第JavaC++實現(xiàn)相同MD5加密算法的方式for(i=0,j=0;jlen;i++,j+=4){

output[j]=(unsignedchar)(input[i]0xff);

output[j+1]=(unsignedchar)((input[i]8)0xff);

output[j+2]=(unsignedchar)((input[i]16)0xff);

output[j+3]=(unsignedchar)((input[i]24)0xff);

inlinevoidDecode(UINT4*output,unsignedchar*input,unsignedintlen)

unsignedinti,j;

for(i=0,j=0;jlen;i++,j+=4)

output[i]=((UINT4)input[j])|(((UINT4)input[j+1])8)|

(((UINT4)input[j+2])16)|(((UINT4)input[j+3])24);

inlinevoidMD5Transform(UINT4state[4],unsignedcharblock[64])

UINT4a=state[0],b=state[1],c=state[2],d=state[3],x[16];

Decode(x,block,64);

FF(a,b,c,d,x[0],S11,0xd76aa478);

FF(d,a,b,c,x[1],S12,0xe8c7b756);

FF(c,d,a,b,x[2],S13,0x242070db);

FF(b,c,d,a,x[3],S14,0xc1bdceee);

FF(a,b,c,d,x[4],S11,0xf57c0faf);

FF(d,a,b,c,x[5],S12,0x4787c62a);

FF(c,d,a,b,x[6],S13,0xa8304613);

FF(b,c,d,a,x[7],S14,0xfd469501);

FF(a,b,c,d,x[8],S11,0x698098d8);

FF(d,a,b,c,x[9],S12,0x8b44f7af);

FF(c,d,a,b,x[10],S13,0xffff5bb1);

FF(b,c,d,a,x[11],S14,0x895cd7be);

FF(a,b,c,d,x[12],S11,0x6b901122);

FF(d,a,b,c,x[13],S12,0xfd987193);

FF(c,d,a,b,x[14],S13,0xa679438e);

FF(b,c,d,a,x[15],S14,0x49b40821);

GG(a,b,c,d,x[1],S21,0xf61e2562);

GG(d,a,b,c,x[6],S22,0xc040b340);

GG(c,d,a,b,x[11],S23,0x265e5a51);

GG(b,c,d,a,x[0],S24,0xe9b6c7aa);

GG(a,b,c,d,x[5],S21,0xd62f105d);

GG(d,a,b,c,x[10],S22,0x2441453);

GG(c,d,a,b,x[15],S23,0xd8a1e681);

GG(b,c,d,a,x[4],S24,0xe7d3fbc8);

GG(a,b,c,d,x[9],S21,0x21e1cde6);

GG(d,a,b,c,x[14],S22,0xc33707d6);

GG(c,d,a,b,x[3],S23,0xf4d50d87);

GG(b,c,d,a,x[8],S24,0x455a14ed);

GG(a,b,c,d,x[13],S21,0xa9e3e905);

GG(d,a,b,c,x[2],S22,0xfcefa3f8);

GG(c,d,a,b,x[7],S23,0x676f02d9);

GG(b,c,d,a,x[12],S24,0x8d2a4c8a);

HH(a,b,c,d,x[5],S31,0xfffa3942);

HH(d,a,b,c,x[8],S32,0x8771f681);

HH(c,d,a,b,x[11],S33,0x6d9d6122);

HH(b,c,d,a,x[14],S34,0xfde5380c);

HH(a,b,c,d,x[1],S31,0xa4beea44);

HH(d,a,b,c,x[4],S32,0x4bdecfa9);

HH(c,d,a,b,x[7],S33,0xf6bb4b60);

HH(b,c,d,a,x[10],S34,0xbebfbc70);

HH(a,b,c,d,x[13],S31,0x289b7ec6);

HH(d,a,b,c,x[0],S32,0xeaa127fa);

HH(c,d,a,b,x[3],S33,0xd4ef3085);

HH(b,c,d,a,x[6],S34,0x4881d05);

HH(a,b,c,d,x[9],S31,0xd9d4d039);

HH(d,a,b,c,x[12],S32,0xe6db99e5);

HH(c,d,a,b,x[15],S33,0x1fa27cf8);

HH(b,c,d,a,x[2],S34,0xc4ac5665);

II(a,b,c,d,x[0],S41,0xf4292244);

II(d,a,b,c,x[7],S42,0x432aff97);

II(c,d,a,b,x[14],S43,0xab9423a7);

II(b,c,d,a,x[5],S44,0xfc93a039);

II(a,b,c,d,x[12],S41,0x655b59c3);

II(d,a,b,c,x[3],S42,0x8f0ccc92);

II(c,d,a,b,x[10],S43,0xffeff47d);

II(b,c,d,a,x[1],S44,0x85845dd1);

II(a,b,c,d,x[8],S41,0x6fa87e4f);

II(d,a,b,c,x[15],S42,0xfe2ce6e0);

II(c,d,a,b,x[6],S43,0xa3014314);

II(b,c,d,a,x[13],S44,0x4e0811a1);

II(a,b,c,d,x[4],S41,0xf7537e82);

II(d,a,b,c,x[11],S42,0xbd3af235);

II(c,d,a,b,x[2],S43,0x2ad7d2bb);

II(b,c,d,a,x[9],S44,0xeb86d391);

state[0]+=a;

state[1]+=b;

state[2]+=c;

state[3]+=d;

memset((POINTER)x,0,sizeof(x));

inlinevoidMD5Init(MD5_CTX*context)

context-count[0]=context-count[1]=0;

context-state[0]=0x67452301;

context-state[1]=0xefcdab89;

context-state[2]=0x98badcfe;

context-state[3]=0x10325476;

inlinevoidMD5Update(MD5_CTX*context,unsignedchar*input,unsignedintinputLen)

unsignedinti,index,partLen;

index=(unsignedint)((context-count[0]3)0x3F);

if((context-count[0]+=((UINT4)inputLen3))

((UINT4)inputLen3))

context-count[1]++;

context-count[1]+=((UINT4)inputLen29);

partLen=64-index;

if(inputLen=partLen){

memcpy((POINTER)context-buffer[index],(POINTER)input,partLen);

MD5Transform(context-state,context-buffer);

for(i=partLen;i+63inputLen;i+=64)

MD5Transform(context-state,input[i]);

index=0;

else

i=0;

memcpy((POINTER)context-buffer[index],(POINTER)input[i],inputLen-i);

inlinevoidMD5Final(unsignedchardigest[16],MD5_CTX*context)

unsignedcharbits[8];

unsignedintindex,padLen;

Encode(bits,context-count,8);

index=(unsignedint)((context-count[0]3)0x3f);

padLen=(index56)(56-index):(120-index);

MD5Update(context,PADDING,padLen);

MD5Update(context,bits,8);

Encode(digest,context-state,16);

memset((POINTER)context,0,sizeof(*context));

voidMD5Digest(char*pszInput,unsignedlongnInputSize,char*pszOutPut)

MD5_CTXcontext;

unsignedintlen=strlen(pszInput);

MD5Init(context);

MD5Update(context,(unsignedchar*)pszInput,len);

MD5Final((unsignedchar*)pszOutPut,context);

main()

{charszDigest[16];

charencrypt[200];

printf(請輸入要計算MD5值的字符串:

gets(encrypt);

printf(\n加密結(jié)果: