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1111 lines
32 KiB
JavaScript
1111 lines
32 KiB
JavaScript
/**
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* Javascript implementation of PKCS#12.
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*
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* @author Dave Longley
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* @author Stefan Siegl <stesie@brokenpipe.de>
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*
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* Copyright (c) 2010-2013 Digital Bazaar, Inc.
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* Copyright (c) 2012 Stefan Siegl <stesie@brokenpipe.de>
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*
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* The ASN.1 representation of PKCS#12 is as follows
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* (see ftp://ftp.rsasecurity.com/pub/pkcs/pkcs-12/pkcs-12-tc1.pdf for details)
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*
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* PFX ::= SEQUENCE {
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* version INTEGER {v3(3)}(v3,...),
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* authSafe ContentInfo,
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* macData MacData OPTIONAL
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* }
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*
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* MacData ::= SEQUENCE {
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* mac DigestInfo,
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* macSalt OCTET STRING,
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* iterations INTEGER DEFAULT 1
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* }
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* Note: The iterations default is for historical reasons and its use is
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* deprecated. A higher value, like 1024, is recommended.
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*
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* DigestInfo is defined in PKCS#7 as follows:
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*
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* DigestInfo ::= SEQUENCE {
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* digestAlgorithm DigestAlgorithmIdentifier,
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* digest Digest
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* }
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*
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* DigestAlgorithmIdentifier ::= AlgorithmIdentifier
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*
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* The AlgorithmIdentifier contains an Object Identifier (OID) and parameters
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* for the algorithm, if any. In the case of SHA1 there is none.
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*
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* AlgorithmIdentifer ::= SEQUENCE {
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* algorithm OBJECT IDENTIFIER,
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* parameters ANY DEFINED BY algorithm OPTIONAL
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* }
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*
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* Digest ::= OCTET STRING
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*
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*
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* ContentInfo ::= SEQUENCE {
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* contentType ContentType,
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* content [0] EXPLICIT ANY DEFINED BY contentType OPTIONAL
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* }
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*
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* ContentType ::= OBJECT IDENTIFIER
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*
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* AuthenticatedSafe ::= SEQUENCE OF ContentInfo
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* -- Data if unencrypted
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* -- EncryptedData if password-encrypted
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* -- EnvelopedData if public key-encrypted
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*
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*
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* SafeContents ::= SEQUENCE OF SafeBag
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*
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* SafeBag ::= SEQUENCE {
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* bagId BAG-TYPE.&id ({PKCS12BagSet})
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* bagValue [0] EXPLICIT BAG-TYPE.&Type({PKCS12BagSet}{@bagId}),
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* bagAttributes SET OF PKCS12Attribute OPTIONAL
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* }
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*
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* PKCS12Attribute ::= SEQUENCE {
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* attrId ATTRIBUTE.&id ({PKCS12AttrSet}),
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* attrValues SET OF ATTRIBUTE.&Type ({PKCS12AttrSet}{@attrId})
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* } -- This type is compatible with the X.500 type ’Attribute’
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*
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* PKCS12AttrSet ATTRIBUTE ::= {
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* friendlyName | -- from PKCS #9
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* localKeyId, -- from PKCS #9
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* ... -- Other attributes are allowed
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* }
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*
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* CertBag ::= SEQUENCE {
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* certId BAG-TYPE.&id ({CertTypes}),
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* certValue [0] EXPLICIT BAG-TYPE.&Type ({CertTypes}{@certId})
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* }
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*
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* x509Certificate BAG-TYPE ::= {OCTET STRING IDENTIFIED BY {certTypes 1}}
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* -- DER-encoded X.509 certificate stored in OCTET STRING
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*
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* sdsiCertificate BAG-TYPE ::= {IA5String IDENTIFIED BY {certTypes 2}}
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* -- Base64-encoded SDSI certificate stored in IA5String
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*
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* CertTypes BAG-TYPE ::= {
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* x509Certificate |
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* sdsiCertificate,
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* ... -- For future extensions
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* }
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*/
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(function() {
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/* ########## Begin module implementation ########## */
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function initModule(forge) {
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// shortcut for asn.1 & PKI API
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var asn1 = forge.asn1;
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var pki = forge.pki;
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// shortcut for PKCS#12 API
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var p12 = forge.pkcs12 = forge.pkcs12 || {};
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var contentInfoValidator = {
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name: 'ContentInfo',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.SEQUENCE, // a ContentInfo
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constructed: true,
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value: [{
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name: 'ContentInfo.contentType',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.OID,
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constructed: false,
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capture: 'contentType'
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}, {
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name: 'ContentInfo.content',
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tagClass: asn1.Class.CONTEXT_SPECIFIC,
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constructed: true,
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captureAsn1: 'content'
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}]
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};
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var pfxValidator = {
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name: 'PFX',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.SEQUENCE,
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constructed: true,
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value: [{
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name: 'PFX.version',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.INTEGER,
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constructed: false,
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capture: 'version'
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},
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contentInfoValidator, {
