--- /dev/null
+/* ====================================================================
+ * 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/nid.h>
+#include <openssl/rand.h>
+
+#include "internal.h"
+#include "../../internal.h"
+#include "../aes/internal.h"
+#include "../modes/internal.h"
+#include "../delocate.h"
+
+#if defined(OPENSSL_ARM) || defined(OPENSSL_AARCH64)
+#include <openssl/arm_arch.h>
+#endif
+
+
+OPENSSL_MSVC_PRAGMA(warning(disable: 4702)) // Unreachable code.
+
+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
+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))
+
+#if defined(OPENSSL_ARM) && __ARM_MAX_ARCH__ >= 7
+#define BSAES
+static char bsaes_capable(void) {
+ return CRYPTO_is_NEON_capable();
+}
+#endif
+
+#endif
+
+
+#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.
+static 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();
+}
+
+static 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.
+static int vpaes_set_encrypt_key(const uint8_t *userKey, int bits,
+ AES_KEY *key) {
+ abort();
+}
+static int vpaes_set_decrypt_key(const uint8_t *userKey, int bits,
+ AES_KEY *key) {
+ abort();
+}
+static void vpaes_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
+ abort();
+}
+static void vpaes_decrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
+ abort();
+}
+static 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(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);
+
+#else
+
+// On other platforms, aesni_capable() will always return false and so the
+// following will never be called.
+static void aesni_encrypt(const uint8_t *in, uint8_t *out, const AES_KEY *key) {
+ abort();
+}
+static int aesni_set_encrypt_key(const uint8_t *userKey, int bits,
+ AES_KEY *key) {
+ abort();
+}
+static 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) {
+ 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_hw_set_decrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+ dat->block = (block128_f)aes_hw_decrypt;
+ dat->stream.cbc = NULL;
+ if (mode == EVP_CIPH_CBC_MODE) {
+ dat->stream.cbc = (cbc128_f)aes_hw_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_hw_set_encrypt_key(key, ctx->key_len * 8, &dat->ks.ks);
+ dat->block = (block128_f)aes_hw_encrypt;
+ dat->stream.cbc = NULL;
+ if (mode == EVP_CIPH_CBC_MODE) {
+ dat->stream.cbc = (cbc128_f)aes_hw_cbc_encrypt;
+ } else if (mode == EVP_CIPH_CTR_MODE) {
+ dat->stream.ctr = (ctr128_f)aes_hw_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;
+ EVP_AES_KEY *dat = (EVP_AES_KEY *)ctx->cipher_data;
+
+ if (len < bl) {
+ return 1;
+ }
+
+ len -= bl;
+ for (size_t i = 0; 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) {
+ 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,
+ &ctx->num, dat->stream.ctr);
+ } else {
+ CRYPTO_ctr128_encrypt(in, out, len, &dat->ks, ctx->iv, ctx->buf, &ctx->num,
+ dat->block);
+ }
+ 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);
+
+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_bytes) {
+ if (aesni_capable()) {
+ aesni_set_encrypt_key(key, key_bytes * 8, aes_key);
+ if (gcm_ctx != NULL) {
+ CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)aesni_encrypt, 1);
+ }
+ if (out_block) {
+ *out_block = (block128_f) aesni_encrypt;
+ }
+ return (ctr128_f)aesni_ctr32_encrypt_blocks;
+ }
+
+ if (hwaes_capable()) {
+ aes_hw_set_encrypt_key(key, key_bytes * 8, aes_key);
+ if (gcm_ctx != NULL) {
+ CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)aes_hw_encrypt, 0);
+ }
+ if (out_block) {
+ *out_block = (block128_f) aes_hw_encrypt;
+ }
+ return (ctr128_f)aes_hw_ctr32_encrypt_blocks;
+ }
+
+ if (bsaes_capable()) {
+ AES_set_encrypt_key(key, key_bytes * 8, aes_key);
+ if (gcm_ctx != NULL) {
+ CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)AES_encrypt, 0);
+ }
