Mitsubishi Motors DS5000TK - Manual (Page 74)

USER’S GUIDE
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DS5000 SOFTWARE ENCRYPTION BLOCK DIAGRAM Figure 9–1
PROGRAM
COUNTER
DATA
POINTER
ADDRESS
ENCRYPTOR
EXTERNAL
BYTEWIDE
RAM
40–BIT ENCRYPTION KEY
DATA
ENCRYPTOR
SECURITY
LOCK
BOOTSTRAP
LOADER
SECURE INTERNAL DATA BUS
SECURE INTERNAL ADDRESS BUS
ENCRYPTED BYTEWIDE
DATA BUS
8
ENCRYPTED BYTEWIDE
DATA BUS
15
DS5002 SOFTWARE ENCRYPTION BLOCK DIAGRAM Figure 9–2
PROGRAM
COUNTER
DATA
POINTER
ADDRESS
ENCRYPTOR
EXTERNAL
BYTEWIDE
RAM
64–BIT ENCRYPTION KEY
DATA
ENCRYPTOR
SECURITY
LOCK
BOOTSTRAP
LOADER
SECURE INTERNAL DATA BUS
SECURE INTERNAL ADDRESS BUS
ENCRYPTED BYTEWIDE
DATA BUS
8
ENCRYPTED BYTEWIDE
DATA BUS
16
RANDOM
NUMBER
GENERATOR
SDI