高级加密解密标准AES加密secret.js代码

// sample key to expand: // 2b 7e 15 16 28 ae d2 a6 ab f7 15 88 09 cf 4f 3c // sample data: // 32 43 f6 a8 88 5a 30 8d 31 31 98 a2 e0 37 07 34 // output: // 39 25 84 1d 02 dc 09 fb dc 11 85 97 19 6a 0b 32 // sample key/data: // PLAINTEXT: 00112233445566778899aabbccddeeff // KEY: 000102030405060708090a0b0c0d0e0f // OUTPUT: 69c4e0d86a7b0430d8cdb78070b4c55a // accumulate values to put into text area var accumulated_output_info; // add a labeled value to the text area function accumulate_output( str ) { accumulated_output_info = accumulated_output_info + str + "\n"; } // convert a 8-bit value to a string function cvt_hex8( val ) { var vh = (val>>>4)&0x0f; return vh.toString(16) + (val&0x0f).toString(16); } // convert a 32-bit value to a 8-char hex string function cvt_hex32( val ) { var str=""; var i; var v; for( i=7; i>=0; i-- ) { v = (val>>>(i*4))&0x0f; str += v.toString(16); } return str; } // convert a two-digit hex value to a number function cvt_byte( str ) { // get the first hex digit var val1 = str.charCodeAt(0); // do some error checking if ( val1 >= 48 && val1 <= 57 ) // have a valid digit 0-9 val1 -= 48; else if ( val1 >= 65 && val1 <= 70 ) // have a valid digit A-F val1 -= 55; else if ( val1 >= 97 && val1 <= 102 ) // have a valid digit A-F val1 -= 87; else { // not 0-9 or A-F, complain window.alert( str.charAt(1)+" is not a valid hex digit" ); return -1; } // get the second hex digit var val2 = str.charCodeAt(1); // do some error checking if ( val2 >= 48 && val2 <= 57 ) // have a valid digit 0-9 val2 -= 48; else if ( val2 >= 65 && val2 <= 70 ) // have a valid digit A-F val2 -= 55; else if ( val2 >= 97 && val2 <= 102 ) // have a valid digit A-F val2 -= 87; else { // not 0-9 or A-F, complain window.alert( str.charAt(2)+" is not a valid hex digit" ); return -1; } // all is ok, return the value return val1*16 + val2; } // add a byte to the output function accumulate_byte( label, val ) { accumulated_output_info += label + cvt_hex8(val) + "\n"; } // add a word to the output function accumulate_wordarray( label, ary ) { var i, j; accumulated_output_info += label + " "; // process the four elements in this word for( j=0; j<4; j++ ) accumulated_output_info += " " + cvt_hex8( ary[j] ); // mark the end of the word accumulated_output_info += "\n"; } // add an array to the output function accumulate_array( label, ary ) { var i, j; var spacer=""; // build a set of spaces of equal length to the label while( spacer.length < label.length ) spacer += " "; // build the table for( i=0; i<16; i+= 4 ) { // add label/spaces if ( i== 0 ) accumulated_output_info += label + " "; else accumulated_output_info += spacer + " "; // process the four elements in this "row" for( j=0; j<4; j++ ) accumulated_output_info += " " + cvt_hex8( ary[i+j] ); // mark the end of this row accumulated_output_info += "\n"; } } // S-Box substitution table var S_enc = new Array( 0x63, 0x7c, 0x77, 0x7b, 0xf2, 0x6b, 0x6f, 0xc5, 0x30, 0x01, 0x67, 0x2b, 0xfe, 0xd7, 0xab, 0x76, 0xca, 0x82, 0xc9, 0x7d, 0xfa, 0x59, 0x47, 0xf0, 0xad, 0xd4, 0xa2, 0xaf, 0x9c, 0xa4, 0x72, 0xc0, 0xb7, 0xfd, 0x93, 0x26, 0x36, 0x3f, 0xf7, 0xcc, 0x34, 0xa5, 0xe5, 0xf1, 0x71, 0xd8, 0x31, 0x15, 0x04, 0xc7, 0x23, 0xc3, 0x18, 0x96, 0x05, 0x9a, 0x07, 0x12, 0x80, 0xe2, 0xeb, 0x27, 0xb2, 0x75, 0x09, 0x83, 0x2c, 0x1a, 0x1b, 0x6e, 0x5a, 0xa0, 0x52, 0x3b, 0xd6, 0xb3, 0x29, 0xe3, 0x2f, 0x84, 0x53, 0xd1, 0x00, 0xed, 0x20, 0xfc, 0xb1, 0x5b, 0x6a, 0xcb, 0xbe, 0x39, 0x4a, 0x4c, 0x58, 0xcf, 0xd0, 0xef, 0xaa, 0xfb, 0x43, 0x4d, 0x33, 0x85, 0x45, 0xf9, 0x02, 0x7f, 0x50, 0x3c, 0x9f, 0xa8, 0x51, 0xa3, 0x40, 0x8f, 0x92, 0x9d, 0x38, 0xf5, 0xbc, 0xb6, 0xda, 0x21, 0x10, 0xff, 0xf3, 0xd2, 0xcd, 0x0c, 0x13, 0xec, 0x5f, 0x97, 0x44, 0x17, 0xc4, 0xa7, 0x7e, 0x3d, 0x64, 0x5d, 0x19, 0x73, 0x60, 0x81, 0x4f, 0xdc, 0x22, 0x2a, 0x90, 0x88, 0x46, 0xee, 0xb8, 0x14, 0xde, 0x5e, 0x0b, 0xdb, 0xe0, 0x32, 0x3a, 0x0a, 0x49, 0x06, 0x24, 0x5c, 0xc2, 0xd3, 0xac, 0x62, 0x91, 0x95, 0xe4, 0x79, 0xe7, 0xc8, 0x37, 0x6d, 0x8d, 0xd5, 0x4e, 0xa9, 0x6c, 0x56, 0xf4, 0xea, 0x65, 0x7a, 0xae, 0x08, 0xba, 0x78, 0x25, 0x2e, 0x1c, 0xa6, 0xb4, 0xc6, 0xe8, 0xdd, 0x74, 0x1f, 0x4b, 0xbd, 0x8b, 0x8a, 0x70, 0x3e, 0xb5, 0x66, 0x48, 0x03, 0xf6, 0x0e, 0x61, 0x35, 0x57, 0xb9, 0x86, 0xc1, 0x1d, 0x9e, 0xe1, 0xf8, 0x98, 0x11, 0x69, 0xd9, 0x8e, 0x94, 0x9b, 0x1e, 0x87, 0xe9, 0xce, 0x55, 0x28, 0xdf, 0x8c, 0xa1, 0x89, 0x0d, 0xbf, 0xe6, 0x42, 0x68, 0x41, 0x99, 0x2d, 0x0f, 0xb0, 0x54, 0xbb, 0x16); // inverse S-Box for decryptions var S_dec = new Array( 0x52, 0x09, 0x6a, 0xd5, 0x30, 0x36, 0xa5, 0x38, 0xbf, 0x40, 0xa3, 0x9e, 0x81, 0xf3, 0xd7, 0xfb, 0x7c, 0xe3, 0x39, 0x82, 0x9b, 0x2f, 0xff, 0x87, 0x34, 0x8e, 0x43, 0x44, 0xc4, 0xde, 0xe9, 0xcb, 0x54, 0x7b, 0x94, 0x32, 0xa6, 0xc2, 0x23, 0x3d, 0xee, 