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x509.js
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/**
* Javascript implementation of X.509 and related components (such as
* Certification Signing Requests) of a Public Key Infrastructure.
*
* @author Dave Longley
*
* Copyright (c) 2010-2014 Digital Bazaar, Inc.
*
* The ASN.1 representation of an X.509v3 certificate is as follows
* (see RFC 2459):
*
* Certificate ::= SEQUENCE {
* tbsCertificate TBSCertificate,
* signatureAlgorithm AlgorithmIdentifier,
* signatureValue BIT STRING
* }
*
* TBSCertificate ::= SEQUENCE {
* version [0] EXPLICIT Version DEFAULT v1,
* serialNumber CertificateSerialNumber,
* signature AlgorithmIdentifier,
* issuer Name,
* validity Validity,
* subject Name,
* subjectPublicKeyInfo SubjectPublicKeyInfo,
* issuerUniqueID [1] IMPLICIT UniqueIdentifier OPTIONAL,
* -- If present, version shall be v2 or v3
* subjectUniqueID [2] IMPLICIT UniqueIdentifier OPTIONAL,
* -- If present, version shall be v2 or v3
* extensions [3] EXPLICIT Extensions OPTIONAL
* -- If present, version shall be v3
* }
*
* Version ::= INTEGER { v1(0), v2(1), v3(2) }
*
* CertificateSerialNumber ::= INTEGER
*
* Name ::= CHOICE {
* // only one possible choice for now
* RDNSequence
* }
*
* RDNSequence ::= SEQUENCE OF RelativeDistinguishedName
*
* RelativeDistinguishedName ::= SET OF AttributeTypeAndValue
*
* AttributeTypeAndValue ::= SEQUENCE {
* type AttributeType,
* value AttributeValue
* }
* AttributeType ::= OBJECT IDENTIFIER
* AttributeValue ::= ANY DEFINED BY AttributeType
*
* Validity ::= SEQUENCE {
* notBefore Time,
* notAfter Time
* }
*
* Time ::= CHOICE {
* utcTime UTCTime,
* generalTime GeneralizedTime
* }
*
* UniqueIdentifier ::= BIT STRING
*
* SubjectPublicKeyInfo ::= SEQUENCE {
* algorithm AlgorithmIdentifier,
* subjectPublicKey BIT STRING
* }
*
* Extensions ::= SEQUENCE SIZE (1..MAX) OF Extension
*
* Extension ::= SEQUENCE {
* extnID OBJECT IDENTIFIER,
* critical BOOLEAN DEFAULT FALSE,
* extnValue OCTET STRING
* }
*
* The only key algorithm currently supported for PKI is RSA.
*
* RSASSA-PSS signatures are described in RFC 3447 and RFC 4055.
*
* PKCS#10 v1.7 describes certificate signing requests:
*
* CertificationRequestInfo:
*
* CertificationRequestInfo ::= SEQUENCE {
* version INTEGER { v1(0) } (v1,...),
* subject Name,
* subjectPKInfo SubjectPublicKeyInfo{{ PKInfoAlgorithms }},
* attributes [0] Attributes{{ CRIAttributes }}
* }
*
* Attributes { ATTRIBUTE:IOSet } ::= SET OF Attribute{{ IOSet }}
*
* CRIAttributes ATTRIBUTE ::= {
* ... -- add any locally defined attributes here -- }
*
* Attribute { ATTRIBUTE:IOSet } ::= SEQUENCE {
* type ATTRIBUTE.&id({IOSet}),
* values SET SIZE(1..MAX) OF ATTRIBUTE.&Type({IOSet}{@type})
* }
*
* CertificationRequest ::= SEQUENCE {
* certificationRequestInfo CertificationRequestInfo,
* signatureAlgorithm AlgorithmIdentifier{{ SignatureAlgorithms }},
* signature BIT STRING
* }
*/
var forge = require('./forge');
require('./aes');
require('./asn1');
require('./des');
require('./md');
require('./mgf');
require('./oids');
require('./pem');
require('./pss');
require('./rsa');
require('./util');
// shortcut for asn.1 API
var asn1 = forge.asn1;
/* Public Key Infrastructure (PKI) implementation. */
var pki = module.exports = forge.pki = forge.pki || {};
var oids = pki.oids;
var extensionSchemas = {};
// short name OID mappings
var _shortNames = {};
_shortNames['CN'] = oids['commonName'];
_shortNames['commonName'] = 'CN';
_shortNames['C'] = oids['countryName'];
_shortNames['countryName'] = 'C';
_shortNames['L'] = oids['localityName'];
_shortNames['localityName'] = 'L';
_shortNames['ST'] = oids['stateOrProvinceName'];
_shortNames['stateOrProvinceName'] = 'ST';
