85 lines
4.2 KiB
C#
85 lines
4.2 KiB
C#
using System.Runtime.InteropServices;
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using System.Runtime.Loader;
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namespace Ckzg;
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public class Ckzg
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{
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public const int CommitmentLength = 48;
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public const int BlobElementLength = 32;
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public const int BlobLength = BlobElementLength * 4096;
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public const int ProofLength = 48;
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static Ckzg() => AssemblyLoadContext.Default.ResolvingUnmanagedDll += (assembly, path) => NativeLibrary.Load($"runtimes/{(
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RuntimeInformation.IsOSPlatform(OSPlatform.Linux) ? "linux" :
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RuntimeInformation.IsOSPlatform(OSPlatform.OSX) ? "osx" :
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RuntimeInformation.IsOSPlatform(OSPlatform.Windows) ? "win" : "")}-{RuntimeInformation.ProcessArchitecture switch
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{
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Architecture.X64 => "x64",
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Architecture.Arm64 => "arm64",
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_ => ""
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}}/native/{path}.{(RuntimeInformation.IsOSPlatform(OSPlatform.Windows) ? "dll" : "so")}");
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/// <summary>
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/// Calculates commitment for the blob
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/// </summary>
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/// <param name="commitment">Prealocated buffer of <inheritdoc cref="CommitmentLength"/> bytes to receive the commitment</param>
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/// <param name="blob">Flatten array of blob elements</param>
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/// <param name="ts">Trusted setup settings</param>
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[DllImport("ckzg", EntryPoint = "blob_to_kzg_commitment_wrap", CallingConvention = CallingConvention.Cdecl)]
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public unsafe static extern void BlobToKzgCommitment(byte* commitment, byte* blob, IntPtr ts);
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/// <summary>
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/// Calculates aggregated proof for the blobs
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/// </summary>
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/// <param name="proof">Prealocated buffer of <inheritdoc cref="ProofLength"/> bytes to receive the proof</param>
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/// <param name="blobs">Blobs as a flatten byte array</param>
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/// <param name="count">Blobs count</param>
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/// <param name="ts">Trusted setup settings</param>
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/// <returns>Returns error code or <c>0</c> if succeed</returns>
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[DllImport("ckzg", EntryPoint = "compute_aggregate_kzg_proof_wrap", CallingConvention = CallingConvention.Cdecl)] // returns 0 on success
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public unsafe static extern int ComputeAggregatedKzgProof(byte* proof, byte* blobs, int count, IntPtr ts);
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/// <summary>
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/// Verify aggregated proof and commitments for the given blobs
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/// </summary>
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/// <param name="blobs">Blobs as a flatten byte array</param>
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/// <param name="commitments">Commitments as a flatten byte array</param>
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/// <param name="count">Blobs and commitments count</param>
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/// <param name="proof"></param>
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/// <param name="ts">Trusted setup settings</param>
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/// <returns>Returns error code or <c>0</c> if the proof is correct</returns>
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[DllImport("ckzg", EntryPoint = "verify_aggregate_kzg_proof_wrap", CallingConvention = CallingConvention.Cdecl)] // returns 0 on success
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public unsafe static extern int VerifyAggregatedKzgProof(byte* blobs, byte* commitments, int count, byte* proof, IntPtr ts);
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/// <summary>
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/// Verify the proof by point evaluation for the given commitment
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/// </summary>
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/// <param name="commitment">Commitment</param>
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/// <param name="z">Z</param>
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/// <param name="y">Y</param>
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/// <param name="proof">Proof</param>
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/// <param name="ts">Trusted setup settings</param>
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/// <returns>Returns error code or <c>0</c> if the proof is correct</returns>
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[DllImport("ckzg", EntryPoint = "verify_kzg_proof_wrap", CallingConvention = CallingConvention.Cdecl)] // returns 0 on success
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public unsafe static extern int VerifyKzgProof(byte* commitment, byte* z, byte* y, byte* proof, IntPtr ts);
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/// <summary>
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/// Load trusted setup settings from file
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/// </summary>
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/// <param name="filename">Settings file path</param>
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/// <returns>Trusted setup settings as a pointer or <c>0</c> in case of failure</returns>
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[DllImport("ckzg", EntryPoint = "load_trusted_setup_wrap")] // free result with free_trusted_setup()
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public static extern IntPtr LoadTrustedSetup(string filename);
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/// <summary>
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/// Frees memory allocated for trusted setup settings
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/// </summary>
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/// <param name="ts">Trusted setup settings</param>
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[DllImport("ckzg", EntryPoint = "free_trusted_setup_wrap", CallingConvention = CallingConvention.Cdecl)]
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public static extern void FreeTrustedSetup(IntPtr ts);
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}
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