AES - 在tiny-AES-c基础上封装了2个应用函数(加密/解密)

AES - 在tiny-AES-c基础上封装了2个应用函数(加密/解密)

概述

在github山有个星数很高的AES的C库 tiny-AES-c (https://github.com/kokke/tiny-AES-c.git)
这个库用起来挺好的, 但是需要自己考虑key, iv, data的对齐问题.

我对 AES256 + CBC 封装了2个函数, 调用方只需要给出key, iv, in_data, out_data, 只要有数据就行, 不需要考虑对齐(key, iv, data), 其他调用库之前的预操作, 都在封装函数内做了.

初步测试一下, 好使. 有啥bug能用的时候再改.
封装函数的调用例子

void my_test_encrypt_cbc_ex()
{const char* pKey = "my_key";const char* pIv = "my_iv";const char* pIn = "hello world";uint8_t* pszOut = new uint8_t[strlen(pIn) + 32];size_t len_Out = strlen(pIn) + 32;bool b_rc = false;b_rc = AES256_CBC_encrypt_buffer_ex((uint8_t*)pKey, (int)strlen(pKey), (uint8_t*)pIv, (int)strlen(pIv), (uint8_t*)pIn, (size_t)strlen(pIn), (uint8_t*)pszOut, &len_Out);assert(true == b_rc);showBufHex("out buf", pszOut, len_Out);uint8_t* pszDecrypt = new uint8_t[len_Out];size_t lenDecrypt = len_Out;b_rc = AES256_CBC_decrypt_buffer_ex((uint8_t*)pKey, (int)strlen(pKey), (uint8_t*)pIv, (int)strlen(pIv), (uint8_t*)pszOut, len_Out, (uint8_t*)pszDecrypt, &lenDecrypt);assert(true == b_rc);pszDecrypt[lenDecrypt] = 0x00;printf("descrypt data = [%s]\n", pszDecrypt);if (NULL != pszOut){delete []pszOut;pszOut = NULL;}if (NULL != pszDecrypt){delete[]pszDecrypt;pszDecrypt = NULL;}
}

增加2个封装函数的AES库

aes.h

#ifndef _AES_H_
#define _AES_H_#include <stdint.h>
#include <stddef.h>
#include <stdbool.h> // for bool// Enable ECB, CTR and CBC mode. Note this can be done before including aes.h or at compile-time.
// E.g. with GCC by using the -D flag: gcc -c aes.c -DCBC=0 -DCTR=1 -DECB=1
#define CBC 1 // cbc好一些
#define CTR 1
#define ECB 1// #define the macros below to 1/0 to enable/disable the mode of operation.
//
// CBC enables AES encryption in CBC-mode of operation.
// CTR enables encryption in counter-mode.
// ECB enables the basic ECB 16-byte block algorithm. All can be enabled simultaneously.// The #ifndef-guard allows it to be configured before #include'ing or at compile time.
#ifndef CBC
#define CBC 1
#endif#ifndef ECB
#define ECB 1
#endif#ifndef CTR
#define CTR 1
#endif// #define AES128 1
// #define AES192 1
#define AES256 1#define AES_BLOCKLEN 16 // Block length in bytes - AES is 128b block only#if defined(AES256) && (AES256 == 1)
#define AES_KEYLEN 32
#define AES_keyExpSize 240
#elif defined(AES192) && (AES192 == 1)
#define AES_KEYLEN 24
#define AES_keyExpSize 208
#else
#define AES_KEYLEN 16   // Key length in bytes
#define AES_keyExpSize 176
#endifstruct AES_ctx
{uint8_t RoundKey[AES_keyExpSize];
#if (defined(CBC) && (CBC == 1)) || (defined(CTR) && (CTR == 1))uint8_t Iv[AES_BLOCKLEN];
#endif
};void AES_init_ctx(struct AES_ctx* ctx, const uint8_t* key);
#if (defined(CBC) && (CBC == 1)) || (defined(CTR) && (CTR == 1))
void AES_init_ctx_iv(struct AES_ctx* ctx, const uint8_t* key, const uint8_t* iv);
void AES_ctx_set_iv(struct AES_ctx* ctx, const uint8_t* iv);
#endif#if defined(ECB) && (ECB == 1)
// buffer size is exactly AES_BLOCKLEN bytes; 
// you need only AES_init_ctx as IV is not used in ECB 
// NB: ECB is considered insecure for most uses
void AES_ECB_encrypt(const struct AES_ctx* ctx, uint8_t* buf);
void AES_ECB_decrypt(const struct AES_ctx* ctx, uint8_t* buf);#endif // #if defined(ECB) && (ECB == !)#if defined(CBC) && (CBC == 1)
// buffer size MUST be mutile of AES_BLOCKLEN;
// Suggest https://en.wikipedia.org/wiki/Padding_(cryptography)#PKCS7 for padding scheme
// NOTES: you need to set IV in ctx via AES_init_ctx_iv() or AES_ctx_set_iv()
//        no IV should ever be reused with the same key 
void AES_CBC_encrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, size_t length);
void AES_CBC_decrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, size_t length);// 封装的AES_CBC加解密, 只要送入数据(key/iv/bu)和长度(len_key/len_iv/len_buf), 函数里面自己处理(key/iv的对齐(截断或填充)加解密初始化/块尾部填充)
bool AES256_CBC_encrypt_buffer_ex(uint8_t* key, int len_key, uint8_t* iv, int len_iv, uint8_t* buf_in, size_t len_buf_in, uint8_t* buf_out, size_t* len_buf_out);
bool AES256_CBC_decrypt_buffer_ex(uint8_t* key, int len_key, uint8_t* iv, int len_iv, uint8_t* buf_in, size_t len_buf_in, uint8_t* buf_out, size_t* len_buf_out);#endif // #if defined(CBC) && (CBC == 1)#if defined(CTR) && (CTR == 1)// Same function for encrypting as for decrypting. 
// IV is incremented for every block, and used after encryption as XOR-compliment for output
// Suggesting https://en.wikipedia.org/wiki/Padding_(cryptography)#PKCS7 for padding scheme
// NOTES: you need to set IV in ctx with AES_init_ctx_iv() or AES_ctx_set_iv()
//        no IV should ever be reused with the same key 
void AES_CTR_xcrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, size_t length);#endif // #if defined(CTR) && (CTR == 1)#endif // _AES_H_

