;
cctx->key_set = 1;
}
if (iv) {
* needs both. We could possibly optimise to remove setting the
* decrypt for an encryption operation.
*/
- aes_t4_set_encrypt_key(key, ctx->key_len * 8, &octx->ksenc);
- aes_t4_set_decrypt_key(key, ctx->key_len * 8, &octx->ksdec);
- if (!CRYPTO_ocb128_init(&octx->ocb, &octx->ksenc, &octx->ksdec,
+ aes_t4_set_encrypt_key(key, ctx->key_len * 8, &octx->ksenc.ks);
+ aes_t4_set_decrypt_key(key, ctx->key_len * 8, &octx->ksdec.ks);
+ if (!CRYPTO_ocb128_init(&octx->ocb,
+ &octx->ksenc.ks, &octx->ksdec.ks,
(block128_f) aes_t4_encrypt,
- (block128_f) aes_t4_decrypt))
+ (block128_f) aes_t4_decrypt,
+ NULL))
return 0;
}
while (0);
# 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
if (gctx->iv != c->iv)
OPENSSL_free(gctx->iv);
gctx->iv = OPENSSL_malloc(arg);
- if (!gctx->iv)
+ if (gctx->iv == NULL)
return 0;
}
gctx->ivlen = arg;
case EVP_CTRL_AEAD_TLS1_AAD:
/* Save the AAD for later use */
- if (arg != 13)
+ if (arg != EVP_AEAD_TLS1_AAD_LEN)
return 0;
memcpy(c->buf, ptr, arg);
gctx->tls_aad_len = arg;
gctx_out->iv = out->iv;
else {
gctx_out->iv = OPENSSL_malloc(gctx->ivlen);
- if (!gctx_out->iv)
+ if (gctx_out->iv == NULL)
return 0;
memcpy(gctx_out->iv, gctx->iv, gctx->ivlen);
}
/* Retrieve tag */
CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, EVP_GCM_TLS_TAG_LEN);
/* If tag mismatch wipe buffer */
- if (memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN)) {
+ if (CRYPTO_memcmp(ctx->buf, in + len, EVP_GCM_TLS_TAG_LEN)) {
OPENSSL_cleanse(out, len);
goto err;
}
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(c->buf, ptr, arg);
+ cctx->tls_aad_len = arg;
+ {
+ uint16_t len = c->buf[arg - 2] << 8 | c->buf[arg - 1];
+ /* Correct length for explicit IV */
+ len -= EVP_CCM_TLS_EXPLICIT_IV_LEN;
+ /* If decrypting correct for tag too */
+ if (!c->encrypt)
+ len -= cctx->M;
+ c->buf[arg - 2] = len >> 8;
+ c->buf[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(c->iv, ptr, arg);
return 1;
case EVP_CTRL_AEAD_SET_IVLEN:
case EVP_CTRL_AEAD_SET_TAG:
if ((arg & 1) || arg < 4 || arg > 16)
return 0;
- if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
+ if (c->encrypt && ptr)
return 0;
if (ptr) {
cctx->tag_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 = ctx->cipher_data;
+ 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 (ctx->encrypt)
+ memcpy(out, ctx->buf, EVP_CCM_TLS_EXPLICIT_IV_LEN);
+ /* Get rest of IV from explicit IV */
+ memcpy(ctx->iv + 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, ctx->iv, 15 - cctx->L, len))
+ return -1;
+ /* Use saved AAD */
+ CRYPTO_ccm128_aad(ccm, ctx->buf, 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 (ctx->encrypt) {
+ 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 = ctx->cipher_data;
CCM128_CONTEXT *ccm = &cctx->ccm;
/* If not set up, return error */
- if (!cctx->iv_set && !cctx->key_set)
+ if (!cctx->key_set)
+ return -1;
+
+ if (cctx->tls_aad_len >= 0)
+ return aes_ccm_tls_cipher(ctx, out, in, len);
+
+ if (!cctx->iv_set)
return -1;
+
if (!ctx->encrypt && !cctx->tag_set)
return -1;
if (!out) {
!CRYPTO_ccm128_decrypt(ccm, in, out, len)) {
unsigned char tag[16];
if (CRYPTO_ccm128_tag(ccm, tag, cctx->M)) {
- if (!memcmp(tag, ctx->buf, cctx->M))
+ if (!CRYPTO_memcmp(tag, ctx->buf, cctx->M))
rv = len;
}
}
# define aes_ccm_cleanup NULL
-BLOCK_CIPHER_custom(NID_aes, 128, 1, 12, ccm, CCM, CUSTOM_FLAGS)
- BLOCK_CIPHER_custom(NID_aes, 192, 1, 12, ccm, CCM, CUSTOM_FLAGS)
- BLOCK_CIPHER_custom(NID_aes, 256, 1, 12, ccm, CCM, CUSTOM_FLAGS)
+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 {
newc = (EVP_CIPHER_CTX *)ptr;
new_octx = newc->cipher_data;
return CRYPTO_ocb128_copy_ctx(&new_octx->ocb, &octx->ocb,
- &new_octx->ksenc, &new_octx->ksdec);
+ &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 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 NULL
+# endif
+# endif
+
static int aes_ocb_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
* 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, ctx->key_len * 8, &octx->ksenc.ks);
+ HWAES_set_decrypt_key(key, ctx->key_len * 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, ctx->key_len * 8, &octx->ksenc);
- vpaes_set_decrypt_key(key, ctx->key_len * 8, &octx->ksdec);
- if (!CRYPTO_ocb128_init
- (&octx->ocb, &octx->ksenc, &octx->ksdec,
- (block128_f) vpaes_encrypt, (block128_f) vpaes_decrypt))
+ vpaes_set_encrypt_key(key, ctx->key_len * 8, &octx->ksenc.ks);
+ vpaes_set_decrypt_key(key, ctx->key_len * 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, ctx->key_len * 8, &octx->ksenc);
- AES_set_decrypt_key(key, ctx->key_len * 8, &octx->ksdec);
- if (!CRYPTO_ocb128_init(&octx->ocb, &octx->ksenc, &octx->ksdec,
+ AES_set_encrypt_key(key, ctx->key_len * 8, &octx->ksenc.ks);
+ AES_set_decrypt_key(key, ctx->key_len * 8, &octx->ksdec.ks);
+ if (!CRYPTO_ocb128_init(&octx->ocb,
+ &octx->ksenc.ks, &octx->ksdec.ks,
(block128_f) AES_encrypt,
- (block128_f) AES_decrypt))
+ (block128_f) AES_decrypt,
+ NULL))
return 0;
}
while (0);
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