md5库.docx
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md5库.docx
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md5库
以下为md5lib.h头文件和其对应的使用方法的代码,注意define语句要放在一行编译。
#include
#include
#include
#defineMD5
/*GLOBAL.H-RSAREFtypesandconstants
*/
/*PROTOTYPESshouldbesettooneifandonlyifthecompilersupports
functionargumentprototyping.
ThefollowingmakesPROTOTYPESdefaultto0ifithasnotalready
beendefinedwithCcompilerflags.
*/
#ifndefPROTOTYPES
#definePROTOTYPES0
#endif
/*POINTERdefinesagenericpointertype*/
typedefunsignedchar*POINTER;
/*UINT2definesatwobyteword*/
typedefunsignedshortintUINT2;
/*UINT4definesafourbyteword*/
typedefunsignedlongintUINT4;
/*PROTO_LISTisdefineddependingonhowPROTOTYPESisdefinedabove.
IfusingPROTOTYPES,thenPROTO_LISTreturnsthelist,otherwiseit
returnsanemptylist.
*/
#ifPROTOTYPES
#definePROTO_LIST(list)list
#else
#definePROTO_LIST(list)()
#endif
/*Lengthoftestblock,numberoftestblocks.
*/
#defineTEST_BLOCK_LEN1000
#defineTEST_BLOCK_COUNT1000
/*ConstantsforMD5Transformroutine.
*/
#defineS117
#defineS1212
#defineS1317
#defineS1422
#defineS215
#defineS229
#defineS2314
#defineS2420
#defineS314
#defineS3211
#defineS3316
#defineS3423
#defineS416
#defineS4210
#defineS4315
#defineS4421
char*MDStringPROTO_LIST((char*));
char*MDFilePROTO_LIST((char*));
char*hmac_md5(char*text,char*key);
typedefstruct{
UINT4state[4];/*state(ABCD)*/
UINT4count[2];/*numberofbits,modulo2^64(lsbfirst)*/
unsignedcharbuffer[64];/*inputbuffer*/
}MD5_CTX;
/*voidMD5InitPROTO_LIST((MD5_CTX*));
voidMD5UpdatePROTO_LIST
((MD5_CTX*,unsignedchar*,unsignedint));
voidMD5FinalPROTO_LIST((unsignedchar[16],MD5_CTX*));
staticvoidMD5TransformPROTO_LIST((UINT4[4],unsignedchar[64]));
staticvoidEncodePROTO_LIST
((unsignedchar*,UINT4*,unsignedint));
staticvoidDecodePROTO_LIST
((UINT4*,unsignedchar*,unsignedint));
staticvoidMD5_memcpyPROTO_LIST((POINTER,POINTER,unsignedint));
staticvoidMD5_memsetPROTO_LIST((POINTER,int,unsignedint));
*/
staticunsignedcharPADDING[64]={
0x80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
};
/*F,G,HandIarebasicMD5functions.
*/
#defineF(x,y,z)(((x)&(y))|((~x)&(z)))
#defineG(x,y,z)(((x)&(z))|((y)&(~z)))
#defineH(x,y,z)((x)^(y)^(z))
#defineI(x,y,z)((y)^((x)|(~z)))
/*ROTATE_LEFTrotatesxleftnbits.
*/
#defineROTATE_LEFT(x,n)(((x)<<(n))|((x)>>(32-(n))))
/*FF,GG,HH,andIItransformationsforrounds1,2,3,and4.
Rotationisseparatefromadditiontopreventrecomputation.
*/
#defineFF(a,b,c,d,x,s,ac){
(a)+=F((b),(c),(d))+(x)+(UINT4)(ac);
(a)=ROTATE_LEFT((a),(s));
(a)+=(b);
}
#defineGG(a,b,c,d,x,s,ac){
(a)+=G((b),(c),(d))+(x)+(UINT4)(ac);
(a)=ROTATE_LEFT((a),(s));
(a)+=(b);
}
#defineHH(a,b,c,d,x,s,ac){
(a)+=H((b),(c),(d))+(x)+(UINT4)(ac);
(a)=ROTATE_LEFT((a),(s));
(a)+=(b);
}
#defineII(a,b,c,d,x,s,ac){
(a)+=I((b),(c),(d))+(x)+(UINT4)(ac);
(a)=ROTATE_LEFT((a),(s));
(a)+=(b);
}
voidMD5Init(MD5_CTX*context);
voidMD5Update(MD5_CTX*context,unsignedchar*input,unsignedintinputLen);
voidMD5Final(unsignedchardigest[16],MD5_CTX*context);
staticvoidMD5Transform(UINT4[4],unsignedchar[64]);
staticvoidEncode(unsignedchar*,UINT4*,unsignedint);
staticvoidDecode(UINT4*,unsignedchar*,unsignedint);
staticvoidMD5_memcpy(POINTER,POINTER,unsignedint);
staticvoidMD5_memset(POINTER,int,unsignedint);
/*MD5initialization.BeginsanMD5operation,writinganewcontext.
