ReadDsaPublicKey()

static void System.Security.Cryptography.DSAKeyFormatHelper.ReadDsaPublicKey ( ReadOnlyMemory< byte > yBytes, in AlgorithmIdentifierAsn algId, out DSAParameters ret )

inlinestaticpackage

Definition at line 44 of file DSAKeyFormatHelper.cs.

    {
        BigInteger value;
        try
        {
            value = AsnDecoder.ReadInteger(yBytes.Span, AsnEncodingRules.DER, out var bytesConsumed);
            if (bytesConsumed != yBytes.Length)
            {
                throw new CryptographicException(System.SR.Cryptography_Der_Invalid_Encoding);
            }
        }
        catch (AsnContentException inner)
        {
            throw new CryptographicException(System.SR.Cryptography_Der_Invalid_Encoding, inner);
        }
        if (!algId.Parameters.HasValue)
        {
            throw new CryptographicException(System.SR.Cryptography_Der_Invalid_Encoding);
        }
        DssParms dssParms = DssParms.Decode(algId.Parameters.Value, AsnEncodingRules.BER);
        ret = new DSAParameters
        {
            P = dssParms.P.ToByteArray(isUnsigned: true, isBigEndian: true),
            Q = dssParms.Q.ToByteArray(isUnsigned: true, isBigEndian: true)
        };
        ret.G = dssParms.G.ExportKeyParameter(ret.P.Length);
        ret.Y = value.ExportKeyParameter(ret.P.Length);
    }

References System.SR.Cryptography_Der_Invalid_Encoding, System.Security.Cryptography.Asn1.DssParms.Decode(), System.Security.Cryptography.Asn1.DssParms.G, System.ReadOnlyMemory< T >.Length, System.P, System.Security.Cryptography.Asn1.DssParms.P, System.Q, System.Security.Cryptography.Asn1.DssParms.Q, System.Formats.Asn1.AsnDecoder.ReadInteger(), System.ReadOnlyMemory< T >.Span, System.Numerics.BigInteger.ToByteArray(), and System.value.

Referenced by System.Security.Cryptography.DSAKeyFormatHelper.ReadSubjectPublicKeyInfo().