HMAC-IP-59 MD5, SHA-1, SHA-2, SHA-3 Hash based HMAC, accelerators

HMAC-IP-59 (EIP-59) is IP for accelerating the various single pass HMAC (FIPS-198-1) algorithms using secure hash integrity algorithms like MD5 (RFC1231), SHA-1 (FIPS-180-2), SHA-2 (FIPS-180-3/4) and SHA-3 (FIPS-202), up to 8 Gbps. Designed for fast integration, low gate count and full transforms, the HMAC-IP-59 accelerators provide a reliable and cost-effective embedded IP solution that is easy to integrate into high-speed crypto pipelines.

Secure Hash-based HMAC family of accelerators

Available in several configurations / performance grades

Library element for platform security and packet engines

How the HMAC-IP-59 works

The HMAC-IP-59 is a family of the cryptographic library elements in the Rambus hardware IP library (formerly of Inside Secure). For example, the HMAC-IP-59 is the hash core embedded in the IPsec packet engines as well as the VaultIP root of trust cores providing support for MD5 and SHA based Hash and HMAC functions. The accelerators include I/O registers, encryption and decryption cores, and the logic for feedback modes and key scheduling.

Sustained performance for any object sizes ranges from 2 to 8 Gbps, depending on the configuration and area. Gate counts ranges from 23K to 95K gates depending on the configuration.

HMAC-IP-59 MD5, SHA-1, SHA-2, SHA-3 based HMAC Accelerators
HMAC-IP-59 MD5, SHA-1, SHA-2, SHA-3 based HMAC Accelerators
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HMAC-IP-59 Information

Key benefits:

  • Silicon-proven implementation
  • Fast and easy to integrate into SoCs
  • Flexible layered design
  • Complete range of configurations
  • World-class technical support


  • Wide bus interface
  • Supporting HMAC and Basic Hash operations for all algorithms: MD5, SHA-1, SHA-2 (224, 256, 384, 512), SHA-3 (224, 256, 384, 512)
  • MAC Key XOR and Message padding
  • Message data scheduling hardware
  • Calculation of “inner digest” and “outer digest” from a MAC Key input
  • Calculation of “inner hash” and “outer hash” from a MAC Key input or “inner digest” and “outer digest” input
  • MAC Key sizes shorter, equal and longer than algorithm block size
  • Hash and HMAC context switching
  • Continued hash / HMAC support
  • Standard, high frequency and high performance versions available
  • Secure hash standard-compliant FIPS-180-2, FIPS-180-3, FIPS-180-4
  • HMAC support for all algorithms, compliant with FIPS-198-1, FIPS-198
  • Fully synchronous design


  • HASH-IP-57 / EIP-57 Hash MD5, SHA-1, SHA-2, SHA-3
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