+ 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_bytes * 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, 0);
+ }
+ return NULL;
+ }
+
+ AES_set_encrypt_key(key, key_bytes * 8, aes_key);
+ if (gcm_ctx != NULL) {
+ CRYPTO_gcm128_init(gcm_ctx, aes_key, (block128_f)AES_encrypt, 0);
+ }
+ 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, &gctx->ks.ks, 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, &gctx->ks.ks, iv, gctx->ivlen);
+ } else {
+ OPENSSL_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;
+ }
+ OPENSSL_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;
+ }
+ OPENSSL_memcpy(ptr, c->buf, arg);
+ return 1;
+
+ case EVP_CTRL_GCM_SET_IV_FIXED:
+ // Special case: -1 length restores whole IV
+ if (arg == -1) {
+ OPENSSL_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) {
+ OPENSSL_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->ks.ks, gctx->iv, gctx->ivlen);
+ if (arg <= 0 || arg > gctx->ivlen) {
+ arg = gctx->ivlen;
+ }
+ OPENSSL_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;
+ }
+ OPENSSL_memcpy(gctx->iv + gctx->ivlen - arg, ptr, arg);
+ CRYPTO_gcm128_setiv(&gctx->gcm, &gctx->ks.ks, 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->iv == c->iv) {
+ gctx_out->iv = out->iv;
+ } else {
+ gctx_out->iv = OPENSSL_malloc(gctx->ivlen);
+ if (!gctx_out->iv) {
+ return 0;
+ }
+ OPENSSL_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) {
+ if (!CRYPTO_gcm128_encrypt_ctr32(&gctx->gcm, &gctx->ks.ks, in, out, len,
+ gctx->ctr)) {
+ return -1;
+ }
+ } else {
+ if (!CRYPTO_gcm128_encrypt(&gctx->gcm, &gctx->ks.ks, in, out, len)) {
+ return -1;
+ }
+ }
+ } else {
+ if (gctx->ctr) {
+ if (!CRYPTO_gcm128_decrypt_ctr32(&gctx->gcm, &gctx->ks.ks, in, out, len,
+ gctx->ctr)) {
+ return -1;
+ }
+ } else {
+ if (!CRYPTO_gcm128_decrypt(&gctx->gcm, &gctx->ks.ks, in, out, len)) {
+ return -1;
+ }
+ }
+ }
+ return len;
+ } else {
+ if (!ctx->encrypt) {
+ if (gctx->taglen < 0 ||
+ !CRYPTO_gcm128_finish(&gctx->gcm, ctx->buf, gctx->taglen)) {
+ 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;
+ }
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_cbc_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_128_cbc;
+ out->block_size = 16;
+ out->key_len = 16;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_CBC_MODE;
+ out->init = aes_init_key;
+ out->cipher = aes_cbc_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_ctr_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_128_ctr;
+ out->block_size = 1;
+ out->key_len = 16;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_CTR_MODE;
+ out->init = aes_init_key;
+ out->cipher = aes_ctr_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_ecb_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_128_ecb;
+ out->block_size = 16;
+ out->key_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_ECB_MODE;
+ out->init = aes_init_key;
+ out->cipher = aes_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_ofb_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_128_ofb128;
+ out->block_size = 1;
+ out->key_len = 16;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_OFB_MODE;
+ out->init = aes_init_key;
+ out->cipher = aes_ofb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_128_gcm_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_128_gcm;
+ out->block_size = 1;
+ out->key_len = 16;
+ out->iv_len = 12;
+ out->ctx_size = sizeof(EVP_AES_GCM_CTX);
+ out->flags = 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;
+ out->init = aes_gcm_init_key;
+ out->cipher = aes_gcm_cipher;
+ out->cleanup = aes_gcm_cleanup;
+ out->ctrl = aes_gcm_ctrl;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_cbc_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_192_cbc;
+ out->block_size = 16;
+ out->key_len = 24;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_CBC_MODE;