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name: 'PFX.macData',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.SEQUENCE,
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constructed: true,
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optional: true,
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captureAsn1: 'mac',
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value: [{
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name: 'PFX.macData.mac',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.SEQUENCE, // DigestInfo
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constructed: true,
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value: [{
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name: 'PFX.macData.mac.digestAlgorithm',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.SEQUENCE, // DigestAlgorithmIdentifier
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constructed: true,
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value: [{
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name: 'PFX.macData.mac.digestAlgorithm.algorithm',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.OID,
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constructed: false,
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capture: 'macAlgorithm'
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}, {
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name: 'PFX.macData.mac.digestAlgorithm.parameters',
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tagClass: asn1.Class.UNIVERSAL,
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captureAsn1: 'macAlgorithmParameters'
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}]
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}, {
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name: 'PFX.macData.mac.digest',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.OCTETSTRING,
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constructed: false,
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capture: 'macDigest'
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}]
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}, {
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name: 'PFX.macData.macSalt',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.OCTETSTRING,
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constructed: false,
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capture: 'macSalt'
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}, {
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name: 'PFX.macData.iterations',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.INTEGER,
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constructed: false,
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optional: true,
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capture: 'macIterations'
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}]
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}]
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};
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var safeBagValidator = {
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name: 'SafeBag',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.SEQUENCE,
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constructed: true,
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value: [{
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name: 'SafeBag.bagId',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.OID,
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constructed: false,
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capture: 'bagId'
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}, {
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name: 'SafeBag.bagValue',
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tagClass: asn1.Class.CONTEXT_SPECIFIC,
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constructed: true,
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captureAsn1: 'bagValue'
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}, {
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name: 'SafeBag.bagAttributes',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.SET,
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constructed: true,
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optional: true,
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capture: 'bagAttributes'
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}]
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};
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var attributeValidator = {
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name: 'Attribute',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.SEQUENCE,
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constructed: true,
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value: [{
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name: 'Attribute.attrId',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.OID,
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constructed: false,
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capture: 'oid'
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}, {
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name: 'Attribute.attrValues',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.SET,
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constructed: true,
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capture: 'values'
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}]
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};
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var certBagValidator = {
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name: 'CertBag',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.SEQUENCE,
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constructed: true,
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value: [{
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name: 'CertBag.certId',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.OID,
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constructed: false,
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capture: 'certId'
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}, {
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name: 'CertBag.certValue',
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tagClass: asn1.Class.CONTEXT_SPECIFIC,
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constructed: true,
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/* So far we only support X.509 certificates (which are wrapped in
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an OCTET STRING, hence hard code that here). */
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value: [{
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name: 'CertBag.certValue[0]',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Class.OCTETSTRING,
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constructed: false,
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capture: 'cert'
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}]
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}]
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};
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/**
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* Search SafeContents structure for bags with matching attributes.
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*
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* The search can optionally be narrowed by a certain bag type.
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*
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* @param safeContents The SafeContents structure to search in.
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* @param attrName The name of the attribute to compare against.
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* @param attrValue The attribute value to search for.
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* @param bagType Optional bag type to narrow search by.
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* @return Array of matching bags
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*/
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function _getBagsByAttribute(safeContents, attrName, attrValue, bagType) {
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var result = [];
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for(var i = 0; i < safeContents.length; i ++) {
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for(var j = 0; j < safeContents[i].safeBags.length; j ++) {
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var bag = safeContents[i].safeBags[j];
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if(bagType !== undefined && bag.type !== bagType) {
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continue;
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}
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if(bag.attributes[attrName] !== undefined &&
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bag.attributes[attrName].indexOf(attrValue) >= 0) {
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result.push(bag);
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}
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}
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}
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return result;
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}
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/**
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* Converts a PKCS#12 PFX in ASN.1 notation into a PFX object.
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*
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* @param obj The PKCS#12 PFX in ASN.1 notation.
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* @param {String} password Password to decrypt with (optional)
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*
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* @return PKCS#12 PFX object.
