/**
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* Javascript implementation of ASN.1 validators for PKCS#7 v1.5.
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*
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* @author Dave Longley
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* @author Stefan Siegl
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*
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* Copyright (c) 2012-2015 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#7 is as follows
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* (see RFC #2315 for details, http://www.ietf.org/rfc/rfc2315.txt):
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*
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* A PKCS#7 message consists of a ContentInfo on root level, which may
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* contain any number of further ContentInfo nested into it.
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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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* EnvelopedData ::= SEQUENCE {
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* version Version,
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* recipientInfos RecipientInfos,
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* encryptedContentInfo EncryptedContentInfo
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* }
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*
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* EncryptedData ::= SEQUENCE {
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* version Version,
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* encryptedContentInfo EncryptedContentInfo
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* }
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*
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* id-signedData OBJECT IDENTIFIER ::= { iso(1) member-body(2)
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* us(840) rsadsi(113549) pkcs(1) pkcs7(7) 2 }
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*
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* SignedData ::= SEQUENCE {
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* version INTEGER,
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* digestAlgorithms DigestAlgorithmIdentifiers,
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* contentInfo ContentInfo,
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* certificates [0] IMPLICIT Certificates OPTIONAL,
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* crls [1] IMPLICIT CertificateRevocationLists OPTIONAL,
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* signerInfos SignerInfos
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* }
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*
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* SignerInfos ::= SET OF SignerInfo
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*
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* SignerInfo ::= SEQUENCE {
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* version Version,
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* issuerAndSerialNumber IssuerAndSerialNumber,
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* digestAlgorithm DigestAlgorithmIdentifier,
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* authenticatedAttributes [0] IMPLICIT Attributes OPTIONAL,
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* digestEncryptionAlgorithm DigestEncryptionAlgorithmIdentifier,
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* encryptedDigest EncryptedDigest,
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* unauthenticatedAttributes [1] IMPLICIT Attributes OPTIONAL
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* }
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*
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* EncryptedDigest ::= OCTET STRING
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*
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* Attributes ::= SET OF Attribute
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*
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* Attribute ::= SEQUENCE {
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* attrType OBJECT IDENTIFIER,
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* attrValues SET OF AttributeValue
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* }
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*
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* AttributeValue ::= ANY
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*
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* Version ::= INTEGER
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*
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* RecipientInfos ::= SET OF RecipientInfo
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*
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* EncryptedContentInfo ::= SEQUENCE {
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* contentType ContentType,
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* contentEncryptionAlgorithm ContentEncryptionAlgorithmIdentifier,
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* encryptedContent [0] IMPLICIT EncryptedContent OPTIONAL
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* }
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*
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* ContentEncryptionAlgorithmIdentifier ::= 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 AES and DES3, there is only one,
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* the IV.
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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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* EncryptedContent ::= OCTET STRING
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*
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* RecipientInfo ::= SEQUENCE {
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* version Version,
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* issuerAndSerialNumber IssuerAndSerialNumber,
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* keyEncryptionAlgorithm KeyEncryptionAlgorithmIdentifier,
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* encryptedKey EncryptedKey
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* }
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*
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* IssuerAndSerialNumber ::= SEQUENCE {
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* issuer Name,
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* serialNumber CertificateSerialNumber
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* }
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*
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* CertificateSerialNumber ::= INTEGER
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*
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* KeyEncryptionAlgorithmIdentifier ::= AlgorithmIdentifier
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*
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* EncryptedKey ::= OCTET STRING
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*/
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var forge = require('./forge');
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require('./asn1');
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require('./util');
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// shortcut for ASN.1 API
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var asn1 = forge.asn1;
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// shortcut for PKCS#7 API
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var p7v = module.exports = forge.pkcs7asn1 = forge.pkcs7asn1 || {};
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forge.pkcs7 = forge.pkcs7 || {};
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forge.pkcs7.asn1 = p7v;
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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,
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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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type: 0,
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constructed: true,
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optional: true,
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captureAsn1: 'content'
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}]
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};
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p7v.contentInfoValidator = contentInfoValidator;
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var encryptedContentInfoValidator = {
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name: 'EncryptedContentInfo',
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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: 'EncryptedContentInfo.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: 'EncryptedContentInfo.contentEncryptionAlgorithm',
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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: 'EncryptedContentInfo.contentEncryptionAlgorithm.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: 'encAlgorithm'
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}, {
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name: 'EncryptedContentInfo.contentEncryptionAlgorithm.parameter',
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tagClass: asn1.Class.UNIVERSAL,
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captureAsn1: 'encParameter'
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}]
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}, {
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name: 'EncryptedContentInfo.encryptedContent',
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tagClass: asn1.Class.CONTEXT_SPECIFIC,
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type: 0,
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/* The PKCS#7 structure output by OpenSSL somewhat differs from what
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* other implementations do generate.
