User's Manual

PIN Pad 791 Programmer’s Manual (PCI POS-A) UDN PM0103-U Rev. 06
Appendix A – Key management 2015-04-20
Page325
Uniform Industrial Corp. Proprietary and Confidential Total 342 pages
7. TDES – ECB Encryption:
8. TDES – CBC Encryption:
9. DES-MAC (ISO 9797-1 method 1)
D1 D2
TDES-E TDES-E
K K
…
DN
TDES-E
K
C1 C2 CN
D1 D2
TDES-E TDES-E
K K
…
DN
TDES-E
K
C1 C2 CN
IV
…
CN-1
D1 D2
DES-E DES-E
K K
…
DN
DES-E
K
C1 C2 CN
IV
…
CN-1
MAC