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*/
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p12.pkcs12FromAsn1 = function(obj, password) {
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// validate PFX and capture data
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var capture = {};
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var errors = [];
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if(!asn1.validate(obj, pfxValidator, capture, errors)) {
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throw {
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message: 'Cannot read PKCS#12 PFX. ' +
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'ASN.1 object is not an PKCS#12 PFX.',
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errors: errors
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};
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}
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var pfx = {
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version: capture.version.charCodeAt(0),
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safeContents: [],
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/**
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* Get bags with matching friendlyName attribute
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*
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* @param friendlyName The friendly name to search for
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* @param bagType Optional bag type to narrow search by
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* @return Array of bags with matching friendlyName attribute
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*/
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getBagsByFriendlyName: function(friendlyName, bagType) {
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return _getBagsByAttribute(pfx.safeContents, 'friendlyName',
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friendlyName, bagType);
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},
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/**
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* Get bags with matching localKeyId attribute
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*
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* @param localKeyId The localKeyId name to search for
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* @param bagType Optional bag type to narrow search by
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* @return Array of bags with matching localKeyId attribute
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*/
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getBagsByLocalKeyId: function(localKeyId, bagType) {
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return _getBagsByAttribute(pfx.safeContents, 'localKeyId',
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localKeyId, bagType);
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}
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};
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if(capture.version.charCodeAt(0) !== 3) {
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throw {
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message: 'PKCS#12 PFX of version other than 3 not supported.',
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version: capture.version.charCodeAt(0)
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};
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}
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if(asn1.derToOid(capture.contentType) !== pki.oids.data) {
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throw {
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message: 'Only PKCS#12 PFX in password integrity mode supported.',
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oid: asn1.derToOid(capture.contentType)
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};
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}
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var data = capture.content.value[0];
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if(data.tagClass !== asn1.Class.UNIVERSAL ||
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data.type !== asn1.Type.OCTETSTRING) {
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throw {
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message: 'PKCS#12 authSafe content data is not an OCTET STRING.'
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};
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}
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// check for MAC
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if(capture.mac) {
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var md = null;
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var macKeyBytes = 0;
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var macAlgorithm = asn1.derToOid(capture.macAlgorithm);
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switch(macAlgorithm) {
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case pki.oids['sha1']:
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md = forge.md.sha1.create();
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macKeyBytes = 20;
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break;
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case pki.oids['sha256']:
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md = forge.md.sha256.create();
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macKeyBytes = 32;
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break;
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case pki.oids['sha384']:
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md = forge.md.sha384.create();
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macKeyBytes = 48;
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break;
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case pki.oids['sha512']:
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md = forge.md.sha512.create();
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macKeyBytes = 64;
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break;
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case pki.oids['md5']:
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md = forge.md.md5.create();
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macKeyBytes = 16;
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break;
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}
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if(md === null) {
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throw {
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message: 'PKCS#12 uses unsupported MAC algorithm: ' + macAlgorithm
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};
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}
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// verify MAC (iterations default to 1)
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var macSalt = new forge.util.ByteBuffer(capture.macSalt);
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var macIterations = (('macIterations' in capture) ?
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parseInt(forge.util.bytesToHex(capture.macIterations), 16) : 1);
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var macKey = p12.generateKey(
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password || '', macSalt, 3, macIterations, macKeyBytes, md);
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var mac = forge.hmac.create();
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mac.start(md, macKey);
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mac.update(data.value);
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var macValue = mac.getMac();
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if(macValue.getBytes() !== capture.macDigest) {
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throw {
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message: 'PKCS#12 MAC could not be verified. Invalid password?'
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};
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}
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}
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_decodeAuthenticatedSafe(pfx, data.value, password);
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return pfx;
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};
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/**
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* Decode PKCS#12 AuthenticatedSafe (BER encoded) into PFX object.
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*
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* The AuthenticatedSafe is a BER-encoded SEQUENCE OF ContentInfo.
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*
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* @param pfx The PKCS#12 PFX object to fill.
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* @param {String} authSafe BER-encoded AuthenticatedSafe
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* @param {String} password Password to decrypt with (optional)
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* @return void
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*/
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function _decodeAuthenticatedSafe(pfx, authSafe, password) {
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authSafe = asn1.fromDer(authSafe); /* actually it's BER encoded */
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if(authSafe.tagClass !== asn1.Class.UNIVERSAL ||
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authSafe.type !== asn1.Type.SEQUENCE ||
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authSafe.constructed !== true) {
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throw {
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message: 'PKCS#12 AuthenticatedSafe expected to be a ' +
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'SEQUENCE OF ContentInfo'
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};
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}
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for(var i = 0; i < authSafe.value.length; i ++) {
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var contentInfo = authSafe.value[i];
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// validate contentInfo and capture data
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var capture = {};
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var errors = [];
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if(!asn1.validate(contentInfo, contentInfoValidator, capture, errors)) {
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throw {
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message: 'Cannot read ContentInfo.',
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errors: errors
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};
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}
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var obj = {
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encrypted: false
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};
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var safeContents = null;
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var data = capture.content.value[0];
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switch(asn1.derToOid(capture.contentType)) {
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case pki.oids.data:
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if(data.tagClass !== asn1.Class.UNIVERSAL ||
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data.type !== asn1.Type.OCTETSTRING) {
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throw {
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message: 'PKCS#12 SafeContents Data is not an OCTET STRING.'
