- /* ====================================================================
- * Copyright (c) 2001-2011 The OpenSSL Project. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. All advertising materials mentioning features or use of this
- * software must display the following acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
- *
- * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
- * endorse or promote products derived from this software without
- * prior written permission. For written permission, please contact
- * openssl-core@openssl.org.
- *
- * 5. Products derived from this software may not be called "OpenSSL"
- * nor may "OpenSSL" appear in their names without prior written
- * permission of the OpenSSL Project.
- *
- * 6. Redistributions of any form whatsoever must retain the following
- * acknowledgment:
- * "This product includes software developed by the OpenSSL Project
- * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
- *
- * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
- * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
- * OF THE POSSIBILITY OF SUCH DAMAGE.
- * ==================================================================== */
-
- #include <string.h>
-
- #include <openssl/aead.h>
- #include <openssl/aes.h>
- #include <openssl/cipher.h>
- #include <openssl/cpu.h>
- #include <openssl/err.h>
- #include <openssl/mem.h>
- #include <openssl/modes.h>
- #include <openssl/obj.h>
- #include <openssl/rand.h>
- #include <openssl/sha.h>
-
- #include "internal.h"
- #include "../internal.h"
- #include "../modes/internal.h"
-
- #if defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
- #include "../arm_arch.h"
- #endif
-
-
- typedef struct {
- union {
- double align;
- AES_KEY ks;
- } ks;
- block128_f block;
- union {
- cbc128_f cbc;
- ctr128_f ctr;
- } stream;
- } EVP_AES_KEY;
-
- typedef struct {
- union {
- double align;
- AES_KEY ks;
- } ks; /* AES key schedule to use */
- int key_set; /* Set if key initialised */
- int iv_set; /* Set if an iv is set */
- GCM128_CONTEXT gcm;
- uint8_t *iv; /* Temporary IV store */
- int ivlen; /* IV length */
- int taglen;
- int iv_gen; /* It is OK to generate IVs */
- ctr128_f ctr;
- } EVP_AES_GCM_CTX;
-
- #if !defined(OPENSSL_NO_ASM) && \
- (defined(OPENSSL_X86_64) || defined(OPENSSL_X86))
- #define VPAES
- extern unsigned int OPENSSL_ia32cap_P[];
-
- static char vpaes_capable(void) {
- return (OPENSSL_ia32cap_P[1] & (1 << (41 - 32))) != 0;
- }
-
- #if defined(OPENSSL_X86_64)
- #define BSAES
- static char bsaes_capable(void) {
- return vpaes_capable();
- }
- #endif
-
- #elif !defined(OPENSSL_NO_ASM) && \
- (defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64))
- #include "../arm_arch.h"
-
- #if defined(OPENSSL_ARM) && __ARM_MAX_ARCH__ >= 7
- #define BSAES
- static char bsaes_capable(void) {
- return CRYPTO_is_NEON_capable();
- }
- #endif
-
- #define HWAES
- static char hwaes_capable(void) {
- return (OPENSSL_armcap_P & ARMV8_AES) != 0;
- }
-
- int aes_v8_set_encrypt_key(const uint8_t *user_key, const int bits,
- AES_KEY *key);
- int aes_v8_set_decrypt_key(const uint8_t *user_key, const int bits,
- AES_KEY *key);
- void aes_v8_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
- void aes_v8_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
- void aes_v8_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
- const AES_KEY *key, uint8_t *ivec, const int enc);
- void aes_v8_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len,
- const AES_KEY *key, const uint8_t ivec[16]);
-
- #endif /* OPENSSL_ARM */
-
- #if defined(BSAES)
- /* On platforms where BSAES gets defined (just above), then these functions are
- * provided by asm. */
- void bsaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
- const AES_KEY *key, uint8_t ivec[16], int enc);
- void bsaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len,
- const AES_KEY *key, const uint8_t ivec[16]);
- #else
- static char bsaes_capable(void) {
- return 0;
- }
-
- /* On other platforms, bsaes_capable() will always return false and so the
- * following will never be called. */
- void bsaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
- const AES_KEY *key, uint8_t ivec[16], int enc) {
- abort();
- }
-
- void bsaes_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len,
- const AES_KEY *key, const uint8_t ivec[16]) {
- abort();
- }
- #endif
-
- #if defined(VPAES)
- /* On platforms where VPAES gets defined (just above), then these functions are
- * provided by asm. */
- int vpaes_set_encrypt_key(const uint8_t *userKey, int bits, AES_KEY *key);
- int vpaes_set_decrypt_key(const uint8_t *userKey, int bits, AES_KEY *key);
-
- void vpaes_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
- void vpaes_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
-
- void vpaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
- const AES_KEY *key, uint8_t *ivec, int enc);
- #else
- static char vpaes_capable(void) {
- return 0;
- }
-
- /* On other platforms, vpaes_capable() will always return false and so the
- * following will never be called. */
- int vpaes_set_encrypt_key(const uint8_t *userKey, int bits, AES_KEY *key) {
- abort();
- }
- int vpaes_set_decrypt_key(const uint8_t *userKey, int bits, AES_KEY *key) {
- abort();
- }
- void vpaes_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
- abort();
- }
- void vpaes_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
- abort();
- }
- void vpaes_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
- const AES_KEY *key, uint8_t *ivec, int enc) {
- abort();
- }
- #endif
-
- #if !defined(HWAES)
- /* If HWAES isn't defined then we provide dummy functions for each of the hwaes
- * functions. */
- int hwaes_capable(void) {
