KDF algorithm to use for computing telegram passport hash
| Constructor | Description | 
|---|---|
| securePasswordKdfAlgoUnknown | Unknown KDF algo (most likely the client has to be updated) | 
| securePasswordKdfAlgoPBKDF2HMACSHA512iter100000 | PBKDF2 with SHA512 and 100000 iterations KDF algo | 
| securePasswordKdfAlgoSHA512 | SHA512 KDF algo |