aes.c

/*This is an implementation of the AES algorithm, specifically ECB, CTR and CBC mode.
Block size can be chosen in aes.h - available choices are AES128, AES192, AES256.The implementation is verified against the test vectors in:National Institute of Standards and Technology Special Publication 800-38A 2001 EDECB-AES128
----------plain-text:6bc1bee22e409f96e93d7e117393172aae2d8a571e03ac9c9eb76fac45af8e5130c81c46a35ce411e5fbc1191a0a52eff69f2445df4f9b17ad2b417be66c3710key:2b7e151628aed2a6abf7158809cf4f3cresulting cipher3ad77bb40d7a3660a89ecaf32466ef97f5d3d58503b9699de785895a96fdbaaf43b1cd7f598ece23881b00e3ed0306887b0c785e27e8ad3f8223207104725dd4NOTE:   String length must be evenly divisible by 16byte (str_len % 16 == 0)You should pad the end of the string with zeros if this is not the case.For AES192/256 the key size is proportionally larger.*//*****************************************************************************/
/* Includes:                                                                 */
/*****************************************************************************/
#include <string.h> // CBC mode, for memset
#include "aes.h"/*****************************************************************************/
/* Defines:                                                                  */
/*****************************************************************************/
// The number of columns comprising a state in AES. This is a constant in AES. Value=4
#define Nb 4#if defined(AES256) && (AES256 == 1)
#define Nk 8
#define Nr 14
#elif defined(AES192) && (AES192 == 1)
#define Nk 6
#define Nr 12
#else
#define Nk 4        // The number of 32 bit words in a key.
#define Nr 10       // The number of rounds in AES Cipher.
#endif// jcallan@github points out that declaring Multiply as a function 
// reduces code size considerably with the Keil ARM compiler.
// See this link for more information: https://github.com/kokke/tiny-AES-C/pull/3
#ifndef MULTIPLY_AS_A_FUNCTION
#define MULTIPLY_AS_A_FUNCTION 0
#endif/*****************************************************************************/
/* Private variables:                                                        */
/*****************************************************************************/
// state - array holding the intermediate results during decryption.
typedef uint8_t state_t[4][4];// The lookup-tables are marked const so they can be placed in read-only storage instead of RAM
// The numbers below can be computed dynamically trading ROM for RAM - 
// This can be useful in (embedded) bootloader applications, where ROM is often limited.
static const uint8_t sbox[256] = {//0     1    2      3     4    5     6     7      8    9     A      B    C     D     E     F0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76,0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0,0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15,0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75,0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84,0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf,0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8,0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2,0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73,0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb,0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79,0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08,0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a,0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e,0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf,0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16 };#if (defined(CBC) && CBC == 1) || (defined(ECB) && ECB == 1)
static const uint8_t rsbox[256] = {0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb,0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb,0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e,0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25,0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92,0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84,0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06,0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b,0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73,0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e,0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b,0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4,0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f,0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef,0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61,0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d };
#endif// The round constant word array, Rcon[i], contains the values given by 
// x to the power (i-1) being powers of x (x is denoted as {02}) in the field GF(2^8)
static const uint8_t Rcon[11] = {0x8d, 0x01, 0x02, 0x04, 0x08, 0x10, 0x20, 0x40, 0x80, 0x1b, 0x36 };/** Jordan Goulder points out in PR #12 (https://github.com/kokke/tiny-AES-C/pull/12),* that you can remove most of the elements in the Rcon array, because they are unused.** From Wikipedia's article on the Rijndael key schedule @ https://en.wikipedia.org/wiki/Rijndael_key_schedule#Rcon** "Only the first some of these constants are actually used – up to rcon[10] for AES-128 (as 11 round keys are needed),*  up to rcon[8] for AES-192, up to rcon[7] for AES-256. rcon[0] is not used in AES algorithm."*//*****************************************************************************//* Private functions:                                                        *//*****************************************************************************//*static uint8_t getSBoxValue(uint8_t num){return sbox[num];}*/
