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2023-06-21 12:46:23 -04:00
commit c70248a520
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using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Pkcs;
namespace Org.BouncyCastle.Asn1.Smime
{
public abstract class SmimeAttributes
{
public static readonly DerObjectIdentifier SmimeCapabilities = PkcsObjectIdentifiers.Pkcs9AtSmimeCapabilities;
public static readonly DerObjectIdentifier EncrypKeyPref = PkcsObjectIdentifiers.IdAAEncrypKeyPref;
}
}

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using System;
using System.Collections;
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Pkcs;
using Org.BouncyCastle.Asn1.X509;
namespace Org.BouncyCastle.Asn1.Smime
{
/**
* Handler class for dealing with S/MIME Capabilities
*/
public class SmimeCapabilities
: Asn1Encodable
{
/**
* general preferences
*/
public static readonly DerObjectIdentifier PreferSignedData = PkcsObjectIdentifiers.PreferSignedData;
public static readonly DerObjectIdentifier CannotDecryptAny = PkcsObjectIdentifiers.CannotDecryptAny;
public static readonly DerObjectIdentifier SmimeCapabilitesVersions = PkcsObjectIdentifiers.SmimeCapabilitiesVersions;
/**
* encryption algorithms preferences
*/
public static readonly DerObjectIdentifier DesCbc = new DerObjectIdentifier("1.3.14.3.2.7");
public static readonly DerObjectIdentifier DesEde3Cbc = PkcsObjectIdentifiers.DesEde3Cbc;
public static readonly DerObjectIdentifier RC2Cbc = PkcsObjectIdentifiers.RC2Cbc;
private Asn1Sequence capabilities;
/**
* return an Attr object from the given object.
*
* @param o the object we want converted.
* @exception ArgumentException if the object cannot be converted.
*/
public static SmimeCapabilities GetInstance(
object obj)
{
if (obj == null || obj is SmimeCapabilities)
{
return (SmimeCapabilities) obj;
}
if (obj is Asn1Sequence)
{
return new SmimeCapabilities((Asn1Sequence) obj);
}
if (obj is AttributeX509)
{
return new SmimeCapabilities(
(Asn1Sequence)(((AttributeX509) obj).AttrValues[0]));
}
throw new ArgumentException("unknown object in factory: " + obj.GetType().Name, "obj");
}
public SmimeCapabilities(
Asn1Sequence seq)
{
capabilities = seq;
}
/**
* returns an ArrayList with 0 or more objects of all the capabilities
* matching the passed in capability Oid. If the Oid passed is null the
* entire set is returned.
*/
public ArrayList GetCapabilities(
DerObjectIdentifier capability)
{
ArrayList list = new ArrayList();
if (capability == null)
{
foreach (object o in capabilities)
{
SmimeCapability cap = SmimeCapability.GetInstance(o);
list.Add(cap);
}
}
else
{
foreach (object o in capabilities)
{
SmimeCapability cap = SmimeCapability.GetInstance(o);
if (capability.Equals(cap.CapabilityID))
{
list.Add(cap);
}
}
}
return list;
}
/**
* Produce an object suitable for an Asn1OutputStream.
* <pre>
* SMIMECapabilities ::= Sequence OF SMIMECapability
* </pre>
*/
public override Asn1Object ToAsn1Object()
{
return capabilities;
}
}
}

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using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.X509;
namespace Org.BouncyCastle.Asn1.Smime
{
public class SmimeCapabilitiesAttribute
: AttributeX509
{
public SmimeCapabilitiesAttribute(
SmimeCapabilityVector capabilities)
: base(SmimeAttributes.SmimeCapabilities,
new DerSet(new DerSequence(capabilities.ToAsn1EncodableVector())))
{
}
}
}