- return 0;
- }
-
- int aes_v8_set_encrypt_key(const uint8_t *user_key, int bits,
- AES_KEY *key) {
- abort();
- }
-
- int aes_v8_set_decrypt_key(const uint8_t *user_key, int bits, AES_KEY *key) {
- abort();
- }
-
- void aes_v8_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
- abort();
- }
-
- void aes_v8_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
- abort();
- }
-
- void aes_v8_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
- const AES_KEY *key, uint8_t *ivec, int enc) {
- abort();
- }
-
- void aes_v8_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t len,
- const AES_KEY *key, const uint8_t ivec[16]) {
- abort();
- }
- #endif
-
- #if !defined(OPENSSL_NO_ASM) && \
- (defined(OPENSSL_X86_64) || defined(OPENSSL_X86))
- int aesni_set_encrypt_key(const uint8_t *userKey, int bits, AES_KEY *key);
- int aesni_set_decrypt_key(const uint8_t *userKey, int bits, AES_KEY *key);
-
- void aesni_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
- void aesni_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key);
-
- void aesni_ecb_encrypt(const uint8_t *in, uint8_t *out, size_t length,
- const AES_KEY *key, int enc);
- void aesni_cbc_encrypt(const uint8_t *in, uint8_t *out, size_t length,
- const AES_KEY *key, uint8_t *ivec, int enc);
-
- void aesni_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t blocks,
- const void *key, const uint8_t *ivec);
-
- #if defined(OPENSSL_X86_64)
- size_t aesni_gcm_encrypt(const uint8_t *in, uint8_t *out, size_t len,
- const void *key, uint8_t ivec[16], uint64_t *Xi);
- #define AES_gcm_encrypt aesni_gcm_encrypt
- size_t aesni_gcm_decrypt(const uint8_t *in, uint8_t *out, size_t len,
- const void *key, uint8_t ivec[16], uint64_t *Xi);
- #define AES_gcm_decrypt aesni_gcm_decrypt
- void gcm_ghash_avx(uint64_t Xi[2], const u128 Htable[16], const uint8_t *in,
- size_t len);
- #define AES_GCM_ASM(gctx) \
- (gctx->ctr == aesni_ctr32_encrypt_blocks && gctx->gcm.ghash == gcm_ghash_avx)
- #endif /* OPENSSL_X86_64 */
-
- #else
-
- /* On other platforms, aesni_capable() will always return false and so the
- * following will never be called. */
- void aesni_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
- abort();
- }
- int aesni_set_encrypt_key(const uint8_t *userKey, int bits, AES_KEY *key) {
- abort();
- }
- void aesni_ctr32_encrypt_blocks(const uint8_t *in, uint8_t *out, size_t blocks,
- const void *key, const uint8_t *ivec) {
- abort();
- }
-
- #endif
-
- static int aes_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
- const uint8_t *iv, int enc)
- OPENSSL_SUPPRESS_UNREACHABLE_CODE_WARNINGS {
- int ret, mode;
- EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
-
- mode = ctx->cipher->flags & EVP_CIPH_MODE_MASK;
- if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) && !enc) {
- if (hwaes_capable()) {
- ret = aes_v8_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
- dat->block = (block128_f)aes_v8_decrypt;
- dat->stream.cbc = NULL;
- if (mode == EVP_CIPH_CBC_MODE) {
- dat->stream.cbc = (cbc128_f)aes_v8_cbc_encrypt;
- }
- } else if (bsaes_capable() && mode == EVP_CIPH_CBC_MODE) {
- ret = AES_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
- dat->block = (block128_f)AES_decrypt;
- dat->stream.cbc = (cbc128_f)bsaes_cbc_encrypt;
- } else if (vpaes_capable()) {
- ret = vpaes_set_decrypt_key(key, ctx->key_len * 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 {
- ret = AES_set_decrypt_key(key, ctx->key_len * 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 if (hwaes_capable()) {
- ret = aes_v8_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
- dat->block = (block128_f)aes_v8_encrypt;
- dat->stream.cbc = NULL;
- if (mode == EVP_CIPH_CBC_MODE) {
- dat->stream.cbc = (cbc128_f)aes_v8_cbc_encrypt;
- } else if (mode == EVP_CIPH_CTR_MODE) {
- dat->stream.ctr = (ctr128_f)aes_v8_ctr32_encrypt_blocks;
- }
- } else if (bsaes_capable() && mode == EVP_CIPH_CTR_MODE) {
- ret = AES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
- dat->block = (block128_f)AES_encrypt;
- dat->stream.ctr = (ctr128_f)bsaes_ctr32_encrypt_blocks;
- } else if (vpaes_capable()) {
- ret = vpaes_set_encrypt_key(key, ctx->key_len * 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 {
- ret = AES_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
- dat->block = (block128_f)AES_encrypt;
- dat->stream.cbc =
- mode == EVP_CIPH_CBC_MODE ? (cbc128_f)AES_cbc_encrypt : NULL;
- }
-
- if (ret < 0) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_AES_KEY_SETUP_FAILED);
- return 0;
- }
-
- return 1;
- }
-
- static int aes_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
- size_t len) {
- EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
-
- if (dat->stream.cbc) {
- (*dat->stream.cbc)(in, out, len, &dat->ks, ctx->iv, ctx->encrypt);
- } else if (ctx->encrypt) {
- CRYPTO_cbc128_encrypt(in, out, len, &dat->ks, ctx->iv, dat->block);
- } else {
- CRYPTO_cbc128_decrypt(in, out, len, &dat->ks, ctx->iv, dat->block);
- }
-
- return 1;
- }
-
- static int aes_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
- size_t len) {
- size_t bl = ctx->cipher->block_size;
- size_t i;
- EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
-
- 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_ctr_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
- size_t len) {
- unsigned int num = ctx->num;
- EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
-
- if (dat->stream.ctr) {
- CRYPTO_ctr128_encrypt_ctr32(in, out, len, &dat->ks, ctx->iv, ctx->buf, &num,
- dat->stream.ctr);
- } else {
- CRYPTO_ctr128_encrypt(in, out, len, &dat->ks, ctx->iv, ctx->buf, &num,
- dat->block);
- }
- ctx->num = (size_t)num;
- return 1;
- }
-
- static int aes_ofb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