#define getSBoxValue(num) (sbox[(num)])// This function produces Nb(Nr+1) round keys. The round keys are used in each round to decrypt the states. 
static void KeyExpansion(uint8_t* RoundKey, const uint8_t* Key)
{unsigned i, j, k;uint8_t tempa[4]; // Used for the column/row operations// The first round key is the key itself.for (i = 0; i < Nk; ++i){RoundKey[(i * 4) + 0] = Key[(i * 4) + 0];RoundKey[(i * 4) + 1] = Key[(i * 4) + 1];RoundKey[(i * 4) + 2] = Key[(i * 4) + 2];RoundKey[(i * 4) + 3] = Key[(i * 4) + 3];}// All other round keys are found from the previous round keys.for (i = Nk; i < Nb * (Nr + 1); ++i){{k = (i - 1) * 4;tempa[0] = RoundKey[k + 0];tempa[1] = RoundKey[k + 1];tempa[2] = RoundKey[k + 2];tempa[3] = RoundKey[k + 3];}if (i % Nk == 0){// This function shifts the 4 bytes in a word to the left once.// [a0,a1,a2,a3] becomes [a1,a2,a3,a0]// Function RotWord(){const uint8_t u8tmp = tempa[0];tempa[0] = tempa[1];tempa[1] = tempa[2];tempa[2] = tempa[3];tempa[3] = u8tmp;}// SubWord() is a function that takes a four-byte input word and // applies the S-box to each of the four bytes to produce an output word.// Function Subword(){tempa[0] = getSBoxValue(tempa[0]);tempa[1] = getSBoxValue(tempa[1]);tempa[2] = getSBoxValue(tempa[2]);tempa[3] = getSBoxValue(tempa[3]);}tempa[0] = tempa[0] ^ Rcon[i / Nk];}
#if defined(AES256) && (AES256 == 1)if (i % Nk == 4){// Function Subword(){tempa[0] = getSBoxValue(tempa[0]);tempa[1] = getSBoxValue(tempa[1]);tempa[2] = getSBoxValue(tempa[2]);tempa[3] = getSBoxValue(tempa[3]);}}
#endifj = i * 4; k = (i - Nk) * 4;RoundKey[j + 0] = RoundKey[k + 0] ^ tempa[0];RoundKey[j + 1] = RoundKey[k + 1] ^ tempa[1];RoundKey[j + 2] = RoundKey[k + 2] ^ tempa[2];RoundKey[j + 3] = RoundKey[k + 3] ^ tempa[3];}
}void AES_init_ctx(struct AES_ctx* ctx, const uint8_t* key)
{KeyExpansion(ctx->RoundKey, key);
}
#if (defined(CBC) && (CBC == 1)) || (defined(CTR) && (CTR == 1))
void AES_init_ctx_iv(struct AES_ctx* ctx, const uint8_t* key, const uint8_t* iv)
{KeyExpansion(ctx->RoundKey, key);memcpy(ctx->Iv, iv, AES_BLOCKLEN);
}
void AES_ctx_set_iv(struct AES_ctx* ctx, const uint8_t* iv)
{memcpy(ctx->Iv, iv, AES_BLOCKLEN);
}
#endif// This function adds the round key to state.
// The round key is added to the state by an XOR function.
static void AddRoundKey(uint8_t round, state_t* state, const uint8_t* RoundKey)
{uint8_t i, j;for (i = 0; i < 4; ++i){for (j = 0; j < 4; ++j){(*state)[i][j] ^= RoundKey[(round * Nb * 4) + (i * Nb) + j];}}
}// The SubBytes Function Substitutes the values in the
// state matrix with values in an S-box.
static void SubBytes(state_t* state)
{uint8_t i, j;for (i = 0; i < 4; ++i){for (j = 0; j < 4; ++j){(*state)[j][i] = getSBoxValue((*state)[j][i]);}}
}// The ShiftRows() function shifts the rows in the state to the left.
// Each row is shifted with different offset.
// Offset = Row number. So the first row is not shifted.
static void ShiftRows(state_t* state)
{uint8_t temp;// Rotate first row 1 columns to left  temp = (*state)[0][1];(*state)[0][1] = (*state)[1][1];(*state)[1][1] = (*state)[2][1];(*state)[2][1] = (*state)[3][1];(*state)[3][1] = temp;// Rotate second row 2 columns to left  temp = (*state)[0][2];(*state)[0][2] = (*state)[2][2];(*state)[2][2] = temp;temp = (*state)[1][2];(*state)[1][2] = (*state)[3][2];(*state)[3][2] = temp;// Rotate third row 3 columns to lefttemp = (*state)[0][3];(*state)[0][3] = (*state)[3][3];(*state)[3][3] = (*state)[2][3];(*state)[2][3] = (*state)[1][3];(*state)[1][3] = temp;
}static uint8_t xtime(uint8_t x)
{return ((x << 1) ^ (((x >> 7) & 1) * 0x1b));
}// MixColumns function mixes the columns of the state matrix
static void MixColumns(state_t* state)
{uint8_t i;uint8_t Tmp, Tm, t;for (i = 0; i < 4; ++i){t = (*state)[i][0];Tmp = (*state)[i][0] ^ (*state)[i][1] ^ (*state)[i][2] ^ (*state)[i][3];Tm = (*state)[i][0] ^ (*state)[i][1]; Tm = xtime(Tm);  (*state)[i][0] ^= Tm ^ Tmp;Tm = (*state)[i][1] ^ (*state)[i][2]; Tm = xtime(Tm);  (*state)[i][1] ^= Tm ^ Tmp;Tm = (*state)[i][2] ^ (*state)[i][3]; Tm = xtime(Tm);  (*state)[i][2] ^= Tm ^ Tmp;Tm = (*state)[i][3] ^ t;              Tm = xtime(Tm);  (*state)[i][3] ^= Tm ^ Tmp;}
}// Multiply is used to multiply numbers in the field GF(2^8)
// Note: The last call to xtime() is unneeded, but often ends up generating a smaller binary
//       The compiler seems to be able to vectorize the operation better this way.
//       See https://github.com/kokke/tiny-AES-c/pull/34
#if MULTIPLY_AS_A_FUNCTION
static uint8_t Multiply(uint8_t x, uint8_t y)
{return (((y & 1) * x) ^((y >> 1 & 1) * xtime(x)) ^((y >> 2 & 1) * xtime(xtime(x))) ^((y >> 3 & 1) * xtime(xtime(xtime(x)))) ^((y >> 4 & 1) * xtime(xtime(xtime(xtime(x)))))); /* this last call to xtime() can be omitted */
}
#else
#define Multiply(x, y)                                \(  ((y & 1) * x) ^                              \((y>>1 & 1) * xtime(x)) ^                       \((y>>2 & 1) * xtime(xtime(x))) ^                \((y>>3 & 1) * xtime(xtime(xtime(x)))) ^         \((y>>4 & 1) * xtime(xtime(xtime(xtime(x))))))   \

