SHA1 加密源码
SHA1加密（Java版）
测试类：
SHA1加密（Flex版）
测试类：
Flex使用mx.utils.SHA256类来实现SHA256加密：
测试类：
public class SHA1 {
private static final boolean hexcase = false;
private static final int chrsz = 8;
// 得到字符串SHA-1值的方法
public static String hex_sha1(String s) {
s = (s == null) ? "" : s;
return binb2hex(core_sha1(str2binb(s), s.length() * chrsz));
}
private static String binb2hex(int[] binarray) {
String hex_tab = hexcase ? "0123456789abcdef" : "0123456789abcdef";
String str = "";
for (int i = 0; i < binarray.length * 4; i++) {
char a = (char) hex_tab.charAt((binarray[i >> 2] >> ((3 - i % 4) * 8 + 4)) & 0xf);
char b = (char) hex_tab.charAt((binarray[i >> 2] >> ((3 - i % 4) * 8)) & 0xf);
str += (new Character(a).toString() + new Character(b).toString());
}
return str;
}
private static String binb2str(int[] bin) {
String str = "";
int mask = (1 << chrsz) - 1;
for (int i = 0; i < bin.length * 32; i += chrsz) {
str += (char) ((bin[i >> 5] >>> (24 - i % 32)) & mask);
}
return str;
}
private static int[] core_sha1(int[] x, int len) {
int size = (len >> 5);
x = strechbinarray(x, size);
x[len >> 5] |= 0x80 << (24 - len % 32);
size = ((len + 64 >> 9) << 4) + 15;
x = strechbinarray(x, size);
x[((len + 64 >> 9) << 4) + 15] = len;
int[] w = new int[80];
int a = 1732584193;
int b = -271733879;
int c = -1732584194;
int d = 271733878;
int e = -1009589776;
for (int i = 0; i < x.length; i += 16) {
int olda = a;
int oldb = b;
int oldc = c;
int oldd = d;
int olde = e;
for (int j = 0; j < 80; j++) {
if (j < 16) {
w[j] = x[i + j];
} else {
w[j] = rol(w[j - 3] ^ w[j - 8] ^ w[j - 14] ^ w[j - 16], 1);
}
int t = safe_add(safe_add(rol(a, 5), sha1_ft(j, b, c, d)), safe_add(safe_add(e, w[j]), sha1_kt(j)));
e = d;
d = c;
c = rol(b, 30);
b = a;
a = t;
}
a = safe_add(a, olda);
b = safe_add(b, oldb);
c = safe_add(c, oldc);
d = safe_add(d, oldd);
e = safe_add(e, olde);
}
int[] retval = new int[5];
retval[0] = a;
retval[1] = b;
retval[2] = c;
retval[3] = d;
retval[4] = e;
return retval;
}
private static int rol(int num, int cnt) {
return (num << cnt) | (num >>> (32 - cnt));
}
private static int safe_add(int x, int y) {
int lsw = (int) (x & 0xffff) + (int) (y & 0xffff);
int msw = (x >> 16) + (y >> 16) + (lsw >> 16);
return (msw << 16) | (lsw & 0xffff);
}
private static int sha1_ft(int t, int b, int c, int d) {
if (t < 20)
return (b & c) | ((~b) & d);
if (t < 40)
return b ^ c ^ d;
if (t < 60)
return (b & c) | (b & d) | (c & d);
return b ^ c ^ d;
}
private static int sha1_kt(int t) {
return (t < 20) ? 1518500249 : (t < 40) ? 1859775393 : (t < 60) ? -1894007588 : -899497514;
}
public static String str_sha1(String s) {
s = (s == null) ? "" : s;
return binb2str(core_sha1(str2binb(s), s.length() * chrsz));
}
private static int[] str2binb(String str) {
str = (str == null) ? "" : str;
int[] tmp = new int[str.length() * chrsz];
int mask = (1 << chrsz) - 1;
for (int i = 0; i < str.length() * chrsz; i += chrsz) {