+ out->init = aes_init_key;
+ out->cipher = aes_cbc_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_ctr_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_192_ctr;
+ out->block_size = 1;
+ out->key_len = 24;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_CTR_MODE;
+ out->init = aes_init_key;
+ out->cipher = aes_ctr_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_ecb_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_192_ecb;
+ out->block_size = 16;
+ out->key_len = 24;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_ECB_MODE;
+ out->init = aes_init_key;
+ out->cipher = aes_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_192_gcm_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_192_gcm;
+ out->block_size = 1;
+ out->key_len = 24;
+ out->iv_len = 12;
+ out->ctx_size = sizeof(EVP_AES_GCM_CTX);
+ out->flags = 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;
+ out->init = aes_gcm_init_key;
+ out->cipher = aes_gcm_cipher;
+ out->cleanup = aes_gcm_cleanup;
+ out->ctrl = aes_gcm_ctrl;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_cbc_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_256_cbc;
+ out->block_size = 16;
+ out->key_len = 32;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_CBC_MODE;
+ out->init = aes_init_key;
+ out->cipher = aes_cbc_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_ctr_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_256_ctr;
+ out->block_size = 1;
+ out->key_len = 32;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_CTR_MODE;
+ out->init = aes_init_key;
+ out->cipher = aes_ctr_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_ecb_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_256_ecb;
+ out->block_size = 16;
+ out->key_len = 32;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_ECB_MODE;
+ out->init = aes_init_key;
+ out->cipher = aes_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_ofb_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_256_ofb128;
+ out->block_size = 1;
+ out->key_len = 32;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_OFB_MODE;
+ out->init = aes_init_key;
+ out->cipher = aes_ofb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aes_256_gcm_generic) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_256_gcm;
+ out->block_size = 1;
+ out->key_len = 32;
+ out->iv_len = 12;
+ out->ctx_size = sizeof(EVP_AES_GCM_CTX);
+ out->flags = 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;
+ out->init = aes_gcm_init_key;
+ out->cipher = aes_gcm_cipher;
+ out->cleanup = aes_gcm_cleanup;
+ out->ctrl = 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, 1);
+ 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, &gctx->ks.ks, 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, &gctx->ks.ks, iv, gctx->ivlen);
+ } else {
+ OPENSSL_memcpy(gctx->iv, iv, gctx->ivlen);
+ }
+ gctx->iv_set = 1;
+ gctx->iv_gen = 0;
+ }
+ return 1;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_128_cbc) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_128_cbc;
+ out->block_size = 16;
+ out->key_len = 16;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_CBC_MODE;
+ out->init = aesni_init_key;
+ out->cipher = aesni_cbc_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_128_ctr) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_128_ctr;
+ out->block_size = 1;
+ out->key_len = 16;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_CTR_MODE;
+ out->init = aesni_init_key;
+ out->cipher = aes_ctr_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_128_ecb) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_128_ecb;
+ out->block_size = 16;
+ out->key_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_ECB_MODE;
+ out->init = aesni_init_key;
