diff options
Diffstat (limited to 'webcam/com/adobe/crypto/SHA1.as')
| -rw-r--r-- | webcam/com/adobe/crypto/SHA1.as | 534 |
1 files changed, 267 insertions, 267 deletions
diff --git a/webcam/com/adobe/crypto/SHA1.as b/webcam/com/adobe/crypto/SHA1.as index 823ea5d..793157d 100644 --- a/webcam/com/adobe/crypto/SHA1.as +++ b/webcam/com/adobe/crypto/SHA1.as @@ -1,268 +1,268 @@ -/*
-Adobe Systems Incorporated(r) Source Code License Agreement
-Copyright(c) 2005 Adobe Systems Incorporated. All rights reserved.
-
-Please read this Source Code License Agreement carefully before using
-the source code.
-
-Adobe Systems Incorporated grants to you a perpetual, worldwide, non-exclusive,
-no-charge, royalty-free, irrevocable copyright license, to reproduce,
-prepare derivative works of, publicly display, publicly perform, and
-distribute this source code and such derivative works in source or
-object code form without any attribution requirements.
-
-The name "Adobe Systems Incorporated" must not be used to endorse or promote products
-derived from the source code without prior written permission.
-
-You agree to indemnify, hold harmless and defend Adobe Systems Incorporated from and
-against any loss, damage, claims or lawsuits, including attorney's
-fees that arise or result from your use or distribution of the source
-code.
-
-THIS SOURCE CODE IS PROVIDED "AS IS" AND "WITH ALL FAULTS", WITHOUT
-ANY TECHNICAL SUPPORT OR ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING,
-BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
-FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ALSO, THERE IS NO WARRANTY OF
-NON-INFRINGEMENT, TITLE OR QUIET ENJOYMENT. IN NO EVENT SHALL MACROMEDIA
-OR ITS SUPPLIERS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
-OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
-WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
-OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOURCE CODE, EVEN IF
-ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-*/
-
-package com.adobe.crypto
-{
- import com.adobe.utils.IntUtil;
- import flash.utils.ByteArray;
- import mx.utils.Base64Encoder;
-
- /**
- * US Secure Hash Algorithm 1 (SHA1)
- *
- * Implementation based on algorithm description at
- * http://www.faqs.org/rfcs/rfc3174.html
- */
- public class SHA1
- {
- /**
- * 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 IntUtil.toHex( byteArray.readInt(), true )
- + IntUtil.toHex( byteArray.readInt(), true )
- + IntUtil.toHex( byteArray.readInt(), true )
- + IntUtil.toHex( byteArray.readInt(), true )
- + IntUtil.toHex( byteArray.readInt(), true );
- }
-
- /**
- * Performs the SHA1 hash algorithm on a ByteArray.
- *
- * @param data The ByteArray data to hash
- * @return A string containing the hash value of data
- * @langversion ActionScript 3.0
- * @playerversion 9.0
- */
- public static function hashBytes( data:ByteArray ):String
- {
- var blocks:Array = SHA1.createBlocksFromByteArray( data );
- var byteArray:ByteArray = hashBlocks(blocks);
-
- return IntUtil.toHex( byteArray.readInt(), true )
- + IntUtil.toHex( byteArray.readInt(), true )
- + IntUtil.toHex( byteArray.readInt(), true )
- + IntUtil.toHex( byteArray.readInt(), true )
- + IntUtil.toHex( byteArray.readInt(), true );
- }
-
- /**
- * Performs the SHA1 hash algorithm on a string, then does
- * Base64 encoding on the result.
- *
- * @param s The string to hash
- * @return The base64 encoded hash value of s
- * @langversion ActionScript 3.0
- * @playerversion 9.0
- * @tiptext
- */
- public static function hashToBase64( s:String ):String
- {
- var blocks:Array = SHA1.createBlocksFromString( s );
- var byteArray:ByteArray = hashBlocks(blocks);
-
- // ByteArray.toString() returns the contents as a UTF-8 string,
- // which we can't use because certain byte sequences might trigger
- // a UTF-8 conversion. Instead, we convert the bytes to characters
- // one by one.
- 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 hashBlocks( blocks:Array ):ByteArray
- {
- // initialize the h's
- 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 );
-
- // loop over all of the blocks
- for ( var i:int = 0; i < len; i += 16 ) {
-
- // 6.1.c
- var a:int = h0;
- var b:int = h1;
- var c:int = h2;
- var d:int = h3;
- var e:int = h4;
-
- // 80 steps to process each block
- // TODO: unroll for faster execution, or 4 loops of
- // 20 each to avoid the k and f function calls
- 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 ] = IntUtil.rol( w[ t - 3 ] ^ w[ t - 8 ] ^ w[ t - 14 ] ^ w[ t - 16 ], 1 );
- }
-
- // 6.1.d
- var temp:int = IntUtil.rol( a, 5 ) + f( t, b, c, d ) + e + int( w[ t ] ) + k( t );
-
- e = d;
- d = c;
- c = IntUtil.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;
- return byteArray;
- }
-
- /**
- * Performs the logical function based on t
- */
- 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;
- }
-
- /**
- * Determines the constant value based on t
- */
- 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;
- }
-
- /**
- * Converts a ByteArray to a sequence of 16-word blocks
- * that we'll do the processing on. Appends padding
- * and length in the process.
