JavaScript MD5 与 Java MessageDigest 加密后的值相同

JavaScript 数据加密方法：

使用在js中调用MD5(...)方法（在使用方法前先导入下面JS代码）{

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function array(n) {

for(i=0;i<n;i++) this[i]=0;

this.length=n;

}

/* Quelques fonctions fondamentales doivent ¨ºtre transform¨¦es ¨¤ cause

* d'erreurs Javascript.

* Essayez par exemple de calculer 0xffffffff >> 4 ...

* Les fonctions utilis¨¦es maintenant sont il est vrai plus lentes que les

* fonctions originales mais elles fonctionnent.

*/

function integer(n) { return n%(0xffffffff+1); }

function shr(a,b) {

a=integer(a);

b=integer(b);

if (a-0x80000000>=0) {

a=a%0x80000000;

a>>=b;

a+=0x40000000>>(b-1);

} else

a>>=b;

return a;

}

function shl1(a) {

a=a%0x80000000;

if (a&0x40000000==0x40000000)

{

a-=0x40000000;

a*=2;

a+=0x80000000;

} else

a*=2;

return a;

}

function shl(a,b) {

a=integer(a);

b=integer(b);

for (var i=0;i<b;i++) a=shl1(a);

return a;

}

function and(a,b) {

a=integer(a);

b=integer(b);

var t1=(a-0x80000000);

var t2=(b-0x80000000);

if (t1>=0)

if (t2>=0)

return ((t1&t2)+0x80000000);

else

return (t1&b);

else

if (t2>=0)

return (a&t2);

else

return (a&b);

}

function or(a,b) {

a=integer(a);

b=integer(b);

var t1=(a-0x80000000);

var t2=(b-0x80000000);

if (t1>=0)

if (t2>=0)

return ((t1|t2)+0x80000000);

else

return ((t1|b)+0x80000000);

else

if (t2>=0)

return ((a|t2)+0x80000000);

else

return (a|b);

}

function xor(a,b) {

a=integer(a);

b=integer(b);

var t1=(a-0x80000000);

var t2=(b-0x80000000);

if (t1>=0)

if (t2>=0)

return (t1^t2);

else

return ((t1^b)+0x80000000);

else

if (t2>=0)

return ((a^t2)+0x80000000);

else

return (a^b);

}

function not(a) {

a=integer(a);

return (0xffffffff-a);

}

/* D¨¦but de l'algorithme */

var state = new array(4);

var count = new array(2);

count[0] = 0;

count[1] = 0;

var buffer = new array(64);

var transformBuffer = new array(16);

var digestBits = new array(16);

var S11 = 7;

var S12 = 12;

var S13 = 17;

var S14 = 22;

var S21 = 5;

var S22 = 9;

var S23 = 14;

var S24 = 20;

var S31 = 4;

var S32 = 11;

var S33 = 16;

var S34 = 23;

var S41 = 6;

var S42 = 10;

var S43 = 15;

var S44 = 21;

function F(x,y,z) {

return or(and(x,y),and(not(x),z));

}

function G(x,y,z) {

return or(and(x,z),and(y,not(z)));

}

function H(x,y,z) {

return xor(xor(x,y),z);

}

function I(x,y,z) {

return xor(y ,or(x , not(z)));

}

function rotateLeft(a,n) {

return or(shl(a, n),(shr(a,(32 - n))));

}

function FF(a,b,c,d,x,s,ac) {

a = a+F(b, c, d) + x + ac;

a = rotateLeft(a, s);

a = a+b;

return a;

}

function GG(a,b,c,d,x,s,ac) {

a = a+G(b, c, d) +x + ac;

a = rotateLeft(a, s);

a = a+b;

return a;

}

function HH(a,b,c,d,x,s,ac) {

a = a+H(b, c, d) + x + ac;

a = rotateLeft(a, s);

a = a+b;

return a;

}

function II(a,b,c,d,x,s,ac) {

a = a+I(b, c, d) + x + ac;

a = rotateLeft(a, s);

a = a+b;

return a;

}

function transform(buf,offset) {

var a=0, b=0, c=0, d=0;

var x = transformBuffer;

a = state[0];

b = state[1];

c = state[2];

d = state[3];

for (i = 0; i < 16; i++) {

x[i] = and(buf[i*4+offset],0xff);

for (j = 1; j < 4; j++) {

x[i]+=shl(and(buf[i*4+j+offset] ,0xff), j * 8);

