C语言实现AES加解密算法
2024-06-02 02:44:08
C语言实现AES加解密算法
- AES加解密
AES加解密
#include <stdio.h>
#include <stdint.h>
#include <memory.h>
/****************************************************************************************************************/
typedef enum {AES_CYPHER_128,AES_CYPHER_192,AES_CYPHER_256,
} AES_CYPHER_T;
/****************************************************************************************************************/
/*
* Encryption Rounds
*/
int g_aes_key_bits[] = {/* AES_CYPHER_128 */ 128,/* AES_CYPHER_192 */ 192,/* AES_CYPHER_256 */ 256,
};
int g_aes_rounds[] = {/* AES_CYPHER_128 */ 10,/* AES_CYPHER_192 */ 12,/* AES_CYPHER_256 */ 14,
};
int g_aes_nk[] = {/* AES_CYPHER_128 */ 4,/* AES_CYPHER_192 */ 6,/* AES_CYPHER_256 */ 8,
};
int g_aes_nb[] = {/* AES_CYPHER_128 */ 4,/* AES_CYPHER_192 */ 4,/* AES_CYPHER_256 */ 4,
};
/****************************************************************************************************************/
/*
* aes Rcon:
*
* WARNING: Rcon is designed starting from 1 to 15, not 0 to 14.
* FIPS-197 Page 9: "note that i starts at 1, not 0"
*
* i | 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14
* -----+------------------------------------------------------------------------------------------
* | [01] [02] [04] [08] [10] [20] [40] [80] [1b] [36] [6c] [d8] [ab] [4d] [9a]
* RCON | [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00]
* | [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00]
* | [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00] [00]
*/
static const uint32_t g_aes_rcon[] = {0x01000000, 0x02000000, 0x04000000, 0x08000000, 0x10000000, 0x20000000, 0x40000000, 0x80000000,0x1b000000, 0x36000000, 0x6c000000, 0xd8000000, 0xab000000, 0xed000000, 0x9a000000
};
/****************************************************************************************************************/
/*
* aes sbox and invert-sbox
*/
static const uint8_t g_aes_sbox[256] = {/* 0 1 2 3 4 5 6 7 8 9 A B C D E F */0x63, 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
};
static const uint8_t g_inv_sbox[256] = {/* 0 1 2 3 4 5 6 7 8 9 A B C D E F */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
};
/****************************************************************************************************************/
uint8_t aes_sub_sbox(uint8_t val)
{return g_aes_sbox[val];
}
/****************************************************************************************************************/
uint32_t aes_sub_dword(uint32_t val)
{uint32_t tmp = 0;tmp |= ((uint32_t)aes_sub_sbox((uint8_t)((val >> 0) & 0xFF))) << 0;tmp |= ((uint32_t)aes_sub_sbox((uint8_t)((val >> 8) & 0xFF))) << 8;tmp |= ((uint32_t)aes_sub_sbox((uint8_t)((val >> 16) & 0xFF))) << 16;tmp |= ((uint32_t)aes_sub_sbox((uint8_t)((val >> 24) & 0xFF))) << 24;return tmp;
}
/****************************************************************************************************************/
uint32_t aes_rot_dword(uint32_t val)
{uint32_t tmp = val;return (val >> 8) | ((tmp & 0xFF) << 24);
}
/****************************************************************************************************************/
uint32_t aes_swap_dword(uint32_t val)
{return (((val & 0x000000FF) << 24) |((val & 0x0000FF00) << 8) |((val & 0x00FF0000) >> 8) |((val & 0xFF000000) >> 24));
}
/****************************************************************************************************************/
/*
* nr: number of rounds
* nb: number of columns comprising the state, nb = 4 dwords (16 bytes)
* nk: number of 32-bit words comprising cipher key, nk = 4, 6, 8 (KeyLength/(4*8))
*/
void aes_key_expansion(AES_CYPHER_T mode, uint8_t *key, uint8_t *round)
