AES 是块加密，块的长度是 16 个字节，如果原文不到 16 个字节，则需要填充至 16 个字节后再进行处理。
AES 密文长度 = (原文长度 / 16) * 16 + 16

这里的“/”表示整除

#ifndef __AES_H
#define __AES_H#ifdef __cplusplusextern "C" {
#endif// ÒÔbitΪµ¥Î»µÄÃÜÔ¿³¤¶È£¬Ö»ÄÜΪ 128£¬192 ºÍ 256 ÈýÖÖ
#define AES_KEY_LENGTH  128// ¼Ó½âÃÜģʽ
#define AES_MODE_ECB    0               // µç×ÓÃÜÂ뱾ģʽ£¨Ò»°ãģʽ£©
#define AES_MODE_CBC    1               // ÃÜÂë·Ö×éÁ´½Óģʽ
#define AES_MODE        AES_MODE_CBC///
//  º¯ÊýÃû£º    AES_Init
//  ÃèÊö£º      ³õʼ»¯£¬ÔÚ´ËÖ´ÐÐÀ©Õ¹ÃÜÔ¿²Ù×÷¡£
//  ÊäÈë²ÎÊý£º  pKey -- ԭʼÃÜÔ¿£¬Æ䳤¶È±ØÐëΪ AES_KEY_LENGTH/8 ×Ö½Ú¡£
//  Êä³ö²ÎÊý£º  ÎÞ¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
///
void AES_Init(const void *pKey);
//
//  º¯ÊýÃû£º    AES_Encrypt
//  ÃèÊö£º      ¼ÓÃÜÊý¾Ý
//  ÊäÈë²ÎÊý£º  pPlainText  -- Ã÷ÎÄ£¬¼´Ðè¼ÓÃܵÄÊý¾Ý£¬Æ䳤¶ÈΪnDataLen×Ö½Ú¡£
//              nDataLen    -- Êý¾Ý³¤¶È£¬ÒÔ×Ö½ÚΪµ¥Î»£¬±ØÐëΪAES_KEY_LENGTH/8µÄÕû±¶Êý¡£
//              pIV         -- ³õʼ»¯ÏòÁ¿£¬Èç¹ûʹÓÃECBģʽ£¬¿ÉÉèΪNULL¡£
//  Êä³ö²ÎÊý£º  pCipherText -- ÃÜÎÄ£¬¼´ÓÉÃ÷ÎļÓÃܺóµÄÊý¾Ý£¬¿ÉÒÔÓëpPlainTextÏàͬ¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
//
void  AES_Encrypt(const unsigned char *pPlainText, unsigned char *pCipherText, unsigned int nDataLen, const unsigned char *pIV);
//
//  º¯ÊýÃû£º    AES_Decrypt
//  ÃèÊö£º      ½âÃÜÊý¾Ý
//  ÊäÈë²ÎÊý£º  pCipherText -- ÃÜÎÄ£¬¼´Ðè½âÃܵÄÊý¾Ý£¬Æ䳤¶ÈΪnDataLen×Ö½Ú¡£
//              nDataLen    -- Êý¾Ý³¤¶È£¬ÒÔ×Ö½ÚΪµ¥Î»£¬±ØÐëΪAES_KEY_LENGTH/8µÄÕû±¶Êý¡£
//              pIV         -- ³õʼ»¯ÏòÁ¿£¬Èç¹ûʹÓÃECBģʽ£¬¿ÉÉèΪNULL¡£
//  Êä³ö²ÎÊý£º  pPlainText  -- Ã÷ÎÄ£¬¼´ÓÉÃÜÎĽâÃܺóµÄÊý¾Ý£¬¿ÉÒÔÓëpCipherTextÏàͬ¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
//
void AES_Decrypt(unsigned char *pPlainText, const unsigned char *pCipherText, unsigned int nDataLen, const unsigned char *pIV);
//¶ÔÊý¾Ý½øÐнâÃܲÙ×÷£¬³É¹¦·µ»Ø1£¬Ê§°Ü·µ»Ø0
unsigned char app_data_encode_aes(char *input, char *output, unsigned short *slen);
unsigned char app_data_decode_aes(unsigned char *input, char *output, unsigned short *slen);
unsigned int  AES_Encrypt_PKCS7(const unsigned char *pPlainText, unsigned char *pCipherText,
unsigned int  nDataLen, const unsigned char *pIV);
unsigned int  AES_get_length(unsigned int length);
void AES_free(unsigned char* p);
#ifdef __cplusplus}
#endif#endif    // __AES_H

