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crypto-1.1.js
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crypto-1.1.js
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/*! crypto-1.1.7.js (c) 2013-2015 Kenji Urushima | kjur.github.com/jsrsasign/license
*/
/*
* crypto.js - Cryptographic Algorithm Provider class
*
* Copyright (c) 2013-2015 Kenji Urushima (kenji.urushima@gmail.com)
*
* This software is licensed under the terms of the MIT License.
* http://kjur.github.com/jsrsasign/license
*
* The above copyright and license notice shall be
* included in all copies or substantial portions of the Software.
*/
/**
* @fileOverview
* @name crypto-1.1.js
* @author Kenji Urushima kenji.urushima@gmail.com
* @version 1.1.7 (2015-Oct-11)
* @since jsrsasign 2.2
* @license <a href="http://kjur.github.io/jsrsasign/license/">MIT License</a>
*/
/**
* kjur's class library name space
* @name KJUR
* @namespace kjur's class library name space
*/
if (typeof KJUR == "undefined" || !KJUR) KJUR = {};
/**
* kjur's cryptographic algorithm provider library name space
* <p>
* This namespace privides following crytpgrahic classes.
* <ul>
* <li>{@link KJUR.crypto.MessageDigest} - Java JCE(cryptograhic extension) style MessageDigest class</li>
* <li>{@link KJUR.crypto.Signature} - Java JCE(cryptograhic extension) style Signature class</li>
* <li>{@link KJUR.crypto.Util} - cryptographic utility functions and properties</li>
* </ul>
* NOTE: Please ignore method summary and document of this namespace. This caused by a bug of jsdoc2.
* </p>
* @name KJUR.crypto
* @namespace
*/
if (typeof KJUR.crypto == "undefined" || !KJUR.crypto) KJUR.crypto = {};
/**
* static object for cryptographic function utilities
* @name KJUR.crypto.Util
* @class static object for cryptographic function utilities
* @property {Array} DIGESTINFOHEAD PKCS#1 DigestInfo heading hexadecimal bytes for each hash algorithms
* @property {Array} DEFAULTPROVIDER associative array of default provider name for each hash and signature algorithms
* @description
*/
KJUR.crypto.Util = new function() {
this.DIGESTINFOHEAD = {
'sha1': "3021300906052b0e03021a05000414",
'sha224': "302d300d06096086480165030402040500041c",
'sha256': "3031300d060960864801650304020105000420",
'sha384': "3041300d060960864801650304020205000430",
'sha512': "3051300d060960864801650304020305000440",
'md2': "3020300c06082a864886f70d020205000410",
'md5': "3020300c06082a864886f70d020505000410",
'ripemd160': "3021300906052b2403020105000414",
};
/*
* @since crypto 1.1.1
*/
this.DEFAULTPROVIDER = {
'md5': 'cryptojs',
'sha1': 'cryptojs',
'sha224': 'cryptojs',
'sha256': 'cryptojs',
'sha384': 'cryptojs',
'sha512': 'cryptojs',
'ripemd160': 'cryptojs',
'hmacmd5': 'cryptojs',
'hmacsha1': 'cryptojs',
'hmacsha224': 'cryptojs',
'hmacsha256': 'cryptojs',
'hmacsha384': 'cryptojs',
'hmacsha512': 'cryptojs',
'hmacripemd160': 'cryptojs',
'MD5withRSA': 'cryptojs/jsrsa',
'SHA1withRSA': 'cryptojs/jsrsa',
'SHA224withRSA': 'cryptojs/jsrsa',
'SHA256withRSA': 'cryptojs/jsrsa',
'SHA384withRSA': 'cryptojs/jsrsa',
'SHA512withRSA': 'cryptojs/jsrsa',
'RIPEMD160withRSA': 'cryptojs/jsrsa',
'MD5withECDSA': 'cryptojs/jsrsa',
'SHA1withECDSA': 'cryptojs/jsrsa',
'SHA224withECDSA': 'cryptojs/jsrsa',
'SHA256withECDSA': 'cryptojs/jsrsa',
'SHA384withECDSA': 'cryptojs/jsrsa',
'SHA512withECDSA': 'cryptojs/jsrsa',
'RIPEMD160withECDSA': 'cryptojs/jsrsa',
'SHA1withDSA': 'cryptojs/jsrsa',
'SHA224withDSA': 'cryptojs/jsrsa',
'SHA256withDSA': 'cryptojs/jsrsa',
'MD5withRSAandMGF1': 'cryptojs/jsrsa',
'SHA1withRSAandMGF1': 'cryptojs/jsrsa',
