密码库LibTomCrypt学习记录——（2.22）分组密码算法的工作模式——F8代码示例

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本文展示了一个使用F8模式的AES加密算法测试案例。测试使用了特定的密钥、盐值、初始化向量（IV）、明文和预期的密文进行。通过比较加密后的输出与预期密文来验证加密过程的正确性。

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//#include <Windows.h>
#include "tomcrypt.h"
#include "TestMode.h"

int Test_F8_AES(void)
{
   static const unsigned char key[16] = {
       0x23, 0x48, 0x29, 0x00, 0x84, 0x67, 0xbe, 0x18,
       0x6c, 0x3d, 0xe1, 0x4a, 0xae, 0x72, 0xd6, 0x2c };
   static const unsigned char salt[4] = {
       0x32, 0xf2, 0x87, 0x0d };
   static const unsigned char IV[16] = {
       0x00, 0x6e, 0x5c, 0xba, 0x50, 0x68, 0x1d, 0xe5,
       0x5c, 0x62, 0x15, 0x99, 0xd4, 0x62, 0x56, 0x4a };
   static const unsigned char pt[39] = {
       0x70, 0x73, 0x65, 0x75, 0x64, 0x6f, 0x72, 0x61,
       0x6e, 0x64, 0x6f, 0x6d, 0x6e, 0x65, 0x73, 0x73,
       0x20, 0x69, 0x73, 0x20, 0x74, 0x68, 0x65, 0x20,
       0x6e, 0x65, 0x78, 0x74, 0x20, 0x62, 0x65, 0x73,
       0x74, 0x20, 0x74, 0x68, 0x69, 0x6e, 0x67 };
   static const unsigned char ct[39] = {
       0x01, 0x9c, 0xe7, 0xa2, 0x6e, 0x78, 0x54, 0x01,
       0x4a, 0x63, 0x66, 0xaa, 0x95, 0xd4, 0xee, 0xfd,
       0x1a, 0xd4, 0x17, 0x2a, 0x14, 0xf9, 0xfa, 0xf4,
       0x55, 0xb7, 0xf1, 0xd4, 0xb6, 0x2b, 0xd0, 0x8f,
       0x56, 0x2c, 0x0e, 0xef, 0x7c, 0x48, 0x02 };
   unsigned char buf[39];
   symmetric_F8 f8;
   int err, idx;

if ( idx = register_cipher (&aes_desc) != CRYPT_OK ) { return CRYPT_INVALID_CIPHER; }
if ( ( idx = find_cipher("aes") ) == -1) {return CRYPT_NOP;}

printf("Start Test F8! \n\n" );

   /* initialize the context */
   if ((err = f8_start(idx, IV, key, sizeof(key), salt, sizeof(salt), 0, &f8)) != CRYPT_OK) { return err;}

   /* encrypt block */
   if ((err = f8_encrypt(pt, buf, sizeof(pt), &f8)) != CRYPT_OK) {return err;}

f8_done(&f8);

printf("Test Vector %s! \nFinish F8 Test Mode! \n\n",
XMEMCMP(buf, ct, sizeof(ct)) ? "err" : "ok"/* compare */);

   system("pause");

   return CRYPT_OK;

}