private static byte[] DecipherContent(string wrappedReceiptKey, string content, AsymmetricCipherKeyPair keyPair)
{
byte[] unwrappedKey = UnwrapKey(wrappedReceiptKey, keyPair);
byte[] contentBytes = Conversion.Base64ToBytes(content);
EncryptedData encryptedData = EncryptedData.Parser.ParseFrom(contentBytes);
byte[] iv = encryptedData.Iv.ToByteArray();
byte[] cipherText = encryptedData.CipherText.ToByteArray();
byte[] decipheredBytes = DecipherAes(unwrappedKey, iv, cipherText);
return(decipheredBytes);
}
public static AttributeList DecryptCurrentUserReceipt(string wrappedReceiptKey, string otherPartyProfile, AsymmetricCipherKeyPair keyPair)
{
byte[] unwrappedKey = UnwrapKey(wrappedReceiptKey, keyPair);
byte[] otherPartyProfileContentBytes = Conversion.Base64ToBytes(otherPartyProfile);
EncryptedData encryptedData = EncryptedData.Parser.ParseFrom(otherPartyProfileContentBytes);
byte[] iv = encryptedData.Iv.ToByteArray();
byte[] cipherText = encryptedData.CipherText.ToByteArray();
byte[] decipheredBytes = DecipherAes(unwrappedKey, iv, cipherText);
return(AttributeList.Parser.ParseFrom(decipheredBytes));
}
private AttributeList DecryptCurrentUserReceipt(ReceiptDO receipt, AsymmetricCipherKeyPair keyPair)
{
byte[] unwrappedKey = UnwrapKey(receipt.wrapped_receipt_key, keyPair);
byte[] otherPartyProfileContentBytes = Conversion.Base64ToBytes(receipt.other_party_profile_content);
EncryptedData encryptedData = EncryptedData.Parser.ParseFrom(otherPartyProfileContentBytes);
byte[] iv = encryptedData.Iv.ToByteArray();
byte[] cipherText = encryptedData.CipherText.ToByteArray();
byte[] decipheredBytes = CryptoEngine.DecipherAes(unwrappedKey, iv, cipherText);
return(AttributeList.Parser.ParseFrom(decipheredBytes));
}
public YotiAttributeValue(TypeEnum type, string data)
{
_type = type;
switch (_type)
{
case TypeEnum.Jpeg:
case TypeEnum.Png:
_data = Conversion.Base64ToBytes(data);
break;
default:
_data = Conversion.UtfToBytes(data);
break;
}
}
internal static byte[] UnwrapKey(string wrappedKey, AsymmetricCipherKeyPair keyPair)
{
byte[] cipherBytes = Conversion.Base64ToBytes(wrappedKey);
return(DecryptRsa(cipherBytes, keyPair));
}
private byte[] UnwrapKey(string wrappedKey, AsymmetricCipherKeyPair keyPair)
{
byte[] cipherBytes = Conversion.Base64ToBytes(wrappedKey);
return(CryptoEngine.DecryptRsa(cipherBytes, keyPair));
}
