Mitsubishi DS907x SIP User Manual page 74

USER'S GUIDE
DS5000 SOFTWARE ENCRYPTION BLOCK DIAGRAM Figure 9–1
PROGRAM
COUNTER
SECURE INTERNAL ADDRESS BUS
BOOTSTRAP
LOADER
SECURITY
SECURE INTERNAL DATA BUS
DS5002 SOFTWARE ENCRYPTION BLOCK DIAGRAM Figure 9–2
PROGRAM
COUNTER
SECURE INTERNAL ADDRESS BUS
BOOTSTRAP
LOADER
SECURITY
SECURE INTERNAL DATA BUS
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DATA
POINTER
LOCK
DATA
POINTER
RANDOM
NUMBER
GENERATOR
LOCK
ENCRYPTED BYTEWIDE
DATA BUS
ADDRESS
ENCRYPTOR
40–BIT ENCRYPTION KEY
ENCRYPTED BYTEWIDE
DATA BUS
DATA
ENCRYPTOR
ENCRYPTED BYTEWIDE
DATA BUS
ADDRESS
ENCRYPTOR
64–BIT ENCRYPTION KEY
ENCRYPTED BYTEWIDE
DATA BUS
DATA
ENCRYPTOR
74
15
EXTERNAL
BYTEWIDE
RAM
8
16
EXTERNAL
BYTEWIDE
RAM
8
SDI