tmp[i >> 5] |= ((int) (str.charAt(i / chrsz)) & mask) << (24 - i % 32);
}
int len = 0;
for (int i = 0; i < tmp.length && tmp[i] != 0; i++, len++)
;
int[] bin = new int[len];
for (int i = 0; i < len; i++) {
bin[i] = tmp[i];
}
return bin;
}
private static int[] strechbinarray(int[] oldbin, int size) {
int currlen = oldbin.length;
if (currlen >= size + 1) {
return oldbin;
}
int[] newbin = new int[size + 1];
for (int i = 0; i < size; newbin[i] = 0, i++)
;
for (int i = 0; i < currlen; i++) {
newbin[i] = oldbin[i];
}
return newbin;
}
}
测试类：
public static void main(String args[]) {
System.out.println(SHA1.hex_sha1("123456"));
}
SHA1加密（Flex版）
package
{
import flash.utils.ByteArray;
import mx.utils.Base64Encoder;
/**
* US Secure Hash Algorithm 1 (SHA1)
*/
public class SHA1
{
private static var hexChars:String = "0123456789abcdef";
public static var digest:ByteArray;
/**
* Performs the SHA1 hash algorithm on a string.
*
* @param s The string to hash
* @return A string containing the hash value of s
* @langversion ActionScript 3.0
* @playerversion 9.0
* @tiptext
*/
public static function hash( s:String ):String
{
var blocks:Array = createBlocksFromString( s );
var byteArray:ByteArray = hashBlocks( blocks );
return toHex( byteArray.readInt(), true )
+ toHex( byteArray.readInt(), true )
+ toHex( byteArray.readInt(), true )
+ toHex( byteArray.readInt(), true )
+ toHex( byteArray.readInt(), true );
}
public static function hashBytes( data:ByteArray ):String
{
var blocks:Array = SHA1.createBlocksFromByteArray( data );
var byteArray:ByteArray = hashBlocks(blocks);
return toHex( byteArray.readInt(), true )
+ toHex( byteArray.readInt(), true )
+ toHex( byteArray.readInt(), true )
+ toHex( byteArray.readInt(), true )
+ toHex( byteArray.readInt(), true );
}
public static function hashToBase64( s:String ):String
{
var blocks:Array = SHA1.createBlocksFromString( s );
var byteArray:ByteArray = hashBlocks(blocks);
var charsInByteArray:String = "";
byteArray.position = 0;
for (var j:int = 0; j < byteArray.length; j++)
{
var byte:uint = byteArray.readUnsignedByte();
charsInByteArray += String.fromCharCode(byte);
}
var encoder:Base64Encoder = new Base64Encoder();
encoder.encode(charsInByteArray);
return encoder.flush();
}
private static function rol ( x:int, n:int ):int {
return ( x << n ) | ( x >>> ( 32 - n ) );
}
private static function ror ( x:int, n:int ):uint {
var nn:int = 32 - n;
return ( x << nn ) | ( x >>> ( 32 - nn ) );
}
private static function toHex( n:int, bigEndian:Boolean = false ):String {
var s:String = "";
if ( bigEndian ) {
for ( var i:int = 0; i < 4; i++ ) {
s += hexChars.charAt( ( n >> ( ( 3 - i ) * 8 + 4 ) ) & 0xF )
+ hexChars.charAt( ( n >> ( ( 3 - i ) * 8 ) ) & 0xF );
}
} else {
for ( var x:int = 0; x < 4; x++ ) {
s += hexChars.charAt( ( n >> ( x * 8 + 4 ) ) & 0xF )
+ hexChars.charAt( ( n >> ( x * 8 ) ) & 0xF );
}
}
return s;
}
private static function hashBlocks( blocks:Array ):ByteArray