#endif#if (defined(CBC) && CBC == 1) || (defined(ECB) && ECB == 1)
/*
static uint8_t getSBoxInvert(uint8_t num)
{return rsbox[num];
}
*/
#define getSBoxInvert(num) (rsbox[(num)])// MixColumns function mixes the columns of the state matrix.
// The method used to multiply may be difficult to understand for the inexperienced.
// Please use the references to gain more information.
static void InvMixColumns(state_t* state)
{int i;uint8_t a, b, c, d;for (i = 0; i < 4; ++i){a = (*state)[i][0];b = (*state)[i][1];c = (*state)[i][2];d = (*state)[i][3];(*state)[i][0] = Multiply(a, 0x0e) ^ Multiply(b, 0x0b) ^ Multiply(c, 0x0d) ^ Multiply(d, 0x09);(*state)[i][1] = Multiply(a, 0x09) ^ Multiply(b, 0x0e) ^ Multiply(c, 0x0b) ^ Multiply(d, 0x0d);(*state)[i][2] = Multiply(a, 0x0d) ^ Multiply(b, 0x09) ^ Multiply(c, 0x0e) ^ Multiply(d, 0x0b);(*state)[i][3] = Multiply(a, 0x0b) ^ Multiply(b, 0x0d) ^ Multiply(c, 0x09) ^ Multiply(d, 0x0e);}
}// The SubBytes Function Substitutes the values in the
// state matrix with values in an S-box.
static void InvSubBytes(state_t* state)
{uint8_t i, j;for (i = 0; i < 4; ++i){for (j = 0; j < 4; ++j){(*state)[j][i] = getSBoxInvert((*state)[j][i]);}}
}static void InvShiftRows(state_t* state)
{uint8_t temp;// Rotate first row 1 columns to right  temp = (*state)[3][1];(*state)[3][1] = (*state)[2][1];(*state)[2][1] = (*state)[1][1];(*state)[1][1] = (*state)[0][1];(*state)[0][1] = temp;// Rotate second row 2 columns to right temp = (*state)[0][2];(*state)[0][2] = (*state)[2][2];(*state)[2][2] = temp;temp = (*state)[1][2];(*state)[1][2] = (*state)[3][2];(*state)[3][2] = temp;// Rotate third row 3 columns to righttemp = (*state)[0][3];(*state)[0][3] = (*state)[1][3];(*state)[1][3] = (*state)[2][3];(*state)[2][3] = (*state)[3][3];(*state)[3][3] = temp;
}
#endif // #if (defined(CBC) && CBC == 1) || (defined(ECB) && ECB == 1)// Cipher is the main function that encrypts the PlainText.
static void Cipher(state_t* state, const uint8_t* RoundKey)
{uint8_t round = 0;// Add the First round key to the state before starting the rounds.AddRoundKey(0, state, RoundKey);// There will be Nr rounds.// The first Nr-1 rounds are identical.// These Nr rounds are executed in the loop below.// Last one without MixColumns()for (round = 1; ; ++round){SubBytes(state);ShiftRows(state);if (round == Nr) {break;}MixColumns(state);AddRoundKey(round, state, RoundKey);}// Add round key to last roundAddRoundKey(Nr, state, RoundKey);
}#if (defined(CBC) && CBC == 1) || (defined(ECB) && ECB == 1)
static void InvCipher(state_t* state, const uint8_t* RoundKey)
{uint8_t round = 0;// Add the First round key to the state before starting the rounds.AddRoundKey(Nr, state, RoundKey);// There will be Nr rounds.// The first Nr-1 rounds are identical.// These Nr rounds are executed in the loop below.// Last one without InvMixColumn()for (round = (Nr - 1); ; --round){InvShiftRows(state);InvSubBytes(state);AddRoundKey(round, state, RoundKey);if (round == 0) {break;}InvMixColumns(state);}}
#endif // #if (defined(CBC) && CBC == 1) || (defined(ECB) && ECB == 1)/*****************************************************************************/
/* Public functions:                                                         */
/*****************************************************************************/
#if defined(ECB) && (ECB == 1)void AES_ECB_encrypt(const struct AES_ctx* ctx, uint8_t* buf)
{// The next function call encrypts the PlainText with the Key using AES algorithm.Cipher((state_t*)buf, ctx->RoundKey);
}void AES_ECB_decrypt(const struct AES_ctx* ctx, uint8_t* buf)
{// The next function call decrypts the PlainText with the Key using AES algorithm.InvCipher((state_t*)buf, ctx->RoundKey);
}#endif // #if defined(ECB) && (ECB == 1)#if defined(CBC) && (CBC == 1)static void XorWithIv(uint8_t* buf, const uint8_t* Iv)
{uint8_t i;for (i = 0; i < AES_BLOCKLEN; ++i) // The block in AES is always 128bit no matter the key size{buf[i] ^= Iv[i];}
}void AES_CBC_encrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, size_t length)
{size_t i;uint8_t* Iv = ctx->Iv;for (i = 0; i < length; i += AES_BLOCKLEN){XorWithIv(buf, Iv);Cipher((state_t*)buf, ctx->RoundKey);Iv = buf;buf += AES_BLOCKLEN;}/* store Iv in ctx for next call */memcpy(ctx->Iv, Iv, AES_BLOCKLEN);
}void AES_CBC_decrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, size_t length)
{size_t i;uint8_t storeNextIv[AES_BLOCKLEN];for (i = 0; i < length; i += AES_BLOCKLEN){memcpy(storeNextIv, buf, AES_BLOCKLEN);InvCipher((state_t*)buf, ctx->RoundKey);XorWithIv(buf, ctx->Iv);memcpy(ctx->Iv, storeNextIv, AES_BLOCKLEN);buf += AES_BLOCKLEN;}}static bool safe_fill_buf(uint8_t* pBufDst, size_t len_bufDst, uint8_t* pBufSrc, size_t len_bufSrc)
