TMK [0]

Encrypted TPK [0]

Clear TPK [0]

TR-31(ver B) [0]

TR-31 Header [0]

TR-31 PadData [0]

Encode

Decode

PAN [0]

PIN [0]

PINBLOCK [0]

format 4 padding [0]

Encrypt (Format 0)

Decrypt (Format 0)

Encrypt (Format 4)

Decrypt (Format 4)