{
var h0:int = 0x67452301;
var h1:int = 0xefcdab89;
var h2:int = 0x98badcfe;
var h3:int = 0x10325476;
var h4:int = 0xc3d2e1f0;
var len:int = blocks.length;
var w:Array = new Array( 80 );
for ( var i:int = 0; i < len; i += 16 ) {
var a:int = h0;
var b:int = h1;
var c:int = h2;
var d:int = h3;
var e:int = h4;
for ( var t:int = 0; t < 80; t++ ) {
if ( t < 16 ) {
// 6.1.a
w[ t ] = blocks[ i + t ];
} else {
// 6.1.b
w[ t ] = rol( w[ t - 3 ] ^ w[ t - 8 ] ^ w[ t - 14 ] ^ w[ t - 16 ], 1 );
}
// 6.1.d
var temp:int = rol( a, 5 ) + f( t, b, c, d ) + e + int( w[ t ] ) + k( t );
e = d;
d = c;
c = rol( b, 30 );
b = a;
a = temp;
}
// 6.1.e
h0 += a;
h1 += b;
h2 += c;
h3 += d;
h4 += e;
}
var byteArray:ByteArray = new ByteArray();
byteArray.writeInt(h0);
byteArray.writeInt(h1);
byteArray.writeInt(h2);
byteArray.writeInt(h3);
byteArray.writeInt(h4);
byteArray.position = 0;
digest = new ByteArray();
digest.writeBytes(byteArray);
digest.position = 0;
return byteArray;
}
private static function f( t:int, b:int, c:int, d:int ):int {
if ( t < 20 ) {
return ( b & c ) | ( ~b & d );
} else if ( t < 40 ) {
return b ^ c ^ d;
} else if ( t < 60 ) {
return ( b & c ) | ( b & d ) | ( c & d );
}
return b ^ c ^ d;
}
private static function k( t:int ):int {
if ( t < 20 ) {
return 0x5a827999;
} else if ( t < 40 ) {
return 0x6ed9eba1;
} else if ( t < 60 ) {
return 0x8f1bbcdc;
}
return 0xca62c1d6;
}
private static function createBlocksFromByteArray( data:ByteArray ):Array
{
var oldPosition:int = data.position;
data.position = 0;
var blocks:Array = new Array();
var len:int = data.length * 8;
var mask:int = 0xFF; // ignore hi byte of characters > 0xFF
for( var i:int = 0; i < len; i += 8 )
{
blocks[ i >> 5 ] |= ( data.readByte() & mask ) << ( 24 - i % 32 );
}
// append padding and length
blocks[ len >> 5 ] |= 0x80 << ( 24 - len % 32 );
blocks[ ( ( ( len + 64 ) >> 9 ) << 4 ) + 15 ] = len;
data.position = oldPosition;
return blocks;
}
private static function createBlocksFromString( s:String ):Array
{
var blocks:Array = new Array();
var len:int = s.length * 8;
var mask:int = 0xFF; // ignore hi byte of characters > 0xFF
for( var i:int = 0; i < len; i += 8 ) {
blocks[ i >> 5 ] |= ( s.charCodeAt( i / 8 ) & mask ) << ( 24 - i % 32 );
}
// append padding and length
blocks[ len >> 5 ] |= 0x80 << ( 24 - len % 32 );
blocks[ ( ( ( len + 64 ) >> 9 ) << 4 ) + 15 ] = len;
return blocks;
}
}
}
测试类：
public function init():void{
Alert.show(SHA1.hash("123456"));
}
Flex使用mx.utils.SHA256类来实现SHA256加密：
package
{
import flash.utils.ByteArray;
import mx.utils.SHA256;
public class SHA256_Test
{
public function SHA256_Test(){}
public static function sha_256(source : String):String{
var encryption : String;
var ba : ByteArray = new ByteArray();
ba.writeUTFBytes(source);
encryption = mx.utils.SHA256.computeDigest(ba);
return encryption;
}
}
}
测试类：
public function init():void{
Alert.show(SHA256_Test.sha_256("123456"));
}