网站源代码-基于JAVA WEB技术的旅行社网站系统设计(5)

{

var blockstart; // which block of words from the dataare we using now? var i, j;

var W = new Array(80); // initial constants var H0

= 0x67452301;

var H1 = 0xEFCDAB89; var H2 = 0x98BADCFE; var H3 = 0x10325476; var H4 = 0xC3D2E1F0; // working variables var A, B, C, D, E; var

temp;

// get message to hash

var msg = document.loginform.psw.value;

// note current length

var msg_len = msg.length;

// convert to a 32-bit word

array

var word_array = new Array(); for( i=0; i

// convert 4 bytes to a word

j = msg.charCodeAt(i)<<24 | msg.charCodeAt(i+1)

<<16 | msg.charCodeAt(i+2)<<8 | msg.charCodeAt(i+3); word_array.push( j ); }

// handle final bits, add beginning of padding: 1 bit, then 0 bits

switch( msg_len % 4 )

{

case 0:

// text length was a multiple of 4 bytes, start padding i = 0x080000000; // 4

bytes padding break;

case 1:

// one byte of text left

i = msg.charCodeAt(msg_len-1)<<24 | 0x0800000; // 3 bytes padding

break;

case 2:

// two bytes of text left

i = msg.charCodeAt(msg_len-2)<<24 | msg.charCodeAt(msg_len-1)<<16 | 0x08000; // 2 bytes padding break;

case 3:

// three bytes of text left

i = msg.charCodeAt(msg_len-3)<<24 | msg.charCodeAt

(msg_len-2)<<16 | msg.charCodeAt(msg_len-1)<<8 | 0x80; // 1 byte padding break;

default:

window.alert(\

in the switch!\ return; }

// handle the end of the text and beginning of the padding word_array.push( i );

// pad to 448 bits (mod 512 bits) =

14 words (mod 16 words)

while( (word_array.length % 16) != 14 ) word_array.push( 0 );

// add 64-bit message length (in bits) word_array.push(

msg_len>>>29 );

word_array.push( (msg_len<<3)&0x0ffffffff );

// Process each 16-word block.

for ( blockstart=0; blockstart

// create entries in W array for( i=0; i<16; i++ )

W[i] = word_array[blockstart+i]; for( i=16; i<=79; i++ ) W[i] =

rotate_left(W[i-3] ^ W[i-8] ^ W[i-14] ^ W[i-16], 1);

// copy state A = H0; B = H1; C = H2; D = H3; E = H4;

// update state

variables

for( i= 0; i<=19; i++ ) {

temp = (rotate_left(A,5) + ((B&C) | (~B&D)) + E + W[i] + 0x5A827999) & 0x0ffffffff;

// update state

E = D; D = C;

C = rotate_left(B,30); B = A; A = temp;

}

for( i=20; i<=39; i++ ) {

temp =

(rotate_left(A,5) + (B ^ C ^ D) + E + W[i] + 0x6ED9EBA1) & 0x0ffffffff;

// update state E = D; D = C;

C = rotate_left(B,30);

B = A;

A = temp; }

for( i=40; i<=59; i++ ) {

temp = (rotate_left(A,5) + ((B&C) | (B&D) | (C&D)) + E + W[i] + 0x8F1BBCDC) &

0x0ffffffff;

// update state E = D; D = C;

C = rotate_left(B,30); B = A; A = temp; }

for( i=60;

i<=79; i++ ) {

temp = (rotate_left(A,5) + (B ^ C ^ D) + E + W[i] + 0x6CA62C1D6) & 0x0ffffffff;

// update state E = D; D = C;

C = rotate_left(B,30);

B = A; A = temp; }

H0 = (H0 + A) & 0x0ffffffff; H1 = (H1 + B) & 0x0ffffffff; H2 = (H2 + C) &

0x0ffffffff;

H3 = (H3 + D) & 0x0ffffffff; H4 = (H4 + E) & 0x0ffffffff;

} // of loop on i

// process output

document.loginform.pass.value =

cvt_hex(H0) + cvt_hex(H1) + cvt_hex(H2) + cvt_hex(H3) + cvt_hex(H4); }

公司成员登录

用户

value=mail.sinanet.com name=curdomain>