Expand description
PUT KEY (CLA 84, INS D8) — PDD §5.3.1, GPCS v2.3.1 §11.8.
P1 = KVN when replacing, 0x00 when adding (KVN inside data). P2 = 0x81
(multi-key bit + first KID 0x01). Data = new_kvn | key_block{ENC,MAC,DEK},
each block key_type | len | encrypted_key | kcv_len | kcv. Card echoes
new_kvn | KCV_ENC | KCV_MAC | KCV_DEK.
Structs§
- KeyBlock
- One encrypted key block plus its KCV (built from backend output). The
encrypted key already borrows (
&[u8]) — no alloc here.
Functions§
- put_key
- Build the PUT KEY C-APDU plaintext for a 3-key set.