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  1. #include <stdio.h>
  2. #include <string.h>
  3. #include <stdint.h>
  4.  
  5. // Enable both ECB and CBC mode. Note this can be done before including aes.h or at compile-time.
  6. // E.g. with GCC by using the -D flag: gcc -c aes.c -DCBC=0 -DECB=1
  7. #define CBC 1
  8. #define ECB 1
  9.  
  10. #include "aes.h"
  11.  
  12. static void phex(uint8_t* str);
  13. static void test_encrypt_ecb(void);
  14. static void test_decrypt_ecb(void);
  15. static void test_encrypt_ecb_verbose(void);
  16. static void test_encrypt_cbc(void);
  17. static void test_decrypt_cbc(void);
  18.  
  19.  
  20.  
  21. int main(void)
  22. {
  23.     test_encrypt_cbc();
  24.     test_decrypt_cbc();
  25.     test_decrypt_ecb();
  26.     test_encrypt_ecb();
  27.     test_encrypt_ecb_verbose();
  28.  
  29.     return 0;
  30. }
  31.  
  32.  
  33.  
  34. // prints string as hex
  35. static void phex(uint8_t* str)
  36. {
  37.     unsigned char i;
  38.     for(i = 0; i < 16; ++i)
  39.         printf("%.2x", str[i]);
  40.     printf("\n");
  41. }
  42.  
  43. static void test_encrypt_ecb_verbose(void)
  44. {
  45.     // Example of more verbose verification
  46.  
  47.     uint8_t i, buf[64], buf2[64];
  48.  
  49.     // 128bit key
  50.     uint8_t key[16] =        { (uint8_t) 0x2b, (uint8_t) 0x7e, (uint8_t) 0x15, (uint8_t) 0x16, (uint8_t) 0x28, (uint8_t) 0xae, (uint8_t) 0xd2, (uint8_t) 0xa6, (uint8_t) 0xab, (uint8_t) 0xf7, (uint8_t) 0x15, (uint8_t) 0x88, (uint8_t) 0x09, (uint8_t) 0xcf, (uint8_t) 0x4f, (uint8_t) 0x3c };
  51.     // 512bit text
  52.     uint8_t plain_text[64] = { (uint8_t) 0x6b, (uint8_t) 0xc1, (uint8_t) 0xbe, (uint8_t) 0xe2, (uint8_t) 0x2e, (uint8_t) 0x40, (uint8_t) 0x9f, (uint8_t) 0x96, (uint8_t) 0xe9, (uint8_t) 0x3d, (uint8_t) 0x7e, (uint8_t) 0x11, (uint8_t) 0x73, (uint8_t) 0x93, (uint8_t) 0x17, (uint8_t) 0x2a,
  53.                                (uint8_t) 0xae, (uint8_t) 0x2d, (uint8_t) 0x8a, (uint8_t) 0x57, (uint8_t) 0x1e, (uint8_t) 0x03, (uint8_t) 0xac, (uint8_t) 0x9c, (uint8_t) 0x9e, (uint8_t) 0xb7, (uint8_t) 0x6f, (uint8_t) 0xac, (uint8_t) 0x45, (uint8_t) 0xaf, (uint8_t) 0x8e, (uint8_t) 0x51,
  54.                                (uint8_t) 0x30, (uint8_t) 0xc8, (uint8_t) 0x1c, (uint8_t) 0x46, (uint8_t) 0xa3, (uint8_t) 0x5c, (uint8_t) 0xe4, (uint8_t) 0x11, (uint8_t) 0xe5, (uint8_t) 0xfb, (uint8_t) 0xc1, (uint8_t) 0x19, (uint8_t) 0x1a, (uint8_t) 0x0a, (uint8_t) 0x52, (uint8_t) 0xef,
  55.                                (uint8_t) 0xf6, (uint8_t) 0x9f, (uint8_t) 0x24, (uint8_t) 0x45, (uint8_t) 0xdf, (uint8_t) 0x4f, (uint8_t) 0x9b, (uint8_t) 0x17, (uint8_t) 0xad, (uint8_t) 0x2b, (uint8_t) 0x41, (uint8_t) 0x7b, (uint8_t) 0xe6, (uint8_t) 0x6c, (uint8_t) 0x37, (uint8_t) 0x10 };
  56.  
  57.     memset(buf, 0, 64);
  58.     memset(buf2, 0, 64);
  59.  
  60.     // print text to encrypt, key and IV
  61.     printf("ECB encrypt verbose:\n\n");
  62.     printf("plain text:\n");
  63.     for(i = (uint8_t) 0; i < (uint8_t) 4; ++i)
  64.     {
  65.         phex(plain_text + i * (uint8_t) 16);
  66.     }
  67.     printf("\n");
  68.  
  69.     printf("key:\n");
  70.     phex(key);
  71.     printf("\n");
  72.  
  73.     // print the resulting cipher as 4 x 16 byte strings
  74.     printf("ciphertext:\n");
  75.     for(i = 0; i < 4; ++i)
  76.     {
  77.         AES128_ECB_encrypt(plain_text + (i*16), key, buf+(i*16));
  78.         phex(buf + (i*16));
  79.     }
  80.     printf("\n");
  81. }
  82.  
  83.  
  84. static void test_encrypt_ecb(void)
  85. {
  86.   uint8_t key[] = {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c};
  87.   uint8_t in[]  = {0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a};
  88.   uint8_t out[] = {0x3a, 0xd7, 0x7b, 0xb4, 0x0d, 0x7a, 0x36, 0x60, 0xa8, 0x9e, 0xca, 0xf3, 0x24, 0x66, 0xef, 0x97};
  89.   uint8_t buffer[16];
  90.  
