001/** 002 * 003 * Copyright (c) 2014, the Railo Company Ltd. All rights reserved. 004 * 005 * This library is free software; you can redistribute it and/or 006 * modify it under the terms of the GNU Lesser General Public 007 * License as published by the Free Software Foundation; either 008 * version 2.1 of the License, or (at your option) any later version. 009 * 010 * This library is distributed in the hope that it will be useful, 011 * but WITHOUT ANY WARRANTY; without even the implied warranty of 012 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 013 * Lesser General Public License for more details. 014 * 015 * You should have received a copy of the GNU Lesser General Public 016 * License along with this library. If not, see <http://www.gnu.org/licenses/>. 017 * 018 **/ 019/** 020 * Implements the CFML Function decrypt 021 */ 022package lucee.runtime.functions.other; 023 024import lucee.runtime.PageContext; 025import lucee.runtime.coder.Coder; 026import lucee.runtime.crypt.CFMXCompat; 027import lucee.runtime.crypt.Cryptor; 028import lucee.runtime.exp.PageException; 029import lucee.runtime.ext.function.Function; 030import lucee.runtime.op.Caster; 031 032 033public final class Decrypt implements Function { 034 035 036 public synchronized static String call( PageContext pc, String input, String key ) throws PageException { 037 038 return invoke(input, key, CFMXCompat.ALGORITHM_NAME, Cryptor.DEFAULT_ENCODING, null, 0); 039 } 040 041 042 public synchronized static String call( PageContext pc, String input, String key, String algorithm ) throws PageException { 043 044 return invoke(input, key, algorithm, Cryptor.DEFAULT_ENCODING, null, 0); 045 } 046 047 048 public synchronized static String call( PageContext pc, String input, String key, String algorithm, String encoding ) throws PageException { 049 050 return invoke( input, key, algorithm, encoding, null, 0 ); 051 } 052 053 054 public synchronized static String call( PageContext pc, String input, String key, String algorithm, String encoding, Object ivOrSalt ) throws PageException { 055 056 return invoke(input, key, algorithm, encoding, ivOrSalt, 0); 057 } 058 059 060 /** 061 * call with all optional args 062 */ 063 public synchronized static String call( PageContext pc, String input, String key, String algorithm, String encoding, Object ivOrSalt, double iterations ) throws PageException { 064 065 return invoke( input, key, algorithm, encoding, ivOrSalt, Caster.toInteger( iterations ) ); 066 } 067 068 069 public synchronized static String invoke( String input, String key, String algorithm, String encoding, Object ivOrSalt, int iterations ) throws PageException { 070 071 try { 072 073 if ( CFMXCompat.isCfmxCompat( algorithm ) ) 074 return new String( invoke( Coder.decode( encoding, input ), key, algorithm, null, 0 ), Cryptor.DEFAULT_CHARSET ); 075 076 byte[] baIVS = null; 077 if ( ivOrSalt instanceof String ) 078 baIVS = ((String)ivOrSalt).getBytes( Cryptor.DEFAULT_CHARSET ); 079 else if ( ivOrSalt != null ) 080 baIVS = Caster.toBinary( ivOrSalt ); 081 082 return Cryptor.decrypt( input, key, algorithm, baIVS, iterations, encoding, Cryptor.DEFAULT_CHARSET ); 083 } 084 catch (Throwable t ) { 085 throw Caster.toPageException( t ); 086 } 087 } 088 089 090 public synchronized static byte[] invoke( byte[] input, String key, String algorithm, byte[] ivOrSalt, int iterations ) throws PageException { 091 092 if ( CFMXCompat.isCfmxCompat( algorithm ) ) 093 return new CFMXCompat().transformString( key, input ); 094 095 return Cryptor.decrypt( input, key, algorithm, ivOrSalt, iterations ); 096 } 097}