I am trying to decrypt a sample file using mcrypt, encryption/decryption is confirmed to be working with Gringotts.
Gringotts used algorithms:
Encryption: Serpent
Block size: 128 bits
Key length: 256 bits
Hashing: RIPEMD 160
Compression: Zlib Best
Used mcrypt command:
mcrypt -V -s 256 -z -a serpent -h ripemd160 -d sample.grg
With the error message:
The specified key size is too large for this algorithm.
I'm not sure what I am missing, any suggestions?