internal RsaesOaepParameters GetRsaesOaepParameters() { if (OaepHashAlgorithm == DigestAlgorithm.Sha1) { return(new RsaesOaepParameters()); } var oid = SecureMimeContext.GetDigestOid(OaepHashAlgorithm); var hashAlgorithm = new AlgorithmIdentifier(new DerObjectIdentifier(oid), DerNull.Instance); var maskGenFunction = new AlgorithmIdentifier(PkcsObjectIdentifiers.IdMgf1, hashAlgorithm); return(new RsaesOaepParameters(hashAlgorithm, maskGenFunction, RsaesOaepParameters.DefaultPSourceAlgorithm)); }
public SystemSecuritySigner(DkimSignatureAlgorithm algorithm, AsymmetricAlgorithm key) { rsa = key as RSACryptoServiceProvider; switch (algorithm) { case DkimSignatureAlgorithm.RsaSha256: oid = SecureMimeContext.GetDigestOid(DigestAlgorithm.Sha256); AlgorithmName = "RSASHA256"; hash = SHA256.Create(); break; default: oid = SecureMimeContext.GetDigestOid(DigestAlgorithm.Sha1); AlgorithmName = "RSASHA1"; hash = SHA1.Create(); break; } }