}

}

/* tour 1 */

a = FF ( a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */

d = FF ( d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */

c = FF ( c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */

b = FF ( b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */

a = FF ( a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */

d = FF ( d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */

c = FF ( c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */

b = FF ( b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */

a = FF ( a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */

d = FF ( d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */

c = FF ( c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */

b = FF ( b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */

a = FF ( a, b, c, d, x[12], S11, 0x6b901122); /* 13 */

d = FF ( d, a, b, c, x[13], S12, 0xfd987193); /* 14 */

c = FF ( c, d, a, b, x[14], S13, 0xa679438e); /* 15 */

b = FF ( b, c, d, a, x[15], S14, 0x49b40821); /* 16 */

/* tour 2 */

a = GG ( a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */

d = GG ( d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */

c = GG ( c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */

b = GG ( b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */

a = GG ( a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */

d = GG ( d, a, b, c, x[10], S22, 0x2441453); /* 22 */

c = GG ( c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */

b = GG ( b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */

a = GG ( a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */

d = GG ( d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */

c = GG ( c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */

b = GG ( b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */

a = GG ( a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */

d = GG ( d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */

c = GG ( c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */

b = GG ( b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */

/* tour 3 */

a = HH ( a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */

d = HH ( d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */

c = HH ( c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */

b = HH ( b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */

a = HH ( a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */

d = HH ( d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */

c = HH ( c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */

b = HH ( b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */

a = HH ( a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */

d = HH ( d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */

c = HH ( c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */

b = HH ( b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */

a = HH ( a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */

d = HH ( d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */

c = HH ( c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */

b = HH ( b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */

/* tour 4 */

a = II ( a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */

d = II ( d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */

c = II ( c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */

b = II ( b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */

a = II ( a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */

d = II ( d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */

c = II ( c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */

b = II ( b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */

a = II ( a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */

d = II ( d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */

c = II ( c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */

b = II ( b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */

a = II ( a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */

d = II ( d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */

c = II ( c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */

b = II ( b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */

state[0] +=a;

state[1] +=b;

state[2] +=c;

state[3] +=d;

}

/* Avec l'initialisation de Dobbertin:

state[0] = 0x12ac2375;

state[1] = 0x3b341042;

state[2] = 0x5f62b97c;

state[3] = 0x4ba763ed;

s'il y a une collision:

begin 644 Message1

M7MH=JO6_>MG!X?!51$)W,CXV!A"=(!AR71,<X`Y-IIT9^Z&8L$2N'Y*Y:R.;

39GIK9>TF$W()/MEHR%C4:G1R:Q"=

`

end

begin 644 Message2

M7MH=JO6_>MG!X?!51$)W,CXV!A"=(!AR71,<X`Y-IIT9^Z&8L$2N'Y*Y:R.;

39GIK9>TF$W()/MEHREC4:G1R:Q"=

`

end

*/

function init() {

count[0]=count[1] = 0;

state[0] = 0x67452301;

state[1] = 0xefcdab89;

state[2] = 0x98badcfe;

state[3] = 0x10325476;

for (i = 0; i < digestBits.length; i++)

digestBits[i] = 0;

}

function update(b) {

var index,i;

index = and(shr(count[0],3) , 0x3f);

if (count[0]<0xffffffff-7)

count[0] += 8;

else {

count[1]++;

count[0]-=0xffffffff+1;

count[0]+=8;

}

buffer[index] = and(b,0xff);

if (index >= 63) {

transform(buffer, 0);

}

}

function finish() {

var bits = new array(8);

var padding;

var i=0, index=0, padLen=0;

for (i = 0; i < 4; i++) {

bits[i] = and(shr(count[0],(i * 8)), 0xff);

}

for (i = 0; i < 4; i++) {

bits[i+4]=and(shr(count[1],(i * 8)), 0xff);

}

index = and(shr(count[0], 3) ,0x3f);

padLen = (index < 56) ? (56 - index) : (120 - index);

padding = new array(64);

padding[0] = 0x80;

for (i=0;i<padLen;i++)

update(padding[i]);

for (i=0;i<8;i++)

update(bits[i]);

for (i = 0; i < 4; i++) {

for (j = 0; j < 4; j++) {

digestBits[i*4+j] = and(shr(state[i], (j * 8)) , 0xff);

}

}

}

/* Fin de l'algorithme MD5 */

function hexa(n) {

var hexa_h = "0123456789abcdef";

var hexa_c="";

var hexa_m=n;

for (hexa_i=0;hexa_i<8;hexa_i++) {

hexa_c=hexa_h.charAt(Math.abs(hexa_m)%16)+hexa_c;

hexa_m=Math.floor(hexa_m/16);

}

return hexa_c;

}

var ascii="01234567890123456789012345678901" +

" !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ"+

"[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~";

function MD5(message)

{

var l,s,k,ka,kb,kc,kd;

init();

for (k=0;k<message.length;k++) {

l=message.charAt(k);

update(ascii.lastIndexOf(l));

}

finish();

ka=kb=kc=kd=0;

for (i=0;i<4;i++) ka+=shl(digestBits[15-i], (i*8));

for (i=4;i<8;i++) kb+=shl(digestBits[15-i], ((i-4)*8));

for (i=8;i<12;i++) kc+=shl(digestBits[15-i], ((i-8)*8));

for (i=12;i<16;i++) kd+=shl(digestBits[15-i], ((i-12)*8));

s=hexa(kd)+hexa(kc)+hexa(kb)+hexa(ka);

return s;

}

};

Java 中 MessageDigest数据加密方法：

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public static String MD5(String str) throws NoSuchAlgorithmException {

String encode = str;

StringBuilder stringbuilder = new StringBuilder();

MessageDigest md5 = MessageDigest.getInstance("MD5");

md5.update(encode.getBytes());

byte[] str_encoded = md5.digest();

for (int i = 0; i < str_encoded.length; i++) {

if ((str_encoded[i] & 0xff) < 0x10) {

stringbuilder.append("0");

}

stringbuilder.append(Long.toString(str_encoded[i] & 0xff, 16));

}

return stringbuilder.toString();

}