public SignatureContext(ISignable signable)
{
this.Signable = signable;
this.ScriptHashes = signable.GetScriptHashesForVerifying();
this.redeemScripts = new byte[ScriptHashes.Length][];
this.signatures = new Dictionary<ECPoint, byte[]>[ScriptHashes.Length];
}
public byte[] Sign(ISignable signable)
{
byte[] signature;
ProtectedMemory.Unprotect(key_exported, MemoryProtectionScope.SameProcess);
using (CngKey key = CngKey.Import(key_exported, CngKeyBlobFormat.EccPrivateBlob))
using (ECDsaCng ecdsa = new ECDsaCng(key))
{
signature = ecdsa.SignHash(signable.GetHashForSigning());
}
ProtectedMemory.Protect(key_exported, MemoryProtectionScope.SameProcess);
return signature;
}
public SignatureContext(ISignable signable)
{
this.Signable = signable;
this.ScriptHashes = signable.GetScriptHashesForVerifying();
this.signatures = new MultiSigContext[ScriptHashes.Length];
}
/// <summary>
/// Returns a boolean which indicates wheather the smartcontract was correctly signed or not
/// </summary>
/// <returns>If true the smartcontract is correctly signed</returns>
public static bool VerifySignature(this ISignable obj)
{
return(obj.Hash.VerifyMessage(obj.Signature, obj.From));
}