Input Key

BDK (Base Derivation Key)

Initial Key (IPEK equivalent)

BDK

[ ][ ---- ]

Key Type

Initial Key ID (IKI, 16 hex = 8 bytes)

[ ]

Transaction Counter (8 hex = 4 bytes)

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Working Key Usage

Working Key Type

Working Key (result)

[ ][ ---- ]

Working Key (PIN, derive with usage = PIN Encryption)

[ ][ ---- ]

PIN Block (32 hex / 16 bytes — ISO Format 4)

[ ]

Output PIN Block

[ ]

Working Key (MAC, derive with usage = MAC Both Ways or Generation)

[ ][ ---- ]

Data

[ ]

Input Data Format

Base64

Hexadecimal

Ascii

MAC Result (AES-CMAC, RFC 4493)

[ ]

Working Key (Data, derive with usage = Data Encrypt/Decrypt/Both Ways)

[ ][ ---- ]

Input Data Format

Base64

Hexadecimal

Ascii

Output Data Format

Base64

Hexadecimal

Ascii

Input Data (AES-CBC, zero IV, zero padding)

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Output Data

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