- size_t len) {
- EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
-
- CRYPTO_ofb128_encrypt(in, out, len, &dat->ks, ctx->iv, &ctx->num, dat->block);
- return 1;
- }
-
- static char aesni_capable(void);
-
- static ctr128_f aes_ctr_set_key(AES_KEY *aes_key, GCM128_CONTEXT *gcm_ctx,
- block128_f *out_block, const uint8_t *key,
- size_t key_len)
- OPENSSL_SUPPRESS_UNREACHABLE_CODE_WARNINGS {
- if (aesni_capable()) {
- aesni_set_encrypt_key(key, key_len * 8, aes_key);
- if (gcm_ctx != NULL) {
- CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)aesni_encrypt);
- }
- if (out_block) {
- *out_block = (block128_f) aesni_encrypt;
- }
- return (ctr128_f)aesni_ctr32_encrypt_blocks;
- }
-
- if (hwaes_capable()) {
- aes_v8_set_encrypt_key(key, key_len * 8, aes_key);
- if (gcm_ctx != NULL) {
- CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)aes_v8_encrypt);
- }
- if (out_block) {
- *out_block = (block128_f) aes_v8_encrypt;
- }
- return (ctr128_f)aes_v8_ctr32_encrypt_blocks;
- }
-
- if (bsaes_capable()) {
- AES_set_encrypt_key(key, key_len * 8, aes_key);
- if (gcm_ctx != NULL) {
- CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)AES_encrypt);
- }
- if (out_block) {
- *out_block = (block128_f) AES_encrypt;
- }
- return (ctr128_f)bsaes_ctr32_encrypt_blocks;
- }
-
- if (vpaes_capable()) {
- vpaes_set_encrypt_key(key, key_len * 8, aes_key);
- if (out_block) {
- *out_block = (block128_f) vpaes_encrypt;
- }
- if (gcm_ctx != NULL) {
- CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)vpaes_encrypt);
- }
- return NULL;
- }
-
- AES_set_encrypt_key(key, key_len * 8, aes_key);
- if (gcm_ctx != NULL) {
- CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)AES_encrypt);
- }
- if (out_block) {
- *out_block = (block128_f) AES_encrypt;
- }
- return NULL;
- }
-
- static int aes_gcm_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
- const uint8_t *iv, int enc) {
- EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
- if (!iv && !key) {
- return 1;
- }
- if (key) {
- gctx->ctr =
- aes_ctr_set_key(&gctx->ks.ks, &gctx->gcm, NULL, key, ctx->key_len);
- /* 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 void 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);
- }
- }
-
- /* increment counter (64-bit int) by 1 */
- static void ctr64_inc(uint8_t *counter) {
- int n = 8;
- uint8_t 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;
- }
-
- /* 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 (c->encrypt && !RAND_bytes(gctx->iv + arg, gctx->ivlen - arg)) {
- 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 || c->encrypt) {
- 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_COPY: {
- EVP_CIPHER_CTX *out = ptr;
- EVP_AES_GCM_CTX *gctx_out = out->cipher_data;
- if (gctx->gcm.key) {
- if (gctx->gcm.key != &gctx->ks) {
- return 0;
- }
- gctx_out->gcm.key = &gctx_out->ks;
- }
- if (gctx->iv == c->iv) {
- gctx_out->iv = out->iv;
- } else {
- gctx_out->iv = OPENSSL_malloc(gctx->ivlen);
- if (!gctx_out->iv) {
- return 0;
- }
- memcpy(gctx_out->iv, gctx->iv, gctx->ivlen);
- }
- return 1;
- }
-
- default:
- return -1;
- }
- }
-
- static int aes_gcm_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out, const uint8_t *in,
- size_t len) {
- EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
-
- /* If not set up, return error */
- if (!gctx->key_set) {
- return -1;
- }
- if (!gctx->iv_set) {
- return -1;
- }
-
- if (in) {
- if (out == NULL) {
- if (!CRYPTO_gcm128_aad(&gctx->gcm, in, len)) {
- return -1;
- }
- } else if (ctx->encrypt) {
- 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 (!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 (!CRYPTO_gcm128_decrypt(&gctx->gcm, in + bulk, out + bulk,
- len - bulk)) {
- return -1;
- }
- }
- }
- return len;
- } else {
- if (!ctx->encrypt) {
- if (gctx->taglen < 0 ||
- !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;
- }
- }
-
- static const EVP_CIPHER aes_128_cbc = {
- NID_aes_128_cbc, 16 /* block_size */, 16 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_CBC_MODE,
- NULL /* app_data */, aes_init_key, aes_cbc_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aes_128_ctr = {
- NID_aes_128_ctr, 1 /* block_size */, 16 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_CTR_MODE,
- NULL /* app_data */, aes_init_key, aes_ctr_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aes_128_ecb = {
- NID_aes_128_ecb, 16 /* block_size */, 16 /* key_size */,
- 0 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_ECB_MODE,
- NULL /* app_data */, aes_init_key, aes_ecb_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aes_128_ofb = {
- NID_aes_128_ofb128, 1 /* block_size */, 16 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_OFB_MODE,
- NULL /* app_data */, aes_init_key, aes_ofb_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aes_128_gcm = {
- NID_aes_128_gcm, 1 /* block_size */, 16 /* key_size */, 12 /* iv_len */,
- sizeof(EVP_AES_GCM_CTX),
- EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER |
- EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT |
- EVP_CIPH_FLAG_AEAD_CIPHER,
- NULL /* app_data */, aes_gcm_init_key, aes_gcm_cipher, aes_gcm_cleanup,
- aes_gcm_ctrl};
-
-
- static const EVP_CIPHER aes_192_cbc = {
- NID_aes_192_cbc, 16 /* block_size */, 24 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_CBC_MODE,
- NULL /* app_data */, aes_init_key, aes_cbc_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aes_192_ctr = {
- NID_aes_192_ctr, 1 /* block_size */, 24 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_CTR_MODE,
- NULL /* app_data */, aes_init_key, aes_ctr_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aes_192_ecb = {
- NID_aes_192_ecb, 16 /* block_size */, 24 /* key_size */,
