*
*/
+#define OPENSSL_FIPSAPI
+
+#include <openssl/opensslconf.h>
#ifndef OPENSSL_NO_AES
#include <openssl/evp.h>
#include <openssl/err.h>
#include <string.h>
#include <assert.h>
+#include <openssl/aes.h>
+#include "evp_locl.h"
+#include "modes_lcl.h"
+#include <openssl/rand.h>
+
+typedef struct
+ {
+ AES_KEY ks;
+ } EVP_AES_KEY;
+
+#if defined(AES_ASM) && !defined(I386_ONLY) && ( \
+ ((defined(__i386) || defined(__i386__) || \
+ defined(_M_IX86)) && defined(OPENSSL_IA32_SSE2))|| \
+ defined(__x86_64) || defined(__x86_64__) || \
+ defined(_M_AMD64) || defined(_M_X64) || \
+ defined(__INTEL__) )
+
+int aesni_set_encrypt_key(const unsigned char *userKey, int bits,
+ AES_KEY *key);
+int aesni_set_decrypt_key(const unsigned char *userKey, int bits,
+ AES_KEY *key);
+
+void aesni_encrypt(const unsigned char *in, unsigned char *out,
+ const AES_KEY *key);
+void aesni_decrypt(const unsigned char *in, unsigned char *out,
+ const AES_KEY *key);
+
+void aesni_ecb_encrypt(const unsigned char *in,
+ unsigned char *out,
+ size_t length,
+ const AES_KEY *key,
+ int enc);
+void aesni_cbc_encrypt(const unsigned char *in,
+ unsigned char *out,
+ size_t length,
+ const AES_KEY *key,
+ unsigned char *ivec, int enc);
+
+void aesni_ctr32_encrypt_blocks(const unsigned char *in,
+ unsigned char *out,
+ size_t blocks,
+ const void *key,
+ const unsigned char *ivec);
+
+extern unsigned int OPENSSL_ia32cap_P[2];
+#define AESNI_CAPABLE (1<<(57-32))
+
+static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
+ {
+ int ret;
+
+ if (((ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_ECB_MODE
+ || (ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_CBC_MODE)
+ && !enc)
+ ret = OPENSSL_ia32cap_P[1]&AESNI_CAPABLE ?
+ aesni_set_decrypt_key(key, ctx->key_len*8, ctx->cipher_data):
+ AES_set_decrypt_key(key, ctx->key_len * 8, ctx->cipher_data);
+ else
+ ret = OPENSSL_ia32cap_P[1]&AESNI_CAPABLE ?
+ aesni_set_encrypt_key(key, ctx->key_len*8, ctx->cipher_data):
+ AES_set_encrypt_key(key, ctx->key_len * 8, ctx->cipher_data);
+
+ if(ret < 0)
+ {
+ EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
+ return 0;
+ }
-static int aes_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
- const unsigned char *iv, int enc);
-static int aes_ecb(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl);
-static int aes_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl);
-
-#define IMPLEMENT_AES_CIPHER(name, ciph_func, keylen, ivlen, mode) \
-static const EVP_CIPHER name##_cipher_st = \
- { \
- NID_##name, \
- 16,keylen,ivlen, \
- mode, \
- aes_init, \
- ciph_func, \
- NULL, \
- sizeof(EVP_CIPHER_CTX)-sizeof((((EVP_CIPHER_CTX *)NULL)->c))+ \
- sizeof((((EVP_CIPHER_CTX *)NULL)->c.rijndael)), \
- EVP_CIPHER_set_asn1_iv, \
- EVP_CIPHER_get_asn1_iv, \
- NULL, \
- NULL \
- }; \
-const EVP_CIPHER * EVP_##name(void) \
- { \
- return &name##_cipher_st; \
+ return 1;
}
-IMPLEMENT_AES_CIPHER(aes_128_ecb, aes_ecb, 16, 0, EVP_CIPH_ECB_MODE)
-IMPLEMENT_AES_CIPHER(aes_192_ecb, aes_ecb, 24, 0, EVP_CIPH_ECB_MODE)
-IMPLEMENT_AES_CIPHER(aes_256_ecb, aes_ecb, 32, 0, EVP_CIPH_ECB_MODE)
