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 int Encode(Asn1BerEncodeBuffer buffer, bool explicitTagging)
{
var len = 0;
if (Ukm.Length != 8)
{
throw ExceptionUtility.CryptographicException(Resources.Asn1ConsVioException, "Ukm.Length", Ukm.Length);
}
len += Ukm.Encode(buffer, true);
if (EphemeralPublicKey != null)
{
var epkLength = EphemeralPublicKey.Encode(buffer, false);
len += epkLength;
len += buffer.EncodeTagAndLength(0x80, 0x20, EocTypeCode, epkLength);
}
len += EncryptionParamSet.Encode(buffer, true);
if (explicitTagging)
{
len += buffer.EncodeTagAndLength(Asn1Tag.Sequence, len);
}
return(len);
}
/// <summary>
/// Упаковка открытого ключа ГОСТ 34.10-2012 512 и его параметров в Asn1c структуру.
/// </summary>
///
/// <param name="pub">Открытый ключ.</param>
///
/// <returns>Asn1c структура <c>SubjectPublicKeyInfo</c> открытого
/// ключа.</returns>
private static SubjectPublicKeyInfo PackPublicKeyInfo2012_512(
Gost3410CspObject pub)
{
SubjectPublicKeyInfo spki = new SubjectPublicKeyInfo();
Asn1BerEncodeBuffer buffer = new Asn1BerEncodeBuffer();
Asn1OctetString publicKey = new Asn1OctetString(pub._publicKey);
publicKey.Encode(buffer);
byte[] octetString = buffer.MsgCopy;
spki.subjectPublicKey = new Asn1BitString(
octetString.Length * 8, octetString);
GostR3410_2012_PublicKeyParameters par =
new GostR3410_2012_PublicKeyParameters();
par.publicKeyParamSet = fromString(pub._publicKeyParamSet);
par.digestParamSet = fromString(pub._digestParamSet);
par.encryptionParamSet = CreateGost28147_89_ParamSet(
pub._encryptionParamSet);
buffer.Reset();
par.Encode(buffer);
spki.algorithm = new AlgorithmIdentifier(
fromString(GostConstants.OID_CP_GOST_R3410_12_512),
new Asn1OpenType(buffer.MsgCopy));
return(spki);
}
public override int Encode(Asn1BerEncodeBuffer buffer, bool explicitTagging)
{
int _aal = 0, len;
// encode ukm
if (!(ukm.Length == 8))
{
throw new Exception("Asn1ConsVioException (ukm.Length, ukm.Length)");
}
len = ukm.Encode(buffer, true);
_aal += len;
// encode ephemeralPublicKey
if (ephemeralPublicKey != null)
{
len = ephemeralPublicKey.Encode(buffer, false);
_aal += len;
_aal += buffer.EncodeTagAndLength(Asn1Tag.CTXT, Asn1Tag.CONS, 0, len);
}
// encode encryptionParamSet
len = encryptionParamSet.Encode(buffer, true);
_aal += len;
if (explicitTagging)
{
_aal += buffer.EncodeTagAndLength(Asn1Tag.Sequence, _aal);
}
return(_aal);
}
public override int Encode(Asn1BerEncodeBuffer buffer, bool explicitTagging)
{
int _aal = 0, len;
// encode ukm
if (ukm != null)
{
if (!(ukm.Length == 8))
{
throw new Exception("Asn1ConsVioException");
}
len = ukm.Encode(buffer, true);
_aal += len;
}
// encode encryptionParamSet
len = encryptionParamSet.Encode(buffer, true);
_aal += len;
if (explicitTagging)
{
_aal += buffer.EncodeTagAndLength(Asn1Tag.Sequence, _aal);
}
return(_aal);
}
private static SubjectPublicKeyInfo EncodePublicKey(GostKeyExchangeParameters 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 = new GostR34102001PublicKeyParameters
{
PublicKeyParamSet = Asn1ObjectIdentifier.FromOidString(transportParameters.PublicKeyParamSet),
DigestParamSet = Asn1ObjectIdentifier.FromOidString(transportParameters.DigestParamSet),
EncryptionParamSet = CreateEncryptionParamSet(transportParameters.EncryptionParamSet)
};
asnEncoder.Reset();
publicKeyParams.Encode(asnEncoder);
var publicKeyAlgOid = new Asn1ObjectIdentifier(GostR34102001Constants.IdGostR34102001);
publicKeyInfo.Algorithm = new AlgorithmIdentifier(publicKeyAlgOid, new Asn1OpenType(asnEncoder.MsgCopy));
return(publicKeyInfo);
}
public override int Encode(Asn1BerEncodeBuffer buffer, bool explicitTagging)
{
var len = 0;
if (Ukm != null)
{
if (Ukm.Length != 8)
{
throw ExceptionUtility.CryptographicException(Resources.Asn1ConsVioException, "Ukm.Length", Ukm.Length);
}
len += Ukm.Encode(buffer, true);
}
len += EncryptionParamSet.Encode(buffer, true);
if (explicitTagging)
{
len += buffer.EncodeTagAndLength(Asn1Tag.Sequence, len);
}
return(len);
}
