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x509-1.1.js
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/*! x509-1.1.9.js (c) 2012-2016 Kenji Urushima | kjur.github.com/jsrsasign/license
*/
/*
* x509.js - X509 class to read subject public key from certificate.
*
* Copyright (c) 2010-2016 Kenji Urushima ([email protected])
*
* 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 x509-1.1.js
* @author Kenji Urushima [email protected]
* @version x509 1.1.9 (2016-May-10)
* @since jsrsasign 1.x.x
* @license <a href="http://kjur.github.io/jsrsasign/license/">MIT License</a>
*/
/*
* Depends:
* base64.js
* rsa.js
* asn1hex.js
*/
/**
* hexadecimal X.509 certificate ASN.1 parser class.<br/>
* @class hexadecimal X.509 certificate ASN.1 parser class
* @property {RSAKey} subjectPublicKeyRSA Tom Wu's RSAKey object
* @property {String} subjectPublicKeyRSA_hN hexadecimal string for modulus of RSA public key
* @property {String} subjectPublicKeyRSA_hE hexadecimal string for public exponent of RSA public key
* @property {String} hex hexacedimal string for X.509 certificate.
* @author Kenji Urushima
* @version 1.0.1 (08 May 2012)
* @see <a href="http://kjur.github.com/jsrsasigns/">'jsrsasign'(RSA Sign JavaScript Library) home page http://kjur.github.com/jsrsasign/</a>
* @description
* X509 class provides following functionality:
* <ul>
* <li>parse X.509 certificate ASN.1 structure</li>
* <li>get basic fields, extensions, signature algorithms and signature values</li>
* <li>read PEM certificate</li>
* </ul>
*
* <ul>
* <li><b>TO GET FIELDS</b>
* <ul>
* <li>serial - {@link X509#getSerialNumberHex}</li>
* <li>issuer - {@link X509#getIssuerHex}</li>
* <li>issuer - {@link X509#getIssuerString}</li>
* <li>notBefore - {@link X509#getNotBefore}</li>
* <li>notAfter - {@link X509#getNotAfter}</li>
* <li>subject - {@link X509#getSubjectHex}</li>
* <li>subject - {@link X509#getSubjectString}</li>
* <li>subjectPublicKeyInfo - {@link X509.getSubjectPublicKeyPosFromCertHex}</li>
* <li>subjectPublicKeyInfo - {@link X509.getSubjectPublicKeyInfoPosFromCertHex}</li>
* <li>subjectPublicKeyInfo - {@link X509.getPublicKeyFromCertPEM}</li>
* <li>signature algorithm - {@link X509.getSignatureAlgorithmName}</li>
* <li>signature value - {@link X509.getSignatureValueHex}</li>
* </ul>
* </li>
* <li><b>TO GET EXTENSIONS</b>
* <ul>
* <li>basicConstraints - {@link X509.getExtBasicConstraints}</li>
* <li>keyUsage - {@link X509.getExtKeyUsageBin}</li>
* <li>keyUsage - {@link X509.getExtKeyUsageString}</li>
* <li>subjectKeyIdentifier - {@link X509.getExtSubjectKeyIdentifier}</li>
* <li>authorityKeyIdentifier - {@link X509.getExtAuthorityKeyIdentifier}</li>
* <li>extKeyUsage - {@link X509.getExtExtKeyUsageName}</li>
* <li>subjectAltName - {@link X509.getExtSubjectAltName}</li>
* <li>cRLDistributionPoints - {@link X509.getExtCRLDistributionPointsURI}</li>
* <li>authorityInfoAccess - {@link X509.getExtAIAInfo}</li>
* </ul>
* </li>
* <li><b>UTILITIES</b>
* <ul>
* <li>reading PEM certificate - {@link X509#readCertPEM}</li>
* <li>get all certificate information - {@link X509#getInfo}</li>
* <li>get Base64 from PEM certificate - {@link X509.pemToBase64}</li>
* <li>get hexadecimal string from PEM certificate - {@link X509.pemToHex}</li>
* </ul>
* </li>
* </ul>
*/
function X509() {
this.subjectPublicKeyRSA = null;
this.subjectPublicKeyRSA_hN = null;
this.subjectPublicKeyRSA_hE = null;
this.hex = null;
// ===== get basic fields from hex =====================================
/**
* get hexadecimal string of serialNumber field of certificate.<br/>
* @name getSerialNumberHex
* @memberOf X509#
* @function
* @return {String} hexadecimal string of certificate serial number
* @example
* var x = new X509();
* x.readCertPEM(sCertPEM);
* var sn = x.getSerialNumberHex(); // return string like "01ad..."