0x4c, 0x95, 0x0b, 0x42, 0xfa, 0xc3, 0x4e, 0x08, 0x2e, 0xa1, 0x66, 0x28, 0xd9, 0x24, 0xb2, 0x76, 0x5b, 0xa2, 0x49, 0x6d, 0x8b, 0xd1, 0x25, 0x72, 0xf8, 0xf6, 0x64, 0x86, 0x68, 0x98, 0x16, 0xd4, 0xa4, 0x5c, 0xcc, 0x5d, 0x65, 0xb6, 0x92, 0x6c, 0x70, 0x48, 0x50, 0xfd, 0xed, 0xb9, 0xda, 0x5e, 0x15, 0x46, 0x57, 0xa7, 0x8d, 0x9d, 0x84, 0x90, 0xd8, 0xab, 0x00, 0x8c, 0xbc, 0xd3, 0x0a, 0xf7, 0xe4, 0x58, 0x05, 0xb8, 0xb3, 0x45, 0x06, 0xd0, 0x2c, 0x1e, 0x8f, 0xca, 0x3f, 0x0f, 0x02, 0xc1, 0xaf, 0xbd, 0x03, 0x01, 0x13, 0x8a, 0x6b, 0x3a, 0x91, 0x11, 0x41, 0x4f, 0x67, 0xdc, 0xea, 0x97, 0xf2, 0xcf, 0xce, 0xf0, 0xb4, 0xe6, 0x73, 0x96, 0xac, 0x74, 0x22, 0xe7, 0xad, 0x35, 0x85, 0xe2, 0xf9, 0x37, 0xe8, 0x1c, 0x75, 0xdf, 0x6e, 0x47, 0xf1, 0x1a, 0x71, 0x1d, 0x29, 0xc5, 0x89, 0x6f, 0xb7, 0x62, 0x0e, 0xaa, 0x18, 0xbe, 0x1b, 0xfc, 0x56, 0x3e, 0x4b, 0xc6, 0xd2, 0x79, 0x20, 0x9a, 0xdb, 0xc0, 0xfe, 0x78, 0xcd, 0x5a, 0xf4, 0x1f, 0xdd, 0xa8, 0x33, 0x88, 0x07, 0xc7, 0x31, 0xb1, 0x12, 0x10, 0x59, 0x27, 0x80, 0xec, 0x5f, 0x60, 0x51, 0x7f, 0xa9, 0x19, 0xb5, 0x4a, 0x0d, 0x2d, 0xe5, 0x7a, 0x9f, 0x93, 0xc9, 0x9c, 0xef, 0xa0, 0xe0, 0x3b, 0x4d, 0xae, 0x2a, 0xf5, 0xb0, 0xc8, 0xeb, 0xbb, 0x3c, 0x83, 0x53, 0x99, 0x61, 0x17, 0x2b, 0x04, 0x7e, 0xba, 0x77, 0xd6, 0x26, 0xe1, 0x69, 0x14, 0x63, 0x55, 0x21, 0x0c, 0x7d); // convert two-dimensional indicies to one-dim array indices var I00 = 0; var I01 = 1; var I02 = 2; var I03 = 3; var I10 = 4; var I11 = 5; var I12 = 6; var I13 = 7; var I20 = 8; var I21 = 9; var I22 = 10; var I23 = 11; var I30 = 12; var I31 = 13; var I32 = 14; var I33 = 15; // conversion function for non-constant subscripts // assume subscript range 0..3 function I(x,y) { return (x*4) + y; } // remove spaces from input function remove_spaces( instr ) { var i; var outstr=""; for( i=0; i<instr.length; i++ ) if ( instr.charAt(i) != " " ) // not a space, include it outstr += instr.charAt(i); return outstr; } // get the message to encrypt/decrypt or the key // return as a 16-byte array function get_value( lbl, str, isASCII ) { var dbyte = new Array(16); var i; var val; // one hex digit if ( isASCII ) { // check length of data if ( str.length > 16 ) { window.alert( lbl + " is too long, using the first 16 ASCII characters" ); } // have ASCII data // 16 characters? if ( str.length >= 16 ) { // 16 or more characters for( i=0; i<16; i++ ) { dbyte[i] = str.charCodeAt(i); } } else {