1/* 2 * Copyright (C) 2014 Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#ifndef WebCryptoKeyAlgorithmParams_h 32#define WebCryptoKeyAlgorithmParams_h 33 34#include "WebCommon.h" 35#include "WebCryptoAlgorithm.h" 36#include "WebVector.h" 37 38namespace blink { 39 40// Interface used for serializing WebCryptoKeyAlgorithmParams to a javascript 41// dictionary. 42class WebCryptoKeyAlgorithmDictionary { 43public: 44 virtual ~WebCryptoKeyAlgorithmDictionary() { } 45 46 virtual void setString(const char*, const char*) = 0; 47 virtual void setUint(const char*, unsigned) = 0; 48 virtual void setAlgorithm(const char*, const WebCryptoAlgorithm&) = 0; 49 virtual void setUint8Array(const char*, const WebVector<unsigned char>&) = 0; 50}; 51 52enum WebCryptoKeyAlgorithmParamsType { 53 WebCryptoKeyAlgorithmParamsTypeNone, 54 WebCryptoKeyAlgorithmParamsTypeHmac, 55 WebCryptoKeyAlgorithmParamsTypeAes, 56 WebCryptoKeyAlgorithmParamsTypeRsaHashed 57}; 58 59class WebCryptoKeyAlgorithmParams { 60public: 61 virtual ~WebCryptoKeyAlgorithmParams() { } 62 virtual WebCryptoKeyAlgorithmParamsType type() const 63 { 64 return WebCryptoKeyAlgorithmParamsTypeNone; 65 } 66 67 virtual void writeToDictionary(WebCryptoKeyAlgorithmDictionary*) const = 0; 68}; 69 70class WebCryptoAesKeyAlgorithmParams : public WebCryptoKeyAlgorithmParams { 71public: 72 explicit WebCryptoAesKeyAlgorithmParams(unsigned short lengthBits) 73 : m_lengthBits(lengthBits) 74 { 75 } 76 77 unsigned short lengthBits() const 78 { 79 return m_lengthBits; 80 } 81 82 virtual WebCryptoKeyAlgorithmParamsType type() const 83 { 84 return WebCryptoKeyAlgorithmParamsTypeAes; 85 } 86 87 virtual void writeToDictionary(WebCryptoKeyAlgorithmDictionary* dict) const 88 { 89 dict->setUint("length", m_lengthBits); 90 } 91 92private: 93 unsigned short m_lengthBits; 94}; 95 96class WebCryptoHmacKeyAlgorithmParams : public WebCryptoKeyAlgorithmParams { 97public: 98 WebCryptoHmacKeyAlgorithmParams(const WebCryptoAlgorithm& hash, unsigned lengthBits) 99 : m_hash(hash) 100 , m_lengthBits(lengthBits) 101 { 102 } 103 104 const WebCryptoAlgorithm& hash() const 105 { 106 return m_hash; 107 } 108 109 unsigned lengthBits() const 110 { 111 return m_lengthBits; 112 } 113 114 virtual WebCryptoKeyAlgorithmParamsType type() const 115 { 116 return WebCryptoKeyAlgorithmParamsTypeHmac; 117 } 118 119 virtual void writeToDictionary(WebCryptoKeyAlgorithmDictionary* dict) const 120 { 121 dict->setAlgorithm("hash", m_hash); 122 dict->setUint("length", m_lengthBits); 123 } 124 125private: 126 WebCryptoAlgorithm m_hash; 127 unsigned m_lengthBits; 128}; 129 130class WebCryptoRsaHashedKeyAlgorithmParams : public WebCryptoKeyAlgorithmParams { 131public: 132 WebCryptoRsaHashedKeyAlgorithmParams(unsigned modulusLengthBits, const unsigned char* publicExponent, unsigned publicExponentSize, const WebCryptoAlgorithm& hash) 133 : m_modulusLengthBits(modulusLengthBits) 134 , m_publicExponent(publicExponent, publicExponentSize) 135 , m_hash(hash) 136 { 137 } 138 139 unsigned modulusLengthBits() const 140 { 141 return m_modulusLengthBits; 142 } 143 144 const WebVector<unsigned char>& publicExponent() const 145 { 146 return m_publicExponent; 147 } 148 149 const WebCryptoAlgorithm& hash() const 150 { 151 return m_hash; 152 } 153 154 virtual WebCryptoKeyAlgorithmParamsType type() const 155 { 156 return WebCryptoKeyAlgorithmParamsTypeRsaHashed; 157 } 158 159 virtual void writeToDictionary(WebCryptoKeyAlgorithmDictionary* dict) const 160 { 161 dict->setAlgorithm("hash", m_hash); 162 dict->setUint("modulusLength", m_modulusLengthBits); 163 dict->setUint8Array("publicExponent", m_publicExponent); 164 } 165 166private: 167 unsigned m_modulusLengthBits; 168 WebVector<unsigned char> m_publicExponent; 169 WebCryptoAlgorithm m_hash; 170}; 171 172} // namespace blink 173 174#endif 175