BCB实现 Hmac_sha1算法源码

    到处找不到合适于BCB用的Hmac_sha1算法，openssl也不好用，于是找了些资料，自已编写了一个实现的类。实现二进制、十六进制和Base64编码的Hmac_sha1输出。

原创代码，引用请注明出处，谢谢！与网上在线加密解密（点击打开链接）对比过，结果非常正确！

<pre name="code" class="cpp">#define SHA1_LITTLE_ENDIAN#define _R0(v,w,x,y,z,i) { z+=((w&(x^y))^y)+SHABLK0(i)+0x5A827999+ROL32(v,5); w=ROL32(w,30); }#define _R1(v,w,x,y,z,i) { z+=((w&(x^y))^y)+SHABLK(i)+0x5A827999+ROL32(v,5); w=ROL32(w,30); }#define _R2(v,w,x,y,z,i) { z+=(w^x^y)+SHABLK(i)+0x6ED9EBA1+ROL32(v,5); w=ROL32(w,30); }#define _R3(v,w,x,y,z,i) { z+=(((w|x)&y)|(w&x))+SHABLK(i)+0x8F1BBCDC+ROL32(v,5); w=ROL32(w,30); }#define _R4(v,w,x,y,z,i) { z+=(w^x^y)+SHABLK(i)+0xCA62C1D6+ROL32(v,5); w=ROL32(w,30); }#define SHABLK0(i) (m_block->l[i] = \(ROL32(m_block->l[i],24) & 0xFF00FF00) | (ROL32(m_block->l[i],8) & 0x00FF00FF))#define ROL32(_val32, _nBits) (((_val32)<<(_nBits))|((_val32)>>(32-(_nBits))))#define SHABLK(i) (m_block->l[i&15] = ROL32(m_block->l[(i+13)&15] ^ m_block->l[(i+8)&15] \^ m_block->l[(i+2)&15] ^ m_block->l[i&15],1))//==================================================================================================typedef union{  char  c[64];  unsigned long l[16];} SHA1_WORKSPACE_BLOCK;//==================================================================================================class CHMAC_SHA1{  private:         unsigned long m_state[5]; unsigned long m_count[2]; unsigned long __reserved1[1]; char  m_buffer[64]; char  m_digest[20]; unsigned long __reserved2[3];         unsigned char m_ipad[64];         unsigned char  m_opad[64];         char * szReport ; char * SHA1_Key ; char * AppendBuf1 ; char * AppendBuf2 ;         char  m_workspace[64];         SHA1_WORKSPACE_BLOCK *m_block; // SHA1 pointer to the byte array above         void Reset();         void Update(char *data, unsigned long len);         void Transform(unsigned long *state, char *buffer);         void Final();         enum {         SHA1_DIGEST_LENGTH= 20, SHA1_BLOCK_SIZE= 64, HMAC_BUF_LEN= 4096       } ;  public: CHMAC_SHA1()            :szReport(new char[HMAC_BUF_LEN]),                    AppendBuf1(new char[HMAC_BUF_LEN]),                    AppendBuf2(new char[HMAC_BUF_LEN]),                    SHA1_Key(new char[HMAC_BUF_LEN])            {                     m_block = (SHA1_WORKSPACE_BLOCK *)m_workspace;                     Reset();                     }         ~CHMAC_SHA1()                  {                    delete[] szReport ;                    delete[] AppendBuf1 ;                    delete[] AppendBuf2 ;                    delete[] SHA1_Key ;                    Reset();                   }         void BinHMAC_SHA1(BYTE *text, int text_len, BYTE *key, int key_len, BYTE *sha1);//二进制编码         String HexHMAC_SHA1(BYTE *text, int text_len, BYTE *key, int key_len);//十六进制字符串         String Bas64HMAC_SHA1(BYTE *text, int text_len, BYTE *key, int key_len);//Base64编码         String Base64Encode(char *s,int len);         String Base64Decode(String source);};//=====================================================================================void CHMAC_SHA1::Reset(){  