Hardware

FPGA

CLP-41f: SNOW 3G Cipher Core

The CLP-41f core implements the SNOW 3G stream cipher that forms the heart of the 3GPP confidentiality algorithm UEA2 and the 3GPP integrity algorithm UIA2. The Release 7 standard is governed by a European Telecommunications Standards Institute (ETSI) document - SNOW 3G Algorithm Specification Version 1.1. The core also supports Release 8 of the standard which specifies a different initialization vector (IV) for the core. These algorithms are referred to as 128-EEA1 (encryption) and 128-EIA1 (integrity). The CLP-41f implements a flow-through or in-line version of the core although the core can also be provided as a look-aside engine.

Key Features:

• SNOW 3G cipher for 3GPP
• Supports both the confidentiality (UEA2) and Integrity (UIA2) modes in Release 7
• Supports both the confidentiality (128-EEA1) and Integrity (128-EIA1) modes in Release 8
• Maximum clock frequency: 160 MHz (Virtex-5, -3 speed grade)
• Up to 1.5 Gbps @ 160 MHz for 64 byte messages (UEA2 and 128-EEA1)
• Up to 4.0 Gbps @ 160 MHz for 512 byte messages (UEA2 and 128-EEA1)
• Available under terms of the Xilinx SignOnce IP License
• Proven IP core shipped to both FPGA and ASIC customers
• Flow-through architecture
• Ingress and egress FIFO depth configurable at build time
• Key size - 128 bits

Applications:

• 3GPP - UMTS and LTE

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