*/
this.getSerialNumberHex = function() {
return ASN1HEX.getDecendantHexVByNthList(this.hex, 0, [0, 1]);
};
/**
* get signature algorithm name in basic field
* @name getSignatureAlgorithmField
* @memberOf X509#
* @function
* @return {String} signature algorithm name (ex. SHA1withRSA, SHA256withECDSA)
* @since x509 1.1.8
* @description
* This method will get a name of signature algorithm field of certificate:
* @example
* var x = new X509();
* x.readCertPEM(sCertPEM);
* algName = x.getSignatureAlgorithmField();
*/
this.getSignatureAlgorithmField = function() {
var sigAlgOidHex = ASN1HEX.getDecendantHexVByNthList(this.hex, 0, [0, 2, 0]);
var sigAlgOidInt = KJUR.asn1.ASN1Util.oidHexToInt(sigAlgOidHex);
var sigAlgName = KJUR.asn1.x509.OID.oid2name(sigAlgOidInt);
return sigAlgName;
};
/**
* get hexadecimal string of issuer field TLV of certificate.<br/>
* @name getIssuerHex
* @memberOf X509#
* @function
* @return {String} hexadecial string of issuer DN ASN.1
* @example
* var x = new X509();
* x.readCertPEM(sCertPEM);
* var issuer = x.getIssuerHex(); // return string like "3013..."
*/
this.getIssuerHex = function() {
return ASN1HEX.getDecendantHexTLVByNthList(this.hex, 0, [0, 3]);
};
/**
* get string of issuer field of certificate.<br/>
* @name getIssuerString
* @memberOf X509#
* @function
* @return {String} issuer DN string
* @example
* var x = new X509();
* x.readCertPEM(sCertPEM);
* var issuer = x.getIssuerString(); // return string like "/C=US/O=TEST"
*/
this.getIssuerString = function() {
return X509.hex2dn(ASN1HEX.getDecendantHexTLVByNthList(this.hex, 0, [0, 3]));
};
/**
* get hexadecimal string of subject field of certificate.<br/>
* @name getSubjectHex
* @memberOf X509#
* @function
* @return {String} hexadecial string of subject DN ASN.1
* @example
* var x = new X509();
* x.readCertPEM(sCertPEM);
* var subject = x.getSubjectHex(); // return string like "3013..."
*/
this.getSubjectHex = function() {
return ASN1HEX.getDecendantHexTLVByNthList(this.hex, 0, [0, 5]);
};
/**
* get string of subject field of certificate.<br/>
* @name getSubjectString
* @memberOf X509#
* @function
* @return {String} subject DN string
* @example
* var x = new X509();
* x.readCertPEM(sCertPEM);
* var subject = x.getSubjectString(); // return string like "/C=US/O=TEST"
*/
this.getSubjectString = function() {
return X509.hex2dn(ASN1HEX.getDecendantHexTLVByNthList(this.hex, 0, [0, 5]));
};
/**
* get notBefore field string of certificate.<br/>
* @name getNotBefore
* @memberOf X509#
* @function
* @return {String} not before time value (ex. "151231235959Z")
* @example
* var x = new X509();
* x.readCertPEM(sCertPEM);
* var notBefore = x.getNotBefore(); // return string like "151231235959Z"
*/
this.getNotBefore = function() {
var s = ASN1HEX.getDecendantHexVByNthList(this.hex, 0, [0, 4, 0]);
s = s.replace(/(..)/g, "%$1");
s = decodeURIComponent(s);
return s;
};
/**
* get notAfter field string of certificate.<br/>
* @name getNotAfter
* @memberOf X509#
* @function
* @return {String} not after time value (ex. "151231235959Z")
* @example
* var x = new X509();
* x.readCertPEM(sCertPEM);
* var notAfter = x.getNotAfter(); // return string like "151231235959Z"
*/
this.getNotAfter = function() {
var s = ASN1HEX.getDecendantHexVByNthList(this.hex, 0, [0, 4, 1]);
s = s.replace(/(..)/g, "%$1");
s = decodeURIComponent(s);
return s;
};
// ===== read certificate public key ==========================
// ===== read certificate =====================================
/**
* read PEM formatted X.509 certificate from string.<br/>
* @name readCertPEM
* @memberOf X509#
* @function
* @param {String} sCertPEM string for PEM formatted X.509 certificate
* @example
* x = new X509();
* x.readCertPEM(sCertPEM); // read certificate
*/
this.readCertPEM = function(sCertPEM) {
var hCert = X509.pemToHex(sCertPEM);
var a = X509.getPublicKeyHexArrayFromCertHex(hCert);
var rsa = new RSAKey();
rsa.setPublic(a[0], a[1]);
this.subjectPublicKeyRSA = rsa;
this.subjectPublicKeyRSA_hN = a[0];
this.subjectPublicKeyRSA_hE = a[1];
this.hex = hCert;
};
this.readCertPEMWithoutRSAInit = function(sCertPEM) {
var hCert = X509.pemToHex(sCertPEM);
var a = X509.getPublicKeyHexArrayFromCertHex(hCert);
if (typeof this.subjectPublicKeyRSA.setPublic === "function") {
this.subjectPublicKeyRSA.setPublic(a[0], a[1]);
}
this.subjectPublicKeyRSA_hN = a[0];
this.subjectPublicKeyRSA_hE = a[1];
this.hex = hCert;
};
/**
* get certificate information as string.<br/>
* @name getInfo
* @memberOf X509#
* @function
* @return {String} certificate information string
* @since jsrsasign 5.0.10 x509 1.1.8
* @example
* x = new X509();
* x.readCertPEM(certPEM);
* console.log(x.getInfo());
* // this shows as following
* Basic Fields
* serial number: 02ac5c266a0b409b8f0b79f2ae462577
* signature algorithm: SHA1withRSA
* issuer: /C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert High Assurance EV Root CA
* notBefore: 061110000000Z
* notAfter: 311110000000Z
* subject: /C=US/O=DigiCert Inc/OU=www.digicert.com/CN=DigiCert High Assurance EV Root CA
* subject public key info:
* key algorithm: RSA
* n=c6cce573e6fbd4bb...
