diff options
Diffstat (limited to 'back-end/libs/NVault.Crypto.Secp256k1/src/Secp256HashFuncState.cs')
| -rw-r--r-- | back-end/libs/NVault.Crypto.Secp256k1/src/Secp256HashFuncState.cs | 56 |
1 files changed, 56 insertions, 0 deletions
diff --git a/back-end/libs/NVault.Crypto.Secp256k1/src/Secp256HashFuncState.cs b/back-end/libs/NVault.Crypto.Secp256k1/src/Secp256HashFuncState.cs new file mode 100644 index 0000000..4ee745c --- /dev/null +++ b/back-end/libs/NVault.Crypto.Secp256k1/src/Secp256HashFuncState.cs @@ -0,0 +1,56 @@ +// Copyright (C) 2023 Vaughn Nugent +// +// This program is free software: you can redistribute it and/or modify +// it under the terms of the GNU Affero General Public License as +// published by the Free Software Foundation, either version 3 of the +// License, or (at your option) any later version. +// +// This program is distributed in the hope that it will be useful, +// but WITHOUT ANY WARRANTY; without even the implied warranty of +// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +// GNU Affero General Public License for more details. +// +// You should have received a copy of the GNU Affero General Public License +// along with this program. If not, see <https://www.gnu.org/licenses/>. + +using System; +using System.Runtime.InteropServices; + +namespace NVault.Crypto.Secp256k1 +{ + [StructLayout(LayoutKind.Sequential)] + public unsafe readonly ref struct Secp256HashFuncState + { + + /// <summary> + /// The opaque pointer passed to the hash function + /// </summary> + public readonly IntPtr Opaque { get; } + + private readonly byte* _output; + private readonly byte* _xCoord; + private readonly int _outputLength; + private readonly int _xCoordLength; + + internal Secp256HashFuncState(byte* output, int outputLength, byte* xCoord, int xCoordLength, IntPtr opaque) + { + Opaque = opaque; + _output = output; + _outputLength = outputLength; + _xCoord = xCoord; + _xCoordLength = xCoordLength; + } + + /// <summary> + /// Gets the output buffer as a span + /// </summary> + /// <returns>The output buffer span</returns> + public readonly Span<byte> GetOutput() => new(_output, _outputLength); + + /// <summary> + /// Gets the x coordinate argument as a span + /// </summary> + /// <returns>The xcoordinate buffer span</returns> + public readonly ReadOnlySpan<byte> GetXCoordArg() => new(_xCoord, _xCoordLength); + } +}
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