From 1c630b1722da9a6c15e206f0405e36468f1a48f1 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Thu, 26 Sep 2024 00:21:03 -0400 Subject: lib: crypto: Add AES-256-GCM support Signed-off-by: Ian Moffett --- lib/include/crypto/aes.h | 50 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+) create mode 100644 lib/include/crypto/aes.h (limited to 'lib/include') diff --git a/lib/include/crypto/aes.h b/lib/include/crypto/aes.h new file mode 100644 index 0000000..5973323 --- /dev/null +++ b/lib/include/crypto/aes.h @@ -0,0 +1,50 @@ +/* + * Copyright (c) 2023-2024 Ian Marco Moffett and the Osmora Team. + * 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. Neither the name of Hyra nor the names of its + * contributors may be used to endorse or promote products derived from + * this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" + * AND ANY EXPRESS 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 COPYRIGHT OWNER OR 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. + */ + +#ifndef CRYPTO_AES_H_ +#define CRYPTO_AES_H_ + +#include + +#define AES_IV_SIZE 16 +#define AES_GCM_TAG_SIZE 16 + +struct aes_message { + unsigned char tag[AES_GCM_TAG_SIZE]; + unsigned char iv[AES_IV_SIZE]; + unsigned char *ciphertext; + int ciphertext_len; +}; + +int aes256_encrypt(const unsigned char *data, size_t len, + const unsigned char *key, struct aes_message *res); +int aes256_decrypt(struct aes_message *amp, const unsigned char *key, + unsigned char **res); + +#endif /* CRYPTO_AES_H_ */ -- cgit v1.2.3