  91.   AES128_ECB_encrypt(in, key, buffer);
  92.  
  93.   printf("ECB decrypt: ");
  94.  
  95.   if(0 == memcmp((char*) out, (char*) buffer, 16))
  96.   {
  97.     printf("SUCCESS!\n");
  98.   }
  99.   else
  100.   {
  101.     printf("FAILURE!\n");
  102.   }
  103. }
  104.  
  105. static void test_decrypt_cbc(void)
  106. {
  107.   // Example "simulating" a smaller buffer...
  108.  
  109.   uint8_t key[] = { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c };
  110.   uint8_t iv[]  = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };
  111.   uint8_t in[]  = { 0x76, 0x49, 0xab, 0xac, 0x81, 0x19, 0xb2, 0x46, 0xce, 0xe9, 0x8e, 0x9b, 0x12, 0xe9, 0x19, 0x7d,
  112.                     0x50, 0x86, 0xcb, 0x9b, 0x50, 0x72, 0x19, 0xee, 0x95, 0xdb, 0x11, 0x3a, 0x91, 0x76, 0x78, 0xb2,
  113.                     0x73, 0xbe, 0xd6, 0xb8, 0xe3, 0xc1, 0x74, 0x3b, 0x71, 0x16, 0xe6, 0x9e, 0x22, 0x22, 0x95, 0x16, 
  114.                     0x3f, 0xf1, 0xca, 0xa1, 0x68, 0x1f, 0xac, 0x09, 0x12, 0x0e, 0xca, 0x30, 0x75, 0x86, 0xe1, 0xa7 };
  115.   uint8_t out[] = { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
  116.                     0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
  117.                     0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
  118.                     0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 };
  119.   uint8_t buffer[64];
  120.  
  121.   AES128_CBC_decrypt_buffer(buffer+0, in+0,  16, key, iv);
  122.   AES128_CBC_decrypt_buffer(buffer+16, in+16, 16, 0, 0);
  123.   AES128_CBC_decrypt_buffer(buffer+32, in+32, 16, 0, 0);
  124.   AES128_CBC_decrypt_buffer(buffer+48, in+48, 16, 0, 0);
  125.  
  126.   printf("CBC decrypt: ");
  127.  
  128.   if(0 == memcmp((char*) out, (char*) buffer, 64))
  129.   {
  130.     printf("SUCCESS!\n");
  131.   }
  132.   else
  133.   {
  134.     printf("FAILURE!\n");
  135.   }
  136. }
  137.  
  138. static void test_encrypt_cbc(void)
  139. {
  140.   uint8_t key[] = { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c };
  141.   uint8_t iv[]  = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };
  142.   uint8_t in[]  = { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,
  143.                     0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,
  144.                     0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,
  145.                     0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 };
  146.   uint8_t out[] = { 0x76, 0x49, 0xab, 0xac, 0x81, 0x19, 0xb2, 0x46, 0xce, 0xe9, 0x8e, 0x9b, 0x12, 0xe9, 0x19, 0x7d,
  147.                     0x50, 0x86, 0xcb, 0x9b, 0x50, 0x72, 0x19, 0xee, 0x95, 0xdb, 0x11, 0x3a, 0x91, 0x76, 0x78, 0xb2,
  148.                     0x73, 0xbe, 0xd6, 0xb8, 0xe3, 0xc1, 0x74, 0x3b, 0x71, 0x16, 0xe6, 0x9e, 0x22, 0x22, 0x95, 0x16, 
  149.                     0x3f, 0xf1, 0xca, 0xa1, 0x68, 0x1f, 0xac, 0x09, 0x12, 0x0e, 0xca, 0x30, 0x75, 0x86, 0xe1, 0xa7 };
  150.   uint8_t buffer[64];
  151.  
  152.   AES128_CBC_encrypt_buffer(buffer, in, 64, key, iv);
  153.  
  154.   printf("CBC encrypt: ");
  155.  
  156.   if(0 == memcmp((char*) out, (char*) buffer, 64))
  157.   {
  158.     printf("SUCCESS!\n");
  159.   }
  160.   else
  161.   {
  162.     printf("FAILURE!\n");
  163.   }
  164. }
  165.  
  166.  
  167. static void test_decrypt_ecb(void)
  168. {
  169.   uint8_t key[] = {0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c};
  170.   uint8_t in[]  = {0x3a, 0xd7, 0x7b, 0xb4, 0x0d, 0x7a, 0x36, 0x60, 0xa8, 0x9e, 0xca, 0xf3, 0x24, 0x66, 0xef, 0x97};
  171.   uint8_t out[] = {0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a};
  172.   uint8_t buffer[16];
  173.  
  174.   AES128_ECB_decrypt(in, key, buffer);
  175.  
  176.   printf("ECB decrypt: ");
  177.  
  178.   if(0 == memcmp((char*) out, (char*) buffer, 16))
  179.   {
  180.     printf("SUCCESS!\n");
  181.   }
  182.   else
  183.   {
  184.     printf("FAILURE!\n");
  185.   }
  186. }
  187.  
  188.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
copy 
Standard input is empty
compilation info 
prog.c:10:17: fatal error: aes.h: No such file or directory
compilation terminated.
stdout
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Standard output is empty
https://ideone.com/4XzHFY
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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