* e=10001
* X509v3 Extensions:
* keyUsage CRITICAL:
* digitalSignature,keyCertSign,cRLSign
* basicConstraints CRITICAL:
* cA=true
* subjectKeyIdentifier :
* b13ec36903f8bf4701d498261a0802ef63642bc3
* authorityKeyIdentifier :
* kid=b13ec36903f8bf4701d498261a0802ef63642bc3
* signature algorithm: SHA1withRSA
* signature: 1c1a0697dcd79c9f...
*/
this.getInfo = function() {
var s = "Basic Fields\n";
s += " serial number: " + this.getSerialNumberHex() + "\n";
s += " signature algorithm: " + this.getSignatureAlgorithmField() + "\n";
s += " issuer: " + this.getIssuerString() + "\n";
s += " notBefore: " + this.getNotBefore() + "\n";
s += " notAfter: " + this.getNotAfter() + "\n";
s += " subject: " + this.getSubjectString() + "\n";
s += " subject public key info: " + "\n";
// subject public key info
var pSPKI = X509.getSubjectPublicKeyInfoPosFromCertHex(this.hex);
var hSPKI = ASN1HEX.getHexOfTLV_AtObj(this.hex, pSPKI);
var keyObj = KEYUTIL.getKey(hSPKI, null, "pkcs8pub");
//s += " " + JSON.stringify(keyObj) + "\n";
if (keyObj instanceof RSAKey) {
s += " key algorithm: RSA\n";
s += " n=" + keyObj.n.toString(16).substr(0, 16) + "...\n";
s += " e=" + keyObj.e.toString(16) + "\n";
}
s += "X509v3 Extensions:\n";
var aExt = X509.getV3ExtInfoListOfCertHex(this.hex);
for (var i = 0; i < aExt.length; i++) {
var info = aExt[i];
// show extension name and critical flag
var extName = KJUR.asn1.x509.OID.oid2name(info["oid"]);
if (extName === '') extName = info["oid"];
var critical = '';
if (info["critical"] === true) critical = "CRITICAL";
s += " " + extName + " " + critical + ":\n";
// show extension value if supported
if (extName === "basicConstraints") {
var bc = X509.getExtBasicConstraints(this.hex);
if (bc.cA === undefined) {
s += " {}\n";
} else {
s += " cA=true";
if (bc.pathLen !== undefined)
s += ", pathLen=" + bc.pathLen;
s += "\n";
}
} else if (extName === "keyUsage") {
s += " " + X509.getExtKeyUsageString(this.hex) + "\n";
} else if (extName === "subjectKeyIdentifier") {
s += " " + X509.getExtSubjectKeyIdentifier(this.hex) + "\n";
} else if (extName === "authorityKeyIdentifier") {
var akid = X509.getExtAuthorityKeyIdentifier(this.hex);
if (akid.kid !== undefined)
s += " kid=" + akid.kid + "\n";
} else if (extName === "extKeyUsage") {
var eku = X509.getExtExtKeyUsageName(this.hex);
s += " " + eku.join(", ") + "\n";
} else if (extName === "subjectAltName") {
var san = X509.getExtSubjectAltName(this.hex);
s += " " + san.join(", ") + "\n";
} else if (extName === "cRLDistributionPoints") {
var cdp = X509.getExtCRLDistributionPointsURI(this.hex);
s += " " + cdp + "\n";
} else if (extName === "authorityInfoAccess") {
var aia = X509.getExtAIAInfo(this.hex);
if (aia.ocsp !== undefined)
s += " ocsp: " + aia.ocsp.join(",") + "\n";
if (aia.caissuer !== undefined)
s += " caissuer: " + aia.caissuer.join(",") + "\n";
}
}
s += "signature algorithm: " + X509.getSignatureAlgorithmName(this.hex) + "\n";
s += "signature: " + X509.getSignatureValueHex(this.hex).substr(0, 16) + "...\n";
return s;
};
};
/**
* get Base64 string from PEM certificate string
* @name pemToBase64
* @memberOf X509
* @function
* @param {String} sCertPEM PEM formatted RSA/ECDSA/DSA X.509 certificate
* @return {String} Base64 string of PEM certificate
* @example
* b64 = X509.pemToBase64(certPEM);
*/
X509.pemToBase64 = function(sCertPEM) {
var s = sCertPEM;
s = s.replace("-----BEGIN CERTIFICATE-----", "");
s = s.replace("-----END CERTIFICATE-----", "");
s = s.replace(/[ \n]+/g, "");
return s;
};
/**
* get a hexa decimal string from PEM certificate string
* @name pemToHex
* @memberOf X509
* @function
* @param {String} sCertPEM PEM formatted RSA/ECDSA/DSA X.509 certificate
* @return {String} hexadecimal string of PEM certificate
* @example
* hex = X509.pemToHex(certPEM);
*/
X509.pemToHex = function(sCertPEM) {
var b64Cert = X509.pemToBase64(sCertPEM);
var hCert = b64tohex(b64Cert);
return hCert;
};
/**
