Cryptography – Equipment test or malfunction indication
Reexamination Certificate
2006-09-07
2010-10-19
Smithers, Matthew B (Department: 2437)
Cryptography
Equipment test or malfunction indication
C713S194000
Reexamination Certificate
active
07817799
ABSTRACT:
Provided are a method, system, and article of manufacture, wherein a first write only register is maintained in an encryption engine of a cryptographic unit. A second write only register is maintained in a decryption engine of the cryptographic unit. A cryptographic key is written in the first write only register and the second write only register, wherein the cryptographic key is inaccessible for reading from any entity that is external to the cryptographic unit.
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Greco Paul Merrill
Sandberg Melanie Jean
Schaffer Scott Jeffrey
Dutta Rabindranath
International Business Machines - Corporation
Konrad Raynes & Victor LLP
Sholeman Abu
Smithers Matthew B
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