{bool b_rc = false;uint8_t* pBufDstCur = NULL;size_t len_bufDstCur = 0;size_t len_to_copy = 0;do {if ((NULL == pBufDst) || (len_bufDst <= 0)){break;}if ((NULL == pBufSrc) || (len_bufSrc <= 0)){break;}if (len_bufDst <= len_bufSrc){memcpy(pBufDst, pBufSrc, len_bufDst);}else {// 将pBufSrc依次附加到pBufDst, 直到将pBufDst填满pBufDstCur = pBufDst;len_bufDstCur = len_bufDst;len_to_copy = len_bufSrc;do {if (len_bufDstCur <= len_to_copy){len_to_copy = len_bufDstCur;}memcpy(pBufDstCur, pBufSrc, len_to_copy);len_bufDstCur -= len_to_copy;pBufDstCur += len_to_copy;} while (len_bufDstCur > 0);}b_rc = true;} while (false);return b_rc;
}static bool buf_add_padding(uint8_t* buf, size_t len_buf, size_t len_data, size_t* len_out_with_padding)
{bool b_rc = false;int iMod16 = 0;int iPaddingLen = 0;int i = 0;uint8_t* pBufCur = NULL;do {// 只有 (len_data > 0) 满足时, 才能加paddingif ((NULL == buf) || (len_data <= 0) || ((len_buf - len_data) < 32) || (NULL == len_out_with_padding)){break;}iPaddingLen = 0x10; // 即使原始数据长度是0x10的倍数, 也需要加0x10个padding, 这样才能区分出原始数据iMod16 = len_data % 0x10;if (iMod16 > 0){iPaddingLen += (0x10 - iMod16); // 最多加31个padding}*len_out_with_padding = (len_data + iPaddingLen);pBufCur = buf;for (i = 0; i < iPaddingLen; i++){*(pBufCur + len_data + i) = (uint8_t)iPaddingLen;}b_rc = true;} while (false);return b_rc;
}bool AES256_CBC_encrypt_buffer_ex(uint8_t* key, int len_key, uint8_t* iv, int len_iv, uint8_t* buf_in, size_t len_buf_in, uint8_t* buf_out, size_t* len_buf_out)
{bool b_rc = false;struct AES_ctx ctx;// key = 32bytesuint8_t key_new[32];// iv = 16 bytesuint8_t iv_new[16];// 要求给出的输出buf长度 = (buf_in_len + 32)// in = 16的倍数, 如果原始输入不够16倍数, 填充(16 + N%16)个字节, 填充的字节为0x10 ~ (0x10 + N%16)// 如果输入数据len = 16 x N + 0, 那么填充0x10个0x10// 如果输入数据len = 16 x N + 1, 那么填充0x11个0x11// 解密数据后, 用返回的buf_out内容和len_buf_out长度, 函数内会处理好// 原始数据长度 >0就行, 会处理成加密输入数据// 输入数据的长度必须 >= 32(包括填充的16 + N%16 个字节)do {// 处理key的对齐if ((NULL == key) || (len_key <= 0)){break;}if (!safe_fill_buf(key_new, sizeof(key_new), key, len_key)){break;}// 处理iv的对齐if ((NULL == iv) || (len_iv <= 0)){break;}if (!safe_fill_buf(iv_new, sizeof(iv_new), iv, len_iv)){break;}// 处理buf的对齐if ((NULL == buf_in) || (len_buf_in <= 0)){break;}if ((NULL == buf_out) || (NULL == len_buf_out) || (*len_buf_out <= 0)){break;}if ((*len_buf_out - len_buf_in) < 32){// 为了在buf_out末尾填充buf, 要有16~31个字节空间break;}// 将输入数据拷贝到输出数据memcpy(buf_out, buf_in, len_buf_in);// 填充(add padding)输出数据if (!buf_add_padding(buf_out, *len_buf_out, len_buf_in, len_buf_out)){break;}// 将准备好的输出数据送AES加密AES_init_ctx_iv(&ctx, key_new, iv_new);AES_CBC_encrypt_buffer(&ctx, buf_out, *len_buf_out);b_rc = true;} while (false);return b_rc;
}bool AES256_CBC_decrypt_buffer_ex(uint8_t* key, int len_key, uint8_t* iv, int len_iv, uint8_t* buf_in, size_t len_buf_in, uint8_t* buf_out, size_t* len_buf_out)
{bool b_rc = false;struct AES_ctx ctx;// key = 32bytesuint8_t key_new[32];// iv = 16 bytesuint8_t iv_new[16];// 要求给出的输出buf长度 = (buf_in_len + 32)// in = 16的倍数, 如果原始输入不够16倍数, 填充(16 + N%16)个字节, 填充的字节为0x10 ~ (0x10 + N%16)// 如果输入数据len = 16 x N + 0, 那么填充0x10个0x10// 如果输入数据len = 16 x N + 1, 那么填充0x11个0x11// 解密数据后, 用返回的buf_out内容和len_buf_out长度, 函数内会处理好// 原始数据长度 >0就行, 会处理成加密输入数据// 输入数据的长度必须 >= 32(包括填充的16 + N%16 个字节)do {// 处理key的对齐if ((NULL == key) || (len_key <= 0)){break;}if (!safe_fill_buf(key_new, sizeof(key_new), key, len_key)){break;}// 处理iv的对齐if ((NULL == iv) || (len_iv <= 0)){break;}if (!safe_fill_buf(iv_new, sizeof(iv_new), iv, len_iv)){break;}// 处理buf的对齐if ((NULL == buf_in) || (len_buf_in <= 0)){break;}if ((NULL == buf_out) || (NULL == len_buf_out) || (*len_buf_out <= 0)){break;}// 解密的buf长度至少要不比加密的buf长度小if ((*len_buf_out - len_buf_in) < 0){break;}// 将输入数据拷贝到输出数据memcpy(buf_out, buf_in, len_buf_in);// 解密时, 不需要考虑padding填充// 将准备好的输出数据送AES解密AES_init_ctx_iv(&ctx, key_new, iv_new);AES_CBC_decrypt_buffer(&ctx, buf_out, len_buf_in);// 将去掉padding的解密数据长度更新到 *len_buf_out*len_buf_out = len_buf_in;*len_buf_out -= buf_out[len_buf_in - 1];b_rc = true;} while (false);return b_rc;
}#endif // #if defined(CBC) && (CBC == 1)#if defined(CTR) && (CTR == 1)/* Symmetrical operation: same function for encrypting as for decrypting. Note any IV/nonce should never be reused with the same key */
void AES_CTR_xcrypt_buffer(struct AES_ctx* ctx, uint8_t* buf, size_t length)
{uint8_t buffer[AES_BLOCKLEN];size_t i;int bi;for (i = 0, bi = AES_BLOCKLEN; i < length; ++i, ++bi){if (bi == AES_BLOCKLEN) /* we need to regen xor compliment in buffer */{memcpy(buffer, ctx->Iv, AES_BLOCKLEN);Cipher((state_t*)buffer, ctx->RoundKey);/* Increment Iv and handle overflow */for (bi = (AES_BLOCKLEN - 1); bi >= 0; --bi){/* inc will overflow */if (ctx->Iv[bi] == 255){ctx->Iv[bi] = 0;continue;}ctx->Iv[bi] += 1;break;}bi = 0;}buf[i] = (buf[i] ^ buffer[bi]);}
}#endif // #if defined(CTR) && (CTR == 1)