* get a string index of contents of subjectPublicKeyInfo BITSTRING value from hexadecimal certificate<br/>
* @name getSubjectPublicKeyPosFromCertHex
* @memberOf X509
* @function
* @param {String} hexadecimal string of DER RSA/ECDSA/DSA X.509 certificate
* @return {Integer} string index of key contents
* @example
* idx = X509.getSubjectPublicKeyPosFromCertHex("3082...");
*/
// NOTE: Without BITSTRING encapsulation.
X509.getSubjectPublicKeyPosFromCertHex = function(hCert) {
var pInfo = X509.getSubjectPublicKeyInfoPosFromCertHex(hCert);
if (pInfo == -1) return -1;
var a = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, pInfo);
if (a.length != 2) return -1;
var pBitString = a[1];
if (hCert.substring(pBitString, pBitString + 2) != '03') return -1;
var pBitStringV = ASN1HEX.getStartPosOfV_AtObj(hCert, pBitString);
if (hCert.substring(pBitStringV, pBitStringV + 2) != '00') return -1;
return pBitStringV + 2;
};
/**
* get a string index of subjectPublicKeyInfo field from hexadecimal certificate<br/>
* @name getSubjectPublicKeyInfoPosFromCertHex
* @memberOf X509
* @function
* @param {String} hexadecimal string of DER RSA/ECDSA/DSA X.509 certificate
* @return {Integer} string index of subjectPublicKeyInfo field
* @description
* This static method gets a string index of subjectPublicKeyInfo field from hexadecimal certificate.<br/>
* NOTE1: privateKeyUsagePeriod field of X509v2 not supported.<br/>
* NOTE2: X.509v1 and X.509v3 certificate are supported.<br/>
* @example
* idx = X509.getSubjectPublicKeyInfoPosFromCertHex("3082...");
*/
X509.getSubjectPublicKeyInfoPosFromCertHex = function(hCert) {
var pTbsCert = ASN1HEX.getStartPosOfV_AtObj(hCert, 0);
var a = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, pTbsCert);
if (a.length < 1) return -1;
if (hCert.substring(a[0], a[0] + 10) == "a003020102") { // v3
if (a.length < 6) return -1;
return a[6];
} else {
if (a.length < 5) return -1;
return a[5];
}
};
X509.getPublicKeyHexArrayFromCertHex = function(hCert) {
var p = X509.getSubjectPublicKeyPosFromCertHex(hCert);
var a = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, p);
if (a.length != 2) return [];
var hN = ASN1HEX.getHexOfV_AtObj(hCert, a[0]);
var hE = ASN1HEX.getHexOfV_AtObj(hCert, a[1]);
if (hN != null && hE != null) {
return [hN, hE];
} else {
return [];
}
};
X509.getHexTbsCertificateFromCert = function(hCert) {
var pTbsCert = ASN1HEX.getStartPosOfV_AtObj(hCert, 0);
return pTbsCert;
};
X509.getPublicKeyHexArrayFromCertPEM = function(sCertPEM) {
var hCert = X509.pemToHex(sCertPEM);
var a = X509.getPublicKeyHexArrayFromCertHex(hCert);
return a;
};
X509.hex2dn = function(hDN) {
var s = "";
var a = ASN1HEX.getPosArrayOfChildren_AtObj(hDN, 0);
for (var i = 0; i < a.length; i++) {
var hRDN = ASN1HEX.getHexOfTLV_AtObj(hDN, a[i]);
s = s + "/" + X509.hex2rdn(hRDN);
}
return s;
};
X509.hex2rdn = function(hRDN) {
var hType = ASN1HEX.getDecendantHexTLVByNthList(hRDN, 0, [0, 0]);
var hValue = ASN1HEX.getDecendantHexVByNthList(hRDN, 0, [0, 1]);
var type = "";
try { type = X509.DN_ATTRHEX[hType]; } catch (ex) { type = hType; }
hValue = hValue.replace(/(..)/g, "%$1");
var value = decodeURIComponent(hValue);
return type + "=" + value;
};
X509.DN_ATTRHEX = {
"0603550406": "C",
"060355040a": "O",
"060355040b": "OU",
"0603550403": "CN",
"0603550405": "SN",
"0603550408": "ST",
"0603550407": "L",
"0603550409": "streetAddress",
"060355040f": "businessCategory",
"0603550411": "postalCode",
"060b2b0601040182373c020102": "jurisdictionOfIncorporationSP",
"060b2b0601040182373c020103": "jurisdictionOfIncorporationC",
};
/**
* get RSAKey/ECDSA public key object from PEM certificate string
* @name getPublicKeyFromCertPEM
* @memberOf X509
* @function
* @param {String} sCertPEM PEM formatted RSA/ECDSA/DSA X.509 certificate
* @return returns RSAKey/KJUR.crypto.{ECDSA,DSA} object of public key
* @since x509 1.1.1
* @description
* NOTE: DSA is also supported since x509 1.1.2.
