CHANGE KEY(KeyNo)

[Iñigo Olaso]

Hi,

Im tryng to change the key of picc level for DES to AES but I cant the card alwasy response me with 0x1E. Can you give me more information about the secuencial steps to follow in this case.

Thanks.

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[Iñigo Olaso]

writing my log below.

Current DES key: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00.

New AES key: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00.

Session key: 0xa4, 0x42, 0xe3, 0x48, 0x00, 0x00, 0x00, 0x00.

CRC16 :0x5B1B
the CRC16 is calculated over: 0xC4, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01.

finally (before encrypted to send): 0xC4, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x1B, 0x5B, 0x00, 0x00, 0x00, 0x00, 0x00.

finally (encrypted to send): 0xC4, 0x80, 0x36, 0xD3, 0x90, 0xB6, 0xA3, 0xD8, 0x5C, 0x17, 0x61, 0x39, 0x89, 0x89, 0x8e, 0xbf, 0x0C, 0x19, 0x6A, 0x58, 0x6A, 0xF3, 0xB6, 0x2A, 0xE9, 0xF9.

thanks and regards.

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[Iñigo Olaso]

Forgive but I have been wrong with some dates, so I rewrite a new log:

Current DES key: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00.

New AES key: 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00.

Session key: 0x00, 0x00, 0x00, 0x00, 0x74, 0x92, 0xaf, 0xb0.

CRC16 :0x1B, 0x5B.
the CRC16 is calculated over: 0xC4, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01.

finally (before encrypted to send): 0xC4, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x1B, 0x5B, 0x00, 0x00, 0x00, 0x00, 0x00.

finally (encrypted to send): 0xC4, 0x80, 0x39, 0x2A, 0xE1, 0xF2, 0x27, 0xB9, 0xD8, 0xA8, 0x58, 0x24, 0x79, 0x63, 0x49, 0x66, 0xB4, 0x1B, 0x1B, 0x1F, 0x1E, 0x64, 0xEB, 0x8F, 0x7F, 0xB6.

thanks and regards.

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