在官方测试程序上改的测试程序(用来测试这2个封装函数)

// @file test.cpp
// env = vs2019 vc++ console#include <stdio.h>
#include <string.h>
#include <stdint.h>
#include <assert.h> // for assert() #ifdef __cplusplus
#define INCLUDE_C_HEADER_BEGIN extern "C" {
#define INCLUDE_C_HEADER_END }
#else
#define INCLUDE_C_HEADER_BEGIN
#define INCLUDE_C_HEADER_END
#endif Enable ECB, CTR and CBC mode. Note this can be done before including aes.h or at compile-time.
 E.g. with GCC by using the -D flag: gcc -c aes.c -DCBC=0 -DCTR=1 -DECB=1
//#define CBC 1
//#define CTR 1
//#define ECB 1INCLUDE_C_HEADER_BEGIN
#include "aes.h"
INCLUDE_C_HEADER_ENDstatic void phex(uint8_t* str);
static int test_encrypt_cbc(void);
static int test_decrypt_cbc(void);
static int test_encrypt_ctr(void);
static int test_decrypt_ctr(void);
static int test_encrypt_ecb(void);
static int test_decrypt_ecb(void);
static void test_encrypt_ecb_verbose(void);void my_test_encrypt_cbc_ex();int main(void)
{int exit = 0;#if defined(AES256)printf("\nTesting AES256\n\n");
#elif defined(AES192)printf("\nTesting AES192\n\n");
#elif defined(AES128)printf("\nTesting AES128\n\n");
#elseprintf("You need to specify a symbol between AES128, AES192 or AES256. Exiting");return 0;
#endifmy_test_encrypt_cbc_ex();//   // cbc好一些//   test_encrypt_cbc();//   test_decrypt_cbc();//   exit = test_encrypt_cbc() + test_decrypt_cbc() +//test_encrypt_ctr() + test_decrypt_ctr() +//test_decrypt_ecb() + test_encrypt_ecb();//   test_encrypt_ecb_verbose();return exit;
}void showBufHex(const char* pszTip, uint8_t* pBuf, size_t len_Buf)
{size_t i = 0;int i_line_char_cnt = 0;do {if (NULL != pszTip){printf("%s\n", pszTip);}for (i = 0; i < len_Buf; i++){printf("%2.2X ", pBuf[i]);if (16 == ++i_line_char_cnt){i_line_char_cnt = 0;printf("\n");}}} while (false);
}void my_test_encrypt_cbc_ex()
{const char* pKey = "my_key";const char* pIv = "my_iv";const char* pIn = "hello world";uint8_t* pszOut = new uint8_t[strlen(pIn) + 32];size_t len_Out = strlen(pIn) + 32;bool b_rc = false;b_rc = AES256_CBC_encrypt_buffer_ex((uint8_t*)pKey, (int)strlen(pKey), (uint8_t*)pIv, (int)strlen(pIv), (uint8_t*)pIn, (size_t)strlen(pIn), (uint8_t*)pszOut, &len_Out);assert(true == b_rc);showBufHex("out buf", pszOut, len_Out);uint8_t* pszDecrypt = new uint8_t[len_Out];size_t lenDecrypt = len_Out;b_rc = AES256_CBC_decrypt_buffer_ex((uint8_t*)pKey, (int)strlen(pKey), (uint8_t*)pIv, (int)strlen(pIv), (uint8_t*)pszOut, len_Out, (uint8_t*)pszDecrypt, &lenDecrypt);assert(true == b_rc);pszDecrypt[lenDecrypt] = 0x00;printf("descrypt data = [%s]\n", pszDecrypt);if (NULL != pszOut){delete []pszOut;pszOut = NULL;}if (NULL != pszDecrypt){delete[]pszDecrypt;pszDecrypt = NULL;}
}// prints string as hex
static void phex(uint8_t* str)
{#if defined(AES256)uint8_t len = 32;
#elif defined(AES192)uint8_t len = 24;
#elif defined(AES128)uint8_t len = 16;
#endifunsigned char i;for (i = 0; i < len; ++i)printf("%.2x", str[i]);printf("\n");
}static void test_encrypt_ecb_verbose(void)
{// Example of more verbose verificationuint8_t i;// 128bit keyuint8_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 };// 512bit textuint8_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,(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,(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,(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 };// print text to encrypt, key and IVprintf("ECB encrypt verbose:\n\n");printf("plain text:\n");for (i = (uint8_t)0; i < (uint8_t)4; ++i){phex(plain_text + i * (uint8_t)16);}printf("\n");printf("key:\n");phex(key);printf("\n");// print the resulting cipher as 4 x 16 byte stringsprintf("ciphertext:\n");struct AES_ctx ctx;AES_init_ctx(&ctx, key);for (i = 0; i < 4; ++i){AES_ECB_encrypt(&ctx, plain_text + (i * 16));phex(plain_text + (i * 16));}printf("\n");
}static int test_encrypt_ecb(void)
{
#if defined(AES256)uint8_t key[] = { 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4 };uint8_t out[] = { 0xf3, 0xee, 0xd1, 0xbd, 0xb5, 0xd2, 0xa0, 0x3c, 0x06, 0x4b, 0x5a, 0x7e, 0x3d, 0xb1, 0x81, 0xf8 };
#elif defined(AES192)uint8_t key[] = { 0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5,0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b };uint8_t out[] = { 0xbd, 0x33, 0x4f, 0x1d, 0x6e, 0x45, 0xf2, 0x5f, 0xf7, 0x12, 0xa2, 0x14, 0x57, 0x1f, 0xa5, 0xcc };