*/
X509.getPublicKeyFromCertPEM = function(sCertPEM) {
var info = X509.getPublicKeyInfoPropOfCertPEM(sCertPEM);
if (info.algoid == "2a864886f70d010101") { // RSA
var aRSA = KEYUTIL.parsePublicRawRSAKeyHex(info.keyhex);
var key = new RSAKey();
key.setPublic(aRSA.n, aRSA.e);
return key;
} else if (info.algoid == "2a8648ce3d0201") { // ECC
var curveName = KJUR.crypto.OID.oidhex2name[info.algparam];
var key = new KJUR.crypto.ECDSA({'curve': curveName, 'info': info.keyhex});
key.setPublicKeyHex(info.keyhex);
return key;
} else if (info.algoid == "2a8648ce380401") { // DSA 1.2.840.10040.4.1
var p = ASN1HEX.getVbyList(info.algparam, 0, [0], "02");
var q = ASN1HEX.getVbyList(info.algparam, 0, [1], "02");
var g = ASN1HEX.getVbyList(info.algparam, 0, [2], "02");
var y = ASN1HEX.getHexOfV_AtObj(info.keyhex, 0);
y = y.substr(2);
var key = new KJUR.crypto.DSA();
key.setPublic(new BigInteger(p, 16),
new BigInteger(q, 16),
new BigInteger(g, 16),
new BigInteger(y, 16));
return key;
} else {
throw "unsupported key";
}
};
/**
* get public key information from PEM certificate
* @name getPublicKeyInfoPropOfCertPEM
* @memberOf X509
* @function
* @param {String} sCertPEM string of PEM formatted certificate
* @return {Hash} hash of information for public key
* @since x509 1.1.1
* @description
* Resulted associative array has following properties:<br/>
* <ul>
* <li>algoid - hexadecimal string of OID of asymmetric key algorithm</li>
* <li>algparam - hexadecimal string of OID of ECC curve name or null</li>
* <li>keyhex - hexadecimal string of key in the certificate</li>
* </ul>
* NOTE: X509v1 certificate is also supported since x509.js 1.1.9.
*/
X509.getPublicKeyInfoPropOfCertPEM = function(sCertPEM) {
var result = {};
result.algparam = null;
var hCert = X509.pemToHex(sCertPEM);
// 1. Certificate ASN.1
var a1 = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, 0);
if (a1.length != 3)
throw "malformed X.509 certificate PEM (code:001)"; // not 3 item of seq Cert
// 2. tbsCertificate
if (hCert.substr(a1[0], 2) != "30")
throw "malformed X.509 certificate PEM (code:002)"; // tbsCert not seq
var a2 = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, a1[0]);
// 3. subjectPublicKeyInfo
var idx_spi = 6; // subjectPublicKeyInfo index in tbsCert for v3 cert
if (hCert.substr(a2[0], 2) !== "a0") idx_spi = 5;
if (a2.length < idx_spi + 1)
throw "malformed X.509 certificate PEM (code:003)"; // no subjPubKeyInfo
var a3 = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, a2[idx_spi]);
if (a3.length != 2)
throw "malformed X.509 certificate PEM (code:004)"; // not AlgId and PubKey
// 4. AlgId
var a4 = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, a3[0]);
if (a4.length != 2)
throw "malformed X.509 certificate PEM (code:005)"; // not 2 item in AlgId
result.algoid = ASN1HEX.getHexOfV_AtObj(hCert, a4[0]);
if (hCert.substr(a4[1], 2) == "06") { // EC
result.algparam = ASN1HEX.getHexOfV_AtObj(hCert, a4[1]);
} else if (hCert.substr(a4[1], 2) == "30") { // DSA
result.algparam = ASN1HEX.getHexOfTLV_AtObj(hCert, a4[1]);
}
// 5. Public Key Hex
if (hCert.substr(a3[1], 2) != "03")
throw "malformed X.509 certificate PEM (code:006)"; // not bitstring
var unusedBitAndKeyHex = ASN1HEX.getHexOfV_AtObj(hCert, a3[1]);
result.keyhex = unusedBitAndKeyHex.substr(2);
return result;
};
/**
* get position of subjectPublicKeyInfo field from HEX certificate
* @name getPublicKeyInfoPosOfCertHEX
* @memberOf X509
* @function
* @param {String} hCert hexadecimal string of certificate
* @return {Integer} position in hexadecimal string
* @since x509 1.1.4
* @description
* get position for SubjectPublicKeyInfo field in the hexadecimal string of
* certificate.