+static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ if (OPENSSL_ia32cap_P[1]&AESNI_CAPABLE)
+ aesni_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
+ else
+ AES_cbc_encrypt(in,out,len,ctx->cipher_data,ctx->iv,ctx->encrypt);
-IMPLEMENT_AES_CIPHER(aes_128_cbc, aes_cbc, 16, 16, EVP_CIPH_CBC_MODE)
-IMPLEMENT_AES_CIPHER(aes_192_cbc, aes_cbc, 24, 24, EVP_CIPH_CBC_MODE)
-IMPLEMENT_AES_CIPHER(aes_256_cbc, aes_cbc, 32, 32, EVP_CIPH_CBC_MODE)
+ return 1;
+}
+
+static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ size_t bl = ctx->cipher->block_size;
+
+ if (len<bl) return 1;
+
+ if (OPENSSL_ia32cap_P[1]&AESNI_CAPABLE)
+ aesni_ecb_encrypt(in,out,len,ctx->cipher_data,ctx->encrypt);
+ else {
+ size_t i;
+
+ if (ctx->encrypt) {
+ for (i=0,len-=bl;i<=len;i+=bl)
+ AES_encrypt(in+i,out+i,ctx->cipher_data);
+ } else {
+ for (i=0,len-=bl;i<=len;i+=bl)
+ AES_decrypt(in+i,out+i,ctx->cipher_data);
+ }
+ }
-static int aes_init(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ return 1;
+}
+
+static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
+ const unsigned char *in,size_t len)
+{
+ CRYPTO_ofb128_encrypt(in,out,len,ctx->cipher_data,
+ ctx->iv,&ctx->num,
+ OPENSSL_ia32cap_P[1]&AESNI_CAPABLE ?
+ (block128_f)aesni_encrypt :
+ (block128_f)AES_encrypt);
+ return 1;
+}
+
+static int aes_cfb_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
+ const unsigned char *in,size_t len)
+{
+ CRYPTO_cfb128_encrypt(in,out,len,ctx->cipher_data,
+ ctx->iv,&ctx->num,ctx->encrypt,
+ OPENSSL_ia32cap_P[1]&AESNI_CAPABLE ?
+ (block128_f)aesni_encrypt :
+ (block128_f)AES_encrypt);
+ return 1;
+}
+
+static int aes_cfb8_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
+ const unsigned char *in,size_t len)
+{
+ CRYPTO_cfb128_8_encrypt(in,out,len,ctx->cipher_data,
+ ctx->iv,&ctx->num,ctx->encrypt,
+ OPENSSL_ia32cap_P[1]&AESNI_CAPABLE ?
+ (block128_f)aesni_encrypt :
+ (block128_f)AES_encrypt);
+ return 1;
+}
+
+#define MAXBITCHUNK ((size_t)1<<(sizeof(size_t)*8-4))
+
+static int aes_cfb1_cipher(EVP_CIPHER_CTX *ctx,unsigned char *out,
+ const unsigned char *in,size_t len)
+{
+ block128_f block = OPENSSL_ia32cap_P[1]&AESNI_CAPABLE ?
+ (block128_f)aesni_encrypt :
+ (block128_f)AES_encrypt;
+
+ if (ctx->flags&EVP_CIPH_FLAG_LENGTH_BITS) {
+ CRYPTO_cfb128_1_encrypt(in,out,len,ctx->cipher_data,
+ ctx->iv,&ctx->num,ctx->encrypt,block);
+ return 1;
+ }
+
+ while (len>=MAXBITCHUNK) {
+ CRYPTO_cfb128_1_encrypt(in,out,MAXBITCHUNK*8,ctx->cipher_data,
+ ctx->iv,&ctx->num,ctx->encrypt,block);
+ len-=MAXBITCHUNK;
+ }
+ if (len)
+ CRYPTO_cfb128_1_encrypt(in,out,len*8,ctx->cipher_data,
+ ctx->iv,&ctx->num,ctx->encrypt,block);
+
+ return 1;
+}
+
+static int aes_counter(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ unsigned int num;
+ num = ctx->num;
+
+ if (OPENSSL_ia32cap_P[1]&AESNI_CAPABLE)
+ CRYPTO_ctr128_encrypt_ctr32(in,out,len,
+ ctx->cipher_data,ctx->iv,ctx->buf,&num,
+ (ctr128_f)aesni_ctr32_encrypt_blocks);
+ else
+ CRYPTO_ctr128_encrypt(in,out,len,
+ ctx->cipher_data,ctx->iv,ctx->buf,&num,