#elif defined(AES128)uint8_t key[] = { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c };uint8_t out[] = { 0x3a, 0xd7, 0x7b, 0xb4, 0x0d, 0x7a, 0x36, 0x60, 0xa8, 0x9e, 0xca, 0xf3, 0x24, 0x66, 0xef, 0x97 };
#endifuint8_t in[] = { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a };struct AES_ctx ctx;AES_init_ctx(&ctx, key);AES_ECB_encrypt(&ctx, in);printf("ECB encrypt: ");if (0 == memcmp((char*)out, (char*)in, 16)) {printf("SUCCESS!\n");return(0);}else {printf("FAILURE!\n");return(1);}
}static int test_decrypt_cbc(void)
{#if defined(AES256)uint8_t key[] = { 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4 };uint8_t in[] = { 0xf5, 0x8c, 0x4c, 0x04, 0xd6, 0xe5, 0xf1, 0xba, 0x77, 0x9e, 0xab, 0xfb, 0x5f, 0x7b, 0xfb, 0xd6,0x9c, 0xfc, 0x4e, 0x96, 0x7e, 0xdb, 0x80, 0x8d, 0x67, 0x9f, 0x77, 0x7b, 0xc6, 0x70, 0x2c, 0x7d,0x39, 0xf2, 0x33, 0x69, 0xa9, 0xd9, 0xba, 0xcf, 0xa5, 0x30, 0xe2, 0x63, 0x04, 0x23, 0x14, 0x61,0xb2, 0xeb, 0x05, 0xe2, 0xc3, 0x9b, 0xe9, 0xfc, 0xda, 0x6c, 0x19, 0x07, 0x8c, 0x6a, 0x9d, 0x1b };
#elif defined(AES192)uint8_t key[] = { 0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5, 0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b };uint8_t in[] = { 0x4f, 0x02, 0x1d, 0xb2, 0x43, 0xbc, 0x63, 0x3d, 0x71, 0x78, 0x18, 0x3a, 0x9f, 0xa0, 0x71, 0xe8,0xb4, 0xd9, 0xad, 0xa9, 0xad, 0x7d, 0xed, 0xf4, 0xe5, 0xe7, 0x38, 0x76, 0x3f, 0x69, 0x14, 0x5a,0x57, 0x1b, 0x24, 0x20, 0x12, 0xfb, 0x7a, 0xe0, 0x7f, 0xa9, 0xba, 0xac, 0x3d, 0xf1, 0x02, 0xe0,0x08, 0xb0, 0xe2, 0x79, 0x88, 0x59, 0x88, 0x81, 0xd9, 0x20, 0xa9, 0xe6, 0x4f, 0x56, 0x15, 0xcd };
#elif defined(AES128)uint8_t key[] = { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c };uint8_t in[] = { 0x76, 0x49, 0xab, 0xac, 0x81, 0x19, 0xb2, 0x46, 0xce, 0xe9, 0x8e, 0x9b, 0x12, 0xe9, 0x19, 0x7d,0x50, 0x86, 0xcb, 0x9b, 0x50, 0x72, 0x19, 0xee, 0x95, 0xdb, 0x11, 0x3a, 0x91, 0x76, 0x78, 0xb2,0x73, 0xbe, 0xd6, 0xb8, 0xe3, 0xc1, 0x74, 0x3b, 0x71, 0x16, 0xe6, 0x9e, 0x22, 0x22, 0x95, 0x16,0x3f, 0xf1, 0xca, 0xa1, 0x68, 0x1f, 0xac, 0x09, 0x12, 0x0e, 0xca, 0x30, 0x75, 0x86, 0xe1, 0xa7 };
#endifuint8_t iv[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };uint8_t out[] = { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 };//  uint8_t buffer[64];struct AES_ctx ctx;AES_init_ctx_iv(&ctx, key, iv);AES_CBC_decrypt_buffer(&ctx, in, 64);printf("CBC decrypt: ");if (0 == memcmp((char*)out, (char*)in, 64)) {printf("SUCCESS!\n");return(0);}else {printf("FAILURE!\n");return(1);}
}static int test_encrypt_cbc(void)
{
#if defined(AES256)uint8_t key[] = { 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4 };uint8_t out[] = { 0xf5, 0x8c, 0x4c, 0x04, 0xd6, 0xe5, 0xf1, 0xba, 0x77, 0x9e, 0xab, 0xfb, 0x5f, 0x7b, 0xfb, 0xd6,0x9c, 0xfc, 0x4e, 0x96, 0x7e, 0xdb, 0x80, 0x8d, 0x67, 0x9f, 0x77, 0x7b, 0xc6, 0x70, 0x2c, 0x7d,0x39, 0xf2, 0x33, 0x69, 0xa9, 0xd9, 0xba, 0xcf, 0xa5, 0x30, 0xe2, 0x63, 0x04, 0x23, 0x14, 0x61,0xb2, 0xeb, 0x05, 0xe2, 0xc3, 0x9b, 0xe9, 0xfc, 0xda, 0x6c, 0x19, 0x07, 0x8c, 0x6a, 0x9d, 0x1b };
#elif defined(AES192)uint8_t key[] = { 0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5, 0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b };uint8_t out[] = { 0x4f, 0x02, 0x1d, 0xb2, 0x43, 0xbc, 0x63, 0x3d, 0x71, 0x78, 0x18, 0x3a, 0x9f, 0xa0, 0x71, 0xe8,0xb4, 0xd9, 0xad, 0xa9, 0xad, 0x7d, 0xed, 0xf4, 0xe5, 0xe7, 0x38, 0x76, 0x3f, 0x69, 0x14, 0x5a,0x57, 0x1b, 0x24, 0x20, 0x12, 0xfb, 0x7a, 0xe0, 0x7f, 0xa9, 0xba, 0xac, 0x3d, 0xf1, 0x02, 0xe0,0x08, 0xb0, 0xe2, 0x79, 0x88, 0x59, 0x88, 0x81, 0xd9, 0x20, 0xa9, 0xe6, 0x4f, 0x56, 0x15, 0xcd };
#elif defined(AES128)uint8_t key[] = { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c };uint8_t out[] = { 0x76, 0x49, 0xab, 0xac, 0x81, 0x19, 0xb2, 0x46, 0xce, 0xe9, 0x8e, 0x9b, 0x12, 0xe9, 0x19, 0x7d,0x50, 0x86, 0xcb, 0x9b, 0x50, 0x72, 0x19, 0xee, 0x95, 0xdb, 0x11, 0x3a, 0x91, 0x76, 0x78, 0xb2,0x73, 0xbe, 0xd6, 0xb8, 0xe3, 0xc1, 0x74, 0x3b, 0x71, 0x16, 0xe6, 0x9e, 0x22, 0x22, 0x95, 0x16,0x3f, 0xf1, 0xca, 0xa1, 0x68, 0x1f, 0xac, 0x09, 0x12, 0x0e, 0xca, 0x30, 0x75, 0x86, 0xe1, 0xa7 };