*/
X509.getPublicKeyInfoPosOfCertHEX = function(hCert) {
// 1. Certificate ASN.1
var a1 = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, 0);
if (a1.length != 3)
throw "malformed X.509 certificate PEM (code:001)"; // not 3 item of seq Cert
// 2. tbsCertificate
if (hCert.substr(a1[0], 2) != "30")
throw "malformed X.509 certificate PEM (code:002)"; // tbsCert not seq
var a2 = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, a1[0]);
// 3. subjectPublicKeyInfo
if (a2.length < 7)
throw "malformed X.509 certificate PEM (code:003)"; // no subjPubKeyInfo
return a2[6];
};
/**
* get array of X.509 V3 extension value information in hex string of certificate
* @name getV3ExtInfoListOfCertHex
* @memberOf X509
* @function
* @param {String} hCert hexadecimal string of X.509 certificate binary
* @return {Array} array of result object by {@link X509.getV3ExtInfoListOfCertHex}
* @since x509 1.1.5
* @description
* This method will get all extension information of a X.509 certificate.
* Items of resulting array has following properties:
* <ul>
* <li>posTLV - index of ASN.1 TLV for the extension. same as 'pos' argument.</li>
* <li>oid - dot noted string of extension oid (ex. 2.5.29.14)</li>
* <li>critical - critical flag value for this extension</li>
* <li>posV - index of ASN.1 TLV for the extension value.
* This is a position of a content of ENCAPSULATED OCTET STRING.</li>
* </ul>
* @example
* hCert = X509.pemToHex(certGithubPEM);
* a = X509.getV3ExtInfoListOfCertHex(hCert);
* // Then a will be an array of like following:
* [{posTLV: 1952, oid: "2.5.29.35", critical: false, posV: 1968},
* {posTLV: 1974, oid: "2.5.29.19", critical: true, posV: 1986}, ...]
*/
X509.getV3ExtInfoListOfCertHex = function(hCert) {
// 1. Certificate ASN.1
var a1 = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, 0);
if (a1.length != 3)
throw "malformed X.509 certificate PEM (code:001)"; // not 3 item of seq Cert
// 2. tbsCertificate
if (hCert.substr(a1[0], 2) != "30")
throw "malformed X.509 certificate PEM (code:002)"; // tbsCert not seq
var a2 = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, a1[0]);
// 3. v3Extension EXPLICIT Tag [3]
// ver, seri, alg, iss, validity, subj, spki, (iui,) (sui,) ext
if (a2.length < 8)
throw "malformed X.509 certificate PEM (code:003)"; // tbsCert num field too short
if (hCert.substr(a2[7], 2) != "a3")
throw "malformed X.509 certificate PEM (code:004)"; // not [3] tag
var a3 = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, a2[7]);
if (a3.length != 1)
throw "malformed X.509 certificate PEM (code:005)"; // [3]tag numChild!=1
// 4. v3Extension SEQUENCE
if (hCert.substr(a3[0], 2) != "30")
throw "malformed X.509 certificate PEM (code:006)"; // not SEQ
var a4 = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, a3[0]);
// 5. v3Extension item position
var numExt = a4.length;
var aInfo = new Array(numExt);
for (var i = 0; i < numExt; i++) {
aInfo[i] = X509.getV3ExtItemInfo_AtObj(hCert, a4[i]);
}
return aInfo;
};
/**
* get X.509 V3 extension value information at the specified position
* @name getV3ExtItemInfo_AtObj
* @memberOf X509
* @function
* @param {String} hCert hexadecimal string of X.509 certificate binary
* @param {Integer} pos index of hexadecimal string for the extension
* @return {Object} properties for the extension
* @since x509 1.1.5
* @description
* This method will get some information of a X.509 V extension
* which is referred by an index of hexadecimal string of X.509
* certificate.
* Resulting object has following properties:
* <ul>
* <li>posTLV - index of ASN.1 TLV for the extension. same as 'pos' argument.</li>
* <li>oid - dot noted string of extension oid (ex. 2.5.29.14)</li>
* <li>critical - critical flag value for this extension</li>
* <li>posV - index of ASN.1 TLV for the extension value.
* This is a position of a content of ENCAPSULATED OCTET STRING.</li>
* </ul>
* This method is used by {@link X509.getV3ExtInfoListOfCertHex} internally.