'SHA224withRSAandMGF1': 'cryptojs/jsrsa',
'SHA256withRSAandMGF1': 'cryptojs/jsrsa',
'SHA384withRSAandMGF1': 'cryptojs/jsrsa',
'SHA512withRSAandMGF1': 'cryptojs/jsrsa',
'RIPEMD160withRSAandMGF1': 'cryptojs/jsrsa',
};
/*
* @since crypto 1.1.2
*/
this.CRYPTOJSMESSAGEDIGESTNAME = {
'md5': 'CryptoJS.algo.MD5',
'sha1': 'CryptoJS.algo.SHA1',
'sha224': 'CryptoJS.algo.SHA224',
'sha256': 'CryptoJS.algo.SHA256',
'sha384': 'CryptoJS.algo.SHA384',
'sha512': 'CryptoJS.algo.SHA512',
'ripemd160': 'CryptoJS.algo.RIPEMD160'
};
/**
* get hexadecimal DigestInfo
* @name getDigestInfoHex
* @memberOf KJUR.crypto.Util
* @function
* @param {String} hHash hexadecimal hash value
* @param {String} alg hash algorithm name (ex. 'sha1')
* @return {String} hexadecimal string DigestInfo ASN.1 structure
*/
this.getDigestInfoHex = function(hHash, alg) {
if (typeof this.DIGESTINFOHEAD[alg] == "undefined")
throw "alg not supported in Util.DIGESTINFOHEAD: " + alg;
return this.DIGESTINFOHEAD[alg] + hHash;
};
/**
* get PKCS#1 padded hexadecimal DigestInfo
* @name getPaddedDigestInfoHex
* @memberOf KJUR.crypto.Util
* @function
* @param {String} hHash hexadecimal hash value of message to be signed
* @param {String} alg hash algorithm name (ex. 'sha1')
* @param {Integer} keySize key bit length (ex. 1024)
* @return {String} hexadecimal string of PKCS#1 padded DigestInfo
*/
this.getPaddedDigestInfoHex = function(hHash, alg, keySize) {
var hDigestInfo = this.getDigestInfoHex(hHash, alg);
var pmStrLen = keySize / 4; // minimum PM length
if (hDigestInfo.length + 22 > pmStrLen) // len(0001+ff(*8)+00+hDigestInfo)=22
throw "key is too short for SigAlg: keylen=" + keySize + "," + alg;
var hHead = "0001";
var hTail = "00" + hDigestInfo;
var hMid = "";
var fLen = pmStrLen - hHead.length - hTail.length;
for (var i = 0; i < fLen; i += 2) {
hMid += "ff";
}
var hPaddedMessage = hHead + hMid + hTail;
return hPaddedMessage;
};
/**
* get hexadecimal hash of string with specified algorithm
* @name hashString
* @memberOf KJUR.crypto.Util
* @function
* @param {String} s input string to be hashed
* @param {String} alg hash algorithm name
* @return {String} hexadecimal string of hash value
* @since 1.1.1
*/
this.hashString = function(s, alg) {
var md = new KJUR.crypto.MessageDigest({'alg': alg});
return md.digestString(s);
};
/**
* get hexadecimal hash of hexadecimal string with specified algorithm
* @name hashHex
* @memberOf KJUR.crypto.Util
* @function
* @param {String} sHex input hexadecimal string to be hashed
* @param {String} alg hash algorithm name
* @return {String} hexadecimal string of hash value
* @since 1.1.1
*/
this.hashHex = function(sHex, alg) {
var md = new KJUR.crypto.MessageDigest({'alg': alg});
return md.digestHex(sHex);
};
/**
* get hexadecimal SHA1 hash of string
* @name sha1
* @memberOf KJUR.crypto.Util
* @function
* @param {String} s input string to be hashed
* @return {String} hexadecimal string of hash value
* @since 1.0.3
*/
this.sha1 = function(s) {
var md = new KJUR.crypto.MessageDigest({'alg':'sha1', 'prov':'cryptojs'});
return md.digestString(s);
};
/**
* get hexadecimal SHA256 hash of string
* @name sha256
* @memberOf KJUR.crypto.Util
* @function
* @param {String} s input string to be hashed
* @return {String} hexadecimal string of hash value
* @since 1.0.3
*/
this.sha256 = function(s) {
var md = new KJUR.crypto.MessageDigest({'alg':'sha256', 'prov':'cryptojs'});
return md.digestString(s);
};
this.sha256Hex = function(s) {
var md = new KJUR.crypto.MessageDigest({'alg':'sha256', 'prov':'cryptojs'});
return md.digestHex(s);
};
/**
* get hexadecimal SHA512 hash of string
* @name sha512
* @memberOf KJUR.crypto.Util
* @function
* @param {String} s input string to be hashed
* @return {String} hexadecimal string of hash value
* @since 1.0.3
*/
this.sha512 = function(s) {
var md = new KJUR.crypto.MessageDigest({'alg':'sha512', 'prov':'cryptojs'});
return md.digestString(s);
};
this.sha512Hex = function(s) {
var md = new KJUR.crypto.MessageDigest({'alg':'sha512', 'prov':'cryptojs'});
return md.digestHex(s);
};
/**
* get hexadecimal MD5 hash of string
* @name md5
* @memberOf KJUR.crypto.Util
* @function
* @param {String} s input string to be hashed
* @return {String} hexadecimal string of hash value
* @since 1.0.3
*/
this.md5 = function(s) {
var md = new KJUR.crypto.MessageDigest({'alg':'md5', 'prov':'cryptojs'});
return md.digestString(s);
};
/**
* get hexadecimal RIPEMD160 hash of string
* @name ripemd160
* @memberOf KJUR.crypto.Util
* @function
* @param {String} s input string to be hashed
* @return {String} hexadecimal string of hash value
* @since 1.0.3
*/
this.ripemd160 = function(s) {
var md = new KJUR.crypto.MessageDigest({'alg':'ripemd160', 'prov':'cryptojs'});
return md.digestString(s);
};
/*
* @since 1.1.2
*/
this.getCryptoJSMDByName = function(s) {
};
};
/**
* MessageDigest class which is very similar to java.security.MessageDigest class
* @name KJUR.crypto.MessageDigest
* @class MessageDigest class which is very similar to java.security.MessageDigest class
* @param {Array} params parameters for constructor
* @description
* <br/>
* Currently this supports following algorithm and providers combination:
* <ul>
* <li>md5 - cryptojs</li>
* <li>sha1 - cryptojs</li>
* <li>sha224 - cryptojs</li>
* <li>sha256 - cryptojs</li>
* <li>sha384 - cryptojs</li>
* <li>sha512 - cryptojs</li>
* <li>ripemd160 - cryptojs</li>
* <li>sha256 - sjcl (NEW from crypto.js 1.0.4)</li>
* </ul>
* @example
* // CryptoJS provider sample
* var md = new KJUR.crypto.MessageDigest({alg: "sha1", prov: "cryptojs"});
* md.updateString('aaa')
* var mdHex = md.digest()
*
* // SJCL(Stanford JavaScript Crypto Library) provider sample
* var md = new KJUR.crypto.MessageDigest({alg: "sha256", prov: "sjcl"}); // sjcl supports sha256 only
* md.updateString('aaa')
* var mdHex = md.digest()
*/
KJUR.crypto.MessageDigest = function(params) {
var md = null;
var algName = null;
var provName = null;
/**
* set hash algorithm and provider
* @name setAlgAndProvider
* @memberOf KJUR.crypto.MessageDigest
* @function
* @param {String} alg hash algorithm name
* @param {String} prov provider name
* @description
* @example
* // for SHA1
* md.setAlgAndProvider('sha1', 'cryptojs');
* // for RIPEMD160
* md.setAlgAndProvider('ripemd160', 'cryptojs');
*/
this.setAlgAndProvider = function(alg, prov) {
if (alg != null && prov === undefined) prov = KJUR.crypto.Util.DEFAULTPROVIDER[alg];
// for cryptojs
if (':md5:sha1:sha224:sha256:sha384:sha512:ripemd160:'.indexOf(alg) != -1 &&
prov == 'cryptojs') {
try {
this.md = eval(KJUR.crypto.Util.CRYPTOJSMESSAGEDIGESTNAME[alg]).create();
} catch (ex) {
throw "setAlgAndProvider hash alg set fail alg=" + alg + "/" + ex;
}
this.updateString = function(str) {
this.md.update(str);
};
this.updateHex = function(hex) {
var wHex = CryptoJS.enc.Hex.parse(hex);
this.md.update(wHex);
};
this.digest = function() {
var hash = this.md.finalize();
return hash.toString(CryptoJS.enc.Hex);
};
this.digestString = function(str) {
this.updateString(str);
return this.digest();
};
this.digestHex = function(hex) {
this.updateHex(hex);
return this.digest();
};
}
if (':sha256:'.indexOf(alg) != -1 &&
prov == 'sjcl') {
try {
this.md = new sjcl.hash.sha256();
} catch (ex) {
throw "setAlgAndProvider hash alg set fail alg=" + alg + "/" + ex;
}
this.updateString = function(str) {
this.md.update(str);
};
this.updateHex = function(hex) {
var baHex = sjcl.codec.hex.toBits(hex);
this.md.update(baHex);
};
this.digest = function() {
var hash = this.md.finalize();
return sjcl.codec.hex.fromBits(hash);
};
this.digestString = function(str) {
this.updateString(str);
return this.digest();
};
this.digestHex = function(hex) {
this.updateHex(hex);
return this.digest();
};
}
};
/**
* update digest by specified string
* @name updateString
* @memberOf KJUR.crypto.MessageDigest
* @function
* @param {String} str string to update
* @description
* @example
* md.updateString('New York');
*/
this.updateString = function(str) {
throw "updateString(str) not supported for this alg/prov: " + this.algName + "/" + this.provName;
};
/**
* update digest by specified hexadecimal string
* @name updateHex
* @memberOf KJUR.crypto.MessageDigest
* @function
* @param {String} hex hexadecimal string to update
* @description
* @example
* md.updateHex('0afe36');
*/
this.updateHex = function(hex) {
throw "updateHex(hex) not supported for this alg/prov: " + this.algName + "/" + this.provName;
};
/**
* completes hash calculation and returns hash result
* @name digest
* @memberOf KJUR.crypto.MessageDigest
* @function
* @description
* @example
* md.digest()
*/
this.digest = function() {
throw "digest() not supported for this alg/prov: " + this.algName + "/" + this.provName;
};
/**
* performs final update on the digest using string, then completes the digest computation
* @name digestString
* @memberOf KJUR.crypto.MessageDigest
* @function
* @param {String} str string to final update
* @description
* @example
* md.digestString('aaa')
*/
this.digestString = function(str) {
throw "digestString(str) not supported for this alg/prov: " + this.algName + "/" + this.provName;
};
/**
* performs final update on the digest using hexadecimal string, then completes the digest computation
* @name digestHex
* @memberOf KJUR.crypto.MessageDigest
* @function
* @param {String} hex hexadecimal string to final update
* @description
* @example
* md.digestHex('0f2abd')
*/
this.digestHex = function(hex) {
throw "digestHex(hex) not supported for this alg/prov: " + this.algName + "/" + this.provName;
};
if (params !== undefined) {
if (params['alg'] !== undefined) {
this.algName = params['alg'];
if (params['prov'] === undefined)
this.provName = KJUR.crypto.Util.DEFAULTPROVIDER[this.algName];
this.setAlgAndProvider(this.algName, this.provName);
}
}
};
/**
* Mac(Message Authentication Code) class which is very similar to java.security.Mac class
* @name KJUR.crypto.Mac
* @class Mac class which is very similar to java.security.Mac class
* @param {Array} params parameters for constructor
* @description
* <br/>
* Currently this supports following algorithm and providers combination:
* <ul>
* <li>hmacmd5 - cryptojs</li>
* <li>hmacsha1 - cryptojs</li>
* <li>hmacsha224 - cryptojs</li>
* <li>hmacsha256 - cryptojs</li>
* <li>hmacsha384 - cryptojs</li>
* <li>hmacsha512 - cryptojs</li>
* </ul>
* NOTE: HmacSHA224 and HmacSHA384 issue was fixed since jsrsasign 4.1.4.
* Please use 'ext/cryptojs-312-core-fix*.js' instead of 'core.js' of original CryptoJS
* to avoid those issue.
* <br/>
* NOTE2: Hmac signature bug was fixed in jsrsasign 4.9.0 by providing CryptoJS
* bug workaround.
* <br/>
* Please see {@link KJUR.crypto.Mac.setPassword}, how to provide password
* in various ways in detail.
* @example
* var mac = new KJUR.crypto.Mac({alg: "HmacSHA1", "pass": "pass"});
* mac.updateString('aaa')
* var macHex = md.doFinal()
*
* // other password representation
* var mac = new KJUR.crypto.Mac({alg: "HmacSHA256", "pass": {"hex": "6161"}});
* var mac = new KJUR.crypto.Mac({alg: "HmacSHA256", "pass": {"utf8": "aa"}});
* var mac = new KJUR.crypto.Mac({alg: "HmacSHA256", "pass": {"rstr": "\x61\x61"}});
* var mac = new KJUR.crypto.Mac({alg: "HmacSHA256", "pass": {"b64": "Mi02/+...a=="}});
* var mac = new KJUR.crypto.Mac({alg: "HmacSHA256", "pass": {"b64u": "Mi02_-...a"}});
*/
KJUR.crypto.Mac = function(params) {
var mac = null;
var pass = null;
var algName = null;
var provName = null;
var algProv = null;
this.setAlgAndProvider = function(alg, prov) {
alg = alg.toLowerCase();
if (alg == null) alg = "hmacsha1";
alg = alg.toLowerCase();
if (alg.substr(0, 4) != "hmac") {
throw "setAlgAndProvider unsupported HMAC alg: " + alg;
}
if (prov === undefined) prov = KJUR.crypto.Util.DEFAULTPROVIDER[alg];
this.algProv = alg + "/" + prov;
var hashAlg = alg.substr(4);
// for cryptojs
if (':md5:sha1:sha224:sha256:sha384:sha512:ripemd160:'.indexOf(hashAlg) != -1 &&
prov == 'cryptojs') {
try {
var mdObj = eval(KJUR.crypto.Util.CRYPTOJSMESSAGEDIGESTNAME[hashAlg]);
this.mac = CryptoJS.algo.HMAC.create(mdObj, this.pass);
} catch (ex) {
throw "setAlgAndProvider hash alg set fail hashAlg=" + hashAlg + "/" + ex;
}
this.updateString = function(str) {
this.mac.update(str);
};
this.updateHex = function(hex) {
var wHex = CryptoJS.enc.Hex.parse(hex);
this.mac.update(wHex);
};
this.doFinal = function() {
var hash = this.mac.finalize();
return hash.toString(CryptoJS.enc.Hex);
};
this.doFinalString = function(str) {
this.updateString(str);
return this.doFinal();
};
this.doFinalHex = function(hex) {
this.updateHex(hex);
return this.doFinal();
};
}
};
/**
* update digest by specified string
* @name updateString
* @memberOf KJUR.crypto.Mac
* @function
* @param {String} str string to update
* @description
* @example
* md.updateString('New York');
*/
this.updateString = function(str) {
throw "updateString(str) not supported for this alg/prov: " + this.algProv;
};
/**
* update digest by specified hexadecimal string
* @name updateHex
* @memberOf KJUR.crypto.Mac
* @function
* @param {String} hex hexadecimal string to update
* @description
* @example
* md.updateHex('0afe36');
*/
this.updateHex = function(hex) {
throw "updateHex(hex) not supported for this alg/prov: " + this.algProv;
};
/**
* completes hash calculation and returns hash result
* @name doFinal
* @memberOf KJUR.crypto.Mac
* @function
* @description
* @example
* md.digest()
*/
this.doFinal = function() {
throw "digest() not supported for this alg/prov: " + this.algProv;
};
/**
* performs final update on the digest using string, then completes the digest computation
* @name doFinalString
* @memberOf KJUR.crypto.Mac
* @function
* @param {String} str string to final update
* @description
* @example
* md.digestString('aaa')
*/
this.doFinalString = function(str) {
throw "digestString(str) not supported for this alg/prov: " + this.algProv;
};
/**
* performs final update on the digest using hexadecimal string,
* then completes the digest computation
* @name doFinalHex
* @memberOf KJUR.crypto.Mac
* @function
* @param {String} hex hexadecimal string to final update
* @description
* @example
* md.digestHex('0f2abd')
*/
this.doFinalHex = function(hex) {
throw "digestHex(hex) not supported for this alg/prov: " + this.algProv;
};
/**
* set password for Mac
* @name setPassword
* @memberOf KJUR.crypto.Mac
* @function
* @param {Object} pass password for Mac
* @since crypto 1.1.7 jsrsasign 4.9.0
* @description
* This method will set password for (H)Mac internally.
* Argument 'pass' can be specified as following:
* <ul>
* <li>even length string of 0..9, a..f or A-F: implicitly specified as hexadecimal string</li>
* <li>not above string: implicitly specified as raw string</li>
* <li>{rstr: "\x65\x70"}: explicitly specified as raw string</li>
* <li>{hex: "6570"}: explicitly specified as hexacedimal string</li>
* <li>{utf8: "秘密"}: explicitly specified as UTF8 string</li>
* <li>{b64: "Mi78..=="}: explicitly specified as Base64 string</li>
* <li>{b64u: "Mi7-_"}: explicitly specified as Base64URL string</li>
* </ul>
* It is *STRONGLY RECOMMENDED* that explicit representation of password argument
* to avoid ambiguity. For example string "6161" can mean a string "6161" or
* a hexadecimal string of "aa" (i.e. \x61\x61).
* @example
* mac = KJUR.crypto.Mac({'alg': 'hmacsha256'});
* // set password by implicit raw string
* mac.setPassword("\x65\x70\xb9\x0b");
* mac.setPassword("password");
* // set password by implicit hexadecimal string
* mac.setPassword("6570b90b");
* mac.setPassword("6570B90B");
* // set password by explicit raw string
* mac.setPassword({"rstr": "\x65\x70\xb9\x0b"});
* // set password by explicit hexadecimal string
* mac.setPassword({"hex": "6570b90b"});
* // set password by explicit utf8 string
* mac.setPassword({"utf8": "passwordパスワード");
* // set password by explicit Base64 string
* mac.setPassword({"b64": "Mb+c3f/=="});
* // set password by explicit Base64URL string
* mac.setPassword({"b64u": "Mb-c3f_"});
*/
this.setPassword = function(pass) {
// internal this.pass shall be CryptoJS DWord Object for CryptoJS bug
// work around. CrytoJS HMac password can be passed by
// raw string as described in the manual however it doesn't
// work properly in some case. If password was passed
// by CryptoJS DWord which is not described in the manual
// it seems to work. (fixed since crypto 1.1.7)
if (typeof pass == 'string') {
var hPass = pass;
if (pass.length % 2 == 1 || ! pass.match(/^[0-9A-Fa-f]+$/)) { // raw str
hPass = rstrtohex(pass);
}
this.pass = CryptoJS.enc.Hex.parse(hPass);
return;
}
if (typeof pass != 'object')
throw "KJUR.crypto.Mac unsupported password type: " + pass;
var hPass = null;
if (pass.hex !== undefined) {
if (pass.hex.length % 2 != 0 || ! pass.hex.match(/^[0-9A-Fa-f]+$/))
throw "Mac: wrong hex password: " + pass.hex;
hPass = pass.hex;
}
if (pass.utf8 !== undefined) hPass = utf8tohex(pass.utf8);
if (pass.rstr !== undefined) hPass = rstrtohex(pass.rstr);
if (pass.b64 !== undefined) hPass = b64tohex(pass.b64);
if (pass.b64u !== undefined) hPass = b64utohex(pass.b64u);
if (hPass == null)
throw "KJUR.crypto.Mac unsupported password type: " + pass;
this.pass = CryptoJS.enc.Hex.parse(hPass);
};
if (params !== undefined) {
if (params.pass !== undefined) {
this.setPassword(params.pass);
}
if (params.alg !== undefined) {
this.algName = params.alg;
if (params['prov'] === undefined)
this.provName = KJUR.crypto.Util.DEFAULTPROVIDER[this.algName];
this.setAlgAndProvider(this.algName, this.provName);
}
}
};
/**
* Signature class which is very similar to java.security.Signature class
* @name KJUR.crypto.Signature
* @class Signature class which is very similar to java.security.Signature class
* @param {Array} params parameters for constructor
* @property {String} state Current state of this signature object whether 'SIGN', 'VERIFY' or null
* @description
* <br/>
* As for params of constructor's argument, it can be specify following attributes:
* <ul>
* <li>alg - signature algorithm name (ex. {MD5,SHA1,SHA224,SHA256,SHA384,SHA512,RIPEMD160}with{RSA,ECDSA,DSA})</li>
* <li>provider - currently 'cryptojs/jsrsa' only</li>
* </ul>
* <h4>SUPPORTED ALGORITHMS AND PROVIDERS</h4>
* This Signature class supports following signature algorithm and provider names:
* <ul>
* <li>MD5withRSA - cryptojs/jsrsa</li>
* <li>SHA1withRSA - cryptojs/jsrsa</li>
* <li>SHA224withRSA - cryptojs/jsrsa</li>
* <li>SHA256withRSA - cryptojs/jsrsa</li>
* <li>SHA384withRSA - cryptojs/jsrsa</li>
* <li>SHA512withRSA - cryptojs/jsrsa</li>
* <li>RIPEMD160withRSA - cryptojs/jsrsa</li>
* <li>MD5withECDSA - cryptojs/jsrsa</li>
* <li>SHA1withECDSA - cryptojs/jsrsa</li>
* <li>SHA224withECDSA - cryptojs/jsrsa</li>
* <li>SHA256withECDSA - cryptojs/jsrsa</li>
* <li>SHA384withECDSA - cryptojs/jsrsa</li>
* <li>SHA512withECDSA - cryptojs/jsrsa</li>
* <li>RIPEMD160withECDSA - cryptojs/jsrsa</li>
* <li>MD5withRSAandMGF1 - cryptojs/jsrsa</li>
* <li>SHA1withRSAandMGF1 - cryptojs/jsrsa</li>
* <li>SHA224withRSAandMGF1 - cryptojs/jsrsa</li>
* <li>SHA256withRSAandMGF1 - cryptojs/jsrsa</li>
* <li>SHA384withRSAandMGF1 - cryptojs/jsrsa</li>
* <li>SHA512withRSAandMGF1 - cryptojs/jsrsa</li>
* <li>RIPEMD160withRSAandMGF1 - cryptojs/jsrsa</li>
* <li>SHA1withDSA - cryptojs/jsrsa</li>
* <li>SHA224withDSA - cryptojs/jsrsa</li>
* <li>SHA256withDSA - cryptojs/jsrsa</li>
* </ul>
* Here are supported elliptic cryptographic curve names and their aliases for ECDSA:
* <ul>
* <li>secp256k1</li>
* <li>secp256r1, NIST P-256, P-256, prime256v1</li>
* <li>secp384r1, NIST P-384, P-384</li>
* </ul>
* NOTE1: DSA signing algorithm is also supported since crypto 1.1.5.
* <h4>EXAMPLES</h4>
* @example
* // RSA signature generation
* var sig = new KJUR.crypto.Signature({"alg": "SHA1withRSA"});
* sig.init(prvKeyPEM);
* sig.updateString('aaa');
* var hSigVal = sig.sign();
*
* // DSA signature validation
* var sig2 = new KJUR.crypto.Signature({"alg": "SHA1withDSA"});
* sig2.init(certPEM);
* sig.updateString('aaa');
* var isValid = sig2.verify(hSigVal);
*
* // ECDSA signing
* var sig = new KJUR.crypto.Signature({'alg':'SHA1withECDSA'});
* sig.init(prvKeyPEM);
* sig.updateString('aaa');
* var sigValueHex = sig.sign();
*
* // ECDSA verifying
* var sig2 = new KJUR.crypto.Signature({'alg':'SHA1withECDSA'});
* sig.init(certPEM);
* sig.updateString('aaa');
* var isValid = sig.verify(sigValueHex);
*/
KJUR.crypto.Signature = function(params) {
var prvKey = null; // RSAKey/KJUR.crypto.{ECDSA,DSA} object for signing
var pubKey = null; // RSAKey/KJUR.crypto.{ECDSA,DSA} object for verifying
var md = null; // KJUR.crypto.MessageDigest object
var sig = null;
var algName = null;
var provName = null;
var algProvName = null;
var mdAlgName = null;
var pubkeyAlgName = null; // rsa,ecdsa,rsaandmgf1(=rsapss)
var state = null;
var pssSaltLen = -1;
var initParams = null;
var sHashHex = null; // hex hash value for hex
var hDigestInfo = null;
var hPaddedDigestInfo = null;
var hSign = null;
this._setAlgNames = function() {
if (this.algName.match(/^(.+)with(.+)$/)) {
this.mdAlgName = RegExp.$1.toLowerCase();
this.pubkeyAlgName = RegExp.$2.toLowerCase();
}
};
this._zeroPaddingOfSignature = function(hex, bitLength) {
var s = "";
var nZero = bitLength / 4 - hex.length;
for (var i = 0; i < nZero; i++) {
s = s + "0";
}
return s + hex;
};
/**
* set signature algorithm and provider
* @name setAlgAndProvider
* @memberOf KJUR.crypto.Signature
* @function
* @param {String} alg signature algorithm name
* @param {String} prov provider name
* @description
* @example
* md.setAlgAndProvider('SHA1withRSA', 'cryptojs/jsrsa');
*/
this.setAlgAndProvider = function(alg, prov) {
this._setAlgNames();
if (prov != 'cryptojs/jsrsa')
throw "provider not supported: " + prov;
if (':md5:sha1:sha224:sha256:sha384:sha512:ripemd160:'.indexOf(this.mdAlgName) != -1) {
try {
this.md = new KJUR.crypto.MessageDigest({'alg':this.mdAlgName});
} catch (ex) {
throw "setAlgAndProvider hash alg set fail alg=" +
this.mdAlgName + "/" + ex;
}
this.init = function(keyparam, pass) {
var keyObj = null;
try {
if (pass === undefined) {
keyObj = KEYUTIL.getKey(keyparam);
} else {
keyObj = KEYUTIL.getKey(keyparam, pass);
}
} catch (ex) {
throw "init failed:" + ex;
}
if (keyObj.isPrivate === true) {
this.prvKey = keyObj;
this.state = "SIGN";
} else if (keyObj.isPublic === true) {
this.pubKey = keyObj;
this.state = "VERIFY";
} else {
throw "init failed.:" + keyObj;
}
};
this.initSign = function(params) {
if (typeof params['ecprvhex'] == 'string' &&
typeof params['eccurvename'] == 'string') {
this.ecprvhex = params['ecprvhex'];
this.eccurvename = params['eccurvename'];
} else {
this.prvKey = params;
}
this.state = "SIGN";
};
this.initVerifyByPublicKey = function(params) {
if (typeof params['ecpubhex'] == 'string' &&
typeof params['eccurvename'] == 'string') {
this.ecpubhex = params['ecpubhex'];
this.eccurvename = params['eccurvename'];
} else if (params instanceof KJUR.crypto.ECDSA) {
this.pubKey = params;
} else if (params instanceof RSAKey) {
this.pubKey = params;
}
this.state = "VERIFY";
};
this.initVerifyByCertificatePEM = function(certPEM) {
var x509 = new X509();