#include "aes.h"
//#include "malloc.h"
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdio.h>// ΪÁËÄÜÕë¶ÔC51½øÐÐÓÅ»¯£¬²¢ÇÒÓÖʹ´úÂë¿ÉÓÃÓÚARMºÍPCµÈ»·¾³£¬
// ÔÚ·ÇC51»·¾³£¨Ã»Óж¨Òå__C51__£©ÏÂÐèÒª°ÑC51Ìض¨µÄ¹Ø¼ü×Ö¶¨ÒåΪ¿Õ
#ifndef __C51__#define code#define data#define idata#define xdata#define pdatatypedef unsigned char BOOL;
#elsetypedef bit BOOL;
#endif#define Nk    (AES_KEY_LENGTH / 32)       // ÒÔ¡°×Ö¡±£¨4×Ö½Ú£©Îªµ¥Î»µÄÃÜÔ¿³¤¶È
#define Nb  4                           // ÒÔ¡°×Ö¡±£¨4×Ö½Ú£©Îªµ¥Î»µÄ¼Ó½âÃÜÊý¾Ý¿é´óС£¬¹Ì¶¨Îª4// Nr£º¼ÓÃܵÄÂÖÊý
#if   AES_KEY_LENGTH == 128#define Nr 10
#elif AES_KEY_LENGTH == 192#define Nr 12
#elif AES_KEY_LENGTH == 256#define Nr 14
#else#error AES_KEY_LENGTH must be 128, 192 or 256 BOOLs!
#endif// GF(28) ¶àÏîʽ
#define BPOLY 0x1B // Lower 8 BOOLs of (x^8 + x^4 + x^3 + x + 1), ie. (x^4 + x^3 + x + 1).// AES×ÓÃÜÔ¿±í£¬µ±ÃÜÔ¿³¤¶ÈΪ128λʱ£¬Õ¼ÓÃ176×Ö½Ú¿Õ¼ä
static xdata unsigned char g_roundKeyTable[4*Nb*(Nr+1)];
// ¼ÓÃÜÓõÄSBox
static code const unsigned char SBox[256] =
{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
};// ½âÃÜÓõÄSBox
static code const unsigned char InvSBox[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
};///
//  º¯ÊýÃû£º    RotationWord
//  ÃèÊö£º      ¶ÔÒ»¸ö¡°×Ö¡±Êý¾Ý½øÐÐÑ­»·ÓÒÒÆ¡£
//  ÊäÈë²ÎÊý£º  pWord -- ÒªÓÒÒƵÄ4×Ö½ÚÊý¾Ý¡£
//  Êä³ö²ÎÊý£º  pWord -- ÓÒÒƺóµÄ4×Ö½ÚÊý¾Ý¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
///
static void RotationWord(unsigned char *pWord)
{unsigned char temp = pWord[0];pWord[0]  = pWord[1];pWord[1]  = pWord[2];pWord[2]  = pWord[3];pWord[3]  = temp;
}///
//  º¯ÊýÃû£º    XorBytes
//  ÃèÊö£º      ÅúÁ¿Òì»òÁ½×éÊý¾Ý¡£
//  ÊäÈë²ÎÊý£º  pData1 -- ÒªÒì»òµÄµÚÒ»×éÊý¾Ý¡£
//              pData1 -- ÒªÒì»òµÄµÚ¶þ×éÊý¾Ý¡£
//              nCount -- ÒªÒì»òµÄÊý¾Ý³¤¶È¡£
//  Êä³ö²ÎÊý£º  pData1 -- Òì»òºóµÄ½á¹û¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
///
static void XorBytes(unsigned char *pData1, const unsigned char *pData2, unsigned char nCount)
{unsigned char i;for (i = 0; i < nCount; i++){pData1[i] ^= pData2[i];}
}
///
//  º¯ÊýÃû£º    AddRoundKey
//  ÃèÊö£º      °Ñ Öмä״̬Êý¾Ý ¼ÓÉÏ£¨Òì»ò£©×ÓÃÜÔ¿£¬Êý¾Ý³¤¶ÈΪ16×Ö½Ú¡£
//  ÊäÈë²ÎÊý£º  pState    -- ״̬Êý¾Ý¡£
//              pRoundKey -- ×ÓÃÜÔ¿Êý¾Ý¡£
//  Êä³ö²ÎÊý£º  pState    -- ¼ÓÉÏ×ÓÃÜÔ¿ºóµÄ״̬Êý¾Ý¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
///
// static void AddRoundKey(unsigned char *pState, const unsigned char *pRoundKey)