_shortNames['O'] = oids['organizationName'];
_shortNames['organizationName'] = 'O';
_shortNames['OU'] = oids['organizationalUnitName'];
_shortNames['organizationalUnitName'] = 'OU';
_shortNames['E'] = oids['emailAddress'];
_shortNames['emailAddress'] = 'E';
// validator for an SubjectPublicKeyInfo structure
// Note: Currently only works with an RSA public key
var publicKeyValidator = forge.pki.rsa.publicKeyValidator;
// validator for an X.509v3 certificate
var basicConstraintsValidator = {
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
value: [{
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.BOOLEAN,
constructed: false,
optional: true,
capture: 'cA'
},
{
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.INTEGER,
constructed: false,
optional: true,
capture: 'pathLenConstraint'
}]
};
var extensionsValidator = {
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
value: [{
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.OID,
constructed: false,
capture: 'extId'
},
{
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.BOOLEAN,
constructed: false,
optional: true,
capture: 'critical'
},
{
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.OctetString,
constructed: false,
capture: 'extValue'
}]
};
var x509CertificateValidator = {
name: 'Certificate',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
value: [{
name: 'Certificate.TBSCertificate',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
captureAsn1: 'tbsCertificate',
value: [{
name: 'Certificate.TBSCertificate.version',
tagClass: asn1.Class.CONTEXT_SPECIFIC,
type: 0,
constructed: true,
optional: true,
value: [{
name: 'Certificate.TBSCertificate.version.integer',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.INTEGER,
constructed: false,
capture: 'certVersion'
}]
}, {
name: 'Certificate.TBSCertificate.serialNumber',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.INTEGER,
constructed: false,
capture: 'certSerialNumber'
}, {
name: 'Certificate.TBSCertificate.signature',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
value: [{
name: 'Certificate.TBSCertificate.signature.algorithm',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.OID,
constructed: false,
capture: 'certinfoSignatureOid'
}, {
name: 'Certificate.TBSCertificate.signature.parameters',
tagClass: asn1.Class.UNIVERSAL,
optional: true,
captureAsn1: 'certinfoSignatureParams'
}]
}, {
name: 'Certificate.TBSCertificate.issuer',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
captureAsn1: 'certIssuer'
}, {
name: 'Certificate.TBSCertificate.validity',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
// Note: UTC and generalized times may both appear so the capture
// names are based on their detected order, the names used below
// are only for the common case, which validity time really means
// "notBefore" and which means "notAfter" will be determined by order
value: [{
// notBefore (Time) (UTC time case)
name: 'Certificate.TBSCertificate.validity.notBefore (utc)',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.UTCTIME,
constructed: false,
optional: true,
capture: 'certValidity1UTCTime'
}, {
// notBefore (Time) (generalized time case)
name: 'Certificate.TBSCertificate.validity.notBefore (generalized)',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.GENERALIZEDTIME,
constructed: false,
optional: true,
capture: 'certValidity2GeneralizedTime'
}, {
// notAfter (Time) (only UTC time is supported)
name: 'Certificate.TBSCertificate.validity.notAfter (utc)',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.UTCTIME,
constructed: false,
optional: true,
capture: 'certValidity3UTCTime'
}, {
// notAfter (Time) (only UTC time is supported)
