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Algorithm Methods

6 RSA BSAFE Crypto-C Intel Hardware User’s Guide

capabilities. The AMs required to support the Intel security hardware are included as

part of Crypto-C.

As with all algorithm methods, the hardware-compatible AMs in Crypto-C are only

available for certain algorithm info types (AIs). The AIs in Crypto-C offer differing

levels of support for hardware, as follows:

• Crypto-C AIs that support hardware only, such as AI_HW_Random. For these AIs,

the hardware-compatible AMs are listed in the Crypto-C Library Reference Manual

as “Algorithm methods to include in application’s algorithm chooser.”

• Crypto-C AIs that support both hardware and software. For these AIs, the

hardware-compatible algorithm methods are listed in the Crypto-C Library

Reference Manual as “Token-based algorithm methods.”

• Crypto-C AIs that support only software and cannot be used with a hardware

device. In this case, there are no AMs that can be used for hardware.

The hardware-compatible AMs supported by these AIs are part of the generic Crypto-

C/BHAPI interface. To maintain flexibility in Crypto-C and allow support for

hardware created by different manufacturers, BHAPI requires the manufacturer to

supply a hardware method that is specific for the device.

Intel Hardware Algorithm Methods

To use the Intel hardware security features, you must create a special session chooser,

which associates the Intel-specific hardware methods with the generic hardware

methods built into the Crypto-C interface.

Table 2-1 Intel hardware capabilities and corresponding Crypto-C functions

Generic Hardware AM

Intel AM to Use in

Session Chooser Crypto-C AI Primitive

AM_HW_RANDOM HW_INTEL_RANDOM AI_HW_Random random number

generation

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 37 38

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RSA Security Home Security System 4.3 Manuel d'utilisateur Page 10