x509.readCertPEM(certPEM);
this.pubKey = x509.subjectPublicKeyRSA;
this.state = "VERIFY";
};
this.updateString = function(str) {
this.md.updateString(str);
};
this.updateHex = function(hex) {
this.md.updateHex(hex);
};
this.sign = function() {
this.sHashHex = this.md.digest();
if (typeof this.ecprvhex != "undefined" &&
typeof this.eccurvename != "undefined") {
var ec = new KJUR.crypto.ECDSA({'curve': this.eccurvename});
this.hSign = ec.signHex(this.sHashHex, this.ecprvhex);
} else if (this.prvKey instanceof RSAKey &&
this.pubkeyAlgName == "rsaandmgf1") {
this.hSign = this.prvKey.signWithMessageHashPSS(this.sHashHex,
this.mdAlgName,
this.pssSaltLen);
} else if (this.prvKey instanceof RSAKey &&
this.pubkeyAlgName == "rsa") {
this.hSign = this.prvKey.signWithMessageHash(this.sHashHex,
this.mdAlgName);
} else if (this.prvKey instanceof KJUR.crypto.ECDSA) {
this.hSign = this.prvKey.signWithMessageHash(this.sHashHex);
} else if (this.prvKey instanceof KJUR.crypto.DSA) {
this.hSign = this.prvKey.signWithMessageHash(this.sHashHex);
} else {
throw "Signature: unsupported public key alg: " + this.pubkeyAlgName;
}
return this.hSign;
};
this.signString = function(str) {
this.updateString(str);
return this.sign();
};
this.signHex = function(hex) {
this.updateHex(hex);
return this.sign();
};
this.verify = function(hSigVal) {
this.sHashHex = this.md.digest();
if (typeof this.ecpubhex != "undefined" &&
typeof this.eccurvename != "undefined") {
var ec = new KJUR.crypto.ECDSA({curve: this.eccurvename});
return ec.verifyHex(this.sHashHex, hSigVal, this.ecpubhex);
} else if (this.pubKey instanceof RSAKey &&
this.pubkeyAlgName == "rsaandmgf1") {
return this.pubKey.verifyWithMessageHashPSS(this.sHashHex, hSigVal,
this.mdAlgName,
this.pssSaltLen);
} else if (this.pubKey instanceof RSAKey &&
this.pubkeyAlgName == "rsa") {
return this.pubKey.verifyWithMessageHash(this.sHashHex, hSigVal);
} else if (this.pubKey instanceof KJUR.crypto.ECDSA) {
return this.pubKey.verifyWithMessageHash(this.sHashHex, hSigVal);
} else if (this.pubKey instanceof KJUR.crypto.DSA) {
return this.pubKey.verifyWithMessageHash(this.sHashHex, hSigVal);
} else {
throw "Signature: unsupported public key alg: " + this.pubkeyAlgName;
}
};
}
};
/**
* Initialize this object for signing or verifying depends on key
* @name init
* @memberOf KJUR.crypto.Signature
* @function
* @param {Object} key specifying public or private key as plain/encrypted PKCS#5/8 PEM file, certificate PEM or {@link RSAKey}, {@link KJUR.crypto.DSA} or {@link KJUR.crypto.ECDSA} object
* @param {String} pass (OPTION) passcode for encrypted private key
* @since crypto 1.1.3
* @description
* This method is very useful initialize method for Signature class since
* you just specify key then this method will automatically initialize it
* using {@link KEYUTIL.getKey} method.
* As for 'key', following argument type are supported:
* <h5>signing</h5>
* <ul>
* <li>PEM formatted PKCS#8 encrypted RSA/ECDSA private key concluding "BEGIN ENCRYPTED PRIVATE KEY"</li>
* <li>PEM formatted PKCS#5 encrypted RSA/DSA private key concluding "BEGIN RSA/DSA PRIVATE KEY" and ",ENCRYPTED"</li>
* <li>PEM formatted PKCS#8 plain RSA/ECDSA private key concluding "BEGIN PRIVATE KEY"</li>
* <li>PEM formatted PKCS#5 plain RSA/DSA private key concluding "BEGIN RSA/DSA PRIVATE KEY" without ",ENCRYPTED"</li>
* <li>RSAKey object of private key</li>
* <li>KJUR.crypto.ECDSA object of private key</li>
* <li>KJUR.crypto.DSA object of private key</li>