name: 'Certificate.TBSCertificate.validity.notAfter (generalized)',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.GENERALIZEDTIME,
constructed: false,
optional: true,
capture: 'certValidity4GeneralizedTime'
}]
}, {
// Name (subject) (RDNSequence)
name: 'Certificate.TBSCertificate.subject',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
captureAsn1: 'certSubject'
},
// SubjectPublicKeyInfo
publicKeyValidator,
{
// issuerUniqueID (optional)
name: 'Certificate.TBSCertificate.issuerUniqueID',
tagClass: asn1.Class.CONTEXT_SPECIFIC,
type: 1,
constructed: true,
optional: true,
value: [{
name: 'Certificate.TBSCertificate.issuerUniqueID.id',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.BITSTRING,
constructed: false,
// TODO: support arbitrary bit length ids
captureBitStringValue: 'certIssuerUniqueId'
}]
}, {
// subjectUniqueID (optional)
name: 'Certificate.TBSCertificate.subjectUniqueID',
tagClass: asn1.Class.CONTEXT_SPECIFIC,
type: 2,
constructed: true,
optional: true,
value: [{
name: 'Certificate.TBSCertificate.subjectUniqueID.id',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.BITSTRING,
constructed: false,
// TODO: support arbitrary bit length ids
captureBitStringValue: 'certSubjectUniqueId'
}]
}, {
// Extensions (optional)
name: 'Certificate.TBSCertificate.extensions',
tagClass: asn1.Class.CONTEXT_SPECIFIC,
type: 3,
constructed: true,
captureAsn1: 'certExtensions',
optional: true
}]
}, {
// AlgorithmIdentifier (signature algorithm)
name: 'Certificate.signatureAlgorithm',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
value: [{
// algorithm
name: 'Certificate.signatureAlgorithm.algorithm',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.OID,
constructed: false,
capture: 'certSignatureOid'
}, {
name: 'Certificate.TBSCertificate.signature.parameters',
tagClass: asn1.Class.UNIVERSAL,
optional: true,
captureAsn1: 'certSignatureParams'
}]
}, {
// SignatureValue
name: 'Certificate.signatureValue',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.BITSTRING,
constructed: false,
captureBitStringValue: 'certSignature'
}]
};
var rsassaPssParameterValidator = {
name: 'rsapss',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
value: [{
name: 'rsapss.hashAlgorithm',
tagClass: asn1.Class.CONTEXT_SPECIFIC,
type: 0,
constructed: true,
value: [{
name: 'rsapss.hashAlgorithm.AlgorithmIdentifier',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Class.SEQUENCE,
constructed: true,
optional: true,
value: [{
name: 'rsapss.hashAlgorithm.AlgorithmIdentifier.algorithm',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.OID,
constructed: false,
capture: 'hashOid'
/* parameter block omitted, for SHA1 NULL anyhow. */
}]
}]
}, {
name: 'rsapss.maskGenAlgorithm',
tagClass: asn1.Class.CONTEXT_SPECIFIC,
type: 1,
constructed: true,
value: [{
name: 'rsapss.maskGenAlgorithm.AlgorithmIdentifier',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Class.SEQUENCE,
constructed: true,
optional: true,
value: [{
name: 'rsapss.maskGenAlgorithm.AlgorithmIdentifier.algorithm',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.OID,
constructed: false,
capture: 'maskGenOid'
}, {
name: 'rsapss.maskGenAlgorithm.AlgorithmIdentifier.params',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
value: [{
name: 'rsapss.maskGenAlgorithm.AlgorithmIdentifier.params.algorithm',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.OID,
constructed: false,
capture: 'maskGenHashOid'
/* parameter block omitted, for SHA1 NULL anyhow. */
}]
}]
}]
}, {
name: 'rsapss.saltLength',
tagClass: asn1.Class.CONTEXT_SPECIFIC,
type: 2,
optional: true,
value: [{
name: 'rsapss.saltLength.saltLength',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Class.INTEGER,