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};
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}
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safeContents = data.value;
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break;
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case pki.oids.encryptedData:
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if(password === undefined) {
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throw {
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message: 'Found PKCS#12 Encrypted SafeContents Data but ' +
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'no password available.'
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};
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}
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safeContents = _decryptSafeContents(data, password);
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obj.encrypted = true;
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break;
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default:
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throw {
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message: 'Unsupported PKCS#12 contentType.',
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contentType: asn1.derToOid(capture.contentType)
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};
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}
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obj.safeBags = _decodeSafeContents(safeContents, password);
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pfx.safeContents.push(obj);
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}
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}
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/**
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* Decrypt PKCS#7 EncryptedData structure
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*
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* @param data ASN.1 encoded EncryptedContentInfo object
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* @param password The user-provided password
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* @return The decrypted SafeContents (ASN.1 object)
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*/
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function _decryptSafeContents(data, password) {
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var capture = {};
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var errors = [];
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if(!asn1.validate(data, forge.pkcs7.asn1.encryptedDataValidator, capture, errors)) {
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throw {
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message: 'Cannot read EncryptedContentInfo. ',
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errors: errors
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};
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}
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var oid = asn1.derToOid(capture.contentType);
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if(oid !== pki.oids.data) {
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throw {
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message: 'PKCS#12 EncryptedContentInfo ContentType is not Data.',
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oid: oid
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};
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}
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// get cipher
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oid = asn1.derToOid(capture.encAlgorithm);
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var cipher = pki.pbe.getCipher(oid, capture.encParameter, password);
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// get encrypted data
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var encrypted = forge.util.createBuffer(capture.encContent);
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cipher.update(encrypted);
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if(!cipher.finish()) {
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||
throw {
|
||
message: 'Failed to decrypt PKCS#12 SafeContents.'
|
||
};
|
||
}
|
||
|
||
return cipher.output.getBytes();
|
||
}
|
||
|
||
/**
|
||
* Decode PKCS#12 SafeContents (BER-encoded) into array of Bag objects.
|
||
*
|
||
* The safeContents is a BER-encoded SEQUENCE OF SafeBag
|
||
*
|
||
* @param {String} safeContents BER-encoded safeContents
|
||
* @param {String} password Password to decrypt with (optional)
|
||
* @return {Array} Array of Bag objects.
|
||
*/
|
||
function _decodeSafeContents(safeContents, password) {
|
||
safeContents = asn1.fromDer(safeContents); /* actually it's BER-encoded. */
|
||
|
||
if(safeContents.tagClass !== asn1.Class.UNIVERSAL ||
|
||
safeContents.type !== asn1.Type.SEQUENCE ||
|
||
safeContents.constructed !== true) {
|
||
throw {
|
||
message: 'PKCS#12 SafeContents expected to be a ' +
|
||
'SEQUENCE OF SafeBag'
|
||
};
|
||
}
|
||
|
||
var res = [];
|
||
for(var i = 0; i < safeContents.value.length; i++) {
|
||
var safeBag = safeContents.value[i];
|
||
|
||
// validate SafeBag and capture data
|
||
var capture = {};
|
||
var errors = [];
|
||
if(!asn1.validate(safeBag, safeBagValidator, capture, errors)) {
|
||
throw {
|
||
message: 'Cannot read SafeBag.',
|
||
errors: errors
|
||
};
|
||
}
|
||
|
||
/* Create bag object and push to result array. */
|
||
var bag = {
|
||
type: asn1.derToOid(capture.bagId),
|
||
attributes: _decodeBagAttributes(capture.bagAttributes)
|
||
};
|
||
res.push(bag);
|
||
|
||
var validator, decoder;
|
||
var bagAsn1 = capture.bagValue.value[0];
|
||
switch(bag.type) {
|
||
case pki.oids.pkcs8ShroudedKeyBag:
|
||
/* bagAsn1 has a EncryptedPrivateKeyInfo, which we need to decrypt.
|
||
Afterwards we can handle it like a keyBag,
|
||
which is a PrivateKeyInfo. */
|
||
if(password === undefined) {
|
||
throw {
|
||
message: 'Found PKCS#8 ShroudedKeyBag but no password available.'
|
||
};
|
||
}
|
||
|
||
bagAsn1 = pki.decryptPrivateKeyInfo(bagAsn1, password);
|
||
if(bagAsn1 === null) {
|
||
throw {
|
||
message: 'Unable to decrypt PKCS#8 ShroudedKeyBag, wrong password?'
|
||
};
|
||
}
|
||
|
||
/* fall through */
|
||
case pki.oids.keyBag:
|
||
/* A PKCS#12 keyBag is a simple PrivateKeyInfo as understood by our
|
||
PKI module, hence we don't have to do validation/capturing here,
|
||
just pass what we already got. */
|
||
bag.key = pki.privateKeyFromAsn1(bagAsn1);
|
||
continue; /* Nothing more to do. */
|
||
|
||
case pki.oids.certBag:
|
||
/* A PkCS#12 certBag can wrap both X.509 and sdsi certificates.
|
||
Therefore put the SafeBag content through another validator to
|
||
capture the fields. Afterwards check & store the results. */
|
||
validator = certBagValidator;
|
||
decoder = function() {
|
||
if(asn1.derToOid(capture.certId) !== pki.oids.x509Certificate) {
|
||
throw {
|
||
message: 'Unsupported certificate type, only X.509 supported.',
|
||
oid: asn1.derToOid(capture.certId)
|
||
};
|
||
}
|
||
|
||
bag.cert = pki.certificateFromAsn1(
|
||
asn1.fromDer(capture.cert), true);
|
||
};
|
||
break;
|
||
|
||
default:
|
||
throw {
|
||
message: 'Unsupported PKCS#12 SafeBag type.',
|
||
oid: bag.type
|
||
};
|
||
}
|
||
|
||
/* Validate SafeBag value (i.e. CertBag, etc.) and capture data if needed. */
|
||
if(validator !== undefined &&
|
||
!asn1.validate(bagAsn1, validator, capture, errors)) {
|
||
throw {
|
||
message: 'Cannot read PKCS#12 ' + validator.name,
|
||
errors: errors
|
||
};
|
||
}
|
||
|
||
/* Call decoder function from above to store the results. */
|
||
decoder();
|
||
}
|
||
|
||
return res;
|
||
}
|
||
|
||
/**
|
||
* Decode PKCS#12 SET OF PKCS12Attribute into JavaScript object
|
||
*
|
||
* @param attributes SET OF PKCS12Attribute (ASN.1 object)
|
||
* @return the decoded attributes
|
||
*/
|
||
function _decodeBagAttributes(attributes) {
|
||
var decodedAttrs = {};
|
||
|
||
if(attributes !== undefined) {
|
||
for(var i = 0; i < attributes.length; i ++) {
|
||
var capture = {};
|
||
var errors = [];
|
||
if(!asn1.validate(attributes[i], attributeValidator, capture, errors)) {
|
||
throw {
|
||
message: 'Cannot read PKCS#12 BagAttribute.',
|
||
errors: errors
|
||
};
|
||
}
|
||
|
||
var oid = asn1.derToOid(capture.oid);
|
||
if(pki.oids[oid] === undefined) {
|
||
// unsupported attribute type, ignore.
|
||
continue;
|
||
}
|
||
|
||
decodedAttrs[pki.oids[oid]] = [];
|
||
for(var j = 0; j < capture.values.length; j ++) {
|
||
decodedAttrs[pki.oids[oid]].push(capture.values[j].value);
|
||
}
|
||
}
|
||
}
|
||
|
||
return decodedAttrs;
|
||
}
|
||
|
||
/**
|
||
* Wraps a private key and certificate in a PKCS#12 PFX wrapper. If a
|
||
* password is provided then the private key will be encrypted.
|
||
*
|
||
* An entire certificate chain may also be included. To do this, pass
|
||
* an array for the "cert" parameter where the first certificate is
|
||
* the one that is paired with the private key and each subsequent one
|
||
* verifies the previous one. The certificates may be in PEM format or
|
||
* have been already parsed by Forge.
|
||
*
|
||
* @todo implement password-based-encryption for the whole package
|
||
*
|
||
* @param key the private key.
|
||
* @param cert the certificate (may be an array of certificates in order
|
||
* to specify a certificate chain).
|
||
* @param password the password to use.
|
||
* @param options:
|
||
* encAlgorithm the encryption algorithm to use
|
||
* ('aes128', 'aes192', 'aes256', '3des'), defaults to 'aes128'.
|
||
* count the iteration count to use.
|
||
* saltSize the salt size to use.
|
||
* useMac true to include a MAC, false not to, defaults to true.
|
||
* localKeyId the local key ID to use, in hex.
|
||
* generateLocalKeyId true to generate a random local key ID,
|
||
* false not to, defaults to true.
|
||
*
|
||
* @return the PKCS#12 PFX ASN.1 object.