*/
voidMD5Init(MD5_CTX*context)
/*context*/
{
context->count[0]=context->count[1]=0;
/*Loadmagicinitializationconstants.
*/
context->state[0]=0x67452301;
context->state[1]=0xefcdab89;
context->state[2]=0x98badcfe;
context->state[3]=0x10325476;
}
/*MD5blockupdateoperation.ContinuesanMD5message-digest
operation,processinganothermessageblock,andupdatingthe
context.
*/
voidMD5Update(MD5_CTX*context,unsignedchar*input,unsignedintinputLen)
/*context*/
/*inputblock*/
/*lengthofinputblock*/
{
unsignedinti,index,partLen;
/*Computenumberofbytesmod64*/
index=(unsignedint)((context->count[0]>>3)&0x3F);
/*Updatenumberofbits*/
if((context->count[0]+=((UINT4)inputLen<<3))
<((UINT4)inputLen<<3))
context->count[1]++;
context->count[1]+=((UINT4)inputLen>>29);
partLen=64-index;
/*Transformasmanytimesaspossible.
*/
if(inputLen>=partLen){
MD5_memcpy
((POINTER)&context->buffer[index],(POINTER)input,partLen);
MD5Transform(context->state,context->buffer);
for(i=partLen;i+63 MD5Transform(context->state,&input[i]); index=0; } else i=0; /*Bufferremaininginput*/ MD5_memcpy ((POINTER)&context->buffer[index],(POINTER)&input[i], inputLen-i); } /*MD5finalization.EndsanMD5message-digestoperation,writingthe themessagedigestandzeroizingthecontext. */ voidMD5Final(unsignedchardigest[16],MD5_CTX*context) /*messagedigest*/ /*context*/ { unsignedcharbits[8]; unsignedintindex,padLen; /*Savenumberofbits*/ Encode(bits,context->count,8); /*Padoutto56mod64. */ index=(unsignedint)((context->count[0]>>3)&0x3f); padLen=(index<56)? (56-index): (120-index); MD5Update(context,(unsignedchar*)PADDING,padLen); /*Appendlength(beforepadding)*/ MD5Update(context,bits,8); /*Storestateindigest*/ Encode(digest,context->state,16); /*Zeroizesensitiveinformation. */ MD5_memset((POINTER)context,0,sizeof(*context)); } /*MD5basictransformation.Transformsstatebasedonblock. */ staticvoidMD5Transform(UINT4state[4], unsignedcharblock[64]) { inti=0; UINT4a=state[0],b=state[1],c=state[2],d=state[3],x[16]; Decode(x,block,64); /*Round1*/ FF(a,b,c,d,x[0],S11,0xd76aa478);/*1*/ FF(d,a,b,c,x[1],S12,0xe8c7b756);/*2*/ FF(c,d,a,b,x[2],S13,0x242070db);/*3*/ FF(b,c,d,a,x[3],S14,0xc1bdceee);/*4*/ FF(a,b,c,d,x[4],S11,0xf57c0faf);/*5*/ FF(d,a,b,c,x[5],S12,0x4787c62a);/*6*/ FF(c,d,a,b,x[6],S13,0xa8304613);/*7*/ FF(b,c,d,a,x[7],S14,0xfd469501);/*8*/ FF(a,b,c,d,x[8],S11,0x698098d8);/*9*/ FF(d,a,b,c,x[9],S12,0x8b44f7af);/*10*/ FF(c,d,a,b,x[10],S13,0xffff5bb1);/*11*/ FF(b,c,d,a,x[11],S14,0x895cd7be);/*12*/ FF(a,b,c,d,x[12],S11,0x6b901122);/*13*/ FF(d,a,b,c,x[13],S12,0xfd987193);/*14*/ FF(c,d,a,b,x[14],S13,0xa679438e);/*15*/ FF(b,c,d,a,x[15],S14,0x49b40821);/*16*/ /*Round2*/ GG(a,b,c,d,x[1],S21,0xf61e2562);/*17*/ GG(d,a,b,c,x[6],S22,0xc040b340);/*18*/ GG(c,d,a,b,x[11],S23,0x265e5a51);/*19*/ GG(b,c,d,a,x[0],S24,0xe9b6c7aa);/*20*/ GG(a,b,c,d,x[5],S21,0xd62f105d);/*21*/ GG(d,a,b,c,x[10],S22,0x2441453);/*22*/ GG(c,d,a,b,x[15],S23,0xd8a1e681);/*23*/ GG(b,c,d,a,x[4],S24,0xe7d3fbc8);/*24*/ GG(a,b,c,d,x[9],S21,0x21e1cde6);/*25*/ GG(d,a,b,c,x[14],S22,0xc33707d6);/*26*/ GG(c,d,a,b,x[3],S23,0xf4d50d87);/*27*/ GG(b,c,d,a,x[8],S24,0x455a14ed);/*28*/ GG(a,b,c,d,x[13],S21,0xa9e3e905);/*29*/ GG(d,a,b,c,x[2],S22,0xfcefa3f8);/*30*/ GG(c,d,a,b,x[7],S23,0x676f02d9);/*31*/ GG(b,c,d,a,x[12],S24,0x8d2a4c8a);/*32*/ /*Round3*/ HH(a,b,c,d,x[5],S31,0xfffa3942);/*33*/ HH(d,a,b,c,x[8],S32,0x8771f681);/*34*/ HH(c,d,a,b,x[11],S33,0x6d9d6122);/*35*/ HH(b,c,d,a,x[14],S34,0xfde5380c);/*36*/ HH(a,b,c,d,x[1],S31,0xa4beea44);/*37*/ HH(d,a,b,c,x[4],S32,0x4bdecfa9);/*38*/ HH(c,d,a,b,x[7],S33,0xf6bb4b60);/*39*/ HH(b,c,d,a,x[10],S34,0xbebfbc70);/*40*/ HH(a,b,c,d,x[13],S31,0x289b7ec6);/*41*/ HH(d,a,b,c,x[0],S32,0xeaa127fa);/*42*/ HH(c,d,a,b,x[3],S33,0xd4ef3085);/*43*/ HH(b,c,d,a,x[6],S34,0x4881d05);/*44*/ HH(a,b,c,d,x[9],S31,0xd9d4d039);/*45*/ HH(d,a,b,c,x[12],S32,0xe6db99e5);/*46*/ HH(c,d,a,b,x[15],S33,0x1fa27cf8);/*47*/ HH(b,c,d,a,x[2],S34,0xc4ac5665);/*48*/ /*Round4*/ II(a,b,c,d,x[0],S41,0xf4292244);/*49*/ II(d,a,b,c,x[7],S42,0x432aff97);/*50*/ II(c,d,a,b,x[14],S43,0xab9423a7);/*51*/ II(b,c,d,a,x[5],S44,0xfc93a039);/*52*/ II(a,b,c,d,x[12],S41,0x655b59c3);/*53*/ II(d,a,b,c,x[3],S42,0x8f0ccc92);/*54*/ II(c,d,a,b,x[10],S43,0xffeff47d);/*55*/ II(b,c,d,a,x[1],S44,0x85845dd1);/*56*/ II(a,b,c,d,x[8],S41,0x6fa87e4f);/*57*/ II(d,a,b,c,x[15],S42,0xfe2ce6e0);/*58*/ II(c,d,a,b,x[6],S43,0xa3014314);/*59*/ II(b,c,d,a,x[13],S44,0x4e0811a1);/*60*/ II(a,b,c,d,x[4],S41,0xf7537e82);/*61*/ II(d,a,b,c,x[11],S42,0xbd3af235);/*62*/ II(c,d,a,b,x[2],S43,0x2ad7d2bb);/*63*/ II(b,c,d,a,x[9],S44,0xeb86d391);/*64*/ state[0]+=a; state[1]+=b; state[2]+=c; state[3]+=d; /*Zeroizesensitiveinformation. */ MD5_memset((POINTER)x,0,sizeof(x)); } /*Encodesinput(UINT4)intooutput(unsignedchar).Assumeslenis amultipleof4. */ static
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