constructed: false,
capture: 'saltLength'
}]
}, {
name: 'rsapss.trailerField',
tagClass: asn1.Class.CONTEXT_SPECIFIC,
type: 3,
optional: true,
value: [{
name: 'rsapss.trailer.trailer',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Class.INTEGER,
constructed: false,
capture: 'trailer'
}]
}]
};
// validator for a CertificationRequestInfo structure
var certificationRequestInfoValidator = {
name: 'CertificationRequestInfo',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
captureAsn1: 'certificationRequestInfo',
value: [{
name: 'CertificationRequestInfo.integer',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.INTEGER,
constructed: false,
capture: 'certificationRequestInfoVersion'
}, {
// Name (subject) (RDNSequence)
name: 'CertificationRequestInfo.subject',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
captureAsn1: 'certificationRequestInfoSubject'
},
// SubjectPublicKeyInfo
publicKeyValidator,
{
name: 'CertificationRequestInfo.attributes',
tagClass: asn1.Class.CONTEXT_SPECIFIC,
type: 0,
constructed: true,
optional: true,
capture: 'certificationRequestInfoAttributes',
value: [{
name: 'CertificationRequestInfo.attributes',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
value: [{
name: 'CertificationRequestInfo.attributes.type',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.OID,
constructed: false
}, {
name: 'CertificationRequestInfo.attributes.value',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SET,
constructed: true
}]
}]
}]
};
// validator for a CertificationRequest structure
var certificationRequestValidator = {
name: 'CertificationRequest',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
captureAsn1: 'csr',
value: [
certificationRequestInfoValidator, {
// AlgorithmIdentifier (signature algorithm)
name: 'CertificationRequest.signatureAlgorithm',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.SEQUENCE,
constructed: true,
value: [{
// algorithm
name: 'CertificationRequest.signatureAlgorithm.algorithm',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.OID,
constructed: false,
capture: 'csrSignatureOid'
}, {
name: 'CertificationRequest.signatureAlgorithm.parameters',
tagClass: asn1.Class.UNIVERSAL,
optional: true,
captureAsn1: 'csrSignatureParams'
}]
}, {
// signature
name: 'CertificationRequest.signature',
tagClass: asn1.Class.UNIVERSAL,
type: asn1.Type.BITSTRING,
constructed: false,
captureBitStringValue: 'csrSignature'
}
]
};
/**
* Converts an RDNSequence of ASN.1 DER-encoded RelativeDistinguishedName
* sets into an array with objects that have type and value properties.
*
* @param rdn the RDNSequence to convert.
* @param md a message digest to append type and value to if provided.
*/
pki.RDNAttributesAsArray = function(rdn, md) {
var rval = [];
// each value in 'rdn' in is a SET of RelativeDistinguishedName
var set, attr, obj;
for(var si = 0; si < rdn.value.length; ++si) {
// get the RelativeDistinguishedName set
set = rdn.value[si];
// each value in the SET is an AttributeTypeAndValue sequence
// containing first a type (an OID) and second a value (defined by
// the OID)
for(var i = 0; i < set.value.length; ++i) {
obj = {};
attr = set.value[i];
obj.type = asn1.derToOid(attr.value[0].value);
obj.value = attr.value[1].value;
obj.valueTagClass = attr.value[1].type;
// if the OID is known, get its name and short name
if(obj.type in oids) {
obj.name = oids[obj.type];
if(obj.name in _shortNames) {
obj.shortName = _shortNames[obj.name];
}
}
if(md) {
md.update(obj.type);
md.update(obj.value);
}
rval.push(obj);
}
}
return rval;
};
/**
* Converts ASN.1 CRIAttributes into an array with objects that have type and
* value properties.
*
* @param attributes the CRIAttributes to convert.
