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2019年12月20日 | 单片机DES加解密源程序,参数带入密钥就能加密解密了
2019-12-20 来源：51hei
单片机的DES加解密程序，参数带入密钥就能加密解密了，注意密钥，原 始数据和加密产生的数据都是8个字节的。
单片机源程序如下：
#include //密钥: B4 31 5B 86 9D 7D FA A2 //数据: 1F AD 61 A5 F7 19 77 14 //DES加密结果:4C 78 E9 1A F2 DA 9C D3 const uint8_t initial_tr[64] = { 57, 49, 41, 33, 25, 17, 9, 1, 59, 51, 43, 35, 27, 19, 11, 3, 61, 53, 45, 37, 29, 21, 13, 5, 63, 55, 47, 39, 31, 23, 15, 7, 56, 48, 40, 32, 24, 16, 8, 0, 58, 50, 42, 34, 26, 18, 10, 2, 60, 52, 44, 36, 28, 20, 12, 4, 62, 54, 46, 38, 30, 22, 14, 6 }; const uint8_t final_tr[64] = { 39, 7, 47, 15, 55, 23, 63, 31, 38, 6, 46, 14, 54, 22, 62, 30, 37, 5, 45, 13, 53, 21, 61, 29, 36, 4, 44, 12, 52, 20, 60, 28, 35, 3, 43, 11, 51, 19, 59, 27, 34, 2, 42, 10, 50, 18, 58, 26, 33, 1, 41, 9, 49, 17, 57, 25, 32, 0, 40, 8, 48, 16, 56, 24 }; const uint8_t swap[64] = { 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32 }; const uint8_t key_tr1[56] = { 56, 48, 40, 32, 24, 16, 8, 0, 57, 49, 41, 33, 25, 17, 9, 1, 58, 50, 42, 34, 26, 18, 10, 2, 59, 51, 43, 35, 62, 54, 46, 38, 30, 22, 14, 6, 61, 53, 45, 37, 29, 21, 13, 5, 60, 52, 44, 36, 28, 20, 12, 4, 27, 19, 11, 3 }; const uint8_t key_tr2[64] = { 0, 0, 13, 4, 16, 10, 23, 0, 0, 0, 2, 9, 27, 14, 5, 20, 0, 0, 22, 7, 18, 11, 3, 25, 0, 0, 15, 1, 6, 26, 19, 12, 0, 0, 40, 54, 51, 30, 36, 46, 0, 0, 29, 47, 39, 50, 44, 32, 0, 0, 43, 52, 48, 38, 55, 33, 0, 0, 45, 31, 41, 49, 35, 28 }; const uint8_t etr[64] = { 0, 0, 31, 4, 0, 1, 2, 3, 0, 0, 3, 8, 4, 5, 6, 7, 0, 0, 7, 12, 8, 9, 10, 11, 0, 0, 11, 16, 12, 13, 14, 15, 0, 0, 15, 20, 16, 17, 18, 19, 0, 0, 19, 24, 20, 21, 22, 23, 0, 0, 23, 28, 24, 25, 26, 27, 0, 0, 27, 0, 28, 29, 30, 31 }; const uint8_t ptr[32] = { 31, 14, 39, 44, 60, 23, 55, 36, 4, 30, 46, 53, 12, 37, 62, 21, 5, 15, 47, 29, 63, 54, 6, 20, 38, 28, 61, 13, 45, 22, 7, 52 }; const uint8_t s[8][64] = { { 14, 4, 13, 1, 2, 15, 11, 8, 3, 10, 6, 12, 5, 9, 0, 7, 0, 15, 7, 4, 14, 2, 13, 1, 10, 6, 12, 11, 9, 5, 3, 8, 4, 1, 14, 8, 13, 6, 2, 11, 15, 12, 9, 7, 3, 10, 5, 0, 15, 12, 8, 2, 4, 9, 1, 7, 5, 11, 3, 14, 10, 0, 6, 13 }, { 15, 1, 8, 14, 6, 11, 3, 4, 9, 7, 2, 13, 12, 0, 5, 10, 3, 13, 4, 7, 15, 2, 8, 14, 12, 0, 1, 10, 6, 9, 11, 5, 0, 14, 7, 11, 10, 4, 13, 1, 5, 8, 12, 6, 9, 3, 2, 15, 13, 8, 10, 1, 3, 15, 4, 