public RsaSignatureVerifier(RsaJwk key, SignatureAlgorithm algorithm)
: base(algorithm)
{
Debug.Assert(key != null);
Debug.Assert(key.SupportSignature(algorithm));
if (key.KeySizeInBits < 1024)
{
ThrowHelper.ThrowArgumentOutOfRangeException_SigningKeyTooSmall(key, 1024);
}
_hashAlgorithm = algorithm.HashAlgorithm;
_sha = algorithm.Sha;
_signaturePadding = RsaHelper.GetPadding(algorithm);
_hashSizeInBytes = key.KeySizeInBits >> 3;
_base64HashSizeInBytes = Base64Url.GetArraySizeRequiredToEncode(_hashSizeInBytes);
_rsaPool = new ObjectPool <RSA>(new RsaObjectPoolPolicy(key.ExportParameters()));
}
