private SubjectPublicKeyInfo EncodePublicKey(Gost_R3410_KeyExchangeParams transportParameters)
{
var asnEncoder = new Asn1BerEncodeBuffer();
var publicKey = new Asn1OctetString(transportParameters.PublicKey);
publicKey.Encode(asnEncoder);
var publicKeyValue = asnEncoder.MsgCopy;
var publicKeyInfo = new SubjectPublicKeyInfo
{
SubjectPublicKey = new Asn1BitString(publicKeyValue.Length * 8, publicKeyValue)
};
var publicKeyParams = CreatePublicKeyParams();
publicKeyParams.PublicKeyParamSet = new Asn1ObjectIdentifier(OidValue.FromString(transportParameters.PublicKeyParamSet));
publicKeyParams.DigestParamSet = new Asn1ObjectIdentifier(OidValue.FromString(transportParameters.DigestParamSet));
publicKeyParams.EncryptionParamSet = Gost_28147_89_ParamSet.FromString(transportParameters.EncryptionParamSet);
asnEncoder.Reset();
publicKeyParams.Encode(asnEncoder);
var publicKeyAlgOid = new Asn1ObjectIdentifier(KeyAlgorithm);
publicKeyInfo.Algorithm = new AlgorithmIdentifier(publicKeyAlgOid, new Asn1OpenType(asnEncoder.MsgCopy));
return(publicKeyInfo);
}
public override void Decode(Asn1BerDecodeBuffer buffer, bool explicitTagging, int implicitLength)
{
var len = explicitTagging ? MatchTag(buffer, Tag) : implicitLength;
OidValue = OidValue.FromArray(buffer.DecodeRelOidContents(len));
buffer.TypeCode = RelativeOidTypeCode;
}
public override void Decode(Asn1BerDecodeBuffer buffer, bool explicitTagging, int implicitLength)
{
var len = explicitTagging ? MatchTag(buffer, Tag) : implicitLength;
if (len <= 0)
{
throw ExceptionUtility.CryptographicException(Resources.Asn1InvalidLengthException);
}
OidValue = OidValue.FromArray(buffer.DecodeOidContents(len));
buffer.TypeCode = ObjectIdentifierTypeCode;
}
public void VerifyWriteObjectIdentifier_ConstructedIgnored(AsnEncodingRules ruleSet)
{
AsnWriter writer = new AsnWriter(ruleSet);
const string OidValue = "1.1";
Asn1Tag constructedOid = new Asn1Tag(UniversalTagNumber.ObjectIdentifier, isConstructed: true);
Asn1Tag constructedContext0 = new Asn1Tag(TagClass.ContextSpecific, 0, isConstructed: true);
writer.WriteObjectIdentifier(OidValue, constructedOid);
writer.WriteObjectIdentifier(OidValue, constructedContext0);
writer.WriteObjectIdentifier(OidValue.AsSpan(), constructedOid);
writer.WriteObjectIdentifier(OidValue.AsSpan(), constructedContext0);
Verify(writer, "060129800129060129800129");
}
public void VerifyWriteObjectIdentifier_ConstructedIgnored(PublicEncodingRules ruleSet)
{
using (AsnWriter writer = new AsnWriter((AsnEncodingRules)ruleSet))
{
const string OidValue = "1.1";
Asn1Tag constructedOid = new Asn1Tag(UniversalTagNumber.ObjectIdentifier, isConstructed: true);
Asn1Tag constructedContext0 = new Asn1Tag(TagClass.ContextSpecific, 0, isConstructed: true);
writer.WriteObjectIdentifier(constructedOid, OidValue);
writer.WriteObjectIdentifier(constructedContext0, OidValue);
writer.WriteObjectIdentifier(constructedOid, OidValue.AsSpan());
writer.WriteObjectIdentifier(constructedContext0, OidValue.AsSpan());
writer.WriteObjectIdentifier(constructedOid, new Oid(OidValue, OidValue));
writer.WriteObjectIdentifier(constructedContext0, new Oid(OidValue, OidValue));
Verify(writer, "060129800129060129800129060129800129");
}
}
/// <summary>
/// Зашифровать параметры.
/// </summary>
public byte[] EncodeParameters()
{
byte[] data;
try
{
var publicKeyParams = CreatePublicKeyParams();
publicKeyParams.DigestParamSet = new Asn1ObjectIdentifier(OidValue.FromString(DigestParamSet));
publicKeyParams.PublicKeyParamSet = new Asn1ObjectIdentifier(OidValue.FromString(PublicKeyParamSet));
publicKeyParams.EncryptionParamSet = Gost_28147_89_ParamSet.FromString(EncryptionParamSet);
var asnEncoder = new Asn1BerEncodeBuffer();
publicKeyParams.Encode(asnEncoder);
data = asnEncoder.MsgCopy;
}
catch (Exception exception)
{
throw ExceptionUtility.CryptographicException(exception, Resources.Asn1EncodeError, nameof(Gost_R3410_PublicKeyParams));
}
return(data);
}
public Asn1RelativeOid(OidValue oidValue)
: base(oidValue)
{
}
public static Gost_28147_89_ParamSet FromString(string value)
{
return((value != null) ? new Gost_28147_89_ParamSet(OidValue.FromString(value)) : null);
}
public Gost_28147_89_ParamSet(OidValue oidValue)
: base(oidValue)
{
}
public Asn1ObjectIdentifier(OidValue oidValue)
{
OidValue = oidValue;
}
public Asn1ObjectIdentifier()
{
OidValue = null;
}