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using System;
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Pkcs;
namespace Org.BouncyCastle.Asn1.Smime
{
public class SmimeCapability
: Asn1Encodable
{
/**
* general preferences
*/
public static readonly DerObjectIdentifier PreferSignedData = PkcsObjectIdentifiers.PreferSignedData;
public static readonly DerObjectIdentifier CannotDecryptAny = PkcsObjectIdentifiers.CannotDecryptAny;
public static readonly DerObjectIdentifier SmimeCapabilitiesVersions = PkcsObjectIdentifiers.SmimeCapabilitiesVersions;
/**
* encryption algorithms preferences
*/
public static readonly DerObjectIdentifier DesCbc = new DerObjectIdentifier("1.3.14.3.2.7");
public static readonly DerObjectIdentifier DesEde3Cbc = PkcsObjectIdentifiers.DesEde3Cbc;
public static readonly DerObjectIdentifier RC2Cbc = PkcsObjectIdentifiers.RC2Cbc;
private DerObjectIdentifier capabilityID;
private Asn1Object parameters;
public SmimeCapability(
Asn1Sequence seq)
{
capabilityID = (DerObjectIdentifier) seq[0].ToAsn1Object();
if (seq.Count > 1)
{
parameters = seq[1].ToAsn1Object();
}
}
public SmimeCapability(
DerObjectIdentifier capabilityID,
Asn1Encodable parameters)
{
if (capabilityID == null)
throw new ArgumentNullException("capabilityID");
this.capabilityID = capabilityID;
if (parameters != null)
{
this.parameters = parameters.ToAsn1Object();
}
}
public static SmimeCapability GetInstance(
object obj)
{
if (obj == null || obj is SmimeCapability)
{
return (SmimeCapability) obj;
}
if (obj is Asn1Sequence)
{
return new SmimeCapability((Asn1Sequence) obj);
}
throw new ArgumentException("Invalid SmimeCapability");
}
public DerObjectIdentifier CapabilityID
{
get { return capabilityID; }
}
public Asn1Object Parameters
{
get { return parameters; }
}
/**
* Produce an object suitable for an Asn1OutputStream.
* <pre>
* SMIMECapability ::= Sequence {
* capabilityID OBJECT IDENTIFIER,
* parameters ANY DEFINED BY capabilityID OPTIONAL
* }
* </pre>
*/
public override Asn1Object ToAsn1Object()
{
Asn1EncodableVector v = new Asn1EncodableVector(capabilityID);
if (parameters != null)
{
v.Add(parameters);
}
return new DerSequence(v);
}
}
}

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using Org.BouncyCastle.Asn1;
namespace Org.BouncyCastle.Asn1.Smime
{
/**
* Handler for creating a vector S/MIME Capabilities
*/
public class SmimeCapabilityVector
{
private readonly Asn1EncodableVector capabilities = new Asn1EncodableVector();
public void AddCapability(
DerObjectIdentifier capability)
{
capabilities.Add(new DerSequence(capability));
}
public void AddCapability(
DerObjectIdentifier capability,
int value)
{
capabilities.Add(new DerSequence(capability, new DerInteger(value)));
}
public void AddCapability(
DerObjectIdentifier capability,
Asn1Encodable parameters)
{
capabilities.Add(new DerSequence(capability, parameters));
}
public Asn1EncodableVector ToAsn1EncodableVector()
{
return capabilities;
}
}
}

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using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Asn1.Cms;
using Org.BouncyCastle.Asn1.X509;
namespace Org.BouncyCastle.Asn1.Smime
{
/**
* The SmimeEncryptionKeyPreference object.
* <pre>
* SmimeEncryptionKeyPreference ::= CHOICE {
* issuerAndSerialNumber [0] IssuerAndSerialNumber,
* receipentKeyId [1] RecipientKeyIdentifier,
* subjectAltKeyIdentifier [2] SubjectKeyIdentifier
* }
* </pre>
*/
public class SmimeEncryptionKeyPreferenceAttribute
: AttributeX509
{
public SmimeEncryptionKeyPreferenceAttribute(
IssuerAndSerialNumber issAndSer)
: base(SmimeAttributes.EncrypKeyPref,
new DerSet(new DerTaggedObject(false, 0, issAndSer)))
{
}
public SmimeEncryptionKeyPreferenceAttribute(
RecipientKeyIdentifier rKeyID)
: base(SmimeAttributes.EncrypKeyPref,
new DerSet(new DerTaggedObject(false, 1, rKeyID)))
{
}
/**
* @param sKeyId the subjectKeyIdentifier value (normally the X.509 one)
*/
public SmimeEncryptionKeyPreferenceAttribute(
Asn1OctetString sKeyID)
: base(SmimeAttributes.EncrypKeyPref,
new DerSet(new DerTaggedObject(false, 2, sKeyID)))
{
}
}
}