+ out->cipher = aesni_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_128_ofb) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_128_ofb128;
+ out->block_size = 1;
+ out->key_len = 16;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_OFB_MODE;
+ out->init = aesni_init_key;
+ out->cipher = aes_ofb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_128_gcm) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_128_gcm;
+ out->block_size = 1;
+ out->key_len = 16;
+ out->iv_len = 12;
+ out->ctx_size = sizeof(EVP_AES_GCM_CTX);
+ out->flags = 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;
+ out->init = aesni_gcm_init_key;
+ out->cipher = aes_gcm_cipher;
+ out->cleanup = aes_gcm_cleanup;
+ out->ctrl = aes_gcm_ctrl;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_192_cbc) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_192_cbc;
+ out->block_size = 16;
+ out->key_len = 24;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_CBC_MODE;
+ out->init = aesni_init_key;
+ out->cipher = aesni_cbc_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_192_ctr) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_192_ctr;
+ out->block_size = 1;
+ out->key_len = 24;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_CTR_MODE;
+ out->init = aesni_init_key;
+ out->cipher = aes_ctr_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_192_ecb) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_192_ecb;
+ out->block_size = 16;
+ out->key_len = 24;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_ECB_MODE;
+ out->init = aesni_init_key;
+ out->cipher = aesni_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_192_gcm) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_192_gcm;
+ out->block_size = 1;
+ out->key_len = 24;
+ out->iv_len = 12;
+ out->ctx_size = sizeof(EVP_AES_GCM_CTX);
+ out->flags = 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;
+ out->init = aesni_gcm_init_key;
+ out->cipher = aes_gcm_cipher;
+ out->cleanup = aes_gcm_cleanup;
+ out->ctrl = aes_gcm_ctrl;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_256_cbc) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_256_cbc;
+ out->block_size = 16;
+ out->key_len = 32;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_CBC_MODE;
+ out->init = aesni_init_key;
+ out->cipher = aesni_cbc_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_256_ctr) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_256_ctr;
+ out->block_size = 1;
+ out->key_len = 32;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_CTR_MODE;
+ out->init = aesni_init_key;
+ out->cipher = aes_ctr_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_256_ecb) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_256_ecb;
+ out->block_size = 16;
+ out->key_len = 32;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_ECB_MODE;
+ out->init = aesni_init_key;
+ out->cipher = aesni_ecb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_256_ofb) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_256_ofb128;
+ out->block_size = 1;
+ out->key_len = 32;
+ out->iv_len = 16;
+ out->ctx_size = sizeof(EVP_AES_KEY);
+ out->flags = EVP_CIPH_OFB_MODE;
+ out->init = aesni_init_key;
+ out->cipher = aes_ofb_cipher;
+}
+
+DEFINE_LOCAL_DATA(EVP_CIPHER, aesni_256_gcm) {
+ memset(out, 0, sizeof(EVP_CIPHER));
+
+ out->nid = NID_aes_256_gcm;
+ out->block_size = 1;
+ out->key_len = 32;
+ out->iv_len = 12;
+ out->ctx_size = sizeof(EVP_AES_GCM_CTX);
+ out->flags = 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;
+ out->init = aesni_gcm_init_key;
+ out->cipher = aes_gcm_cipher;
+ out->cleanup = aes_gcm_cleanup;
+ out->ctrl = 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##_generic(); \
+ } \
+ }
+
+#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##_generic(); \
+ }
+
+#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;
