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Diffstat (limited to '')
| -rw-r--r-- | lib/isc/aes.c | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/lib/isc/aes.c b/lib/isc/aes.c new file mode 100644 index 0000000..a0e23c5 --- /dev/null +++ b/lib/isc/aes.c @@ -0,0 +1,72 @@ +/* + * Copyright (C) Internet Systems Consortium, Inc. ("ISC") + * + * SPDX-License-Identifier: MPL-2.0 + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, you can obtain one at https://mozilla.org/MPL/2.0/. + * + * See the COPYRIGHT file distributed with this work for additional + * information regarding copyright ownership. + */ + +/*! \file isc/aes.c */ + +#include <openssl/evp.h> +#include <openssl/opensslv.h> + +#include <isc/aes.h> +#include <isc/assertions.h> +#include <isc/platform.h> +#include <isc/string.h> +#include <isc/types.h> +#include <isc/util.h> + +void +isc_aes128_crypt(const unsigned char *key, const unsigned char *in, + unsigned char *out) { + EVP_CIPHER_CTX *c; + int len; + + c = EVP_CIPHER_CTX_new(); + RUNTIME_CHECK(c != NULL); + RUNTIME_CHECK(EVP_EncryptInit(c, EVP_aes_128_ecb(), key, NULL) == 1); + EVP_CIPHER_CTX_set_padding(c, 0); + RUNTIME_CHECK( + EVP_EncryptUpdate(c, out, &len, in, ISC_AES_BLOCK_LENGTH) == 1); + RUNTIME_CHECK(len == ISC_AES_BLOCK_LENGTH); + EVP_CIPHER_CTX_free(c); +} + +void +isc_aes192_crypt(const unsigned char *key, const unsigned char *in, + unsigned char *out) { + EVP_CIPHER_CTX *c; + int len; + + c = EVP_CIPHER_CTX_new(); + RUNTIME_CHECK(c != NULL); + RUNTIME_CHECK(EVP_EncryptInit(c, EVP_aes_192_ecb(), key, NULL) == 1); + EVP_CIPHER_CTX_set_padding(c, 0); + RUNTIME_CHECK( + EVP_EncryptUpdate(c, out, &len, in, ISC_AES_BLOCK_LENGTH) == 1); + RUNTIME_CHECK(len == ISC_AES_BLOCK_LENGTH); + EVP_CIPHER_CTX_free(c); +} + +void +isc_aes256_crypt(const unsigned char *key, const unsigned char *in, + unsigned char *out) { + EVP_CIPHER_CTX *c; + int len; + + c = EVP_CIPHER_CTX_new(); + RUNTIME_CHECK(c != NULL); + RUNTIME_CHECK(EVP_EncryptInit(c, EVP_aes_256_ecb(), key, NULL) == 1); + EVP_CIPHER_CTX_set_padding(c, 0); + RUNTIME_CHECK( + EVP_EncryptUpdate(c, out, &len, in, ISC_AES_BLOCK_LENGTH) == 1); + RUNTIME_CHECK(len == ISC_AES_BLOCK_LENGTH); + EVP_CIPHER_CTX_free(c); +} |