+ (block128_f)AES_encrypt);
+ ctx->num = (size_t)num;
+ return 1;
+}
+
+#define BLOCK_CIPHER_mydef(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_mydefs(nid,keylen,flags) \
+ BLOCK_CIPHER_mydef(nid,keylen,16,16,cbc,cbc,CBC,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
+ BLOCK_CIPHER_mydef(nid,keylen,16,0,ecb,ecb,ECB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
+ BLOCK_CIPHER_mydef(nid,keylen,1,16,ofb128,ofb,OFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
+ BLOCK_CIPHER_mydef(nid,keylen,1,16,cfb128,cfb,CFB,flags|EVP_CIPH_FLAG_DEFAULT_ASN1) \
+ BLOCK_CIPHER_mydef(nid,keylen,1,16,cfb1,cfb1,CFB,flags) \
+ BLOCK_CIPHER_mydef(nid,keylen,1,16,cfb8,cfb8,CFB,flags)
+
+BLOCK_CIPHER_mydefs(NID_aes,128,EVP_CIPH_FLAG_FIPS)
+BLOCK_CIPHER_mydefs(NID_aes,192,EVP_CIPH_FLAG_FIPS)
+BLOCK_CIPHER_mydefs(NID_aes,256,EVP_CIPH_FLAG_FIPS)
+
+#else
+
+static int aes_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
const unsigned char *iv, int enc)
{
- RIJNDAEL_KEY *k=&ctx->c.rijndael;
- if (enc)
- k->rounds = rijndaelKeySetupEnc(k->rd_key, key, ctx->key_len * 8);
+ int ret;
+
+ if (((ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_ECB_MODE
+ || (ctx->cipher->flags & EVP_CIPH_MODE) == EVP_CIPH_CBC_MODE)
+ && !enc)
+ ret=AES_set_decrypt_key(key, ctx->key_len * 8, ctx->cipher_data);
else
- k->rounds = rijndaelKeySetupDec(k->rd_key, key, ctx->key_len * 8);
+ ret=AES_set_encrypt_key(key, ctx->key_len * 8, ctx->cipher_data);
+
+ if(ret < 0)
+ {
+ EVPerr(EVP_F_AES_INIT_KEY,EVP_R_AES_KEY_SETUP_FAILED);
+ return 0;
+ }
+
+ return 1;
+ }
+
+#define data(ctx) EVP_C_DATA(EVP_AES_KEY,ctx)
+
+IMPLEMENT_BLOCK_CIPHER(aes_128, ks, AES, EVP_AES_KEY,
+ NID_aes_128, 16, 16, 16, 128,
+ EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,
+ aes_init_key, NULL, NULL, NULL, NULL)
+IMPLEMENT_BLOCK_CIPHER(aes_192, ks, AES, EVP_AES_KEY,
+ NID_aes_192, 16, 24, 16, 128,
+ EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,
+ aes_init_key, NULL, NULL, NULL, NULL)
+IMPLEMENT_BLOCK_CIPHER(aes_256, ks, AES, EVP_AES_KEY,
+ NID_aes_256, 16, 32, 16, 128,
+ EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1,
+ aes_init_key, NULL, NULL, NULL, NULL)
+
+#define IMPLEMENT_AES_CFBR(ksize,cbits) IMPLEMENT_CFBR(aes,AES,EVP_AES_KEY,ks,ksize,cbits,16,EVP_CIPH_FLAG_FIPS)
+
+IMPLEMENT_AES_CFBR(128,1)
+IMPLEMENT_AES_CFBR(192,1)
+IMPLEMENT_AES_CFBR(256,1)
+
+IMPLEMENT_AES_CFBR(128,8)
+IMPLEMENT_AES_CFBR(192,8)
+IMPLEMENT_AES_CFBR(256,8)
+
+static int aes_counter (EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+{
+ unsigned int num;
+ num = ctx->num;
+#ifdef AES_CTR_ASM
+ void AES_ctr32_encrypt(const unsigned char *in, unsigned char *out,
+ size_t blocks, const AES_KEY *key,
+ const unsigned char ivec[AES_BLOCK_SIZE]);
+
+ CRYPTO_ctr128_encrypt_ctr32(in,out,len,
+ &((EVP_AES_KEY *)ctx->cipher_data)->ks,
+ ctx->iv,ctx->buf,&num,(ctr128_f)AES_ctr32_encrypt);
+#else
+ CRYPTO_ctr128_encrypt(in,out,len,
+ &((EVP_AES_KEY *)ctx->cipher_data)->ks,
+ ctx->iv,ctx->buf,&num,(block128_f)AES_encrypt);
+#endif