- 0 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_ECB_MODE,
- NULL /* app_data */, aes_init_key, aes_ecb_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aes_192_gcm = {
- NID_aes_192_gcm, 1 /* block_size */, 24 /* key_size */, 12 /* iv_len */,
- sizeof(EVP_AES_GCM_CTX),
- EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER |
- EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT |
- EVP_CIPH_FLAG_AEAD_CIPHER,
- NULL /* app_data */, aes_gcm_init_key, aes_gcm_cipher, aes_gcm_cleanup,
- aes_gcm_ctrl};
-
-
- static const EVP_CIPHER aes_256_cbc = {
- NID_aes_256_cbc, 16 /* block_size */, 32 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_CBC_MODE,
- NULL /* app_data */, aes_init_key, aes_cbc_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aes_256_ctr = {
- NID_aes_256_ctr, 1 /* block_size */, 32 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_CTR_MODE,
- NULL /* app_data */, aes_init_key, aes_ctr_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aes_256_ecb = {
- NID_aes_256_ecb, 16 /* block_size */, 32 /* key_size */,
- 0 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_ECB_MODE,
- NULL /* app_data */, aes_init_key, aes_ecb_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aes_256_ofb = {
- NID_aes_256_ofb128, 1 /* block_size */, 32 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_OFB_MODE,
- NULL /* app_data */, aes_init_key, aes_ofb_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aes_256_gcm = {
- NID_aes_256_gcm, 1 /* block_size */, 32 /* key_size */, 12 /* iv_len */,
- sizeof(EVP_AES_GCM_CTX),
- EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER |
- EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT |
- EVP_CIPH_FLAG_AEAD_CIPHER,
- NULL /* app_data */, aes_gcm_init_key, aes_gcm_cipher, aes_gcm_cleanup,
- aes_gcm_ctrl};
-
- #if !defined(OPENSSL_NO_ASM) && \
- (defined(OPENSSL_X86_64) || defined(OPENSSL_X86))
-
- /* AES-NI section. */
-
- static char aesni_capable(void) {
- return (OPENSSL_ia32cap_P[1] & (1 << (57 - 32))) != 0;
- }
-
- static int aesni_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
- const uint8_t *iv, int enc) {
- int ret, mode;
- EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
-
- mode = ctx->cipher->flags & EVP_CIPH_MODE_MASK;
- if ((mode == EVP_CIPH_ECB_MODE || mode == EVP_CIPH_CBC_MODE) && !enc) {
- ret = aesni_set_decrypt_key(key, ctx->key_len * 8, ctx->cipher_data);
- dat->block = (block128_f)aesni_decrypt;
- dat->stream.cbc =
- mode == EVP_CIPH_CBC_MODE ? (cbc128_f)aesni_cbc_encrypt : NULL;
- } else {
- ret = aesni_set_encrypt_key(key, ctx->key_len * 8, ctx->cipher_data);
- dat->block = (block128_f)aesni_encrypt;
- if (mode == EVP_CIPH_CBC_MODE) {
- dat->stream.cbc = (cbc128_f)aesni_cbc_encrypt;
- } else if (mode == EVP_CIPH_CTR_MODE) {
- dat->stream.ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
- } else {
- dat->stream.cbc = NULL;
- }
- }
-
- if (ret < 0) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_AES_KEY_SETUP_FAILED);
- return 0;
- }
-
- return 1;
- }
-
- static int aesni_cbc_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
- const uint8_t *in, size_t len) {
- aesni_cbc_encrypt(in, out, len, ctx->cipher_data, ctx->iv, ctx->encrypt);
-
- return 1;
- }
-
- static int aesni_ecb_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
- const uint8_t *in, size_t len) {
- size_t bl = ctx->cipher->block_size;
-
- if (len < bl) {
- return 1;
- }
-
- aesni_ecb_encrypt(in, out, len, ctx->cipher_data, ctx->encrypt);
-
- return 1;
- }
-
- static int aesni_gcm_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
- const uint8_t *iv, int enc) {
- EVP_AES_GCM_CTX *gctx = ctx->cipher_data;
- if (!iv && !key) {
- return 1;
- }
- if (key) {
- aesni_set_encrypt_key(key, ctx->key_len * 8, &gctx->ks.ks);
- CRYPTO_gcm128_init(&gctx->gcm, &gctx->ks, (block128_f)aesni_encrypt);
- gctx->ctr = (ctr128_f)aesni_ctr32_encrypt_blocks;
- /* 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 const EVP_CIPHER aesni_128_cbc = {
- NID_aes_128_cbc, 16 /* block_size */, 16 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_CBC_MODE,
- NULL /* app_data */, aesni_init_key, aesni_cbc_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aesni_128_ctr = {
- NID_aes_128_ctr, 1 /* block_size */, 16 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_CTR_MODE,
- NULL /* app_data */, aesni_init_key, aes_ctr_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aesni_128_ecb = {
- NID_aes_128_ecb, 16 /* block_size */, 16 /* key_size */,
- 0 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_ECB_MODE,
- NULL /* app_data */, aesni_init_key, aesni_ecb_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aesni_128_ofb = {
- NID_aes_128_ofb128, 1 /* block_size */, 16 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_OFB_MODE,
- NULL /* app_data */, aesni_init_key, aes_ofb_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aesni_128_gcm = {
- NID_aes_128_gcm, 1 /* block_size */, 16 /* key_size */, 12 /* iv_len */,
- sizeof(EVP_AES_GCM_CTX),
- EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER |
- EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT |
- EVP_CIPH_FLAG_AEAD_CIPHER,
- NULL /* app_data */, aesni_gcm_init_key, aes_gcm_cipher, aes_gcm_cleanup,
- aes_gcm_ctrl};
-
-
- static const EVP_CIPHER aesni_192_cbc = {
- NID_aes_192_cbc, 16 /* block_size */, 24 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_CBC_MODE,
- NULL /* app_data */, aesni_init_key, aesni_cbc_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aesni_192_ctr = {
- NID_aes_192_ctr, 1 /* block_size */, 24 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_CTR_MODE,