|
||
*/
|
||
p12.toPkcs12Asn1 = function(key, cert, password, options) {
|
||
// set default options
|
||
options = options || {};
|
||
options.saltSize = options.saltSize || 8;
|
||
options.count = options.count || 2048;
|
||
options.encAlgorithm = options.encAlgorithm || 'aes128';
|
||
if(!('useMac' in options)) {
|
||
options.useMac = true;
|
||
}
|
||
if(!('localKeyId' in options)) {
|
||
options.localKeyId = null;
|
||
}
|
||
if(!('generateLocalKeyId' in options)) {
|
||
options.generateLocalKeyId = true;
|
||
}
|
||
|
||
var localKeyId = options.localKeyId;
|
||
var bagAttrs = undefined;
|
||
if(localKeyId !== null) {
|
||
localKeyId = forge.util.hexToBytes(localKeyId);
|
||
}
|
||
else if(options.generateLocalKeyId) {
|
||
// set localKeyId and friendlyName (if specified)
|
||
localKeyId = forge.random.getBytes(20);
|
||
}
|
||
|
||
if(localKeyId !== null) {
|
||
var attrs = [
|
||
// localKeyID
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
|
||
// attrId
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
|
||
asn1.oidToDer(pki.oids['localKeyId']).getBytes()),
|
||
// attrValues
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SET, true, [
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
|
||
localKeyId)
|
||
])
|
||
])
|
||
];
|
||
bagAttrs = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SET, true, attrs);
|
||
}
|
||
|
||
// collect contents for AuthenticatedSafe
|
||
var contents = [];
|
||
|
||
// create safe contents for private key
|
||
var keyBag = null;
|
||
if(key !== null) {
|
||
// SafeBag
|
||
var pkAsn1 = pki.wrapRsaPrivateKey(pki.privateKeyToAsn1(key));
|
||
if(password === null) {
|
||
// no encryption
|
||
keyBag = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
|
||
// bagId
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
|
||
asn1.oidToDer(pki.oids['keyBag']).getBytes()),
|
||
// bagValue
|
||
asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
|
||
// PrivateKeyInfo
|
||
pkAsn1
|
||
]),
|
||
// bagAttributes (OPTIONAL)
|
||
bagAttrs
|
||
]);
|
||
}
|
||
else {
|
||
// encrypted PrivateKeyInfo
|
||
keyBag = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
|
||
// bagId
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
|
||
asn1.oidToDer(pki.oids['pkcs8ShroudedKeyBag']).getBytes()),
|
||
// bagValue
|
||
asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
|
||
// EncryptedPrivateKeyInfo
|
||
pki.encryptPrivateKeyInfo(pkAsn1, password, options)
|
||
]),
|
||
// bagAttributes (OPTIONAL)
|
||
bagAttrs
|
||
]);
|
||
}
|
||
|
||
// SafeContents
|
||
var keySafeContents =
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [keyBag]);
|
||
|
||
// ContentInfo
|
||
var keyCI =
|
||
// PKCS#7 ContentInfo
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
|
||
// contentType
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
|
||
// OID for the content type is 'data'
|
||
asn1.oidToDer(pki.oids['data']).getBytes()),
|
||
// content
|
||
asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
|
||
asn1.create(
|
||
asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
|
||
asn1.toDer(keySafeContents).getBytes())
|
||
])
|
||
]);
|
||
contents.push(keyCI);
|
||
}
|
||
|
||
// create safe bag(s) for certificate chain
|
||
var chain = [];
|
||
if(cert !== null) {
|
||
if((Array.isArray && Array.isArray(cert)) || cert.constructor === Array) {
|
||
chain = cert;
|
||
}
|
||
else {
|
||
chain = [cert];
|
||
}
|
||
}
|
||
|
||
var certSafeBags = [];
|
||
for(var i = 0; i < chain.length; ++i) {
|
||
// convert cert from PEM as necessary
|
||
cert = chain[i];
|
||
if(typeof cert === 'string') {
|
||
cert = pki.certificateFromPem(cert);
|
||
}
|
||
|
||
// SafeBag
|
||
var certBagAttrs = (i === 0) ? bagAttrs : undefined;
|
||
var certAsn1 = pki.certificateToAsn1(cert);
|
||
var certSafeBag =
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
|
||
// bagId
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
|
||
asn1.oidToDer(pki.oids['certBag']).getBytes()),
|
||
// bagValue
|
||
asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
|
||
// CertBag
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
|
||
// certId
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
|
||
asn1.oidToDer(pki.oids['x509Certificate']).getBytes()),
|
||
// certValue (x509Certificate)
|
||
asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
|
||
asn1.create(
|
||
asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
|
||
asn1.toDer(certAsn1).getBytes())
|
||
])])]),
|
||
// bagAttributes (OPTIONAL)
|
||
certBagAttrs
|
||
]);