*/
pki.CRIAttributesAsArray = function(attributes) {
var rval = [];
// each value in 'attributes' in is a SEQUENCE with an OID and a SET
for(var si = 0; si < attributes.length; ++si) {
// get the attribute sequence
var seq = attributes[si];
// each value in the SEQUENCE containing first a type (an OID) and
// second a set of values (defined by the OID)
var type = asn1.derToOid(seq.value[0].value);
var values = seq.value[1].value;
for(var vi = 0; vi < values.length; ++vi) {
var obj = {};
obj.type = type;
obj.value = values[vi].value;
obj.valueTagClass = values[vi].type;
// if the OID is known, get its name and short name
if(obj.type in oids) {
obj.name = oids[obj.type];
if(obj.name in _shortNames) {
obj.shortName = _shortNames[obj.name];
}
}
// parse extensions
if(obj.type === oids.extensionRequest) {
obj.extensions = [];
for(var ei = 0; ei < obj.value.length; ++ei) {
obj.extensions.push(pki.certificateExtensionFromAsn1(obj.value[ei]));
}
}
rval.push(obj);
}
}
return rval;
};
/**
* Gets an issuer or subject attribute from its name, type, or short name.
*
* @param obj the issuer or subject object.
* @param options a short name string or an object with:
* shortName the short name for the attribute.
* name the name for the attribute.
* type the type for the attribute.
*
* @return the attribute.
*/
function _getAttribute(obj, options) {
if(typeof options === 'string') {
options = {shortName: options};
}
var rval = null;
var attr;
for(var i = 0; rval === null && i < obj.attributes.length; ++i) {
attr = obj.attributes[i];
if(options.type && options.type === attr.type) {
rval = attr;
} else if(options.name && options.name === attr.name) {
rval = attr;
} else if(options.shortName && options.shortName === attr.shortName) {
rval = attr;
}
}
return rval;
}
/**
* Converts signature parameters from ASN.1 structure.
*
* Currently only RSASSA-PSS supported. The PKCS#1 v1.5 signature scheme had
* no parameters.
*
* RSASSA-PSS-params ::= SEQUENCE {
* hashAlgorithm [0] HashAlgorithm DEFAULT
* sha1Identifier,
* maskGenAlgorithm [1] MaskGenAlgorithm DEFAULT
* mgf1SHA1Identifier,
* saltLength [2] INTEGER DEFAULT 20,
* trailerField [3] INTEGER DEFAULT 1
* }
*
* HashAlgorithm ::= AlgorithmIdentifier
*
* MaskGenAlgorithm ::= AlgorithmIdentifier
*
* AlgorithmIdentifer ::= SEQUENCE {
* algorithm OBJECT IDENTIFIER,
* parameters ANY DEFINED BY algorithm OPTIONAL
* }
*
* @param oid The OID specifying the signature algorithm
* @param obj The ASN.1 structure holding the parameters
* @param fillDefaults Whether to use return default values where omitted
* @return signature parameter object
*/
var _readSignatureParameters = function(oid, obj, fillDefaults) {
var params = {};
if(oid !== oids['RSASSA-PSS']) {
return params;
}
if(fillDefaults) {
params = {
hash: {
algorithmOid: oids['sha1']
},
mgf: {
algorithmOid: oids['mgf1'],
hash: {
algorithmOid: oids['sha1']
}
},
saltLength: 20
};
}
var capture = {};
var errors = [];
if(!asn1.validate(obj, rsassaPssParameterValidator, capture, errors)) {
var error = new Error('Cannot read RSASSA-PSS parameter block.');
error.errors = errors;
throw error;
}
if(capture.hashOid !== undefined) {
params.hash = params.hash || {};
params.hash.algorithmOid = asn1.derToOid(capture.hashOid);
}
if(capture.maskGenOid !== undefined) {
params.mgf = params.mgf || {};
params.mgf.algorithmOid = asn1.derToOid(capture.maskGenOid);
params.mgf.hash = params.mgf.hash || {};
params.mgf.hash.algorithmOid = asn1.derToOid(capture.maskGenHashOid);
}
if(capture.saltLength !== undefined) {
params.saltLength = capture.saltLength.charCodeAt(0);
}
return params;
};
/**
* Converts an X.509 certificate from PEM format.
*
* Note: If the certificate is to be verified then compute hash should
* be set to true. This will scan the TBSCertificate part of the ASN.1
* object while it is converted so it doesn't need to be converted back
* to ASN.1-DER-encoding later.
*
* @param pem the PEM-formatted certificate.
* @param computeHash true to compute the hash for verification.