- NULL /* app_data */, aesni_init_key, aes_ctr_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aesni_192_ecb = {
- NID_aes_192_ecb, 16 /* block_size */, 24 /* key_size */,
- 0 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_ECB_MODE,
- NULL /* app_data */, aesni_init_key, aesni_ecb_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aesni_192_gcm = {
- NID_aes_192_gcm, 1 /* block_size */, 24 /* key_size */, 12 /* iv_len */,
- sizeof(EVP_AES_GCM_CTX),
- EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER |
- EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT |
- EVP_CIPH_FLAG_AEAD_CIPHER,
- NULL /* app_data */, aesni_gcm_init_key, aes_gcm_cipher, aes_gcm_cleanup,
- aes_gcm_ctrl};
-
-
- static const EVP_CIPHER aesni_256_cbc = {
- NID_aes_256_cbc, 16 /* block_size */, 32 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_CBC_MODE,
- NULL /* app_data */, aesni_init_key, aesni_cbc_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aesni_256_ctr = {
- NID_aes_256_ctr, 1 /* block_size */, 32 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_CTR_MODE,
- NULL /* app_data */, aesni_init_key, aes_ctr_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aesni_256_ecb = {
- NID_aes_256_ecb, 16 /* block_size */, 32 /* key_size */,
- 0 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_ECB_MODE,
- NULL /* app_data */, aesni_init_key, aesni_ecb_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aesni_256_ofb = {
- NID_aes_256_ofb128, 1 /* block_size */, 32 /* key_size */,
- 16 /* iv_len */, sizeof(EVP_AES_KEY), EVP_CIPH_OFB_MODE,
- NULL /* app_data */, aesni_init_key, aes_ofb_cipher,
- NULL /* cleanup */, NULL /* ctrl */};
-
- static const EVP_CIPHER aesni_256_gcm = {
- NID_aes_256_gcm, 1 /* block_size */, 32 /* key_size */, 12 /* iv_len */,
- sizeof(EVP_AES_GCM_CTX),
- EVP_CIPH_GCM_MODE | EVP_CIPH_CUSTOM_IV | EVP_CIPH_FLAG_CUSTOM_CIPHER |
- EVP_CIPH_ALWAYS_CALL_INIT | EVP_CIPH_CTRL_INIT | EVP_CIPH_CUSTOM_COPY |
- EVP_CIPH_FLAG_AEAD_CIPHER,
- NULL /* app_data */, aesni_gcm_init_key, aes_gcm_cipher, aes_gcm_cleanup,
- aes_gcm_ctrl};
-
- #define EVP_CIPHER_FUNCTION(keybits, mode) \
- const EVP_CIPHER *EVP_aes_##keybits##_##mode(void) { \
- if (aesni_capable()) { \
- return &aesni_##keybits##_##mode; \
- } else { \
- return &aes_##keybits##_##mode; \
- } \
- }
-
- #else /* ^^^ OPENSSL_X86_64 || OPENSSL_X86 */
-
- static char aesni_capable(void) {
- return 0;
- }
-
- #define EVP_CIPHER_FUNCTION(keybits, mode) \
- const EVP_CIPHER *EVP_aes_##keybits##_##mode(void) { \
- return &aes_##keybits##_##mode; \
- }
-
- #endif
-
- EVP_CIPHER_FUNCTION(128, cbc)
- EVP_CIPHER_FUNCTION(128, ctr)
- EVP_CIPHER_FUNCTION(128, ecb)
- EVP_CIPHER_FUNCTION(128, ofb)
- EVP_CIPHER_FUNCTION(128, gcm)
-
- EVP_CIPHER_FUNCTION(192, cbc)
- EVP_CIPHER_FUNCTION(192, ctr)
- EVP_CIPHER_FUNCTION(192, ecb)
- EVP_CIPHER_FUNCTION(192, gcm)
-
- EVP_CIPHER_FUNCTION(256, cbc)
- EVP_CIPHER_FUNCTION(256, ctr)
- EVP_CIPHER_FUNCTION(256, ecb)
- EVP_CIPHER_FUNCTION(256, ofb)
- EVP_CIPHER_FUNCTION(256, gcm)
-
-
- #define EVP_AEAD_AES_GCM_TAG_LEN 16
-
- struct aead_aes_gcm_ctx {
- union {
- double align;
- AES_KEY ks;
- } ks;
- GCM128_CONTEXT gcm;
- ctr128_f ctr;
- uint8_t tag_len;
- };
-
- static int aead_aes_gcm_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
- size_t key_len, size_t tag_len) {
- struct aead_aes_gcm_ctx *gcm_ctx;
- const size_t key_bits = key_len * 8;
-
- if (key_bits != 128 && key_bits != 256) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
- return 0; /* EVP_AEAD_CTX_init should catch this. */
- }
-
- if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) {
- tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
- }
-
- if (tag_len > EVP_AEAD_AES_GCM_TAG_LEN) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TAG_TOO_LARGE);
- return 0;
- }
-
- gcm_ctx = OPENSSL_malloc(sizeof(struct aead_aes_gcm_ctx));
- if (gcm_ctx == NULL) {
- return 0;
- }
-
- gcm_ctx->ctr =
- aes_ctr_set_key(&gcm_ctx->ks.ks, &gcm_ctx->gcm, NULL, key, key_len);
- gcm_ctx->tag_len = tag_len;
- ctx->aead_state = gcm_ctx;
-
- return 1;
- }
-
- static void aead_aes_gcm_cleanup(EVP_AEAD_CTX *ctx) {
- struct aead_aes_gcm_ctx *gcm_ctx = ctx->aead_state;
- OPENSSL_cleanse(gcm_ctx, sizeof(struct aead_aes_gcm_ctx));
- OPENSSL_free(gcm_ctx);
- }
-
- static int aead_aes_gcm_seal(const EVP_AEAD_CTX *ctx, uint8_t *out,
- size_t *out_len, size_t max_out_len,
- const uint8_t *nonce, size_t nonce_len,
- const uint8_t *in, size_t in_len,
- const uint8_t *ad, size_t ad_len) {
- size_t bulk = 0;
- const struct aead_aes_gcm_ctx *gcm_ctx = ctx->aead_state;
- GCM128_CONTEXT gcm;
-
- if (in_len + gcm_ctx->tag_len < in_len) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
- return 0;
- }
-
- if (max_out_len < in_len + gcm_ctx->tag_len) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
- return 0;
- }
-
- memcpy(&gcm, &gcm_ctx->gcm, sizeof(gcm));
- CRYPTO_gcm128_setiv(&gcm, nonce, nonce_len);
-
- if (ad_len > 0 && !CRYPTO_gcm128_aad(&gcm, ad, ad_len)) {
- return 0;
- }
-
- if (gcm_ctx->ctr) {
- if (!CRYPTO_gcm128_encrypt_ctr32(&gcm, in + bulk, out + bulk, in_len - bulk,
- gcm_ctx->ctr)) {
- return 0;
- }
- } else {
- if (!CRYPTO_gcm128_encrypt(&gcm, in + bulk, out + bulk, in_len - bulk)) {
- return 0;
- }
- }
-
- CRYPTO_gcm128_tag(&gcm, out + in_len, gcm_ctx->tag_len);
- *out_len = in_len + gcm_ctx->tag_len;
- return 1;
- }
-
- static int aead_aes_gcm_open(const EVP_AEAD_CTX *ctx, uint8_t *out,
- size_t *out_len, size_t max_out_len,
- const uint8_t *nonce, size_t nonce_len,
- const uint8_t *in, size_t in_len,
- const uint8_t *ad, size_t ad_len) {
- size_t bulk = 0;
- const struct aead_aes_gcm_ctx *gcm_ctx = ctx->aead_state;
- uint8_t tag[EVP_AEAD_AES_GCM_TAG_LEN];
- size_t plaintext_len;
