namespace System.Security.Cryptography.Pkcs { public sealed class Rfc3161TimestampRequest { public int Version { get; } public Oid HashAlgorithmId { get; } public Oid RequestedPolicyId { get; } public bool RequestSignerCertificate { get; } public bool HasExtensions { get; } public ReadOnlyMemory<byte> GetMessageHash(); public ReadOnlyMemory<byte>? GetNonce(); public X509ExtensionCollection GetExtensions(); public Rfc3161TimestampToken ProcessResponse(ReadOnlyMemory<byte> responseBytes, out int bytesConsumed); public byte[] Encode(); public bool TryEncode(Span<byte> destination, out int bytesWritten); public static Rfc3161TimestampRequest CreateFromSignerInfo(SignerInfo signerInfo, HashAlgorithmName hashAlgorithm, Oid requestedPolicyId = null, ReadOnlyMemory<byte>? nonce = default(ReadOnlyMemory<byte>?), bool requestSignerCertificates = false, X509ExtensionCollection extensions = null); public static Rfc3161TimestampRequest CreateFromData(ReadOnlySpan<byte> data, HashAlgorithmName hashAlgorithm, Oid requestedPolicyId = null, ReadOnlyMemory<byte>? nonce = default(ReadOnlyMemory<byte>?), bool requestSignerCertificates = false, X509ExtensionCollection extensions = null); public static Rfc3161TimestampRequest CreateFromHash(ReadOnlyMemory<byte> hash, HashAlgorithmName hashAlgorithm, Oid requestedPolicyId = null, ReadOnlyMemory<byte>? nonce = default(ReadOnlyMemory<byte>?), bool requestSignerCertificates = false, X509ExtensionCollection extensions = null); public static Rfc3161TimestampRequest CreateFromHash(ReadOnlyMemory<byte> hash, Oid hashAlgorithmId, Oid requestedPolicyId = null, ReadOnlyMemory<byte>? nonce = default(ReadOnlyMemory<byte>?), bool requestSignerCertificates = false, X509ExtensionCollection extensions = null); public static bool TryDecode(ReadOnlyMemory<byte> encodedBytes, out Rfc3161TimestampRequest request, out int bytesConsumed); } }