// {
//  XorBytes(pState, pRoundKey, 4*Nb);
// }// AddRoundKeyµÄºêÐÎʽ£¬±Èº¯ÊýÐÎʽ¿ÉÒÔ½ÚÊ¡4×Ö½ÚµÄdataÊý¾Ý
#define AddRoundKey(pState, pRoundKey) \XorBytes((pState), (pRoundKey), 4*Nb)///
//  º¯ÊýÃû£º    SubBytes
//  ÃèÊö£º      ͨ¹ýSºÐ×ÓÖû»×´Ì¬Êý¾Ý¡£
//  ÊäÈë²ÎÊý£º  pState  -- ״̬Êý¾Ý¡£
//              nCount  -- ״̬Êý¾Ý³¤¶È¡£
//              bInvert -- ÊÇ·ñʹÓ÷´ÏòSºÐ×Ó£¨½âÃÜʱʹÓã©¡£
//  Êä³ö²ÎÊý£º  pState  -- Öû»ºóµÄ״̬Êý¾Ý¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
///
static void SubBytes(unsigned char *pState, unsigned char nCount, BOOL bInvert)
{unsigned char i;const unsigned char code *pSBox = bInvert ? InvSBox : SBox;for (i = 0; i < nCount; i++){pState[i] = pSBox[pState[i]];}
}
///
//  º¯ÊýÃû£º    ShiftRows
//  ÃèÊö£º      °Ñ״̬Êý¾ÝÒÆÐС£
//  ÊäÈë²ÎÊý£º  pState  -- ״̬Êý¾Ý¡£
//              bInvert -- ÊÇ·ñ·´ÏòÒÆÐУ¨½âÃÜʱʹÓã©¡£
//  Êä³ö²ÎÊý£º  pState  -- ÒÆÐкóµÄ״̬Êý¾Ý¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
///
static void ShiftRows(unsigned char *pState, BOOL bInvert)
{// ×¢Ò⣺״̬Êý¾ÝÒÔÁÐÐÎʽ´æ·Å£¡unsigned char r;    // row£¬   ÐÐunsigned char c;   // column£¬ÁÐunsigned char temp;unsigned char rowData[4];for (r = 1; r < 4; r++){// ±¸·ÝÒ»ÐÐÊý¾Ýfor (c = 0; c < 4; c++){rowData[c] = pState[r + 4*c];}temp = bInvert ? (4 - r) : r;for (c = 0; c < 4; c++){pState[r + 4*c] = rowData[(c + temp) % 4];}}
}
///
//  º¯ÊýÃû£º    GfMultBy02
//  ÃèÊö£º      ÔÚGF(28)ÓòµÄ ³Ë2 ÔËËã¡£
//  ÊäÈë²ÎÊý£º  num -- ³ËÊý¡£
//  Êä³ö²ÎÊý£º  ÎÞ¡£
//  ·µ»ØÖµ£º    num³ËÒÔ2µÄ½á¹û¡£
///
static unsigned char GfMultBy02(unsigned char num)
{if ((num & 0x80) == 0){num = num << 1;}else{num = (num << 1) ^ BPOLY;}return num;
}///
//  º¯ÊýÃû£º    MixColumns
//  ÃèÊö£º      »ìºÏ״̬¸÷ÁÐÊý¾Ý¡£
//  ÊäÈë²ÎÊý£º  pState  -- ״̬Êý¾Ý¡£
//              bInvert -- ÊÇ·ñ·´Ïò»ìºÏ£¨½âÃÜʱʹÓã©¡£
//  Êä³ö²ÎÊý£º  pState  -- »ìºÏÁкóµÄ״̬Êý¾Ý¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
///
static void MixColumns(unsigned char *pState, BOOL bInvert)
{unsigned char i;unsigned char temp;unsigned char a0Pa2_M4; // 4(a0 + a2)unsigned char a1Pa3_M4;   // 4(a1 + a3)unsigned char result[4];for (i = 0; i < 4; i++, pState += 4){// b0 = 2a0 + 3a1 + a2 + a3 //    = (a0 + a1 + a2 + a3) + 2(a0 + a1) + a0temp = pState[0] ^ pState[1] ^ pState[2] ^ pState[3];   result[0] = temp ^ pState[0] ^ GfMultBy02((unsigned char) (pState[0] ^ pState[1]));result[1] = temp ^ pState[1] ^ GfMultBy02((unsigned char) (pState[1] ^ pState[2]));result[2] = temp ^ pState[2] ^ GfMultBy02((unsigned char) (pState[2] ^ pState[3]));result[3] = temp ^ pState[3] ^ GfMultBy02((unsigned char) (pState[3] ^ pState[0]));if (bInvert){// b0' = 14a0 + 11a1 + 13a2 + 9a3 //     = (a0 + a1 + a2 + a3) + 2(a0 + a1) + a0   £¨Õⲿ·ÖΪb0£©//       + 2(4(a0 + a2) + 4(a1 + a3))//       +   4(a0 + a2)a0Pa2_M4 = GfMultBy02(GfMultBy02((unsigned char) (pState[0] ^ pState[2])));a1Pa3_M4 = GfMultBy02(GfMultBy02((unsigned char) (pState[1] ^ pState[3])));temp     = GfMultBy02((unsigned char) (a0Pa2_M4 ^ a1Pa3_M4));result[0] ^= temp ^ a0Pa2_M4;result[1] ^= temp ^ a1Pa3_M4;result[2] ^= temp ^ a0Pa2_M4;result[3] ^= temp ^ a1Pa3_M4;}memcpy(pState, result, 4);}
}///
//  º¯ÊýÃû£º    BlockEncrypt
//  ÃèÊö£º      ¶Ôµ¥¿éÊý¾Ý¼ÓÃÜ¡£
//  ÊäÈë²ÎÊý£º  pState -- ״̬Êý¾Ý¡£
//  Êä³ö²ÎÊý£º  pState -- ¼ÓÃܺóµÄ״̬Êý¾Ý¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
///
static void BlockEncrypt(unsigned char *pState)
{unsigned char i;AddRoundKey(pState, g_roundKeyTable);for (i = 1; i <= Nr; i++)  // i = [1, Nr]{SubBytes(pState, 4*Nb, 0);ShiftRows(pState, 0);if (i != Nr){MixColumns(pState, 0);}AddRoundKey(pState, &g_roundKeyTable[4*Nb*i]);}// ΪÁ˽ÚÊ¡´úÂ룬ºÏ²¢µ½Ñ­»¯Ö´ÐÐ
//  SubBytes(pState, 4*Nb);
//  ShiftRows(pState, 0);
//  AddRoundKey(pState, &g_roundKeyTable[4*Nb*Nr]);
}
///
//  º¯ÊýÃû£º    BlockDecrypt
//  ÃèÊö£º      ¶Ôµ¥¿éÊý¾Ý½âÃÜ¡£
//  ÊäÈë²ÎÊý£º  pState -- ״̬Êý¾Ý¡£
//  Êä³ö²ÎÊý£º  pState -- ½âÃܺóµÄ״̬Êý¾Ý¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
///
static void BlockDecrypt(unsigned char *pState)
{unsigned char i;AddRoundKey(pState, &g_roundKeyTable[4*Nb*Nr]);for (i = Nr; i > 0; i--)    // i = [Nr, 1]{ShiftRows(pState, 1);SubBytes(pState, 4*Nb, 1);AddRoundKey(pState, &g_roundKeyTable[4*Nb*(i-1)]);if (i != 1){MixColumns(pState, 1);}}
}///
//  º¯ÊýÃû£º    AES_Init
//  ÃèÊö£º      ³õʼ»¯£¬ÔÚ´ËÖ´ÐÐÀ©Õ¹ÃÜÔ¿²Ù×÷¡£
//  ÊäÈë²ÎÊý£º  pKey -- ԭʼÃÜÔ¿£¬Æ䳤¶È±ØÐëΪ AES_KEY_LENGTH/8 ×Ö½Ú¡£
//  Êä³ö²ÎÊý£º  ÎÞ¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
///
void AES_Init(const void *pKey)