- GCM128_CONTEXT gcm;
-
- if (in_len < gcm_ctx->tag_len) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
- return 0;
- }
-
- plaintext_len = in_len - gcm_ctx->tag_len;
-
- if (max_out_len < plaintext_len) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
- return 0;
- }
-
- memcpy(&gcm, &gcm_ctx->gcm, sizeof(gcm));
- CRYPTO_gcm128_setiv(&gcm, nonce, nonce_len);
-
- if (!CRYPTO_gcm128_aad(&gcm, ad, ad_len)) {
- return 0;
- }
-
- if (gcm_ctx->ctr) {
- if (!CRYPTO_gcm128_decrypt_ctr32(&gcm, in + bulk, out + bulk,
- in_len - bulk - gcm_ctx->tag_len,
- gcm_ctx->ctr)) {
- return 0;
- }
- } else {
- if (!CRYPTO_gcm128_decrypt(&gcm, in + bulk, out + bulk,
- in_len - bulk - gcm_ctx->tag_len)) {
- return 0;
- }
- }
-
- CRYPTO_gcm128_tag(&gcm, tag, gcm_ctx->tag_len);
- if (CRYPTO_memcmp(tag, in + plaintext_len, gcm_ctx->tag_len) != 0) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
- return 0;
- }
-
- *out_len = plaintext_len;
- return 1;
- }
-
- static const EVP_AEAD aead_aes_128_gcm = {
- 16, /* key len */
- 12, /* nonce len */
- EVP_AEAD_AES_GCM_TAG_LEN, /* overhead */
- EVP_AEAD_AES_GCM_TAG_LEN, /* max tag length */
- aead_aes_gcm_init,
- NULL, /* init_with_direction */
- aead_aes_gcm_cleanup,
- aead_aes_gcm_seal,
- aead_aes_gcm_open,
- NULL, /* get_rc4_state */
- };
-
- static const EVP_AEAD aead_aes_256_gcm = {
- 32, /* key len */
- 12, /* nonce len */
- EVP_AEAD_AES_GCM_TAG_LEN, /* overhead */
- EVP_AEAD_AES_GCM_TAG_LEN, /* max tag length */
- aead_aes_gcm_init,
- NULL, /* init_with_direction */
- aead_aes_gcm_cleanup,
- aead_aes_gcm_seal,
- aead_aes_gcm_open,
- NULL, /* get_rc4_state */
- };
-
- const EVP_AEAD *EVP_aead_aes_128_gcm(void) { return &aead_aes_128_gcm; }
-
- const EVP_AEAD *EVP_aead_aes_256_gcm(void) { return &aead_aes_256_gcm; }
-
-
- /* AES Key Wrap is specified in
- * http://csrc.nist.gov/groups/ST/toolkit/documents/kms/key-wrap.pdf
- * or https://tools.ietf.org/html/rfc3394 */
-
- struct aead_aes_key_wrap_ctx {
- uint8_t key[32];
- unsigned key_bits;
- };
-
- static int aead_aes_key_wrap_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
- size_t key_len, size_t tag_len) {
- struct aead_aes_key_wrap_ctx *kw_ctx;
- const size_t key_bits = key_len * 8;
-
- if (key_bits != 128 && key_bits != 256) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
- return 0; /* EVP_AEAD_CTX_init should catch this. */
- }
-
- if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) {
- tag_len = 8;
- }
-
- if (tag_len != 8) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_TAG_SIZE);
- return 0;
- }
-
- kw_ctx = OPENSSL_malloc(sizeof(struct aead_aes_key_wrap_ctx));
- if (kw_ctx == NULL) {
- OPENSSL_PUT_ERROR(CIPHER, ERR_R_MALLOC_FAILURE);
- return 0;
- }
-
- memcpy(kw_ctx->key, key, key_len);
- kw_ctx->key_bits = key_bits;
-
- ctx->aead_state = kw_ctx;
- return 1;
- }
-
- static void aead_aes_key_wrap_cleanup(EVP_AEAD_CTX *ctx) {
- struct aead_aes_key_wrap_ctx *kw_ctx = ctx->aead_state;
- OPENSSL_cleanse(kw_ctx, sizeof(struct aead_aes_key_wrap_ctx));
- OPENSSL_free(kw_ctx);
- }
-
- /* kDefaultAESKeyWrapNonce is the default nonce value given in 2.2.3.1. */
- static const uint8_t kDefaultAESKeyWrapNonce[8] = {0xa6, 0xa6, 0xa6, 0xa6,
- 0xa6, 0xa6, 0xa6, 0xa6};
-
-
- static int aead_aes_key_wrap_seal(const EVP_AEAD_CTX *ctx, uint8_t *out,
- size_t *out_len, size_t max_out_len,
- const uint8_t *nonce, size_t nonce_len,
- const uint8_t *in, size_t in_len,
- const uint8_t *ad, size_t ad_len) {
- const struct aead_aes_key_wrap_ctx *kw_ctx = ctx->aead_state;
- union {
- double align;
- AES_KEY ks;
- } ks;
- /* Variables in this function match up with the variables in the second half
- * of section 2.2.1. */
- unsigned i, j, n;
- uint8_t A[AES_BLOCK_SIZE];
-
- if (ad_len != 0) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_AD_SIZE);
- return 0;
- }
-
- if (nonce_len == 0) {
- nonce = kDefaultAESKeyWrapNonce;
- nonce_len = sizeof(kDefaultAESKeyWrapNonce);
- }
-
- if (nonce_len != 8) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
- return 0;
- }
-
- if (in_len % 8 != 0) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_INPUT_SIZE);
- return 0;
- }
-
- /* The code below only handles a 32-bit |t| thus 6*|n| must be less than
- * 2^32, where |n| is |in_len| / 8. So in_len < 4/3 * 2^32 and we
- * conservatively cap it to 2^32-16 to stop 32-bit platforms complaining that
- * a comparison is always true. */
- if (in_len > 0xfffffff0) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
- return 0;
- }
-
- n = in_len / 8;
-
- if (n < 2) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_INPUT_SIZE);
- return 0;
- }
-
- if (in_len + 8 < in_len) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
- return 0;
- }
-
- if (max_out_len < in_len + 8) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
- return 0;
- }
-
- if (AES_set_encrypt_key(kw_ctx->key, kw_ctx->key_bits, &ks.ks) < 0) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_AES_KEY_SETUP_FAILED);
- return 0;
- }
-
- memmove(out + 8, in, in_len);
- memcpy(A, nonce, 8);
-
- for (j = 0; j < 6; j++) {
- for (i = 1; i <= n; i++) {
- uint32_t t;
-
- memcpy(A + 8, out + 8 * i, 8);
- AES_encrypt(A, A, &ks.ks);
- t = n * j + i;
- A[7] ^= t & 0xff;
- A[6] ^= (t >> 8) & 0xff;
- A[5] ^= (t >> 16) & 0xff;
- A[4] ^= (t >> 24) & 0xff;
- memcpy(out + 8 * i, A + 8, 8);
- }
- }
-
- memcpy(out, A, 8);
- *out_len = in_len + 8;
- return 1;
- }
-
- static int aead_aes_key_wrap_open(const EVP_AEAD_CTX *ctx, uint8_t *out,
- size_t *out_len, size_t max_out_len,
- const uint8_t *nonce, size_t nonce_len,
- const uint8_t *in, size_t in_len,
- const uint8_t *ad, size_t ad_len) {
- const struct aead_aes_key_wrap_ctx *kw_ctx = ctx->aead_state;
- union {
- double align;