* @param strict true to be strict when checking ASN.1 value lengths, false to
* allow truncated values (default: true).
*
* @return the certificate.
*/
pki.certificateFromPem = function(pem, computeHash, strict) {
var msg = forge.pem.decode(pem)[0];
if(msg.type !== 'CERTIFICATE' &&
msg.type !== 'X509 CERTIFICATE' &&
msg.type !== 'TRUSTED CERTIFICATE') {
var error = new Error(
'Could not convert certificate from PEM; PEM header type ' +
'is not "CERTIFICATE", "X509 CERTIFICATE", or "TRUSTED CERTIFICATE".');
error.headerType = msg.type;
throw error;
}
if(msg.procType && msg.procType.type === 'ENCRYPTED') {
throw new Error(
'Could not convert certificate from PEM; PEM is encrypted.');
}
// convert DER to ASN.1 object
var obj = asn1.fromDer(msg.body, strict);
return pki.certificateFromAsn1(obj, computeHash);
};
/**
* Converts an X.509 certificate to PEM format.
*
* @param cert the certificate.
* @param maxline the maximum characters per line, defaults to 64.
*
* @return the PEM-formatted certificate.
*/
pki.certificateToPem = function(cert, maxline) {
// convert to ASN.1, then DER, then PEM-encode
var msg = {
type: 'CERTIFICATE',
body: asn1.toDer(pki.certificateToAsn1(cert)).getBytes()
};
return forge.pem.encode(msg, {maxline: maxline});
};
/**
* Converts an RSA public key from PEM format.
*
* @param pem the PEM-formatted public key.
*
* @return the public key.
*/
pki.publicKeyFromPem = function(pem) {
var msg = forge.pem.decode(pem)[0];
if(msg.type !== 'PUBLIC KEY' && msg.type !== 'RSA PUBLIC KEY') {
var error = new Error('Could not convert public key from PEM; PEM header ' +
'type is not "PUBLIC KEY" or "RSA PUBLIC KEY".');
error.headerType = msg.type;
throw error;
}
if(msg.procType && msg.procType.type === 'ENCRYPTED') {
throw new Error('Could not convert public key from PEM; PEM is encrypted.');
}
// convert DER to ASN.1 object
var obj = asn1.fromDer(msg.body);
return pki.publicKeyFromAsn1(obj);
};
/**
* Converts an RSA public key to PEM format (using a SubjectPublicKeyInfo).
*
* @param key the public key.
* @param maxline the maximum characters per line, defaults to 64.
*
* @return the PEM-formatted public key.
*/
pki.publicKeyToPem = function(key, maxline) {
// convert to ASN.1, then DER, then PEM-encode
var msg = {
type: 'PUBLIC KEY',
body: asn1.toDer(pki.publicKeyToAsn1(key)).getBytes()
};
return forge.pem.encode(msg, {maxline: maxline});
};
/**
* Converts an RSA public key to PEM format (using an RSAPublicKey).
*
* @param key the public key.
* @param maxline the maximum characters per line, defaults to 64.
*
* @return the PEM-formatted public key.
*/
pki.publicKeyToRSAPublicKeyPem = function(key, maxline) {
// convert to ASN.1, then DER, then PEM-encode
var msg = {
type: 'RSA PUBLIC KEY',
body: asn1.toDer(pki.publicKeyToRSAPublicKey(key)).getBytes()
};
return forge.pem.encode(msg, {maxline: maxline});
};
/**
* Gets a fingerprint for the given public key.
*
* @param options the options to use.
* [md] the message digest object to use (defaults to forge.md.sha1).
* [type] the type of fingerprint, such as 'RSAPublicKey',
* 'SubjectPublicKeyInfo' (defaults to 'RSAPublicKey').
* [encoding] an alternative output encoding, such as 'hex'
* (defaults to none, outputs a byte buffer).
* [delimiter] the delimiter to use between bytes for 'hex' encoded
* output, eg: ':' (defaults to none).
*
* @return the fingerprint as a byte buffer or other encoding based on options.
