Hardware

CLP Security Modules

CLP-26: Configurable SHA and MD5 Hash Core

The SHA algorithms are message-digest or hashing designs required for digital signature applications where a large message has to be condensed before being signed with a private key. The algorithm takes a message of arbitrary length and produces a fixed length message digest. Recently there have been reports that SHA-1 has been compromised and MD5 may be susceptible to cracking. The CLP-26 therefore offers support for any combination of SHA algorithms as well as MD5 and is factory configured to the requirement specified in the standard being implemented.

Key Features:

• Core capable of performing MD5, SHA-1, SHA-224, SHA-256, SHA-384 & SHA-512 algorithms
• Core is factory-configured and verified for any subset of the supported algorithms. All logic for unused algorithms is removed
• Configurable 32 or 64-bit interfaces
• Separate context and message interfaces
• Implicit message padding is automatically handled by the core
• Final hash result may be written to either the message memory and/or the context cache
• Core will truncate the final hash if required
• Optional H-MAC or SSL-MAC for message authentication is available
• Test bench provided

Applications:

• IPsec and SSL gateways
• WiMax applications such as 802.16
• DRM such as OMA, DVB, & WDRM
• E-commerce acceleration
• Military communications systems

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