- AES_KEY ks;
- } ks;
- /* Variables in this function match up with the variables in the second half
- * of section 2.2.1. */
- unsigned i, j, n;
- uint8_t A[AES_BLOCK_SIZE];
-
- if (ad_len != 0) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_AD_SIZE);
- return 0;
- }
-
- if (nonce_len == 0) {
- nonce = kDefaultAESKeyWrapNonce;
- nonce_len = sizeof(kDefaultAESKeyWrapNonce);
- }
-
- if (nonce_len != 8) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
- return 0;
- }
-
- if (in_len % 8 != 0) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_INPUT_SIZE);
- return 0;
- }
-
- /* The code below only handles a 32-bit |t| thus 6*|n| must be less than
- * 2^32, where |n| is |in_len| / 8. So in_len < 4/3 * 2^32 and we
- * conservatively cap it to 2^32-8 to stop 32-bit platforms complaining that
- * a comparison is always true. */
- if (in_len > 0xfffffff8) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
- return 0;
- }
-
- if (in_len < 24) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
- return 0;
- }
-
- n = (in_len / 8) - 1;
-
- if (max_out_len < in_len - 8) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
- return 0;
- }
-
- if (AES_set_decrypt_key(kw_ctx->key, kw_ctx->key_bits, &ks.ks) < 0) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_AES_KEY_SETUP_FAILED);
- return 0;
- }
-
- memcpy(A, in, 8);
- memmove(out, in + 8, in_len - 8);
-
- for (j = 5; j < 6; j--) {
- for (i = n; i > 0; i--) {
- uint32_t t;
-
- t = n * j + i;
- A[7] ^= t & 0xff;
- A[6] ^= (t >> 8) & 0xff;
- A[5] ^= (t >> 16) & 0xff;
- A[4] ^= (t >> 24) & 0xff;
- memcpy(A + 8, out + 8 * (i - 1), 8);
- AES_decrypt(A, A, &ks.ks);
- memcpy(out + 8 * (i - 1), A + 8, 8);
- }
- }
-
- if (CRYPTO_memcmp(A, nonce, 8) != 0) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
- return 0;
- }
-
- *out_len = in_len - 8;
- return 1;
- }
-
- static const EVP_AEAD aead_aes_128_key_wrap = {
- 16, /* key len */
- 8, /* nonce len */
- 8, /* overhead */
- 8, /* max tag length */
- aead_aes_key_wrap_init,
- NULL, /* init_with_direction */
- aead_aes_key_wrap_cleanup,
- aead_aes_key_wrap_seal,
- aead_aes_key_wrap_open,
- NULL, /* get_rc4_state */
- };
-
- static const EVP_AEAD aead_aes_256_key_wrap = {
- 32, /* key len */
- 8, /* nonce len */
- 8, /* overhead */
- 8, /* max tag length */
- aead_aes_key_wrap_init,
- NULL, /* init_with_direction */
- aead_aes_key_wrap_cleanup,
- aead_aes_key_wrap_seal,
- aead_aes_key_wrap_open,
- NULL, /* get_rc4_state */
- };
-
- const EVP_AEAD *EVP_aead_aes_128_key_wrap(void) { return &aead_aes_128_key_wrap; }
-
- const EVP_AEAD *EVP_aead_aes_256_key_wrap(void) { return &aead_aes_256_key_wrap; }
-
-
- #define EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN SHA256_DIGEST_LENGTH
- #define EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN 12
-
- struct aead_aes_ctr_hmac_sha256_ctx {
- union {
- double align;
- AES_KEY ks;
- } ks;
- ctr128_f ctr;
- block128_f block;
- SHA256_CTX inner_init_state;
- SHA256_CTX outer_init_state;
- uint8_t tag_len;
- };
-
- static void hmac_init(SHA256_CTX *out_inner, SHA256_CTX *out_outer,
- const uint8_t hmac_key[32]) {
- static const size_t hmac_key_len = 32;
- uint8_t block[SHA256_CBLOCK];
- memcpy(block, hmac_key, hmac_key_len);
- memset(block + hmac_key_len, 0x36, sizeof(block) - hmac_key_len);
-
- unsigned i;
- for (i = 0; i < hmac_key_len; i++) {
- block[i] ^= 0x36;
- }
-
- SHA256_Init(out_inner);
- SHA256_Update(out_inner, block, sizeof(block));
-
- memset(block + hmac_key_len, 0x5c, sizeof(block) - hmac_key_len);
- for (i = 0; i < hmac_key_len; i++) {
- block[i] ^= (0x36 ^ 0x5c);
- }
-
- SHA256_Init(out_outer);
- SHA256_Update(out_outer, block, sizeof(block));
- }
-
- static int aead_aes_ctr_hmac_sha256_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
- size_t key_len, size_t tag_len) {
- struct aead_aes_ctr_hmac_sha256_ctx *aes_ctx;
- static const size_t hmac_key_len = 32;
-
- if (key_len < hmac_key_len) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
- return 0; /* EVP_AEAD_CTX_init should catch this. */
- }
-
- const size_t aes_key_len = key_len - hmac_key_len;
- if (aes_key_len != 16 && aes_key_len != 32) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_KEY_LENGTH);
- return 0; /* EVP_AEAD_CTX_init should catch this. */
- }
-
- if (tag_len == EVP_AEAD_DEFAULT_TAG_LENGTH) {
- tag_len = EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN;
- }
-
- if (tag_len > EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TAG_TOO_LARGE);
- return 0;
- }
-
- aes_ctx = OPENSSL_malloc(sizeof(struct aead_aes_ctr_hmac_sha256_ctx));
- if (aes_ctx == NULL) {
- OPENSSL_PUT_ERROR(CIPHER, ERR_R_MALLOC_FAILURE);
- return 0;
- }
-
- aes_ctx->ctr =
- aes_ctr_set_key(&aes_ctx->ks.ks, NULL, &aes_ctx->block, key, aes_key_len);
- aes_ctx->tag_len = tag_len;
- hmac_init(&aes_ctx->inner_init_state, &aes_ctx->outer_init_state,
- key + aes_key_len);
-
- ctx->aead_state = aes_ctx;
-
- return 1;
- }
-
- static void aead_aes_ctr_hmac_sha256_cleanup(EVP_AEAD_CTX *ctx) {
- struct aead_aes_ctr_hmac_sha256_ctx *aes_ctx = ctx->aead_state;
- OPENSSL_cleanse(aes_ctx, sizeof(struct aead_aes_ctr_hmac_sha256_ctx));
- OPENSSL_free(aes_ctx);
- }
-
- static void hmac_update_uint64(SHA256_CTX *sha256, uint64_t value) {
- unsigned i;
- uint8_t bytes[8];
-
- for (i = 0; i < sizeof(bytes); i++) {
- bytes[i] = value & 0xff;
- value >>= 8;
- }
- SHA256_Update(sha256, bytes, sizeof(bytes));
- }
-
- static void hmac_calculate(uint8_t out[SHA256_DIGEST_LENGTH],
- const SHA256_CTX *inner_init_state,
- const SHA256_CTX *outer_init_state,
- const uint8_t *ad, size_t ad_len,
- const uint8_t *nonce, const uint8_t *ciphertext,
- size_t ciphertext_len) {
- SHA256_CTX sha256;