+};
+
+struct aead_aes_gcm_tls12_ctx {
+ struct aead_aes_gcm_ctx gcm_ctx;
+ uint64_t min_next_nonce;
+};
+
+static int aead_aes_gcm_init_impl(struct aead_aes_gcm_ctx *gcm_ctx,
+ size_t *out_tag_len, const uint8_t *key,
+ size_t key_len, size_t tag_len) {
+ 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->ctr =
+ aes_ctr_set_key(&gcm_ctx->ks.ks, &gcm_ctx->gcm, NULL, key, key_len);
+ *out_tag_len = tag_len;
+ return 1;
+}
+
+static int aead_aes_gcm_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+ size_t key_len, size_t requested_tag_len) {
+ struct aead_aes_gcm_ctx *gcm_ctx;
+ gcm_ctx = OPENSSL_malloc(sizeof(struct aead_aes_gcm_ctx));
+ if (gcm_ctx == NULL) {
+ return 0;
+ }
+
+ size_t actual_tag_len;
+ if (!aead_aes_gcm_init_impl(gcm_ctx, &actual_tag_len, key, key_len,
+ requested_tag_len)) {
+ OPENSSL_free(gcm_ctx);
+ return 0;
+ }
+
+ ctx->aead_state = gcm_ctx;
+ ctx->tag_len = actual_tag_len;
+ return 1;
+}
+
+static void aead_aes_gcm_cleanup(EVP_AEAD_CTX *ctx) {
+ OPENSSL_free(ctx->aead_state);
+}
+
+static int aead_aes_gcm_seal_scatter(const EVP_AEAD_CTX *ctx, uint8_t *out,
+ uint8_t *out_tag, size_t *out_tag_len,
+ size_t max_out_tag_len,
+ const uint8_t *nonce, size_t nonce_len,
+ const uint8_t *in, size_t in_len,
+ const uint8_t *extra_in,
+ size_t extra_in_len,
+ const uint8_t *ad, size_t ad_len) {
+ const struct aead_aes_gcm_ctx *gcm_ctx = ctx->aead_state;
+ GCM128_CONTEXT gcm;
+
+ if (extra_in_len + ctx->tag_len < ctx->tag_len) {
+ OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_TOO_LARGE);
+ return 0;
+ }
+ if (max_out_tag_len < extra_in_len + ctx->tag_len) {
+ OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BUFFER_TOO_SMALL);
+ return 0;
+ }
+ if (nonce_len == 0) {
+ OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+ return 0;
+ }
+
+ const AES_KEY *key = &gcm_ctx->ks.ks;
+
+ OPENSSL_memcpy(&gcm, &gcm_ctx->gcm, sizeof(gcm));
+ CRYPTO_gcm128_setiv(&gcm, key, 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, key, in, out, in_len,
+ gcm_ctx->ctr)) {
+ return 0;
+ }
+ } else {
+ if (!CRYPTO_gcm128_encrypt(&gcm, key, in, out, in_len)) {
+ return 0;
+ }
+ }
+
+ if (extra_in_len) {
+ if (gcm_ctx->ctr) {
+ if (!CRYPTO_gcm128_encrypt_ctr32(&gcm, key, extra_in, out_tag,
+ extra_in_len, gcm_ctx->ctr)) {
+ return 0;
+ }
+ } else {
+ if (!CRYPTO_gcm128_encrypt(&gcm, key, extra_in, out_tag, extra_in_len)) {
+ return 0;
+ }
+ }
+ }
+
+ CRYPTO_gcm128_tag(&gcm, out_tag + extra_in_len, ctx->tag_len);
+ *out_tag_len = ctx->tag_len + extra_in_len;
+
+ return 1;
+}
+
+static int aead_aes_gcm_open_gather(const EVP_AEAD_CTX *ctx, uint8_t *out,
+ const uint8_t *nonce, size_t nonce_len,
+ const uint8_t *in, size_t in_len,
+ const uint8_t *in_tag, size_t in_tag_len,
+ const uint8_t *ad, size_t ad_len) {
+ const struct aead_aes_gcm_ctx *gcm_ctx = ctx->aead_state;
+ uint8_t tag[EVP_AEAD_AES_GCM_TAG_LEN];
+ GCM128_CONTEXT gcm;
+
+ if (nonce_len == 0) {
+ OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE_SIZE);
+ return 0;
+ }
+
+ if (in_tag_len != ctx->tag_len) {
+ OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+ return 0;
+ }
+
+ const AES_KEY *key = &gcm_ctx->ks.ks;
+
+ OPENSSL_memcpy(&gcm, &gcm_ctx->gcm, sizeof(gcm));
+ CRYPTO_gcm128_setiv(&gcm, key, nonce, nonce_len);
+
+ if (!CRYPTO_gcm128_aad(&gcm, ad, ad_len)) {
+ return 0;
+ }
+
+ if (gcm_ctx->ctr) {
+ if (!CRYPTO_gcm128_decrypt_ctr32(&gcm, key, in, out, in_len,
+ gcm_ctx->ctr)) {
+ return 0;
+ }
+ } else {
+ if (!CRYPTO_gcm128_decrypt(&gcm, key, in, out, in_len)) {
+ return 0;
+ }
+ }
+
+ CRYPTO_gcm128_tag(&gcm, tag, ctx->tag_len);
+ if (CRYPTO_memcmp(tag, in_tag, ctx->tag_len) != 0) {
+ OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_BAD_DECRYPT);
+ return 0;
+ }
+
+ return 1;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_128_gcm) {