|
||
certSafeBags.push(certSafeBag);
|
||
}
|
||
|
||
if(certSafeBags.length > 0) {
|
||
// SafeContents
|
||
var certSafeContents = asn1.create(
|
||
asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, certSafeBags);
|
||
|
||
// ContentInfo
|
||
var certCI =
|
||
// PKCS#7 ContentInfo
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
|
||
// contentType
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
|
||
// OID for the content type is 'data'
|
||
asn1.oidToDer(pki.oids['data']).getBytes()),
|
||
// content
|
||
asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
|
||
asn1.create(
|
||
asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
|
||
asn1.toDer(certSafeContents).getBytes())
|
||
])
|
||
]);
|
||
contents.push(certCI);
|
||
}
|
||
|
||
// create AuthenticatedSafe by stringing together the contents
|
||
var safe = asn1.create(
|
||
asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, contents);
|
||
|
||
var macData = undefined;
|
||
if(options.useMac) {
|
||
// MacData
|
||
var sha1 = forge.md.sha1.create();
|
||
var macSalt = new forge.util.ByteBuffer(
|
||
forge.random.getBytes(options.saltSize));
|
||
var count = options.count;
|
||
// 160-bit key
|
||
var key = p12.generateKey(password || '', macSalt, 3, count, 20);
|
||
var mac = forge.hmac.create();
|
||
mac.start(sha1, key);
|
||
mac.update(asn1.toDer(safe).getBytes());
|
||
var macValue = mac.getMac();
|
||
macData = asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
|
||
// mac DigestInfo
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
|
||
// digestAlgorithm
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
|
||
// algorithm = SHA-1
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
|
||
asn1.oidToDer(pki.oids['sha1']).getBytes()),
|
||
// parameters = Null
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.NULL, false, '')
|
||
]),
|
||
// digest
|
||
asn1.create(
|
||
asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING,
|
||
false, macValue.getBytes())
|
||
]),
|
||
// macSalt OCTET STRING
|
||
asn1.create(
|
||
asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false, macSalt.getBytes()),
|
||
// iterations INTEGER (XXX: Only support count < 65536)
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
|
||
forge.util.hexToBytes(count.toString(16))
|
||
)
|
||
]);
|
||
}
|
||
|
||
// PFX
|
||
return asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
|
||
// version (3)
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.INTEGER, false,
|
||
String.fromCharCode(0x03)),
|
||
// PKCS#7 ContentInfo
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.SEQUENCE, true, [
|
||
// contentType
|
||
asn1.create(asn1.Class.UNIVERSAL, asn1.Type.OID, false,
|
||
// OID for the content type is 'data'
|
||
asn1.oidToDer(pki.oids['data']).getBytes()),
|
||
// content
|
||
asn1.create(asn1.Class.CONTEXT_SPECIFIC, 0, true, [
|
||
asn1.create(
|
||
asn1.Class.UNIVERSAL, asn1.Type.OCTETSTRING, false,
|
||
asn1.toDer(safe).getBytes())
|
||
])
|
||
]),
|
||
macData
|
||
]);
|
||
};
|
||
|
||
/**
|
||
* Derives a PKCS#12 key.
|
||
*
|
||
* @param {String} password the password to derive the key material from.
|
||
* @param {ByteBuffer} salt the salt to use.
|
||
* @param {int} id the PKCS#12 ID byte (1 = key material, 2 = IV, 3 = MAC).
|
||
* @param {int} iter the iteration count.
|
||
* @param {int} n the number of bytes to derive from the password.
|
||
* @param md the message digest to use, defaults to SHA-1.
|
||
*
|
||
* @return {ByteBuffer} The bytes derived from the password.
|
||
*/
|
||
p12.generateKey = function(password, salt, id, iter, n, md) {
|
||
var j, l;
|
||
|
||
if(typeof md === 'undefined' || md === null) {
|
||
md = forge.md.sha1.create();
|
||
}
|
||
|
||
var u = md.digestLength;
|
||
var v = md.blockLength;
|
||
var result = new forge.util.ByteBuffer();
|
||
|
||
/* Convert password to Unicode byte buffer + trailing 0-byte. */
|
||
var passBuf = new forge.util.ByteBuffer();
|
||
for(l = 0; l < password.length; l++) {
|
||
passBuf.putInt16(password.charCodeAt(l));
|
||
}
|
||
passBuf.putInt16(0);
|
||
|
||
/* Length of salt and password in BYTES. */
|
||
var p = passBuf.length();
|
||
var s = salt.length();
|
||
|
||
/* 1. Construct a string, D (the "diversifier"), by concatenating
|
||
v copies of ID. */
|
||
var D = new forge.util.ByteBuffer();
|
||
D.fillWithByte(id, v);
|
||
|
||
/* 2. Concatenate copies of the salt together to create a string S of length
|
||
v * ceil(s / v) bytes (the final copy of the salt may be trunacted
|
||
to create S).