- *
- * @param data The data to split into blocks
- * @return An array containing the blocks into which data was split
- */
- 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;
- }
-
- /**
- * Converts a string to a sequence of 16-word blocks
- * that we'll do the processing on. Appends padding
- * and length in the process.
- *
- * @param s The string to split into blocks
- * @return An array containing the blocks that s was split into.
- */
- 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;
- }
-
- }
+/* +Adobe Systems Incorporated(r) Source Code License Agreement +Copyright(c) 2005 Adobe Systems Incorporated. All rights reserved. + +Please read this Source Code License Agreement carefully before using +the source code. + +Adobe Systems Incorporated grants to you a perpetual, worldwide, non-exclusive, +no-charge, royalty-free, irrevocable copyright license, to reproduce, +prepare derivative works of, publicly display, publicly perform, and +distribute this source code and such derivative works in source or +object code form without any attribution requirements. + +The name "Adobe Systems Incorporated" must not be used to endorse or promote products +derived from the source code without prior written permission. + +You agree to indemnify, hold harmless and defend Adobe Systems Incorporated from and +against any loss, damage, claims or lawsuits, including attorney's +fees that arise or result from your use or distribution of the source +code. + +THIS SOURCE CODE IS PROVIDED "AS IS" AND "WITH ALL FAULTS", WITHOUT +ANY TECHNICAL SUPPORT OR ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, +BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS +FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ALSO, THERE IS NO WARRANTY OF +NON-INFRINGEMENT, TITLE OR QUIET ENJOYMENT. IN NO EVENT SHALL MACROMEDIA +OR ITS SUPPLIERS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, +EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, +PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; +OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, +WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR +OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOURCE CODE, EVEN IF +ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +*/ + +package com.adobe.crypto +{ + import com.adobe.utils.IntUtil; + import flash.utils.ByteArray; + import mx.utils.Base64Encoder; + + /** + * US Secure Hash Algorithm 1 (SHA1) + * + * Implementation based on algorithm description at + * http://www.faqs.org/rfcs/rfc3174.html + */ + public class SHA1 + { + /** + * 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 IntUtil.toHex( byteArray.readInt(), true ) + + IntUtil.toHex( byteArray.readInt(), true ) + + IntUtil.toHex( byteArray.readInt(), true ) + + IntUtil.toHex( byteArray.readInt(), true ) + + IntUtil.toHex( byteArray.readInt(), true ); + } + + /** + * Performs the SHA1 hash algorithm on a ByteArray. + * + * @param data The ByteArray data to hash + * @return A string containing the hash value of data + * @langversion ActionScript 3.0 + * @playerversion 9.0 + */ + public static function hashBytes( data:ByteArray ):String + { + var blocks:Array = SHA1.createBlocksFromByteArray( data ); + var byteArray:ByteArray = hashBlocks(blocks); + + return IntUtil.toHex( byteArray.readInt(), true ) + + IntUtil.toHex( byteArray.readInt(), true ) + + IntUtil.toHex( byteArray.readInt(), true ) + + IntUtil.toHex( byteArray.readInt(), true ) + + IntUtil.toHex( byteArray.readInt(), true ); + } + + /** + * Performs the SHA1 hash algorithm on a string, then does + * Base64 encoding on the result. + * + * @param s The string to hash + * @return The base64 encoded hash value of s + * @langversion ActionScript 3.0 + * @playerversion 9.0 + * @tiptext + */ + public static function hashToBase64( s:String ):String + { + var blocks:Array = SHA1.createBlocksFromString( s ); + var byteArray:ByteArray = hashBlocks(blocks); + + // ByteArray.toString() returns the contents as a UTF-8 string, + // which we can't use because certain byte sequences might trigger + // a UTF-8 conversion. Instead, we convert the bytes to characters + // one by one. + 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 hashBlocks( blocks:Array ):ByteArray + { + // initialize the h's + 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 ); + + // loop over all of the blocks + for ( var i:int = 0; i < len; i += 16 ) { + + // 6.1.c + var a:int = h0; + var b:int = h1; + var c:int = h2; + var d:int = h3; + var e:int = h4; + + // 80 steps to process each block + // TODO: unroll for faster execution, or 4 loops of + // 20 each to avoid the k and f function calls + 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 ] = IntUtil.rol( w[ t - 3 ] ^ w[ t - 8 ] ^ w[ t - 14 ] ^ w[ t - 16 ], 1 ); + } + + // 6.1.d + var temp:int = IntUtil.rol( a, 5 ) + f( t, b, c, d ) + e + int( w[ t ] ) + k( t ); + + e = d; + d = c; + c = IntUtil.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; + return byteArray; + } + + /** + * Performs the logical function based on t + */ + 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; + } + + /** + * Determines the constant value based on t + */ + 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; + } + + /** + * Converts a ByteArray to a sequence of 16-word blocks + * that we'll do the processing on. Appends padding + * and length in the process. + * + * @param data The data to split into blocks + * @return An array containing the blocks into which data was split + */ + 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; + } + + /** + * Converts a string to a sequence of 16-word blocks + * that we'll do the processing on. Appends padding + * and length in the process. + * + * @param s The string to split into blocks + * @return An array containing the blocks that s was split into. + */ + 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; + } + + } }
\ No newline at end of file |
