IBM PCIe Cryptographic Coprocessor Version 1


The IBM PCIe Cryptographic Coprocessor Version 1 (PCIeCC) is a hardware security module (HSM) which provides a high-security, high-throughput cryptographic subsystem. The IBM 4765 Cryptographic Security Module validated to FIPS 140-2, Overall Level 4 (highest level of security). See FIPS certification number 1505 (link resides outside of The 4765 Cryptographic Coprocessor is a tamper responding, programmable, cryptographic PCIe card, containing CPU, encryption hardware, RAM, persistent memory, hardware random number generator, time of day clock, infrastructure firmware, and software. Specialized hardware performs AES, DES, TDES, RSA, SHA-1, SHA-224 to SHA-512, and other cryptographic processes, relieving the main processor from these tasks. The coprocessor design protects your cryptographic keys and sensitive custom applications. The software running in the coprocessor can be customized to meet special requirements.

The PCIeCC has a PCIe local-bus-compatible interface. The coprocessor holds a secured subsystem module, batteries for backup power and a full-speed USB 2.0 host port available through a mini-A connector. The securely encapsulated subsystem contains two 32-bit PowerPC 405D5 RISC processors running in lock-step with cross-checking to detect malfunctions as well as a separate service processor used to manage self-test and firmware updates, RAM, flash memory, and battery-powered memory, cryptographic-quality random number generator, AES, DES, TDES, SHA-1, SHA-224, SHA-256, SHA-384, SHA-512 and modular-exponentiation (for example, RSA, DSA) hardware, and full-duplex DMA communications. A secure code-loading arrangement enables control program and application program loading and refreshes after coprocessor installation in your server. IBM offers a Linux-based subsystem control program and a cryptographic application programming interface (API) which implements the IBM Common Cryptographic Architecture (CCA).

The PCIeCC is supported in the following IBM server families:

Further details on specific supported environments are provided elsewhere on this Web site or on the Web sites for the individual server families.

Note that system software on some servers provides higher-level interfaces to the cryptographic functions in the PCIeCC. For example, some systems may offer Java interfaces which make use of the coprocessor.

Battery replacement

Battery replacement kits and multi-battery packs are now available for ordering as part numbers.

To order the battery-replacement kit, or the multi-battery pack, customers in:

News for current customers


New product release for IBM 4765 now available on IBM IBM-approved x86 servers and IBM AIX operating system, effective October 2015.

New product release CCA 5.0 for Linux on IBM z Systems™ now available effective July 2015. See Overview page for additional information.

As of February 19, 2013, the 4765 hardware security module (HSM) is validated to meet the MEPS (Méthode d'Évaluation des Produits Securitaire "bancaires") approval scheme used by Cartes Bancaires (CB) banking ecosystem. This standards certification allows the 4765 HSM to be used by CB member banks on their dedicated payment networks.

Add-on features are being offered for the IBM 4765 on IBM-approved x86 systems to support additional operating systems. See the IBM 4765 software updates page.

On System z, the coprocessor is available as Crypto Express3, Crypto Express4, and Crypto Express5. It is also available for Linux.