m_state[0] = 0x67452301;  m_state[1] = 0xEFCDAB89;  m_state[2] = 0x98BADCFE;  m_state[3] = 0x10325476;  m_state[4] = 0xC3D2E1F0;  m_count[0] = 0;  m_count[1] = 0;}//---------------------------------------------------------------------------------------void CHMAC_SHA1::Update(char *data, unsigned long len){ unsigned long i, j; j=(m_count[0] >> 3) & 63; if((m_count[0] += len << 3) < (len << 3)) m_count[1]++;    m_count[1] += (len >> 29); if((j + len) > 63)    {     i = 64 - j;     memcpy(&m_buffer[j], data, i);     Transform(m_state, m_buffer);     for(; i + 63 < len; i += 64)        Transform(m_state, &data[i]);     j = 0;    } else    i = 0; memcpy(&m_buffer[j], &data[i], len - i);}//-------------------------------------------------------------------------------------void CHMAC_SHA1::Transform(unsigned long *state, char *buffer){  unsigned long a = state[0], b = state[1], c = state[2], d = state[3], e = state[4];  memcpy(m_block, buffer, 64);  _R0(a,b,c,d,e, 0); _R0(e,a,b,c,d, 1); _R0(d,e,a,b,c, 2); _R0(c,d,e,a,b, 3);  // 4 rounds of 20 operations each. Loop unrolled.  _R0(b,c,d,e,a, 4); _R0(a,b,c,d,e, 5); _R0(e,a,b,c,d, 6); _R0(d,e,a,b,c, 7);  _R0(c,d,e,a,b, 8); _R0(b,c,d,e,a, 9); _R0(a,b,c,d,e,10); _R0(e,a,b,c,d,11);  _R0(d,e,a,b,c,12); _R0(c,d,e,a,b,13); _R0(b,c,d,e,a,14); _R0(a,b,c,d,e,15);  _R1(e,a,b,c,d,16); _R1(d,e,a,b,c,17); _R1(c,d,e,a,b,18); _R1(b,c,d,e,a,19);  _R2(a,b,c,d,e,20); _R2(e,a,b,c,d,21); _R2(d,e,a,b,c,22); _R2(c,d,e,a,b,23);  _R2(b,c,d,e,a,24); _R2(a,b,c,d,e,25); _R2(e,a,b,c,d,26); _R2(d,e,a,b,c,27);  _R2(c,d,e,a,b,28); _R2(b,c,d,e,a,29); _R2(a,b,c,d,e,30); _R2(e,a,b,c,d,31);  _R2(d,e,a,b,c,32); _R2(c,d,e,a,b,33); _R2(b,c,d,e,a,34); _R2(a,b,c,d,e,35);  _R2(e,a,b,c,d,36); _R2(d,e,a,b,c,37); _R2(c,d,e,a,b,38); _R2(b,c,d,e,a,39);  _R3(a,b,c,d,e,40); _R3(e,a,b,c,d,41); _R3(d,e,a,b,c,42); _R3(c,d,e,a,b,43);  _R3(b,c,d,e,a,44); _R3(a,b,c,d,e,45); _R3(e,a,b,c,d,46); _R3(d,e,a,b,c,47);  _R3(c,d,e,a,b,48); _R3(b,c,d,e,a,49); _R3(a,b,c,d,e,50); _R3(e,a,b,c,d,51);  _R3(d,e,a,b,c,52); _R3(c,d,e,a,b,53); _R3(b,c,d,e,a,54); _R3(a,b,c,d,e,55);  _R3(e,a,b,c,d,56); _R3(d,e,a,b,c,57); _R3(c,d,e,a,b,58); _R3(b,c,d,e,a,59);  _R4(a,b,c,d,e,60); _R4(e,a,b,c,d,61); _R4(d,e,a,b,c,62); _R4(c,d,e,a,b,63);  _R4(b,c,d,e,a,64); _R4(a,b,c,d,e,65); _R4(e,a,b,c,d,66); _R4(d,e,a,b,c,67);  _R4(c,d,e,a,b,68); _R4(b,c,d,e,a,69); _R4(a,b,c,d,e,70); _R4(e,a,b,c,d,71);  _R4(d,e,a,b,c,72); _R4(c,d,e,a,b,73); _R4(b,c,d,e,a,74); _R4(a,b,c,d,e,75);  _R4(e,a,b,c,d,76); _R4(d,e,a,b,c,77); _R4(c,d,e,a,b,78); _R4(b,c,d,e,a,79);   state[0] += a;// Add the working vars back into state   state[1] += b;   state[2] += c;   state[3] += d;   state[4] += e;}//----------------------------------------------------------------------------------------------void CHMAC_SHA1::Final(){ unsigned long i; char  finalcount[8]; for(i = 0; i < 8; i++)    finalcount[i] = (char)((m_count[((i >= 4) ? 