Cryptography – Communication system using cryptography – Time segment interchange
Reexamination Certificate
2007-02-27
2007-02-27
Moazzami, Nasser (Department: 2134)
Cryptography
Communication system using cryptography
Time segment interchange
C380S028000
Reexamination Certificate
active
09936570
ABSTRACT:
To encrypt another piece of data during encrypting process of a certain piece of data, a memory55is provided in parallel with a feedback line65which feeds back data from an encrypting module51using an encryption key K to a selector54.When an interrupt IT for processing plaintext block data N1is generated while plaintext block data M1is processed, ciphertext block data C1at timing of generation of the interrupt IT is made to be stored in a register56.The ciphertext block data C1stored in the memory55is made to be selected by the selector54at timing of completion of processing the plaintext block data N1, and processing the plaintext block data M1+1is started.
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Sorimachi Toru
Tokita Toshio
Moazzami Nasser
Tran Ellen C.
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