+ ctx->num = (size_t)num;
+ return 1;
+}
+
+#endif
+
+static const EVP_CIPHER aes_128_ctr_cipher=
+ {
+ NID_aes_128_ctr,1,16,16,
+ EVP_CIPH_CTR_MODE|EVP_CIPH_FLAG_FIPS,
+ aes_init_key,
+ aes_counter,
+ NULL,
+ sizeof(EVP_AES_KEY),
+ NULL,
+ NULL,
+ NULL,
+ NULL
+ };
+
+const EVP_CIPHER *EVP_aes_128_ctr (void)
+{ return &aes_128_ctr_cipher; }
+
+static const EVP_CIPHER aes_192_ctr_cipher=
+ {
+ NID_aes_192_ctr,1,24,16,
+ EVP_CIPH_CTR_MODE|EVP_CIPH_FLAG_FIPS,
+ aes_init_key,
+ aes_counter,
+ NULL,
+ sizeof(EVP_AES_KEY),
+ NULL,
+ NULL,
+ NULL,
+ NULL
+ };
+
+const EVP_CIPHER *EVP_aes_192_ctr (void)
+{ return &aes_192_ctr_cipher; }
+
+static const EVP_CIPHER aes_256_ctr_cipher=
+ {
+ NID_aes_256_ctr,1,32,16,
+ EVP_CIPH_CTR_MODE|EVP_CIPH_FLAG_FIPS,
+ aes_init_key,
+ aes_counter,
+ NULL,
+ sizeof(EVP_AES_KEY),
+ NULL,
+ NULL,
+ NULL,
+ NULL
+ };
+
+const EVP_CIPHER *EVP_aes_256_ctr (void)
+{ return &aes_256_ctr_cipher; }
+
+typedef struct
+ {
+ /* AES key schedule to use */
+ AES_KEY ks;
+ /* Set if key initialised */
+ int key_set;
+ /* Set if an iv is set */
+ int iv_set;
+ GCM128_CONTEXT gcm;
+ /* Temporary IV store */
+ unsigned char *iv;
+ /* IV length */
+ int ivlen;
+ int taglen;
+ /* It is OK to generate IVs */
+ int iv_gen;
+ } EVP_AES_GCM_CTX;
+
+static int aes_gcm_cleanup(EVP_CIPHER_CTX *c)
+ {
+ EVP_AES_GCM_CTX *gctx = c->cipher_data;
+ OPENSSL_cleanse(&gctx->gcm, sizeof(gctx->gcm));
+ if (gctx->iv != c->iv)
+ 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 = c->cipher_data;
+ switch (type)
+ {
+ case EVP_CTRL_INIT:
+ gctx->key_set = 0;
+ gctx->iv_set = 0;
+ gctx->ivlen = c->cipher->iv_len;
+ gctx->iv = c->iv;
+ gctx->taglen = -1;
+ gctx->iv_gen = 0;
+ return 1;
+
+ case EVP_CTRL_GCM_SET_IVLEN:
+ if (arg <= 0)
+ return 0;
+#ifdef OPENSSL_FIPS
+ if (FIPS_module_mode() && !(c->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW)
+ && arg < 12)
+ return 0;
+#endif
+ /* Allocate memory for IV if needed */
+ if ((arg > EVP_MAX_IV_LENGTH) && (arg > gctx->ivlen))
+ {
+ if (gctx->iv != c->iv)
+ OPENSSL_free(gctx->iv);
+ gctx->iv = OPENSSL_malloc(arg);
+ if (!gctx->iv)
+ return 0;
+ }
+ gctx->ivlen = arg;
+ return 1;
+
+ case EVP_CTRL_GCM_SET_TAG:
+ if (arg <= 0 || arg > 16 || c->encrypt)
+ return 0;
+ memcpy(c->buf, ptr, arg);
+ gctx->taglen = arg;
+ return 1;
+
+ case EVP_CTRL_GCM_GET_TAG:
+ if (arg <= 0 || arg > 16 || !c->encrypt || gctx->taglen < 0)
+ return 0;
+ memcpy(ptr, c->buf, 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 (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);
+ memcpy(ptr, gctx->iv, gctx->ivlen);
+ /* 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;
+
+ 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 = ctx->cipher_data;
+ if (!iv && !key)
+ return 1;
+ if (key)
+ {
+ AES_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks);
+ CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)AES_encrypt);
+ /* 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;
}
-static int aes_ecb(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl)