|
||
Note that if the salt is the empty string, then so is S. */
|
||
var Slen = v * Math.ceil(s / v);
|
||
var S = new forge.util.ByteBuffer();
|
||
for(l = 0; l < Slen; l ++) {
|
||
S.putByte(salt.at(l % s));
|
||
}
|
||
|
||
/* 3. Concatenate copies of the password together to create a string P of
|
||
length v * ceil(p / v) bytes (the final copy of the password may be
|
||
truncated to create P).
|
||
Note that if the password is the empty string, then so is P. */
|
||
var Plen = v * Math.ceil(p / v);
|
||
var P = new forge.util.ByteBuffer();
|
||
for(l = 0; l < Plen; l ++) {
|
||
P.putByte(passBuf.at(l % p));
|
||
}
|
||
|
||
/* 4. Set I=S||P to be the concatenation of S and P. */
|
||
var I = S;
|
||
I.putBuffer(P);
|
||
|
||
/* 5. Set c=ceil(n / u). */
|
||
var c = Math.ceil(n / u);
|
||
|
||
/* 6. For i=1, 2, ..., c, do the following: */
|
||
for(var i = 1; i <= c; i ++) {
|
||
/* a) Set Ai=H^r(D||I). (l.e. the rth hash of D||I, H(H(H(...H(D||I)))) */
|
||
var buf = new forge.util.ByteBuffer();
|
||
buf.putBytes(D.bytes());
|
||
buf.putBytes(I.bytes());
|
||
for(var round = 0; round < iter; round ++) {
|
||
md.start();
|
||
md.update(buf.getBytes());
|
||
buf = md.digest();
|
||
}
|
||
|
||
/* b) Concatenate copies of Ai to create a string B of length v bytes (the
|
||
final copy of Ai may be truncated to create B). */
|
||
var B = new forge.util.ByteBuffer();
|
||
for(l = 0; l < v; l ++) {
|
||
B.putByte(buf.at(l % u));
|
||
}
|
||
|
||
/* c) Treating I as a concatenation I0, I1, ..., Ik-1 of v-byte blocks,
|
||
where k=ceil(s / v) + ceil(p / v), modify I by setting
|
||
Ij=(Ij+B+1) mod 2v for each j. */
|
||
var k = Math.ceil(s / v) + Math.ceil(p / v);
|
||
var Inew = new forge.util.ByteBuffer();
|
||
for(j = 0; j < k; j ++) {
|
||
var chunk = new forge.util.ByteBuffer(I.getBytes(v));
|
||
var x = 0x1ff;
|
||
for(l = B.length() - 1; l >= 0; l --) {
|
||
x = x >> 8;
|
||
x += B.at(l) + chunk.at(l);
|
||
chunk.setAt(l, x & 0xff);
|
||
}
|
||
Inew.putBuffer(chunk);
|
||
}
|
||
I = Inew;
|
||
|
||
/* Add Ai to A. */
|
||
result.putBuffer(buf);
|
||
}
|
||
|
||
result.truncate(result.length() - n);
|
||
return result;
|
||
};
|
||
|
||
} // end module implementation
|
||
|
||
/* ########## Begin module wrapper ########## */
|
||
var name = 'pkcs12';
|
||
var deps = [
|
||
'./asn1',
|
||
'./sha1',
|
||
'./pkcs7asn1',
|
||
'./pki',
|
||
'./util',
|
||
'./random',
|
||
'./hmac'
|
||
];
|
||
var nodeDefine = null;
|
||
if(typeof define !== 'function') {
|
||
// NodeJS -> AMD
|
||
if(typeof module === 'object' && module.exports) {
|
||
nodeDefine = function(ids, factory) {
|
||
factory(require, module);
|
||
};
|
||
}
|
||
// <script>
|
||
else {
|
||
if(typeof forge === 'undefined') {
|
||
forge = {};
|
||
}
|
||
initModule(forge);
|
||
}
|
||
}
|
||
// AMD
|
||
if(nodeDefine || typeof define === 'function') {
|
||
// define module AMD style
|
||
(nodeDefine || define)(['require', 'module'].concat(deps),
|
||
function(require, module) {
|
||
module.exports = function(forge) {
|
||
var mods = deps.map(function(dep) {
|
||
return require(dep);
|
||
}).concat(initModule);
|
||
// handle circular dependencies
|
||
forge = forge || {};
|
||
forge.defined = forge.defined || {};
|
||
if(forge.defined[name]) {
|
||
return forge[name];
|
||
}
|
||
forge.defined[name] = true;
|
||
for(var i = 0; i < mods.length; ++i) {
|
||
mods[i](forge);
|
||
}
|
||
return forge[name];
|
||
};
|
||
});
|
||
}
|
||
})();
|