+ memset(out, 0, sizeof(EVP_AEAD));
+
+ out->key_len = 16;
+ out->nonce_len = 12;
+ out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+ out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+ out->seal_scatter_supports_extra_in = 1;
+
+ out->init = aead_aes_gcm_init;
+ out->cleanup = aead_aes_gcm_cleanup;
+ out->seal_scatter = aead_aes_gcm_seal_scatter;
+ out->open_gather = aead_aes_gcm_open_gather;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_256_gcm) {
+ memset(out, 0, sizeof(EVP_AEAD));
+
+ out->key_len = 32;
+ out->nonce_len = 12;
+ out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+ out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+ out->seal_scatter_supports_extra_in = 1;
+
+ out->init = aead_aes_gcm_init;
+ out->cleanup = aead_aes_gcm_cleanup;
+ out->seal_scatter = aead_aes_gcm_seal_scatter;
+ out->open_gather = aead_aes_gcm_open_gather;
+}
+
+static int aead_aes_gcm_tls12_init(EVP_AEAD_CTX *ctx, const uint8_t *key,
+ size_t key_len, size_t requested_tag_len) {
+ struct aead_aes_gcm_tls12_ctx *gcm_ctx;
+ gcm_ctx = OPENSSL_malloc(sizeof(struct aead_aes_gcm_tls12_ctx));
+ if (gcm_ctx == NULL) {
+ return 0;
+ }
+
+ gcm_ctx->min_next_nonce = 0;
+
+ size_t actual_tag_len;
+ if (!aead_aes_gcm_init_impl(&gcm_ctx->gcm_ctx, &actual_tag_len, key, key_len,
+ requested_tag_len)) {
+ OPENSSL_free(gcm_ctx);
+ return 0;
+ }
+
+ ctx->aead_state = gcm_ctx;
+ ctx->tag_len = actual_tag_len;
+ return 1;
+}
+
+static void aead_aes_gcm_tls12_cleanup(EVP_AEAD_CTX *ctx) {
+ OPENSSL_free(ctx->aead_state);
+}
+
+static int aead_aes_gcm_tls12_seal_scatter(
+ const EVP_AEAD_CTX *ctx, uint8_t *out, uint8_t *out_tag,
+ size_t *out_tag_len, size_t max_out_tag_len, const uint8_t *nonce,
+ size_t nonce_len, const uint8_t *in, size_t in_len, const uint8_t *extra_in,
+ size_t extra_in_len, const uint8_t *ad, size_t ad_len) {
+ struct aead_aes_gcm_tls12_ctx *gcm_ctx = ctx->aead_state;
+ if (nonce_len != 12) {
+ OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_UNSUPPORTED_NONCE_SIZE);
+ return 0;
+ }
+
+ // The given nonces must be strictly monotonically increasing.
+ uint64_t given_counter;
+ OPENSSL_memcpy(&given_counter, nonce + nonce_len - sizeof(given_counter),
+ sizeof(given_counter));
+ given_counter = CRYPTO_bswap8(given_counter);
+ if (given_counter == UINT64_MAX ||
+ given_counter < gcm_ctx->min_next_nonce) {
+ OPENSSL_PUT_ERROR(CIPHER, CIPHER_R_INVALID_NONCE);
+ return 0;
+ }
+
+ gcm_ctx->min_next_nonce = given_counter + 1;
+
+ return aead_aes_gcm_seal_scatter(ctx, out, out_tag, out_tag_len,
+ max_out_tag_len, nonce, nonce_len, in,
+ in_len, extra_in, extra_in_len, ad, ad_len);
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_128_gcm_tls12) {
+ memset(out, 0, sizeof(EVP_AEAD));
+
+ out->key_len = 16;
+ out->nonce_len = 12;
+ out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+ out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+ out->seal_scatter_supports_extra_in = 1;
+
+ out->init = aead_aes_gcm_tls12_init;
+ out->cleanup = aead_aes_gcm_tls12_cleanup;
+ out->seal_scatter = aead_aes_gcm_tls12_seal_scatter;
+ out->open_gather = aead_aes_gcm_open_gather;
+}
+
+DEFINE_METHOD_FUNCTION(EVP_AEAD, EVP_aead_aes_256_gcm_tls12) {
+ memset(out, 0, sizeof(EVP_AEAD));
+
+ out->key_len = 32;
+ out->nonce_len = 12;
+ out->overhead = EVP_AEAD_AES_GCM_TAG_LEN;
+ out->max_tag_len = EVP_AEAD_AES_GCM_TAG_LEN;
+ out->seal_scatter_supports_extra_in = 1;
+
+ out->init = aead_aes_gcm_tls12_init;
+ out->cleanup = aead_aes_gcm_tls12_cleanup;
+ out->seal_scatter = aead_aes_gcm_tls12_seal_scatter;
+ out->open_gather = aead_aes_gcm_open_gather;
+}
+
+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() && CRYPTO_is_ARMv8_PMULL_capable();
+#else
+ return 0;
+#endif
+}
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