/// <summary>
/// Gets the signature.
/// </summary>
/// <param name="key">The key data bytes.</param>
/// <returns></returns>
public override byte[] GetSignature(IEnumerable<byte> key)
{
var signature = new RSADigitalSignature(new RSAPrivateKey(this._exponent, this._modulus, this._dValue, this._dpValue, this._qValue, this._dqValue, this._pValue, this._inverseQ));
return new SignatureKeyData
{
AlgorithmName = this.Name,
Signature = signature.CreateSignature(key.ToArray()),
}.GetBytes().ToArray();
}
/// <summary>
/// Verifies the signature.
/// </summary>
/// <param name="hash">The hash.</param>
/// <param name="signature">The signature.</param>
/// <returns>
/// true if signature verified; otherwise false.
/// </returns>
public override bool VerifySignature(IEnumerable<byte> hash, IEnumerable<byte> signature)
{
long i = 0;
long j = 0;
byte[] tmp;
var sig = signature.ToArray();
if (sig[0] == 0 && sig[1] == 0 && sig[2] == 0)
{
long i1 = (sig[i++] << 24) & 0xff000000;
long i2 = (sig[i++] << 16) & 0x00ff0000;
long i3 = (sig[i++] << 8) & 0x0000ff00;
long i4 = (sig[i++]) & 0x000000ff;
j = i1 | i2 | i3 | i4;
i += j;
i1 = (sig[i++] << 24) & 0xff000000;
i2 = (sig[i++] << 16) & 0x00ff0000;
i3 = (sig[i++] << 8) & 0x0000ff00;
i4 = (sig[i++]) & 0x000000ff;
j = i1 | i2 | i3 | i4;
tmp = new byte[j];
Array.Copy(sig, (int)i, tmp, 0, (int)j);
sig = tmp;
}
var sig1 = new RSADigitalSignature(new RSAPublicKey(this._exponent, this._modulus));
return sig1.VerifySignature(hash.ToArray(), sig);
}
