/// <summary> /// ValidateKey method implmentation /// </summary> public override bool ValidateKey(string upn) { if (string.IsNullOrEmpty(upn)) { return(false); } string lupn = upn.ToLower(); string key = ReadKey(lupn); if (string.IsNullOrEmpty(key)) { return(false); } if (HasStorageInfos(key)) { using (var prov = new RSAEncryption(_xorsecret)) { byte[] crypted = StripStorageInfos(key); if (crypted == null) { return(false); } prov.Certificate = KeysStorage.GetUserCertificate(lupn, true); byte[] cleared = prov.Decrypt(crypted, lupn); if (cleared == null) { return(false); // Key corrupted } if (prov.CheckSum == null) { return(false); // Key corrupted } if (prov.CheckSum.SequenceEqual(CheckSumEncoding.CheckSum(lupn))) { return(true); // OK RSA } else { return(false); // Key corrupted } } } else { return(false); } }
/// <summary> /// ValidateKeyV1 method implmentation /// </summary> public override bool ValidateKey(string upn) { if (string.IsNullOrEmpty(upn)) { return(false); } string lupn = upn.ToLower(); string key = ReadKey(lupn); if (HasKeyPrefix(key)) { using (var prov = new Encryption(_xorsecret)) { string xkey = StripKeyPrefix(key); byte[] crypted = System.Convert.FromBase64CharArray(xkey.ToCharArray(), 0, xkey.Length); if (crypted == null) { return(false); } prov.Certificate = KeysStorage.GetUserCertificate(lupn, false); byte[] cleared = prov.Decrypt(crypted, lupn); if (cleared == null) { return(false); // Key corrupted } if (prov.CheckSum == null) { return(false); // Key corrupted } if (prov.CheckSum.SequenceEqual(Utilities.CheckSum(lupn))) { return(true); // OK RSA } else { return(false); // Key corrupted } } } else { return(false); } }
/// <summary> /// ValidateKey method implmentation /// </summary> public bool ValidateKey(string upn) { if (string.IsNullOrEmpty(upn)) { return(false); } string lupn = upn.ToLower(); if (!KeysStorage.HasStoredCertificate(upn)) { return(false); } string key = ReadKey(lupn); if (HasKeyPrefix(key)) { if (_cryptoRSADataProvider == null) { _cryptoRSADataProvider = new Encryption(); } key = StripKeyPrefix(key); _cryptoRSADataProvider.Certificate = KeysStorage.GetUserCertificate(lupn); string user = _cryptoRSADataProvider.Decrypt(key); if (string.IsNullOrEmpty(user)) { return(false); // Key corrupted } if (user.ToLower().Equals(lupn)) { return(true); // OK } else { return(false); // Key corrupted } } else { return(false); } }
/// <summary> /// ProbeKey method implmentation /// </summary> public override byte[] ProbeKey(string upn) { if (string.IsNullOrEmpty(upn)) { return(null); } string lupn = upn.ToLower(); string key = ReadKey(lupn); if (string.IsNullOrEmpty(key)) { return(null); } byte[] probed = null; using (var prov = new RSAEncryption(_xorsecret)) { byte[] crypted = StripStorageInfos(key); if (crypted == null) { return(null); } prov.Certificate = KeysStorage.GetUserCertificate(lupn, true); probed = prov.Decrypt(crypted, lupn); if (probed == null) { return(null); } } if (probed.Length > MAX_PROBE_LEN) { byte[] buffer = new byte[MAX_PROBE_LEN]; Buffer.BlockCopy(probed, 0, buffer, 0, MAX_PROBE_LEN); return(buffer); } else { return(probed); } }
/// <summary> /// EncodedKey method implementation /// </summary> public override string EncodedKey(string upn) { if (string.IsNullOrEmpty(upn)) { return(null); } string lupn = upn.ToLower(); string key = ReadKey(lupn); if (string.IsNullOrEmpty(key)) { return(null); } byte[] cleared = null; using (var prov = new RSAEncryption(XORSecret)) { byte[] crypted = StripStorageInfos(key); if (crypted == null) { return(null); } string pass = CheckSumEncoding.CheckSumAsString(lupn); prov.Certificate = KeysStorage.GetUserCertificate(lupn, pass); cleared = prov.GetDecryptedKey(crypted, lupn); if (cleared == null) { return(null); } } if (cleared.Length > MAX_PROBE_LEN) { byte[] buffer = new byte[MAX_PROBE_LEN]; Buffer.BlockCopy(cleared, 0, buffer, 0, MAX_PROBE_LEN); return(Base32.Encode(buffer)); } else { return(Base32.Encode(cleared)); } }