/// <summary>
/// Generate key according to password, salt and encryption type
/// </summary>
/// <param name="type">encryption type</param>
/// <param name="password">password</param>
/// <param name="salt">salt</param>
/// <returns>the generated key in bytes</returns>
public static byte[] MakeKey(EncryptionType type, string password, string salt)
{
switch (type)
{
case EncryptionType.AES128_CTS_HMAC_SHA1_96:
{
return(AesKey.MakeStringToKey(password, salt,
AesKey.DEFAULT_ITERATION_COUNT, AesKeyType.Aes128BitsKey));
}
case EncryptionType.AES256_CTS_HMAC_SHA1_96:
{
return(AesKey.MakeStringToKey(password, salt,
AesKey.DEFAULT_ITERATION_COUNT, AesKeyType.Aes256BitsKey));
}
case EncryptionType.DES_CBC_CRC:
case EncryptionType.DES_CBC_MD5:
{
return(DesKey.MakeStringToKey(password, salt));
}
case EncryptionType.RC4_HMAC:
case EncryptionType.RC4_HMAC_EXP:
{
return(Rc4Key.MakeStringToKey(password));
}
default:
throw new ArgumentException("Unsupported encryption type.");
}
}
private static byte[] RandomToKey(EncryptionType type, byte[] random)
{
switch (type)
{
case EncryptionType.AES256_CTS_HMAC_SHA1_96:
case EncryptionType.AES128_CTS_HMAC_SHA1_96:
{
return(AesKey.RandomToKey(random));
}
case EncryptionType.DES_CBC_CRC:
case EncryptionType.DES_CBC_MD5:
{
return(DesKey.DesRandomToKey(random));
}
case EncryptionType.RC4_HMAC:
{
return(Rc4Key.RandomToKey(random));
}
default:
throw new NotSupportedException("Encryption type not support");
}
}