*/
pki.getPublicKeyFingerprint = function(key, options) {
options = options || {};
var md = options.md || forge.md.sha1.create();
var type = options.type || 'RSAPublicKey';
var bytes;
switch(type) {
case 'RSAPublicKey':
bytes = asn1.toDer(pki.publicKeyToRSAPublicKey(key)).getBytes();
break;
case 'SubjectPublicKeyInfo':
bytes = asn1.toDer(pki.publicKeyToAsn1(key)).getBytes();
break;
default:
throw new Error('Unknown fingerprint type "' + options.type + '".');
}
// hash public key bytes
md.start();
md.update(bytes);
var digest = md.digest();
if(options.encoding === 'hex') {
var hex = digest.toHex();
if(options.delimiter) {
return hex.match(/.{2}/g).join(options.delimiter);
}
return hex;
} else if(options.encoding === 'binary') {
return digest.getBytes();
} else if(options.encoding) {
throw new Error('Unknown encoding "' + options.encoding + '".');
}
return digest;
};
/**
* Converts a PKCS#10 certification request (CSR) from PEM format.
*
* Note: If the certification request is to be verified then compute hash
* should be set to true. This will scan the CertificationRequestInfo part of
* the ASN.1 object while it is converted so it doesn't need to be converted
* back to ASN.1-DER-encoding later.
*
* @param pem the PEM-formatted certificate.
* @param computeHash true to compute the hash for verification.
* @param strict true to be strict when checking ASN.1 value lengths, false to
* allow truncated values (default: true).
*
* @return the certification request (CSR).
*/
pki.certificationRequestFromPem = function(pem, computeHash, strict) {
var msg = forge.pem.decode(pem)[0];
if(msg.type !== 'CERTIFICATE REQUEST') {
var error = new Error('Could not convert certification request from PEM; ' +
'PEM header type is not "CERTIFICATE REQUEST".');
error.headerType = msg.type;
throw error;
}
if(msg.procType && msg.procType.type === 'ENCRYPTED') {
throw new Error('Could not convert certification request from PEM; ' +
'PEM is encrypted.');
}
// convert DER to ASN.1 object
var obj = asn1.fromDer(msg.body, strict);
return pki.certificationRequestFromAsn1(obj, computeHash);
};
/**
* Converts a PKCS#10 certification request (CSR) to PEM format.
*
* @param csr the certification request.
* @param maxline the maximum characters per line, defaults to 64.
*
* @return the PEM-formatted certification request.
*/
pki.certificationRequestToPem = function(csr, maxline) {
// convert to ASN.1, then DER, then PEM-encode
var msg = {
type: 'CERTIFICATE REQUEST',
body: asn1.toDer(pki.certificationRequestToAsn1(csr)).getBytes()
};
return forge.pem.encode(msg, {maxline: maxline});
};
/**
* Creates an empty X.509v3 RSA certificate.
*
* @return the certificate.
*/
pki.createCertificate = function() {
var cert = {};
cert.version = 0x02;
cert.serialNumber = '00';
cert.signatureOid = null;
cert.signature = null;
cert.siginfo = {};
cert.siginfo.algorithmOid = null;
cert.validity = {};
cert.validity.notBefore = new Date();
cert.validity.notAfter = new Date();
cert.issuer = {};
cert.issuer.getField = function(sn) {
return _getAttribute(cert.issuer, sn);
};
cert.issuer.addField = function(attr) {
_fillMissingFields([attr]);
cert.issuer.attributes.push(attr);
};
cert.issuer.attributes = [];
cert.issuer.hash = null;
cert.subject = {};
cert.subject.getField = function(sn) {
return _getAttribute(cert.subject, sn);
};
cert.subject.addField = function(attr) {
_fillMissingFields([attr]);
cert.subject.attributes.push(attr);
};
cert.subject.attributes = [];
cert.subject.hash = null;
cert.extensions = [];
cert.rawAsn1Extensions = [];
cert.publicKey = null;
cert.md = null;
/**
* Sets the subject of this certificate.
*
* @param attrs the array of subject attributes to use.
* @param uniqueId an optional a unique ID to use.