structs.go

Documentation: github.com/sassoftware/relic/lib/pkcs7

     1  //
     2  // Copyright (c) SAS Institute Inc.
     3  //
     4  // Licensed under the Apache License, Version 2.0 (the "License");
     5  // you may not use this file except in compliance with the License.
     6  // You may obtain a copy of the License at
     7  //
     8  //     http://www.apache.org/licenses/LICENSE-2.0
     9  //
    10  // Unless required by applicable law or agreed to in writing, software
    11  // distributed under the License is distributed on an "AS IS" BASIS,
    12  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13  // See the License for the specific language governing permissions and
    14  // limitations under the License.
    15  //
    16  
    17  // PKCS#7 is a specification for signing or encrypting data using ASN.1
    18  // structures. It is also known as CMS (cryptographic message syntax) and is
    19  // discussed in RFC 2315, RFC 3369, RFC 3852, and RFC 5652.
    20  //
    21  // This package implements signature operations needed for creating and
    22  // validating signature technologies based on PKCS#7 including Java and
    23  // Microsoft Authenticode
    24  package pkcs7
    25  
    26  import (
    27  	"crypto/x509/pkix"
    28  	"encoding/asn1"
    29  	"math/big"
    30  )
    31  
    32  var (
    33  	OidData                   = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 7, 1}
    34  	OidSignedData             = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 7, 2}
    35  	OidAttributeContentType   = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 9, 3}
    36  	OidAttributeMessageDigest = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 9, 4}
    37  	OidAttributeSigningTime   = asn1.ObjectIdentifier{1, 2, 840, 113549, 1, 9, 5}
    38  )
    39  
    40  const MimeType = "application/pkcs7-mime"
    41  
    42  type ContentInfo struct {
    43  	Raw         asn1.RawContent
    44  	ContentType asn1.ObjectIdentifier
    45  }
    46  
    47  type ContentInfoSignedData struct {
    48  	ContentType asn1.ObjectIdentifier
    49  	Content     SignedData `asn1:"explicit,optional,tag:0"`
    50  }
    51  
    52  type SignedData struct {
    53  	Version                    int                        `asn1:"default:1"`
    54  	DigestAlgorithmIdentifiers []pkix.AlgorithmIdentifier `asn1:"set"`
    55  	ContentInfo                ContentInfo                ``
    56  	Certificates               RawCertificates            `asn1:"optional,tag:0"`
    57  	CRLs                       []pkix.CertificateList     `asn1:"optional,tag:1"`
    58  	SignerInfos                []SignerInfo               `asn1:"set"`
    59  }
    60  
    61  type RawCertificates struct {
    62  	Raw asn1.RawContent
    63  }
    64  
    65  type Attribute struct {
    66  	Type   asn1.ObjectIdentifier
    67  	Values asn1.RawValue
    68  }
    69  
    70  type AttributeList []Attribute
    71  
    72  type SignerInfo struct {
    73  	Version                   int                      `asn1:"default:1"`
    74  	IssuerAndSerialNumber     IssuerAndSerial          ``
    75  	DigestAlgorithm           pkix.AlgorithmIdentifier ``
    76  	AuthenticatedAttributes   AttributeList            `asn1:"optional,tag:0"`
    77  	DigestEncryptionAlgorithm pkix.AlgorithmIdentifier ``
    78  	EncryptedDigest           []byte                   ``
    79  	UnauthenticatedAttributes AttributeList            `asn1:"optional,tag:1"`
    80  }
    81  
    82  type IssuerAndSerial struct {
    83  	IssuerName   asn1.RawValue
    84  	SerialNumber *big.Int
    85  }
    86
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