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*
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* OpenSSL generates a structure like this:
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* SEQUENCE {
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* ...
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* [0]
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* 26 DA 67 D2 17 9C 45 3C B1 2A A8 59 2F 29 33 38
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* C3 C3 DF 86 71 74 7A 19 9F 40 D0 29 BE 85 90 45
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* ...
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* }
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*
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* Whereas other implementations (and this PKCS#7 module) generate:
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* SEQUENCE {
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* ...
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* [0] {
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* OCTET STRING
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* 26 DA 67 D2 17 9C 45 3C B1 2A A8 59 2F 29 33 38
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* C3 C3 DF 86 71 74 7A 19 9F 40 D0 29 BE 85 90 45
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* ...
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* }
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* }
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*
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* In order to support both, we just capture the context specific
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* field here. The OCTET STRING bit is removed below.
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*/
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capture: 'encryptedContent',
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captureAsn1: 'encryptedContentAsn1'
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}]
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};
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p7v.envelopedDataValidator = {
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name: 'EnvelopedData',
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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: 'EnvelopedData.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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name: 'EnvelopedData.RecipientInfos',
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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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captureAsn1: 'recipientInfos'
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}].concat(encryptedContentInfoValidator)
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};
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p7v.encryptedDataValidator = {
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name: 'EncryptedData',
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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: 'EncryptedData.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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}].concat(encryptedContentInfoValidator)
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};
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var signerValidator = {
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name: 'SignerInfo',
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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: 'SignerInfo.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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}, {
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name: 'SignerInfo.issuerAndSerialNumber',
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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: 'SignerInfo.issuerAndSerialNumber.issuer',
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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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captureAsn1: 'issuer'
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}, {
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name: 'SignerInfo.issuerAndSerialNumber.serialNumber',
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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: 'serial'
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}]
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}, {
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name: 'SignerInfo.digestAlgorithm',
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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: 'SignerInfo.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: 'digestAlgorithm'
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}, {
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name: 'SignerInfo.digestAlgorithm.parameter',
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tagClass: asn1.Class.UNIVERSAL,
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constructed: false,
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captureAsn1: 'digestParameter',
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optional: true
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}]
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}, {
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name: 'SignerInfo.authenticatedAttributes',
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tagClass: asn1.Class.CONTEXT_SPECIFIC,
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type: 0,
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constructed: true,
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optional: true,
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capture: 'authenticatedAttributes'
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}, {
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name: 'SignerInfo.digestEncryptionAlgorithm',
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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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capture: 'signatureAlgorithm'
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}, {
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name: 'SignerInfo.encryptedDigest',
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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: 'signature'
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}, {
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name: 'SignerInfo.unauthenticatedAttributes',
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tagClass: asn1.Class.CONTEXT_SPECIFIC,
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type: 1,
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constructed: true,
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optional: true,
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capture: 'unauthenticatedAttributes'
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}]
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};
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p7v.signedDataValidator = {
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name: 'SignedData',
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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: 'SignedData.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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name: 'SignedData.DigestAlgorithms',
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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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captureAsn1: 'digestAlgorithms'
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},
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contentInfoValidator,
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{
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name: 'SignedData.Certificates',
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tagClass: asn1.Class.CONTEXT_SPECIFIC,
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type: 0,
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optional: true,
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captureAsn1: 'certificates'
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}, {
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name: 'SignedData.CertificateRevocationLists',
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tagClass: asn1.Class.CONTEXT_SPECIFIC,
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type: 1,
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optional: true,
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captureAsn1: 'crls'
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}, {
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name: 'SignedData.SignerInfos',
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tagClass: asn1.Class.UNIVERSAL,
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type: asn1.Type.SET,
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capture: 'signerInfos',
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optional: true,
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value: [signerValidator]
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}]
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};
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p7v.recipientInfoValidator = {
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name: 'RecipientInfo',
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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: 'RecipientInfo.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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name: 'RecipientInfo.issuerAndSerial',
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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: 'RecipientInfo.issuerAndSerial.issuer',
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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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captureAsn1: 'issuer'
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}, {
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name: 'RecipientInfo.issuerAndSerial.serialNumber',
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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: 'serial'
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}]
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}, {
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name: 'RecipientInfo.keyEncryptionAlgorithm',
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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: 'RecipientInfo.keyEncryptionAlgorithm.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: 'encAlgorithm'
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}, {
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name: 'RecipientInfo.keyEncryptionAlgorithm.parameter',
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tagClass: asn1.Class.UNIVERSAL,
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constructed: false,
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captureAsn1: 'encParameter'
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}]
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}, {
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name: 'RecipientInfo.encryptedKey',
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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: 'encKey'
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}]
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};
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