David Benjamin
33d1049b1f
We use the standard Apache 2.0 file header, described in "APPENDIX: How to apply the Apache License to your work." This was primarily automated by running: git ls-tree -r --name-only HEAD | xargs go run ./util/relicense.go See go/boringssl-relicensing-triage for the results of triaging the output of the tool. As part of this, switch from taking fiat-crypto under MIT license to Apache 2.0. (It is licensed under MIT OR Apache-2.0 OR BSD-1-Clause.) The copyright_summary tool can also be used to confirm we didn't accidentally drop any copyright lines: # Run before the CL git grep -l Copyright | xargs go run ./util/copyright_summary.go -out /tmp/old.json # Run after the CL git grep -l Copyright | xargs go run ./util/copyright_summary.go -compare /tmp/old.json Bug: 364634028 Change-Id: I17c50e761e9d077a1f92e25969e50ed35e320c59 Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/75852 Reviewed-by: Bob Beck <bbe@google.com> Commit-Queue: David Benjamin <davidben@google.com> Reviewed-by: Adam Langley <agl@google.com>
99 lines
3.0 KiB
C++
99 lines
3.0 KiB
C++
// Copyright 2017 The BoringSSL Authors
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// https://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include <openssl/cipher.h>
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#include <string.h>
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#include <openssl/aes.h>
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#include <openssl/obj.h>
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#include "../../crypto/fipsmodule/cipher/internal.h"
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#include "../../crypto/internal.h"
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typedef struct {
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AES_KEY ks;
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} EVP_CFB_CTX;
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static int aes_cfb_init_key(EVP_CIPHER_CTX *ctx, const uint8_t *key,
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const uint8_t *iv, int enc) {
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if (key) {
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EVP_CFB_CTX *cfb_ctx = reinterpret_cast<EVP_CFB_CTX *>(ctx->cipher_data);
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AES_set_encrypt_key(key, ctx->key_len * 8, &cfb_ctx->ks);
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}
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return 1;
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}
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static int aes_cfb128_cipher(EVP_CIPHER_CTX *ctx, uint8_t *out,
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const uint8_t *in, size_t len) {
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if (!out || !in) {
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return 0;
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}
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EVP_CFB_CTX *cfb_ctx = reinterpret_cast<EVP_CFB_CTX *>(ctx->cipher_data);
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int num = ctx->num;
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AES_cfb128_encrypt(in, out, len, &cfb_ctx->ks, ctx->iv, &num,
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ctx->encrypt ? AES_ENCRYPT : AES_DECRYPT);
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ctx->num = num;
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return 1;
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}
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static const EVP_CIPHER aes_128_cfb128 = {
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/* nid= */ NID_aes_128_cfb128,
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/* block_size= */ 1,
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/* key_len= */ 16,
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/* iv_len= */ 16,
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/* ctx_size= */ sizeof(EVP_CFB_CTX),
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/* flags= */ EVP_CIPH_CFB_MODE,
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/* init= */ aes_cfb_init_key,
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/* cipher= */ aes_cfb128_cipher,
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/* cleanup= */ nullptr,
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/* ctrl= */ nullptr,
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};
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static const EVP_CIPHER aes_192_cfb128 = {
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/* nid= */ NID_aes_192_cfb128,
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/* block_size= */ 1,
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/* key_len= */ 24,
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/* iv_len= */ 16,
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/* ctx_size= */ sizeof(EVP_CFB_CTX),
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/* flags= */ EVP_CIPH_CFB_MODE,
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/* init= */ aes_cfb_init_key,
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/* cipher= */ aes_cfb128_cipher,
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/* cleanup= */ nullptr,
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/* ctrl= */ nullptr,
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};
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static const EVP_CIPHER aes_256_cfb128 = {
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/* nid= */ NID_aes_256_cfb128,
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/* block_size= */ 1,
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/* key_len= */ 32,
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/* iv_len= */ 16,
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/* ctx_size= */ sizeof(EVP_CFB_CTX),
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/* flags= */ EVP_CIPH_CFB_MODE,
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/* init= */ aes_cfb_init_key,
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/* cipher= */ aes_cfb128_cipher,
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/* cleanup= */ nullptr,
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/* ctrl= */ nullptr,
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};
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const EVP_CIPHER *EVP_aes_128_cfb128(void) { return &aes_128_cfb128; }
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const EVP_CIPHER *EVP_aes_128_cfb(void) { return &aes_128_cfb128; }
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const EVP_CIPHER *EVP_aes_192_cfb128(void) { return &aes_192_cfb128; }
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const EVP_CIPHER *EVP_aes_192_cfb(void) { return &aes_192_cfb128; }
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const EVP_CIPHER *EVP_aes_256_cfb128(void) { return &aes_256_cfb128; }
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const EVP_CIPHER *EVP_aes_256_cfb(void) { return &aes_256_cfb128; }
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