The IBM 4758 is a "Programmable secure coprocessor." This term embodies two somewhat orthogonal concepts; as a secure coprocessor, the device provides a haven for security and cryptographic operations, safe against some specified level of physical attack; as the device is programmable, what these operations are (the software configuration) can be established in a number of ways, to accommodate various customer scenarios. If a customer installation depends on the security properties of a particular type of 4758 device with a particular software configuration, it is critical that they verify that the black box inside their machine really is that type of device, configured in that way.
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