{// À©Õ¹ÃÜÔ¿unsigned char i;unsigned char *pRoundKey;unsigned char Rcon[4] = {0x01, 0x00, 0x00, 0x00};memcpy(g_roundKeyTable, pKey, 4*Nk);pRoundKey = &g_roundKeyTable[4*Nk];for (i = Nk; i < Nb*(Nr+1); pRoundKey += 4, i++){memcpy(pRoundKey, pRoundKey - 4, 4);if (i % Nk == 0){RotationWord(pRoundKey);SubBytes(pRoundKey, 4, 0);XorBytes(pRoundKey, Rcon, 4);Rcon[0] = GfMultBy02(Rcon[0]);}else if (Nk > 6 && i % Nk == Nb){SubBytes(pRoundKey, 4, 0);}XorBytes(pRoundKey, pRoundKey - 4*Nk, 4);}
}unsigned int AES_get_length(unsigned int length)
{return ((length>>4) + 1)<<4;
}//
//  º¯ÊýÃû£º    AES_Encrypt
//  ÃèÊö£º      ¼ÓÃÜÊý¾Ý
//  ÊäÈë²ÎÊý£º  pPlainText  -- Ã÷ÎÄ£¬¼´Ðè¼ÓÃܵÄÊý¾Ý£¬Æ䳤¶ÈΪnDataLen×Ö½Ú¡£
//              nDataLen    -- Êý¾Ý³¤¶È£¬ÒÔ×Ö½ÚΪµ¥Î»
//              pIV         -- ³õʼ»¯ÏòÁ¿£¬Èç¹ûʹÓÃECBģʽ£¬¿ÉÉèΪNULL¡£
//  Êä³ö²ÎÊý£º  pCipherText -- ÃÜÎÄ£¬¼´ÓÉÃ÷ÎļÓÃܺóµÄÊý¾Ý£¬¿ÉÒÔÓëpPlainTextÏàͬ¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
//
unsigned int AES_Encrypt_PKCS7(const unsigned char *pPlainText, unsigned char *pCipherText, unsigned int nDataLen, const unsigned char *pIV)
{unsigned int i;//³¤¶Èµ÷Õûunsigned int length = nDataLen;nDataLen = ((nDataLen>>4) + 1)<<4;uint8_t p=(Nb<<2)-(length%(Nb<<2));if (pPlainText != pCipherText){memcpy(pCipherText,pPlainText,length);}//Ìî³äunsigned char temp[16];memset(temp,p,16);if(length<nDataLen){memcpy(pCipherText + length,temp,nDataLen - length);}if(length == nDataLen){memcpy(pCipherText + length,temp,16);}for (i = nDataLen/(4*Nb); i > 0 ; i--, pCipherText += 4*Nb){#if AES_MODE == AES_MODE_CBCXorBytes(pCipherText, pIV, 4*Nb);#endifBlockEncrypt(pCipherText);pIV = pCipherText;}return(nDataLen);
}//
//  º¯ÊýÃû£º    AES_Decrypt
//  ÃèÊö£º      ½âÃÜÊý¾Ý
//  ÊäÈë²ÎÊý£º  pCipherText -- ÃÜÎÄ£¬¼´Ðè½âÃܵÄÊý¾Ý£¬Æ䳤¶ÈΪnDataLen×Ö½Ú¡£
//              nDataLen    -- Êý¾Ý³¤¶È£¬ÒÔ×Ö½ÚΪµ¥Î»£¬±ØÐëΪAES_KEY_LENGTH/8µÄÕû±¶Êý¡£
//              pIV         -- ³õʼ»¯ÏòÁ¿£¬Èç¹ûʹÓÃECBģʽ£¬¿ÉÉèΪNULL¡£
//  Êä³ö²ÎÊý£º  pPlainText  -- Ã÷ÎÄ£¬¼´ÓÉÃÜÎĽâÃܺóµÄÊý¾Ý£¬¿ÉÒÔÓëpCipherTextÏàͬ¡£
//  ·µ»ØÖµ£º    ÎÞ¡£
//
void AES_Decrypt(unsigned char *pPlainText, const unsigned char *pCipherText, unsigned int nDataLen, const unsigned char *pIV)
{unsigned int i;if (pPlainText != pCipherText){memcpy(pPlainText, pCipherText, nDataLen);}// ´Ó×îºóÒ»¿éÊý¾Ý¿ªÊ¼½âÃÜ£¬ÕâÑù²»Óÿª±Ù¿Õ¼äÀ´±£´æIVpPlainText += nDataLen - 4*Nb;for (i = nDataLen/(4*Nb); i > 0 ; i--, pPlainText -= 4*Nb){BlockDecrypt(pPlainText);#if AES_MODE == AES_MODE_CBCif (i == 1){// ×îºóÒ»¿éÊý¾ÝXorBytes(pPlainText, pIV, 4*Nb);}else{XorBytes(pPlainText, pPlainText - 4*Nb, 4*Nb);}#endif}
}