#endifuint8_t iv[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };uint8_t in[] = { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 };struct AES_ctx ctx;AES_init_ctx_iv(&ctx, key, iv);AES_CBC_encrypt_buffer(&ctx, in, 64);printf("CBC encrypt: ");if (0 == memcmp((char*)out, (char*)in, 64)) {printf("SUCCESS!\n");return(0);}else {printf("FAILURE!\n");return(1);}
}static int test_xcrypt_ctr(const char* xcrypt);
static int test_encrypt_ctr(void)
{return test_xcrypt_ctr("encrypt");
}static int test_decrypt_ctr(void)
{return test_xcrypt_ctr("decrypt");
}static int test_xcrypt_ctr(const char* xcrypt)
{
#if defined(AES256)uint8_t key[32] = { 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4 };uint8_t in[64] = { 0x60, 0x1e, 0xc3, 0x13, 0x77, 0x57, 0x89, 0xa5, 0xb7, 0xa7, 0xf5, 0x04, 0xbb, 0xf3, 0xd2, 0x28,0xf4, 0x43, 0xe3, 0xca, 0x4d, 0x62, 0xb5, 0x9a, 0xca, 0x84, 0xe9, 0x90, 0xca, 0xca, 0xf5, 0xc5,0x2b, 0x09, 0x30, 0xda, 0xa2, 0x3d, 0xe9, 0x4c, 0xe8, 0x70, 0x17, 0xba, 0x2d, 0x84, 0x98, 0x8d,0xdf, 0xc9, 0xc5, 0x8d, 0xb6, 0x7a, 0xad, 0xa6, 0x13, 0xc2, 0xdd, 0x08, 0x45, 0x79, 0x41, 0xa6 };
#elif defined(AES192)uint8_t key[24] = { 0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5,0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b };uint8_t in[64] = { 0x1a, 0xbc, 0x93, 0x24, 0x17, 0x52, 0x1c, 0xa2, 0x4f, 0x2b, 0x04, 0x59, 0xfe, 0x7e, 0x6e, 0x0b,0x09, 0x03, 0x39, 0xec, 0x0a, 0xa6, 0xfa, 0xef, 0xd5, 0xcc, 0xc2, 0xc6, 0xf4, 0xce, 0x8e, 0x94,0x1e, 0x36, 0xb2, 0x6b, 0xd1, 0xeb, 0xc6, 0x70, 0xd1, 0xbd, 0x1d, 0x66, 0x56, 0x20, 0xab, 0xf7,0x4f, 0x78, 0xa7, 0xf6, 0xd2, 0x98, 0x09, 0x58, 0x5a, 0x97, 0xda, 0xec, 0x58, 0xc6, 0xb0, 0x50 };
#elif defined(AES128)uint8_t key[16] = { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c };uint8_t in[64] = { 0x87, 0x4d, 0x61, 0x91, 0xb6, 0x20, 0xe3, 0x26, 0x1b, 0xef, 0x68, 0x64, 0x99, 0x0d, 0xb6, 0xce,0x98, 0x06, 0xf6, 0x6b, 0x79, 0x70, 0xfd, 0xff, 0x86, 0x17, 0x18, 0x7b, 0xb9, 0xff, 0xfd, 0xff,0x5a, 0xe4, 0xdf, 0x3e, 0xdb, 0xd5, 0xd3, 0x5e, 0x5b, 0x4f, 0x09, 0x02, 0x0d, 0xb0, 0x3e, 0xab,0x1e, 0x03, 0x1d, 0xda, 0x2f, 0xbe, 0x03, 0xd1, 0x79, 0x21, 0x70, 0xa0, 0xf3, 0x00, 0x9c, 0xee };
#endifuint8_t iv[16] = { 0xf0, 0xf1, 0xf2, 0xf3, 0xf4, 0xf5, 0xf6, 0xf7, 0xf8, 0xf9, 0xfa, 0xfb, 0xfc, 0xfd, 0xfe, 0xff };uint8_t out[64] = { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a,0xae, 0x2d, 0x8a, 0x57, 0x1e, 0x03, 0xac, 0x9c, 0x9e, 0xb7, 0x6f, 0xac, 0x45, 0xaf, 0x8e, 0x51,0x30, 0xc8, 0x1c, 0x46, 0xa3, 0x5c, 0xe4, 0x11, 0xe5, 0xfb, 0xc1, 0x19, 0x1a, 0x0a, 0x52, 0xef,0xf6, 0x9f, 0x24, 0x45, 0xdf, 0x4f, 0x9b, 0x17, 0xad, 0x2b, 0x41, 0x7b, 0xe6, 0x6c, 0x37, 0x10 };struct AES_ctx ctx;AES_init_ctx_iv(&ctx, key, iv);AES_CTR_xcrypt_buffer(&ctx, in, 64);printf("CTR %s: ", xcrypt);if (0 == memcmp((char*)out, (char*)in, 64)) {printf("SUCCESS!\n");return(0);}else {printf("FAILURE!\n");return(1);}
}static int test_decrypt_ecb(void)
{
#if defined(AES256)uint8_t key[] = { 0x60, 0x3d, 0xeb, 0x10, 0x15, 0xca, 0x71, 0xbe, 0x2b, 0x73, 0xae, 0xf0, 0x85, 0x7d, 0x77, 0x81,0x1f, 0x35, 0x2c, 0x07, 0x3b, 0x61, 0x08, 0xd7, 0x2d, 0x98, 0x10, 0xa3, 0x09, 0x14, 0xdf, 0xf4 };uint8_t in[] = { 0xf3, 0xee, 0xd1, 0xbd, 0xb5, 0xd2, 0xa0, 0x3c, 0x06, 0x4b, 0x5a, 0x7e, 0x3d, 0xb1, 0x81, 0xf8 };
#elif defined(AES192)uint8_t key[] = { 0x8e, 0x73, 0xb0, 0xf7, 0xda, 0x0e, 0x64, 0x52, 0xc8, 0x10, 0xf3, 0x2b, 0x80, 0x90, 0x79, 0xe5,0x62, 0xf8, 0xea, 0xd2, 0x52, 0x2c, 0x6b, 0x7b };uint8_t in[] = { 0xbd, 0x33, 0x4f, 0x1d, 0x6e, 0x45, 0xf2, 0x5f, 0xf7, 0x12, 0xa2, 0x14, 0x57, 0x1f, 0xa5, 0xcc };
#elif defined(AES128)uint8_t key[] = { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6, 0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c };uint8_t in[] = { 0x3a, 0xd7, 0x7b, 0xb4, 0x0d, 0x7a, 0x36, 0x60, 0xa8, 0x9e, 0xca, 0xf3, 0x24, 0x66, 0xef, 0x97 };
#endifuint8_t out[] = { 0x6b, 0xc1, 0xbe, 0xe2, 0x2e, 0x40, 0x9f, 0x96, 0xe9, 0x3d, 0x7e, 0x11, 0x73, 0x93, 0x17, 0x2a };struct AES_ctx ctx;AES_init_ctx(&ctx, key);AES_ECB_decrypt(&ctx, in);printf("ECB decrypt: ");if (0 == memcmp((char*)out, (char*)in, 16)) {printf("SUCCESS!\n");return(0);}else {printf("FAILURE!\n");return(1);}
}

END