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Diffstat (limited to 'src/file.c')
-rw-r--r-- | src/file.c | 81 |
1 files changed, 0 insertions, 81 deletions
diff --git a/src/file.c b/src/file.c deleted file mode 100644 index d8ff9c7..0000000 --- a/src/file.c +++ /dev/null @@ -1,81 +0,0 @@ -/** - * \file - * \author Egor Tensin <Egor.Tensin@gmail.com> - * \date 2015 - * \copyright This file is licensed under the terms of the MIT License. - * See LICENSE.txt for details. - */ - -#include <aesni/all.h> - -#include <stdlib.h> -#include <string.h> - -size_t aes128ecb_encrypt_buffer( - const unsigned char* src, - size_t src_size, - unsigned char* dest, - Aes128KeySchedule* key_schedule) -{ - size_t rem_size = src_size % 16; - size_t padding_size = 16 - rem_size; - size_t dest_size = src_size + padding_size; - - if (dest == NULL) - return dest_size; - - size_t src_len = src_size / 16; - - for (size_t i = 0; i < src_len; ++i, src += 16, dest += 16) - { - AesBlock128 plaintext = load_aes_block128(src); - AesBlock128 ciphertext = aes128ecb_encrypt_block(plaintext, key_schedule); - store_aes_block128(ciphertext, dest); - } - - unsigned char padding[16] = { 0x10 }; - - if (rem_size != 0) - { - memcpy(padding, src, rem_size); - memset(padding + rem_size, padding_size, padding_size); - } - - AesBlock128 plaintext = load_aes_block128(padding); - AesBlock128 ciphertext = aes128ecb_encrypt_block(plaintext, key_schedule); - store_aes_block128(ciphertext, dest); - - return dest_size; -} - -size_t aes128ecb_decrypt_buffer( - const unsigned char* src, - size_t src_size, - unsigned char* dest, - Aes128KeySchedule* inverted_schedule) -{ - size_t dest_size = src_size; - - if (dest == NULL) - return dest_size; - - size_t src_len = src_size / 16; - - for (size_t i = 0; i < src_len - 1; ++i, src += 16, dest += 16) - { - AesBlock128 ciphertext = load_aes_block128(src); - AesBlock128 plaintext = aes128ecb_decrypt_block(ciphertext, inverted_schedule); - store_aes_block128(plaintext, dest); - } - - AesBlock128 ciphertext = load_aes_block128(src); - AesBlock128 plaintext = aes128ecb_decrypt_block(ciphertext, inverted_schedule); - unsigned char padding[16]; - store_aes_block128(plaintext, padding); - - if (padding[0] == 0x10) - return dest_size - 16; - - memcpy(dest, padding, 16 - padding[15]); - return dest_size - padding[15]; -} |