- memcpy(&sha256, inner_init_state, sizeof(sha256));
- hmac_update_uint64(&sha256, ad_len);
- hmac_update_uint64(&sha256, ciphertext_len);
- SHA256_Update(&sha256, nonce, EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN);
- SHA256_Update(&sha256, ad, ad_len);
-
- /* Pad with zeros to the end of the SHA-256 block. */
- const unsigned num_padding =
- (SHA256_CBLOCK - ((sizeof(uint64_t)*2 +
- EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN + ad_len) %
- SHA256_CBLOCK)) %
- SHA256_CBLOCK;
- uint8_t padding[SHA256_CBLOCK];
- memset(padding, 0, num_padding);
- SHA256_Update(&sha256, padding, num_padding);
-
- SHA256_Update(&sha256, ciphertext, ciphertext_len);
-
- uint8_t inner_digest[SHA256_DIGEST_LENGTH];
- SHA256_Final(inner_digest, &sha256);
-
- memcpy(&sha256, outer_init_state, sizeof(sha256));
- SHA256_Update(&sha256, inner_digest, sizeof(inner_digest));
- SHA256_Final(out, &sha256);
- }
-
- static void aead_aes_ctr_hmac_sha256_crypt(
- const struct aead_aes_ctr_hmac_sha256_ctx *aes_ctx, uint8_t *out,
- const uint8_t *in, size_t len, const uint8_t *nonce) {
- /* Since the AEAD operation is one-shot, keeping a buffer of unused keystream
- * bytes is pointless. However, |CRYPTO_ctr128_encrypt| requires it. */
- uint8_t partial_block_buffer[AES_BLOCK_SIZE];
- unsigned partial_block_offset = 0;
- memset(partial_block_buffer, 0, sizeof(partial_block_buffer));
-
- uint8_t counter[AES_BLOCK_SIZE];
- memcpy(counter, nonce, EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN);
- memset(counter + EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN, 0, 4);
-
- if (aes_ctx->ctr) {
- CRYPTO_ctr128_encrypt_ctr32(in, out, len, &aes_ctx->ks.ks, counter,
- partial_block_buffer, &partial_block_offset,
- aes_ctx->ctr);
- } else {
- CRYPTO_ctr128_encrypt(in, out, len, &aes_ctx->ks.ks, counter,
- partial_block_buffer, &partial_block_offset,
- aes_ctx->block);
- }
- }
-
- static int aead_aes_ctr_hmac_sha256_seal(const EVP_AEAD_CTX *ctx, uint8_t *out,
- size_t *out_len, size_t max_out_len,
- const uint8_t *nonce, size_t nonce_len,
- const uint8_t *in, size_t in_len,
- const uint8_t *ad, size_t ad_len) {
- const struct aead_aes_ctr_hmac_sha256_ctx *aes_ctx = ctx->aead_state;
- const uint64_t in_len_64 = in_len;
-
- if (in_len + aes_ctx->tag_len < in_len ||
- /* This input is so large it would overflow the 32-bit block counter. */
- in_len_64 >= (OPENSSL_U64(1) << 32) * AES_BLOCK_SIZE) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
- return 0;
- }
-
- if (max_out_len < in_len + aes_ctx->tag_len) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
- return 0;
- }
-
- if (nonce_len != EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
- return 0;
- }
-
- aead_aes_ctr_hmac_sha256_crypt(aes_ctx, out, in, in_len, nonce);
-
- uint8_t hmac_result[SHA256_DIGEST_LENGTH];
- hmac_calculate(hmac_result, &aes_ctx->inner_init_state,
- &aes_ctx->outer_init_state, ad, ad_len, nonce, out, in_len);
- memcpy(out + in_len, hmac_result, aes_ctx->tag_len);
- *out_len = in_len + aes_ctx->tag_len;
-
- return 1;
- }
-
- static int aead_aes_ctr_hmac_sha256_open(const EVP_AEAD_CTX *ctx, uint8_t *out,
- size_t *out_len, size_t max_out_len,
- const uint8_t *nonce, size_t nonce_len,
- const uint8_t *in, size_t in_len,
- const uint8_t *ad, size_t ad_len) {
- const struct aead_aes_ctr_hmac_sha256_ctx *aes_ctx = ctx->aead_state;
- size_t plaintext_len;
-
- if (in_len < aes_ctx->tag_len) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
- return 0;
- }
-
- plaintext_len = in_len - aes_ctx->tag_len;
-
- if (max_out_len < plaintext_len) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
- return 0;
- }
-
- if (nonce_len != EVP_AEAD_AES_CTR_HMAC_SHA256_NONCE_LEN) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
- return 0;
- }
-
- uint8_t hmac_result[SHA256_DIGEST_LENGTH];
- hmac_calculate(hmac_result, &aes_ctx->inner_init_state,
- &aes_ctx->outer_init_state, ad, ad_len, nonce, in,
- plaintext_len);
- if (CRYPTO_memcmp(hmac_result, in + plaintext_len, aes_ctx->tag_len) != 0) {
- OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
- return 0;
- }
-
- aead_aes_ctr_hmac_sha256_crypt(aes_ctx, out, in, plaintext_len, nonce);
-
- *out_len = plaintext_len;
- return 1;
- }
-
- static const EVP_AEAD aead_aes_128_ctr_hmac_sha256 = {
- 16 /* AES key */ + 32 /* HMAC key */,
- 12, /* nonce length */
- EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN, /* overhead */
- EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN, /* max tag length */
-
- aead_aes_ctr_hmac_sha256_init,
- NULL /* init_with_direction */,
- aead_aes_ctr_hmac_sha256_cleanup,
- aead_aes_ctr_hmac_sha256_seal,
- aead_aes_ctr_hmac_sha256_open,
- NULL /* get_rc4_state */,
- };
-
- static const EVP_AEAD aead_aes_256_ctr_hmac_sha256 = {
- 32 /* AES key */ + 32 /* HMAC key */,
- 12, /* nonce length */
- EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN, /* overhead */
- EVP_AEAD_AES_CTR_HMAC_SHA256_TAG_LEN, /* max tag length */
-
- aead_aes_ctr_hmac_sha256_init,
- NULL /* init_with_direction */,
- aead_aes_ctr_hmac_sha256_cleanup,
- aead_aes_ctr_hmac_sha256_seal,
- aead_aes_ctr_hmac_sha256_open,
- NULL /* get_rc4_state */,
- };
-
- const EVP_AEAD *EVP_aead_aes_128_ctr_hmac_sha256(void) {
- return &aead_aes_128_ctr_hmac_sha256;
- }
-
- const EVP_AEAD *EVP_aead_aes_256_ctr_hmac_sha256(void) {
- return &aead_aes_256_ctr_hmac_sha256;
- }
-
- int EVP_has_aes_hardware(void) {
- #if defined(OPENSSL_X86) || defined(OPENSSL_X86_64)
- return aesni_capable() && crypto_gcm_clmul_enabled();
- #elif defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
- return hwaes_capable() && (OPENSSL_armcap_P & ARMV8_PMULL);
- #else
- return 0;
- #endif
- }
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