MagTek MagneSafe V5 - Manual (Page 121)

Appendix D. Command Examples
113
As Track 1 Encrypted Data Length cites 64 bytes only, we can eliminate
the trailing blocks:
Block # 1 C25C1D1197D31CAA
2 87285D59A8920474
3 26D9182EC11353C0
4 51ADD6D0F072A6CB
5 3436560B3071FC1F
6 D11D9F7E74886742
7 D9BEE0CFD1EA1064
8 C213BB55278B2F12
Appendix C tells us to decrypt the last block:
C213BB55278B2F12 TDES Dec with 27F66D5244FF621E AA6F6120EDEB427F
gets E98ED0F0D1EA1064
XOR D9BEE0CFD1EA1064
gets 3030303F00000000 (decrypted last block)
Continue on in reverse block order:
D9BEE0CFD1EA1064 TDES Dec with 27F66D5244FF621E AA6F6120EDEB427F
gets E12DA84C41B85772
XOR D11D9F7E74886742
gets 3030373235303030 (decrypted block 7)
Continue on in reverse block order:
D11D9F7E74886742 TDES Dec with 27F66D5244FF621E AA6F6120EDEB427F
gets 0704673B0041CC2F
XOR 3436560B3071FC1F
gets 3332313030303030 (decrypted block 6)
Continue on in reverse block order:
3436560B3071FC1F TDES Dec with 27F66D5244FF621E AA6F6120EDEB427F
gets 718DF68EC04A96FF
XOR 51ADD6D0F072A6CB
gets 2020205E30383034 (decrypted block 5)
Continue on in reverse block order:
51ADD6D0F072A6CB TDES Dec with 27F66D5244FF621E AA6F6120EDEB427F
gets 0989597B8D3373E0
XOR 26D9182EC11353C0
gets 2F5041554C202020 (decrypted block 4)
Continue on in reverse block order:
26D9182EC11353C0 TDES Dec with 27F66D5244FF621E AA6F6120EDEB427F
gets BF110311E7D5453A
XOR 87285D59A8920474
gets 38395E484F47414E (decrypted block 3)
Continue on in reverse block order:
87285D59A8920474 TDES Dec with 27F66D5244FF621E AA6F6120EDEB427F
gets F2692820A5E12B9B
XOR C25C1D1197D31CAA
gets 3035353132323731 (decrypted block 2)
Continue on in reverse block order:
C25C1D1197D31CAA TDES Dec with 27F66D5244FF621E AA6F6120EDEB427F
gets 2542353435323330 (decrypted block 1)