2, 11, 6, 7, 12, 0, 5, 14, 9 }, { 10, 0, 9, 14, 6, 3, 15, 5, 1, 13, 12, 7, 11, 4, 2, 8, 13, 7, 0, 9, 3, 4, 6, 10, 2, 8, 5, 14, 12, 11, 15, 1, 13, 6, 4, 9, 8, 15, 3, 0, 11, 1, 2, 12, 5, 10, 14, 7, 1, 10, 13, 0, 6, 9, 8, 7, 4, 15, 14, 3, 11, 5, 2, 12 }, { 7, 13, 14, 3, 0, 6, 9, 10, 1, 2, 8, 5, 11, 12, 4, 15, 13, 8, 11, 5, 6, 15, 0, 3, 4, 7, 2, 12, 1, 10, 14, 9, 10, 6, 9, 0, 12, 11, 7, 13, 15, 1, 3, 14, 5, 2, 8, 4, 3, 15, 0, 6, 10, 1, 13, 8, 9, 4, 5, 11, 12, 7, 2, 14 }, { 2, 12, 4, 1, 7, 10, 11, 6, 8, 5, 3, 15, 13, 0, 14, 9, 14, 11, 2, 12, 4, 7, 13, 1, 5, 0, 15, 10, 3, 9, 8, 6, 4, 2, 1, 11, 10, 13, 7, 8, 15, 9, 12, 5, 6, 3, 0, 14, 11, 8, 12, 7, 1, 14, 2, 13, 6, 15, 0, 9, 10, 4, 5, 3 }, { 12, 1, 10, 15, 9, 2, 6, 8, 0, 13, 3, 4, 14, 7, 5, 11, 10, 15, 4, 2, 7, 12, 9, 5, 6, 1, 13, 14, 0, 11, 3, 8, 9, 14, 15, 5, 2, 8, 12, 3, 7, 0, 4, 10, 1, 13, 11, 6, 4, 3, 2, 12, 9, 5, 15, 10, 11, 14, 1, 7, 6, 0, 8, 13 }, { 4, 11, 2, 14, 15, 0, 8, 13, 3, 12, 9, 7, 5, 10, 6, 1, 13, 0, 11, 7, 4, 9, 1, 10, 14, 3, 5, 12, 2, 15, 8, 6, 1, 4, 11, 13, 12, 3, 7, 14, 10, 15, 6, 8, 0, 5, 9, 2, 6, 11, 13, 8, 1, 4, 10, 7, 9, 5, 0, 15, 14, 2, 3, 12 }, { 13, 2, 8, 4, 6, 15, 11, 1, 10, 9, 3, 14, 5, 0, 12, 7, 1, 15, 13, 8, 10, 3, 7, 4, 12, 5, 6, 11, 0, 14, 9, 2, 7, 11, 4, 1, 9, 12, 14, 2, 0, 6, 10, 13, 15, 3, 5, 8, 2, 1, 14, 7, 4, 10, 8, 13, 15, 12, 9, 0, 3, 5, 6, 11 } }; const uint8_t rots[16] = { 1, 1, 2, 2, 2, 2, 2, 2, 1, 2, 2, 2, 2, 2, 2, 1 }; const uint8_t bit_msk[8] = { 0x80, 0x40, 0x20, 0x10, 0x08, 0x04, 0x02, 0x01 }; uint8_t DES_Encrypt_key[8]; uint8_t DES_Decrypt_key[8]; uint8_t sub_keys[16][8]; //sub_keys[16][8] uint8_t main_key[8]; void des(uint8_t*, uint8_t*, uint8_t, uint8_t*); void FLASH_Read_KEYS(uint8_t key_index); static void transpose (uint8_t*, uint8_t*, const uint8_t*, uint8_t); static void rotate_l (uint8_t*); static void compute_subkeys (uint8_t*); static void f (uint8_t*, uint8_t*, uint8_t*); /************************************************************************/ /* */ /* Module title: des */ /* Module type: des mainrutine */ /* */ /* Author: YXH */ /* Date: 2012-07-13 */ /* */ /* Last changed by: YXH */ /* Date: 2012-07-13 */ /* */ /* Functional Description: Encipher and decipher 64 bits string */
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