main函数测试：

void main(void)
{int r = 0,i; unsigned char Encrypt[16]={11,22,33,44,55,66,77,88,99,0,11,22,11,22,33,44};unsigned char Decrypt[16]={0};unsigned char temp[16]={0};unsigned char key[16]={0x00,0x01,0x02,0x03,0x04,0x05,0x06,0x07,0x08,0x09,0x0a,0x0b,0x0c,0x0d,0x0e,0x0f};AES_Init(key);AES_Encrypt_PKCS7 (Encrypt, Decrypt, 16, key);AES_Decrypt(temp, Decrypt, 16, key);
}

temp的值和Encrpy相等！！！！

nrf51822微信---AES加密相关推荐

1. 微信小程序 AES加密ECB模式

   微信小程序 AES加密网上大部分是CBC模式,但是java后台用的是ECB模式 ECB模式 js文件下载 下载链接 (有好多写着ECB模式,但是下载了还是CBC的,可恨-) 下面展示一下两种模式解密结 ...

2. 微信小程序接口安全优化（AES加密）

   接口优化 优化前:http://a.com/message.php?page=0 优化后: http://a.com/message.php?page=参数&openid=用户唯一标识& ...

3. aes子密钥生成c语言_HBase配置AES加密

   特别说明:该专栏文章均来源自微信公众号<大数据实战演练>,欢迎关注! 版本: HDP:3.0.1.0 HBase:2.0.0 一.前言 为了避免第三方非法访问我们的重要数据,我们可以给HB ...