{uint32_t *w = (uint32_t *)round;uint32_t t;int i = 0;do {w[i] = *((uint32_t *)&key[i * 4 + 0]);} while (++i < g_aes_nk[mode]);do {if ((i % g_aes_nk[mode]) == 0) {t = aes_rot_dword(w[i - 1]);t = aes_sub_dword(t);t = t ^ aes_swap_dword(g_aes_rcon[i / g_aes_nk[mode] - 1]);}else if (g_aes_nk[mode] > 6 && (i % g_aes_nk[mode]) == 4) {t = aes_sub_dword(w[i - 1]);}else {t = w[i - 1];}w[i] = w[i - g_aes_nk[mode]] ^ t;} while (++i < g_aes_nb[mode] * (g_aes_rounds[mode] + 1));
}
/****************************************************************************************************************/
void aes_add_round_key(AES_CYPHER_T mode, uint8_t *state,uint8_t *round, int nr)
{uint32_t *w = (uint32_t *)round;uint32_t *s = (uint32_t *)state;int i;for (i = 0; i < g_aes_nb[mode]; i++) {s[i] ^= w[nr * g_aes_nb[mode] + i];}
}
/****************************************************************************************************************/
void aes_sub_bytes(AES_CYPHER_T mode, uint8_t *state)
{int i, j;for (i = 0; i < g_aes_nb[mode]; i++) {for (j = 0; j < 4; j++) {state[i * 4 + j] = aes_sub_sbox(state[i * 4 + j]);}}
}
/****************************************************************************************************************/
void aes_shift_rows(AES_CYPHER_T mode, uint8_t *state)
{uint8_t *s = (uint8_t *)state;int i, j, r;for (i = 1; i < g_aes_nb[mode]; i++) {for (j = 0; j < i; j++) {uint8_t tmp = s[i];for (r = 0; r < g_aes_nb[mode]; r++) {s[i + r * 4] = s[i + (r + 1) * 4];}s[i + (g_aes_nb[mode] - 1) * 4] = tmp;}}
}
/****************************************************************************************************************/
uint8_t aes_xtime(uint8_t x)
{return ((x << 1) ^ (((x >> 7) & 1) * 0x1b));
}
/****************************************************************************************************************/
uint8_t aes_xtimes(uint8_t x, int ts)
{while (ts-- > 0) {x = aes_xtime(x);}return x;
}
/****************************************************************************************************************/
uint8_t aes_mul(uint8_t x, uint8_t y)
{/** encrypt: y has only 2 bits: can be 1, 2 or 3* decrypt: y could be any value of 9, b, d, or e*/return ((((y >> 0) & 1) * aes_xtimes(x, 0)) ^(((y >> 1) & 1) * aes_xtimes(x, 1)) ^(((y >> 2) & 1) * aes_xtimes(x, 2)) ^(((y >> 3) & 1) * aes_xtimes(x, 3)) ^(((y >> 4) & 1) * aes_xtimes(x, 4)) ^(((y >> 5) & 1) * aes_xtimes(x, 5)) ^(((y >> 6) & 1) * aes_xtimes(x, 6)) ^(((y >> 7) & 1) * aes_xtimes(x, 7)));
}
/****************************************************************************************************************/
void aes_mix_columns(AES_CYPHER_T mode, uint8_t *state)
{uint8_t y[16] = { 2, 3, 1, 1, 1, 2, 3, 1, 1, 1, 2, 3, 3, 1, 1, 2 };uint8_t s[4];int i, j, r;for (i = 0; i < g_aes_nb[mode]; i++) {for (r = 0; r < 4; r++) {s[r] = 0;for (j = 0; j < 4; j++) {s[r] = s[r] ^ aes_mul(state[i * 4 + j], y[r * 4 + j]);}}for (r = 0; r < 4; r++) {state[i * 4 + r] = s[r];}}
}
/****************************************************************************************************************/
int aes_encrypt(AES_CYPHER_T mode, uint8_t *data, int len, uint8_t *key)
{uint8_t w[4 * 4 * 15] = { 0 }; /* round key */uint8_t s[4 * 4] = { 0 }; /* state */int nr, i, j;/* key expansion */aes_key_expansion(mode, key, w);/* start data cypher loop over input buffer */for (i = 0; i < len; i += 4 * g_aes_nb[mode]) {/* init state from user buffer (plaintext) */for (j = 0; j < 4 * g_aes_nb[mode]; j++)s[j] = data[i + j];/* start AES cypher loop over all AES rounds */for (nr = 0; nr <= g_aes_rounds[mode]; nr++) {if (nr > 0) {/* do SubBytes */aes_sub_bytes(mode, s);/* do ShiftRows */aes_shift_rows(mode, s);if (nr < g_aes_rounds[mode]) {/* do MixColumns */aes_mix_columns(mode, s);}}/* do AddRoundKey */aes_add_round_key(mode, s, w, nr);}/* save state (cypher) to user buffer */for (j = 0; j < 4 * g_aes_nb[mode]; j++)data[i + j] = s[j];}return 0;