0 : 1)]>> ((3 - (i & 3)) * 8) ) & 255); // Endian independent Update((char *)"\200", 1); while ((m_count[0] & 504) != 448)      Update((char *)"\0", 1); Update(finalcount, 8); // Cause a SHA1Transform() for(i = 0; i < 20; i++)     m_digest[i] = (char )((m_state[i >> 2] >> ((3 - (i & 3)) * 8) ) & 255);}//------------------------------------------------------------------------------------------------void CHMAC_SHA1::BinHMAC_SHA1(BYTE *text, int text_len, BYTE *key, int key_len, BYTE *digest){ memset(SHA1_Key, 0, SHA1_BLOCK_SIZE); memset(m_ipad, 0x36, sizeof(m_ipad)); memset(m_opad, 0x5c, sizeof(m_opad)); if (key_len > SHA1_BLOCK_SIZE)/* STEP 1 */    {     Reset();     Update((char *)key, key_len);     Final();     memcpy(SHA1_Key, m_digest, 20);     } else     memcpy(SHA1_Key, key, key_len); for (int i=0; i<sizeof(m_ipad); i++)/* STEP 2 */      m_ipad[i] ^= SHA1_Key[i]; memcpy(AppendBuf1, m_ipad, sizeof(m_ipad));/* STEP 3 */ memcpy(AppendBuf1 + sizeof(m_ipad), text, text_len); Reset(); /* STEP 4 */ Update((char *)AppendBuf1, sizeof(m_ipad) + text_len); Final(); memcpy(szReport, m_digest, 20); for (int j=0; j<sizeof(m_opad); j++)/* STEP 5 */      m_opad[j] ^= SHA1_Key[j]; memcpy(AppendBuf2, m_opad, sizeof(m_opad));/* STEP 6 */ memcpy(AppendBuf2 + sizeof(m_opad), szReport, SHA1_DIGEST_LENGTH); Reset();/*STEP 7 */ Update((char *)AppendBuf2, sizeof(m_opad) + SHA1_DIGEST_LENGTH); Final(); memcpy(digest, m_digest, 20);}//-----------------------------------------------------------------------------------String CHMAC_SHA1::HexHMAC_SHA1(BYTE *text, int text_len, BYTE *key, int key_len){  String sha1;  unsigned char binsha1[20];  BinHMAC_SHA1(text,text_len,key,key_len,binsha1);  for(int i=0;i<20;i++)     sha1+=IntToHex(binsha1[i],2);  return sha1; }//-----------------------------------------------------------------------------------String CHMAC_SHA1::Bas64HMAC_SHA1(BYTE *text, int text_len, BYTE *key, int key_len){  String sha1;  String StrSha1;  unsigned char binsha1[20];  BinHMAC_SHA1(text,text_len,key,key_len,binsha1);  return Base64Encode(binsha1,20); }//==================================================================================String CHMAC_SHA1::Base64Encode(char *s,int len){  int m_len; //字符串长度  int i; //循环变量  int m_tmp; //临时变量  AnsiString m_64code; //储存Base64编码的字符串  unsigned char* m_s; //临时存储参数字符串　  char m_64[]="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";//Base64字符表  m_len = len;//取得字符串长度  m_s = s;  m_64code="";//返回串置空  for(i=0;i<m_len-m_len%3;i+=3) //处理3的倍数以内的字符    {     m_tmp=m_s[i]/4;     m_64code+=m_64[m_tmp];     m_tmp=m_s[i]%4*16 + m_s[i+1]/16;     m_64code+=m_64[m_tmp];     m_tmp=m_s[i+1]%16*4 + m_s[i+2]/64;     m_64code+=m_64[m_tmp];     m_tmp=m_s[i+2]%64;     m_64code+=m_64[m_tmp];    }   if(m_len%3==2)//如果字符串的长度被3除余2 ,不足的位数补0，尾部补“=”    {     m_tmp=m_s[m_len-2]/4;     m_64code+=m_64[m_tmp];     m_tmp=m_s[m_len-2]%4*16+m_s[m_len-1]/16;     m_64code+=m_64[m_tmp];     m_tmp=m_s[m_len-1]%16*4;     m_64code+=m_64[m_tmp];     m_64code+='=';    }   if(m_len%3==1) //如果字符串的长度被3除余1 ，不足的位数补0，尾部补两个“=”    {     m_tmp=m_s[m_len-1]/4;     m_64code+=m_64[m_tmp];     m_tmp=m_s[m_len-1]%4*16;     m_64code+=m_64[m_tmp];     m_64code+="==";    }   return m_64code; }