4. 【JS 逆向百例】cnki 学术翻译 AES 加密分析

   关注微信公众号:K哥爬虫,QQ交流群:808574309,持续分享爬虫进阶.JS/安卓逆向等技术干货! 声明 本文章中所有内容仅供学习交流,抓包内容.敏感网址.数据接口均已做脱敏处理,严禁用于商业用途 ...

5. 【JS 逆向百例】某易支付密码 MD5+AES 加密分析

   关注微信公众号:K哥爬虫,持续分享爬虫进阶.JS/安卓逆向等技术干货! 声明 本文章中所有内容仅供学习交流,抓包内容.敏感网址.数据接口均已做脱敏处理,严禁用于商业用途和非法用途,否则由此产生的一切后 ...

6. 【JS 逆向百例】如何跟栈调试？某 e 网通 AES 加密分析

   关注微信公众号:K哥爬虫,QQ交流群:808574309,持续分享爬虫进阶.JS/安卓逆向等技术干货! 声明 本文章中所有内容仅供学习交流,抓包内容.敏感网址.数据接口均已做脱敏处理,严禁用于商业用途 ...

7. js aes加密_某高考咨询网js逆向分析笔记

   一.某高考资讯网逆向分析 某网站的js加密分析,安全签名signsafe + HmacSHA1 + AES 一年前分析过网站数据还没有加密,最近需要获取新的数据发现原先的爬虫失效,请求和响应都经过加密 ...

8. 前端JavaScript AES解密 AES加密 ECB模式

   项目里使用过md5.base64,使用AES的安全系数会高一些. 高级加密标准(AES,Advanced Encryption Standard)为最常见的对称加密算法,微信小程序加密传输就是用这个加 ...

9. 小程序登录的AES加密解释

   前情回顾 通过wx.getUserInfo()的success回调得到的加密数据( encryptedData ) 对加密数据( encryptedData )解密后可得到openId和unionId ...

最新文章

1. cad 怎么显示块句柄_新手必看的CAD小技巧，老师傅精选汇总，三分钟教你学习用处多多...
2. Oracle RAC 添加删除节点
3. 测量分类准确率的过程算坍缩吗？
4. 【ABAP增强】基于函数的出口CMOD
5. php图片截取后缀,PHP抓取远程图片(含不带后缀的)教程详解
6. IIS7配置PHP 报错 对找不到的文件启用文件监视
7. easyplayerpro 使用说明_EasyPlayerPro(Windows)流媒体播放器开发之ffmpeg log输出报错
8. 图片饱和度_做PPT时，文字放在图片上老是看不清，咋办？
9. Axure中后台管理信息系统通用原型方案 /框架模板/数据仪表/团队协作/会员管理/电商系统/资金统计/数据监控/销量统计/订单管理/客户管理/团队协作/职务管理/业务信息/员工管理/即时通讯
10. 微软将 Teams 移动应用纳入漏洞奖励计划，最高奖金3万美元
11. 思考题2（人车关系）
12. Android vs iOS vs BlackBerry: Which is the most secure holiday gift?
13. 利用WinForm 更好的实现Web安装程序的更多功能
14. 用 Vue 做一个简单的购物app
15. 徐州计算机应用宿舍,江苏徐州财经高等职业技术学校住宿条件
16. 常用的内部网关协议（IGP）
17. 基于yolov3的水下目标检测（百度飞浆实现）
18. 两阶段随机规划模型简介
19. Unity入门常见错误之碰撞检测方法无法触发
20. 我用 Python 分析了 “青你 2” 漂亮小姐姐的颜值，结果真香！

热门文章

1. java f3查看源码报错,Java学习笔记4
2. 思科公司详细的工资待遇
3. HTML编码规范 - (WEB前端命名规范)
4. Cesium.js 加载3D模型
5. Java面向对象——String类（二）
6. PS绘画教程重点摘录1
7. 植物大战僵尸超Z联赛高分攻略
8. DNSPod十问腾讯云副总裁李郁韬：我们距离全真互联网还有多远？
9. KBP307-ASEMI小扁桥适配小电源整流桥
10. 一文详解｜高校到底如何开展数据分类分级？