}
/****************************************************************************************************************/
int aes_encrypt_ecb(AES_CYPHER_T mode, uint8_t *data, int len, uint8_t *key)
{return aes_encrypt(mode, data, len, key);
}
/****************************************************************************************************************/
int aes_encrypt_cbc(AES_CYPHER_T mode, uint8_t *data, int len, uint8_t *key, uint8_t *iv)
{uint8_t w[4 * 4 * 15] = { 0 }; /* round key */uint8_t s[4 * 4] = { 0 }; /* state */uint8_t v[4 * 4] = { 0 }; /* iv */int nr, i, j;/* key expansion */aes_key_expansion(mode, key, w);memcpy(v, iv, sizeof(v));/* start data cypher loop over input buffer */for (i = 0; i < len; i += 4 * g_aes_nb[mode]) {/* init state from user buffer (plaintext) */for (j = 0; j < 4 * g_aes_nb[mode]; j++)s[j] = data[i + j] ^ v[j];/* start AES cypher loop over all AES rounds */for (nr = 0; nr <= g_aes_rounds[mode]; nr++) {if (nr > 0) {/* do SubBytes */aes_sub_bytes(mode, s);/* do ShiftRows */aes_shift_rows(mode, s);if (nr < g_aes_rounds[mode]) {/* do MixColumns */aes_mix_columns(mode, s);}}/* do AddRoundKey */aes_add_round_key(mode, s, w, nr);}/* save state (cypher) to user buffer */for (j = 0; j < 4 * g_aes_nb[mode]; j++)data[i + j] = v[j] = s[j];}return 0;
}
/****************************************************************************************************************/
void inv_shift_rows(AES_CYPHER_T mode, uint8_t *state)
{uint8_t *s = (uint8_t *)state;int i, j, r;for (i = 1; i < g_aes_nb[mode]; i++) {for (j = 0; j < g_aes_nb[mode] - i; j++) {uint8_t tmp = s[i];for (r = 0; r < g_aes_nb[mode]; r++) {s[i + r * 4] = s[i + (r + 1) * 4];}s[i + (g_aes_nb[mode] - 1) * 4] = tmp;}}
}
/****************************************************************************************************************/
uint8_t inv_sub_sbox(uint8_t val)
{return g_inv_sbox[val];
}
/****************************************************************************************************************/
void inv_sub_bytes(AES_CYPHER_T mode, uint8_t *state)
{int i, j;for (i = 0; i < g_aes_nb[mode]; i++) {for (j = 0; j < 4; j++) {state[i * 4 + j] = inv_sub_sbox(state[i * 4 + j]);}}
}
/****************************************************************************************************************/
void inv_mix_columns(AES_CYPHER_T mode, uint8_t *state)
{uint8_t y[16] = { 0x0e, 0x0b, 0x0d, 0x09, 0x09, 0x0e, 0x0b, 0x0d,0x0d, 0x09, 0x0e, 0x0b, 0x0b, 0x0d, 0x09, 0x0e };uint8_t s[4];int i, j, r;for (i = 0; i < g_aes_nb[mode]; i++) {for (r = 0; r < 4; r++) {s[r] = 0;for (j = 0; j < 4; j++) {s[r] = s[r] ^ aes_mul(state[i * 4 + j], y[r * 4 + j]);}}for (r = 0; r < 4; r++) {state[i * 4 + r] = s[r];}}
}
/****************************************************************************************************************/
int aes_decrypt(AES_CYPHER_T mode, uint8_t *data, int len, uint8_t *key)
{uint8_t w[4 * 4 * 15] = { 0 }; /* round key */uint8_t s[4 * 4] = { 0 }; /* state */int nr, i, j;/* key expansion */aes_key_expansion(mode, key, w);/* start data cypher loop over input buffer */for (i = 0; i < len; i += 4 * g_aes_nb[mode]) {/* init state from user buffer (cyphertext) */for (j = 0; j < 4 * g_aes_nb[mode]; j++)s[j] = data[i + j];/* start AES cypher loop over all AES rounds */for (nr = g_aes_rounds[mode]; nr >= 0; nr--) {/* do AddRoundKey */aes_add_round_key(mode, s, w, nr);if (nr > 0) {if (nr < g_aes_rounds[mode]) {/* do MixColumns */inv_mix_columns(mode, s);}/* do ShiftRows */inv_shift_rows(mode, s);/* do SubBytes */inv_sub_bytes(mode, s);}}/* save state (cypher) to user buffer */for (j = 0; j < 4 * g_aes_nb[mode]; j++)data[i + j] = s[j];}return 0;
}
/****************************************************************************************************************/
int aes_decrypt_ecb(AES_CYPHER_T mode, uint8_t *data, int len, uint8_t *key)
{return aes_decrypt(mode, data, len, key);
}
/****************************************************************************************************************/
int aes_decrypt_cbc(AES_CYPHER_T mode, uint8_t *data, int len, uint8_t *key, uint8_t *iv)
{uint8_t w[4 * 4 * 15] = { 0 }; /* round key */uint8_t s[4 * 4] = { 0 }; /* state */uint8_t v[4 * 4] = { 0 }; /* iv */int nr, i, j;/* key expansion */aes_key_expansion(mode, key, w);memcpy(v, iv, sizeof(v));/* start data cypher loop over input buffer */for (i = 0; i < len; i += 4 * g_aes_nb[mode]) {/* init state from user buffer (cyphertext) */for (j = 0; j < 4 * g_aes_nb[mode]; j++)s[j] = data[i + j];/* start AES cypher loop over all AES rounds */for (nr = g_aes_rounds[mode]; nr >= 0; nr--) {/* do AddRoundKey */aes_add_round_key(mode, s, w, nr);if (nr > 0) {if (nr < g_aes_rounds[mode]) {/* do MixColumns */inv_mix_columns(mode, s);}/* do ShiftRows */inv_shift_rows(mode, s);/* do SubBytes */inv_sub_bytes(mode, s);}}/* save state (cypher) to user buffer */for (j = 0; j < 4 * g_aes_nb[mode]; j++) {uint8_t p = s[j] ^ v[j];v[j] = data[i + j];data[i + j] = p;}}return 0;
}
/****************************************************************************************************************/
void aes_cypher_128_test()
{#if 1uint8_t buf[] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };uint8_t key[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f };
#elseuint8_t buf[] = { 0x32, 0x43, 0xf6, 0xa8, 0x88, 0x5a, 0x30, 0x8d,0x31, 0x31, 0x98, 0xa2, 0xe0, 0x37, 0x07, 0x34 };uint8_t key[] = { 0x2b, 0x7e, 0x15, 0x16, 0x28, 0xae, 0xd2, 0xa6,0xab, 0xf7, 0x15, 0x88, 0x09, 0xcf, 0x4f, 0x3c };
#endifaes_encrypt(AES_CYPHER_128, buf, sizeof(buf), key);aes_decrypt(AES_CYPHER_128, buf, sizeof(buf), key);
}
/****************************************************************************************************************/
void aes_cypher_192_test()
{uint8_t buf[] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };uint8_t key[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17 };aes_encrypt(AES_CYPHER_192, buf, sizeof(buf), key);aes_decrypt(AES_CYPHER_192, buf, sizeof(buf), key);
}
/****************************************************************************************************************/
void aes_cypher_256_test()
{uint8_t buf[] = { 0x00, 0x11, 0x22, 0x33, 0x44, 0x55, 0x66, 0x77,0x88, 0x99, 0xaa, 0xbb, 0xcc, 0xdd, 0xee, 0xff };uint8_t key[] = { 0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f };aes_encrypt(AES_CYPHER_256, buf, sizeof(buf), key);aes_decrypt(AES_CYPHER_256, buf, sizeof(buf), key);
}
/****************************************************************************************************************/
void main()
{//数据uint8_t buf[] = { 78, 204, 144, 217, 57, 62, 169, 79, 165, 219, 206, 216, 180, 137, 206, 138 };//密钥uint8_t key[] = { 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112 };//向量//uint8_t iv[] = {};switch (sizeof(key)){//ECBcase 16:aes_decrypt(AES_CYPHER_128, buf, sizeof(buf), key); break;case 24:aes_decrypt(AES_CYPHER_192, buf, sizeof(buf), key); break;case 32:aes_decrypt(AES_CYPHER_256, buf, sizeof(buf), key); break;//CBC/*case 16:aes_decrypt_cbc(AES_CYPHER_128, buf, sizeof(buf), key, iv); break;case 24:aes_decrypt_cbc(AES_CYPHER_192, buf, sizeof(buf), key, iv); break;case 32:aes_decrypt_cbc(AES_CYPHER_256, buf, sizeof(buf), key, iv); break;*/}for (int i = 0; i < sizeof(buf); i++){printf("%c", buf[i] & 0xFF);}printf("\n");return;
}
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