*/
X509.getV3ExtItemInfo_AtObj = function(hCert, pos) {
var info = {};
// posTLV - extension TLV
info.posTLV = pos;
var a = ASN1HEX.getPosArrayOfChildren_AtObj(hCert, pos);
if (a.length != 2 && a.length != 3)
throw "malformed X.509v3 Ext (code:001)"; // oid,(critical,)val
// oid - extension OID
if (hCert.substr(a[0], 2) != "06")
throw "malformed X.509v3 Ext (code:002)"; // not OID "06"
var valueHex = ASN1HEX.getHexOfV_AtObj(hCert, a[0]);
info.oid = ASN1HEX.hextooidstr(valueHex);
// critical - extension critical flag
info.critical = false; // critical false by default
if (a.length == 3) info.critical = true;
// posV - content TLV position of encapsulated
// octet string of V3 extension value.
var posExtV = a[a.length - 1];
if (hCert.substr(posExtV, 2) != "04")
throw "malformed X.509v3 Ext (code:003)"; // not EncapOctet "04"
info.posV = ASN1HEX.getStartPosOfV_AtObj(hCert, posExtV);
return info;
};
/**
* get X.509 V3 extension value ASN.1 TLV for specified oid or name
* @name getHexOfTLV_V3ExtValue
* @memberOf X509
* @function
* @param {String} hCert hexadecimal string of X.509 certificate binary
* @param {String} oidOrName oid or name for extension (ex. 'keyUsage' or '2.5.29.15')
* @return {String} hexadecimal string of extension ASN.1 TLV
* @since x509 1.1.6
* @description
* This method will get X.509v3 extension value of ASN.1 TLV
* which is specifyed by extension name or oid.
* If there is no such extension in the certificate, it returns null.
* @example
* hExtValue = X509.getHexOfTLV_V3ExtValue(hCert, "keyUsage");
* // hExtValue will be such like '030205a0'.
*/
X509.getHexOfTLV_V3ExtValue = function(hCert, oidOrName) {
var pos = X509.getPosOfTLV_V3ExtValue(hCert, oidOrName);
if (pos == -1) return null;
return ASN1HEX.getHexOfTLV_AtObj(hCert, pos);
};
/**
* get X.509 V3 extension value ASN.1 V for specified oid or name
* @name getHexOfV_V3ExtValue
* @memberOf X509
* @function
* @param {String} hCert hexadecimal string of X.509 certificate binary
* @param {String} oidOrName oid or name for extension (ex. 'keyUsage' or '2.5.29.15')
* @return {String} hexadecimal string of extension ASN.1 TLV
* @since x509 1.1.6
* @description
* This method will get X.509v3 extension value of ASN.1 value
* which is specifyed by extension name or oid.
* If there is no such extension in the certificate, it returns null.
* Available extension names and oids are defined
* in the {@link KJUR.asn1.x509.OID} class.
* @example
* hExtValue = X509.getHexOfV_V3ExtValue(hCert, "keyUsage");
* // hExtValue will be such like '05a0'.
*/
X509.getHexOfV_V3ExtValue = function(hCert, oidOrName) {
var pos = X509.getPosOfTLV_V3ExtValue(hCert, oidOrName);
if (pos == -1) return null;
return ASN1HEX.getHexOfV_AtObj(hCert, pos);
};
/**
* get index in the certificate hexa string for specified oid or name specified extension
* @name getPosOfTLV_V3ExtValue
* @memberOf X509
* @function
* @param {String} hCert hexadecimal string of X.509 certificate binary
* @param {String} oidOrName oid or name for extension (ex. 'keyUsage' or '2.5.29.15')
* @return {Integer} index in the hexadecimal string of certficate for specified extension
* @since x509 1.1.6
* @description
* This method will get X.509v3 extension value of ASN.1 V(value)
* which is specifyed by extension name or oid.
* If there is no such extension in the certificate,
* it returns -1.
* Available extension names and oids are defined
* in the {@link KJUR.asn1.x509.OID} class.
* @example
* idx = X509.getPosOfV_V3ExtValue(hCert, "keyUsage");
* // The 'idx' will be index in the string for keyUsage value ASN.1 TLV.
*/
X509.getPosOfTLV_V3ExtValue = function(hCert, oidOrName) {
var oid = oidOrName;
if (! oidOrName.match(/^[0-9.]+$/)) oid = KJUR.asn1.x509.OID.name2oid(oidOrName);
if (oid == '') return -1;
var infoList = X509.getV3ExtInfoListOfCertHex(hCert);
for (var i = 0; i < infoList.length; i++) {
var info = infoList[i];
if (info.oid == oid) return info.posV;
}
return -1;
};
/* ======================================================================
* Specific V3 Extensions
* ====================================================================== */
/**
* get BasicConstraints extension value as object in the certificate
* @name getExtBasicConstraints
* @memberOf X509
* @function
* @param {String} hCert hexadecimal string of X.509 certificate binary
* @return {Object} associative array which may have "cA" and "pathLen" parameters
* @since x509 1.1.7
* @description
* This method will get basic constraints extension value as object with following paramters.
