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57 lines
1.4 KiB
C
57 lines
1.4 KiB
C
#include "aes.h"
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#include <stdio.h>
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#include <stdlib.h>
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#if defined(AES256) && (AES256 == 1)
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#define AES_KEYSIZE 256
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#elif defined(AES192) && (AES192 == 1)
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#define AES_KEYSIZE 192
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#else
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#define AES_KEYSIZE 128
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#endif
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void AES_ECB_encrypt(const uint8_t* input, const uint8_t* key, uint8_t *output, const uint32_t length)
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{
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printf("AES_ECB_encrypt not implemented\n");
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exit(-1);
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}
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void AES_ECB_decrypt(const uint8_t* input, const uint8_t* key, uint8_t *output, const uint32_t length)
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{
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printf("AES_ECB_encrypt not implemented\n");
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exit(-1);
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}
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void AES_CBC_encrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
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{
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static aes_context ctx;
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static int done=0;
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if(done==0)
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{
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aes_init( &ctx);
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done=1;
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}
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char tmp_iv[16];
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if(key!=0) aes_setkey_enc(&ctx,key,AES_KEYSIZE);
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memcpy(tmp_iv,iv,16);
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aes_crypt_cbc( &ctx, AES_ENCRYPT, length, (unsigned char* )tmp_iv, (const unsigned char*)input,(unsigned char*) output );
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return ;
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}
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void AES_CBC_decrypt_buffer(uint8_t* output, uint8_t* input, uint32_t length, const uint8_t* key, const uint8_t* iv)
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{
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static aes_context ctx;
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static int done=0;
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if(done==0)
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{
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aes_init( &ctx);
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done=1;
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}
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char tmp_iv[16];
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if(key!=0) aes_setkey_dec(&ctx,key,AES_KEYSIZE);
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memcpy(tmp_iv,iv,16);
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aes_crypt_cbc( &ctx,AES_DECRYPT, length, (unsigned char*)tmp_iv, (const unsigned char*)input, (unsigned char*) output );
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return;
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}
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