Hardware

CLP Security Modules

CLP-45: Configurable AES Core

The Advanced Encryption Standard (AES) is in widespread use now in standards such as 802.11i, WiMax, SSL, IPSec SRTP, Suite B and many other applications. This diversity of applications generates different performance requirements, modes of operation and key size selection for each target application. The CLP-45 Configurable AES Core allows designers to select a core that is optimized for the target requirement in both features and gate count. The core is proven in multiple tape-outs ranging down to 65 nm and is fully verified under the NIST CAVP (Crypto Algorithm Validation Program).

Key Features:

• Configurable AES look-aside core with support for cipher modes:
• ECB, CBC, CTR and f8
• Support for authenticating cipher modes CCM and GCM
• Features cipher based message authentication counters
• CMAC (compliant with NIST Special Publication SP 800-38b
• XCBC (1 key variant as described in RFC 3566)
• XCBC (3 key variant as proposed by Rogaway and Black)
• Multiple performance options to tune throughput versus gate count:
• Internal data path width
• S-box technology
• Options for any or all of 128, 192 and 256 bit keys
• Configurable context memory to optimize area versus performance trade-offs
• Hardware key expander
• Key memory accessible through a separate memory interface
• Test bench and synthesis scripts provided

Applications:

• IPSec, SRTP and SSL designs in residential gateways, multi-service access products
• 802.1AE MACsec applications in PHYs, LAN switches and routers
• WLAN applications such as 802.11i, Zigbee and 802.16
• Military and government communications systems such as Suite B
• Content protection - DRM and conditional access
• Storage security - tape systems

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