* <ul>
* <li>cA - CA flag whether CA or not</li>
* <li>pathLen - maximum intermediate certificate length</li>
* </ul>
* There are use cases for return values:
* <ul>
* <li>{cA:true, pathLen:3} - cA flag is true and pathLen is 3</li>
* <li>{cA:true} - cA flag is true and no pathLen</li>
* <li>{} - basic constraints has no value in case of end entity certificate</li>
* <li>null - there is no basic constraints extension</li>
* </ul>
* @example
* obj = X509.getExtBasicConstraints(hCert);
*/
X509.getExtBasicConstraints = function(hCert) {
var hBC = X509.getHexOfV_V3ExtValue(hCert, "basicConstraints");
if (hBC === null) return null;
if (hBC === '') return {};
if (hBC === '0101ff') return { "cA": true };
if (hBC.substr(0, 8) === '0101ff02') {
var pathLexHex = ASN1HEX.getHexOfV_AtObj(hBC, 6);
var pathLen = parseInt(pathLexHex, 16);
return { "cA": true, "pathLen": pathLen };
}
throw "unknown error";
};
X509.KEYUSAGE_NAME = [
"digitalSignature",
"nonRepudiation",
"keyEncipherment",
"dataEncipherment",
"keyAgreement",
"keyCertSign",
"cRLSign",
"encipherOnly",
"decipherOnly"
];
/**
* get KeyUsage extension value as binary string in the certificate
* @name getExtKeyUsageBin
* @memberOf X509
* @function
* @param {String} hCert hexadecimal string of X.509 certificate binary
* @return {String} binary string of key usage bits (ex. '101')
* @since x509 1.1.6
* @description
* This method will get key usage extension value
* as binary string such like '101'.
* Key usage bits definition is in the RFC 5280.
* If there is no key usage extension in the certificate,
* it returns empty string (i.e. '').
* @example
* bKeyUsage = X509.getExtKeyUsageBin(hCert);
* // bKeyUsage will be such like '101'.
* // 1 - digitalSignature
* // 0 - nonRepudiation
* // 1 - keyEncipherment
*/
X509.getExtKeyUsageBin = function(hCert) {
var hKeyUsage = X509.getHexOfV_V3ExtValue(hCert, "keyUsage");
if (hKeyUsage == '') return '';
if (hKeyUsage.length % 2 != 0 || hKeyUsage.length <= 2)
throw "malformed key usage value";
var unusedBits = parseInt(hKeyUsage.substr(0, 2));
var bKeyUsage = parseInt(hKeyUsage.substr(2), 16).toString(2);
return bKeyUsage.substr(0, bKeyUsage.length - unusedBits);
};
/**
* get KeyUsage extension value as names in the certificate
* @name getExtKeyUsageString
* @memberOf X509
* @function
* @param {String} hCert hexadecimal string of X.509 certificate binary
* @return {String} comma separated string of key usage
* @since x509 1.1.6
* @description
* This method will get key usage extension value
* as comma separated string of usage names.
* If there is no key usage extension in the certificate,
* it returns empty string (i.e. '').
* @example
* sKeyUsage = X509.getExtKeyUsageString(hCert);
* // sKeyUsage will be such like 'digitalSignature,keyEncipherment'.
*/
X509.getExtKeyUsageString = function(hCert) {
var bKeyUsage = X509.getExtKeyUsageBin(hCert);
var a = new Array();
for (var i = 0; i < bKeyUsage.length; i++) {
if (bKeyUsage.substr(i, 1) == "1") a.push(X509.KEYUSAGE_NAME[i]);
}
return a.join(",");
};
/**
* get subjectKeyIdentifier value as hexadecimal string in the certificate
* @name getExtSubjectKeyIdentifier
* @memberOf X509
* @function
* @param {String} hCert hexadecimal string of X.509 certificate binary
* @return {String} hexadecimal string of subject key identifier or null
* @since jsrsasign 5.0.10 x509 1.1.8
* @description
* This method will get subject key identifier extension value
* as hexadecimal string.
* If there is no its extension in the certificate,
* it returns null.
* @example
* skid = X509.getExtSubjectKeyIdentifier(hCert);
*/
X509.getExtSubjectKeyIdentifier = function(hCert) {
var hSKID = X509.getHexOfV_V3ExtValue(hCert, "subjectKeyIdentifier");
return hSKID;
};
/**
* get authorityKeyIdentifier value as JSON object in the certificate
* @name getExtAuthorityKeyIdentifier
* @memberOf X509
* @function
* @param {String} hCert hexadecimal string of X.509 certificate binary
* @return {Object} JSON object of authority key identifier or null
* @since jsrsasign 5.0.10 x509 1.1.8