+static int aes_gcm(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
{
- RIJNDAEL_KEY *k=&ctx->c.rijndael;
- while(inl > 0)
+ EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
+ /* If not set up, return error */
+ if (!gctx->iv_set && !gctx->key_set)
+ return -1;
+ if (!ctx->encrypt && gctx->taglen < 0)
+ return -1;
+ if (in)
{
- if(ctx->encrypt)
- rijndaelEncrypt(k->rd_key,k->rounds, in, out);
+ if (out == NULL)
+ {
+ if (CRYPTO_gcm128_aad(&gctx->gcm, in, len))
+ return -1;
+ }
+ else if (ctx->encrypt)
+ {
+ if (CRYPTO_gcm128_encrypt(&gctx->gcm, in, out, len))
+ return -1;
+ }
else
- rijndaelDecrypt(k->rd_key,k->rounds, in, out);
- inl-=16;
- in+=16;
- out+=16;
+ {
+ if (CRYPTO_gcm128_decrypt(&gctx->gcm, in, out, len))
+ return -1;
+ }
+ return len;
+ }
+ else
+ {
+ if (!ctx->encrypt)
+ {
+ if (CRYPTO_gcm128_finish(&gctx->gcm,
+ ctx->buf, gctx->taglen) != 0)
+ return -1;
+ gctx->iv_set = 0;
+ return 0;
+ }
+ CRYPTO_gcm128_tag(&gctx->gcm, ctx->buf, 16);
+ gctx->taglen = 16;
+ /* Don't reuse the IV */
+ gctx->iv_set = 0;
+ return 0;
}
- assert(inl == 0);
+ }
+
+static const EVP_CIPHER aes_128_gcm_cipher=
+ {
+ NID_aes_128_gcm,1,16,12,
+ EVP_CIPH_GCM_MODE|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1
+ | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
+ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT,
+ aes_gcm_init_key,
+ aes_gcm,
+ aes_gcm_cleanup,
+ sizeof(EVP_AES_GCM_CTX),
+ NULL,
+ NULL,
+ aes_gcm_ctrl,
+ NULL
+ };
+
+const EVP_CIPHER *EVP_aes_128_gcm (void)
+{ return &aes_128_gcm_cipher; }
+
+static const EVP_CIPHER aes_192_gcm_cipher=
+ {
+ NID_aes_192_gcm,1,24,12,
+ EVP_CIPH_GCM_MODE|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1
+ | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
+ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT,
+ aes_gcm_init_key,
+ aes_gcm,
+ aes_gcm_cleanup,
+ sizeof(EVP_AES_GCM_CTX),
+ NULL,
+ NULL,
+ aes_gcm_ctrl,
+ NULL
+ };
+
+const EVP_CIPHER *EVP_aes_192_gcm (void)
+{ return &aes_192_gcm_cipher; }
+
+static const EVP_CIPHER aes_256_gcm_cipher=
+ {
+ NID_aes_256_gcm,1,32,12,
+ EVP_CIPH_GCM_MODE|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1
+ | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
+ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT,
+ aes_gcm_init_key,
+ aes_gcm,
+ aes_gcm_cleanup,
+ sizeof(EVP_AES_GCM_CTX),
+ NULL,
+ NULL,
+ aes_gcm_ctrl,
+ NULL
+ };
+
+const EVP_CIPHER *EVP_aes_256_gcm (void)
+{ return &aes_256_gcm_cipher; }
+
+typedef struct
+ {
+ /* AES key schedules to use */
+ AES_KEY ks1, ks2;
+ XTS128_CONTEXT xts;
+ } EVP_AES_XTS_CTX;
+
+static int aes_xts_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
+ {
+ EVP_AES_XTS_CTX *xctx = c->cipher_data;
+ 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_cbc(EVP_CIPHER_CTX *ctx, unsigned char *out,
- const unsigned char *in, unsigned int inl)
+static int aes_xts_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key,
+ const unsigned char *iv, int enc)
{
- int n;
- unsigned char tmp[16];
- RIJNDAEL_KEY *k=&ctx->c.rijndael;
- while(inl > 0)
+ EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
+ if (!iv && !key)
+ return 1;
+
+ if (key)
{
- if(ctx->encrypt)
+ /* key_len is two AES keys */
+ if (enc)
{
- for(n=0 ; n < 16 ; n++)
- tmp[n] = in[n] ^ ctx->iv[n];
- rijndaelEncrypt(k->rd_key,k->rounds, tmp, out);
- memcpy(ctx->iv,out,16);
+ AES_set_encrypt_key(key, ctx->key_len * 4, &xctx->ks1);
+ xctx->xts.block1 = (block128_f)AES_encrypt;
}
else
{
- memcpy(tmp, in, 16);
- rijndaelDecrypt(k->rd_key,k->rounds, in, out);
- for(n=0 ; n < 16 ; n++)
- out[n] ^= ctx->iv[n];
- memcpy(ctx->iv,tmp,16);
+ AES_set_decrypt_key(key, ctx->key_len * 4, &xctx->ks1);
+ xctx->xts.block1 = (block128_f)AES_decrypt;
}
- inl-=16;
- in+=16;
- out+=16;
+
+ AES_set_encrypt_key(key + ctx->key_len/2,
+ ctx->key_len * 4, &xctx->ks2);
+ xctx->xts.block2 = (block128_f)AES_encrypt;
+
+ xctx->xts.key1 = &xctx->ks1;
}
- assert(inl == 0);
+
+ if (iv)
+ {
+ xctx->xts.key2 = &xctx->ks2;
+ memcpy(ctx->iv, iv, 16);
+ }
+
return 1;
}
+
+static int aes_xts(EVP_CIPHER_CTX *ctx, unsigned char *out,
+ const unsigned char *in, size_t len)
+ {
+ EVP_AES_XTS_CTX *xctx = ctx->cipher_data;
+ if (!xctx->xts.key1 || !xctx->xts.key2)
+ return -1;
+ if (!out || !in)
+ return -1;
+#ifdef OPENSSL_FIPS
+ /* Requirement of SP800-38E */
+ if (FIPS_module_mode() && !(ctx->flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW) &&
+ (len > (1L<<20)*16))
+ {
+ EVPerr(EVP_F_AES_XTS, EVP_R_TOO_LARGE);
+ return -1;
+ }
+#endif
+ if (CRYPTO_xts128_encrypt(&xctx->xts, ctx->iv, in, out, len,
+ ctx->encrypt))
+ return -1;
+ return len;
+ }
+
+static const EVP_CIPHER aes_128_xts_cipher=
+ {
+ NID_aes_128_xts,16,32,16,
+ EVP_CIPH_XTS_MODE|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1
+ | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
+ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT,
+ aes_xts_init_key,
+ aes_xts,
+ 0,
+ sizeof(EVP_AES_XTS_CTX),
+ NULL,
+ NULL,
+ aes_xts_ctrl,
+ NULL
+ };
+
+const EVP_CIPHER *EVP_aes_128_xts (void)
+{ return &aes_128_xts_cipher; }
+
+static const EVP_CIPHER aes_256_xts_cipher=
+ {
+ NID_aes_256_xts,16,64,16,
+ EVP_CIPH_XTS_MODE|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1
+ | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
+ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT,
+ aes_xts_init_key,
+ aes_xts,
+ 0,
+ sizeof(EVP_AES_XTS_CTX),
+ NULL,
+ NULL,
+ aes_xts_ctrl,
+ NULL
+ };
+
+const EVP_CIPHER *EVP_aes_256_xts (void)
+{ return &aes_256_xts_cipher; }
+
+typedef struct
+ {
+ /* AES key schedule to use */
+ AES_KEY ks;
+ /* Set if key initialised */
+ int key_set;
+ /* Set if an iv is set */
+ int iv_set;
+ /* Set if tag is valid */
+ int tag_set;
+ /* Set if message length set */
+ int len_set;
+ /* L and M parameters from RFC3610 */
+ int L, M;
+ CCM128_CONTEXT ccm;
+ } EVP_AES_CCM_CTX;
+
+static int aes_ccm_ctrl(EVP_CIPHER_CTX *c, int type, int arg, void *ptr)
+ {
+ EVP_AES_CCM_CTX *cctx = c->cipher_data;
+ 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;
+ return 1;
+
+ case EVP_CTRL_CCM_SET_IVLEN:
+ arg = 15 - arg;
+ case EVP_CTRL_CCM_SET_L:
+ if (arg < 2 || arg > 8)
+ return 0;
+ cctx->L = arg;
+ return 1;
+
+ case EVP_CTRL_CCM_SET_TAG:
+ if ((arg & 1) || arg < 4 || arg > 16)
+ return 0;
+ if ((c->encrypt && ptr) || (!c->encrypt && !ptr))
+ return 0;
+ if (ptr)
+ {
+ cctx->tag_set = 1;
+ memcpy(c->buf, ptr, arg);
+ }
+ cctx->M = arg;
+ return 1;
+
+ case EVP_CTRL_CCM_GET_TAG:
+ if (!c->encrypt || !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;
+
+ 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 = ctx->cipher_data;
+ if (!iv && !key)
+ return 1;
+ if (key)
+ {
+ AES_set_encrypt_key(key, ctx->key_len * 8, &cctx->ks);
+ CRYPTO_ccm128_init(&cctx->ccm, cctx->M, cctx->L,
+ &cctx->ks, (block128_f)AES_encrypt);
+ cctx->key_set = 1;
+ }
+ if (iv)
+ {
+ memcpy(ctx->iv, iv, 15 - cctx->L);
+ cctx->iv_set = 1;
+ }
+ return 1;
+ }
+
+static int aes_ccm(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)
+ return -1;
+ if (!ctx->encrypt && !cctx->tag_set)
+ return -1;
+ if (!out)
+ {
+ if (!in)
+ {
+ if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 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;
+ }
+ /* EVP_*Final() doesn't return any data */
+ if (!in)
+ return 0;
+ /* If not set length yet do it */
+ if (!cctx->len_set)
+ {
+ if (CRYPTO_ccm128_setiv(ccm, ctx->iv, 15 - cctx->L, len))
+ return -1;
+ cctx->len_set = 1;
+ }
+ if (ctx->encrypt)
+ {
+ if (CRYPTO_ccm128_encrypt(ccm, in, out, len))
+ return -1;
+ cctx->tag_set = 1;
+ return len;
+ }
+ else
+ {
+ int rv = -1;
+ if (!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))
+ rv = len;
+ }
+ }
+ if (rv == -1)
+ OPENSSL_cleanse(out, len);
+ cctx->iv_set = 0;
+ cctx->tag_set = 0;
+ cctx->len_set = 0;
+ return rv;
+ }
+
+ }
+
+static const EVP_CIPHER aes_128_ccm_cipher=
+ {
+ NID_aes_128_ccm,1,16,12,
+ EVP_CIPH_CCM_MODE|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1
+ | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
+ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT,
+ aes_ccm_init_key,
+ aes_ccm,
+ 0,
+ sizeof(EVP_AES_CCM_CTX),
+ NULL,
+ NULL,
+ aes_ccm_ctrl,
+ NULL
+ };
+
+const EVP_CIPHER *EVP_aes_128_ccm (void)
+{ return &aes_128_ccm_cipher; }
+
+static const EVP_CIPHER aes_192_ccm_cipher=
+ {
+ NID_aes_192_ccm,1,24,12,
+ EVP_CIPH_CCM_MODE|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1
+ | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
+ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT,
+ aes_ccm_init_key,
+ aes_ccm,
+ 0,
+ sizeof(EVP_AES_CCM_CTX),
+ NULL,
+ NULL,
+ aes_ccm_ctrl,
+ NULL
+ };
+
+const EVP_CIPHER *EVP_aes_192_ccm (void)
+{ return &aes_192_ccm_cipher; }
+
+static const EVP_CIPHER aes_256_ccm_cipher=
+ {
+ NID_aes_256_ccm,1,32,12,
+ EVP_CIPH_CCM_MODE|EVP_CIPH_FLAG_FIPS|EVP_CIPH_FLAG_DEFAULT_ASN1
+ | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER
+ | EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT,
+ aes_ccm_init_key,
+ aes_ccm,
+ 0,
+ sizeof(EVP_AES_CCM_CTX),
+ NULL,
+ NULL,
+ aes_ccm_ctrl,
+ NULL
+ };
+
+const EVP_CIPHER *EVP_aes_256_ccm (void)
+{ return &aes_256_ccm_cipher; }
+
#endif