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PCI-X Cryptographic Coprocessor
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IBM PCI Cryptographic Coprocessor

PKCS #11 API Performance

Measurements on the PKCS #11 Support Program are listed based on the use of a single Coprocessor. (Multiple Coprocessors are supported for greater throughput.)

Operation 10240 byte block 16384 byte block
SHA-1 7.1ms or 1.4MBps 7.4ms or 2.2MBps
DES-3 (ECB and CBC) 7.8ms or 1.31MBps 8.2ms or 2.00MBps


Note: The DES and SHA-1 rates are strongly impacted by the data block size. For example, see the CCA encryption rate.

Using a 1024-bit RSA key and a single-thread test program, a single Coprocessor performed:

  • 71.3 digital signature generations per second.
  • 112 digital signature verifications per second.


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