HKDF/HMAC/SHA-256, SHA-256 IP Core with Extended Functionalities

Overview

XIP3322B is a versatile Intellectual Property (IP) core designed for SHA-256 cryptographic hash function with extended support for HMAC message authentication code and HKDF key derivation function that are based on using SHA-256. SHA-256 is one of the most commonly used hash functions and is used in numerous cryptographic applications. XIP3322B offers a good balance between performance and resource requirements.

XIP3322B has been designed for easy integration with FPGA- and ASIC-based designs in a vendor-agnostic design methodology, and the functionality of XIP3322B does not rely on any FPGA manufacturer-specific features.

XIP3322B has also been successfully validated in the CAVP (Cryptographic Algorithm Validation Program) by NIST (National Institute for Standards and Technology).

Key Features

Versatility: XIP3322B supports the widely used cryptographic hash function SHA-256. It also has native support for commonly used message authentication code (HMAC) based on SHA-256 and key derivation function (HKDF) based on HMAC. This allows using XIP3322B for multiple cryptographic functions —for example, TLS 1.3 —more easily and efficiently than an IP core that supports only SHA-256.
Constant Latency: The execution time of XIP3322B is independent of the message and key values (apart from message length), and consequently provides protection against timing-based side-channel attacks.
Performance: XIP3322B provide has high performance and reaches hashing speeds of several hundreds of Mbps.
Compact Size: XIP3322B has compact size (for example, approximately 1800 ALMs and a three memory blocks in Intel ® Cyclone ® V family) permitting integration into resource constrained FPGA designs.
Standard Compliance: XIP3322B is compliant with NIST FIPS 180-4 Secure Hash Standard (SHS), FIPS 198-1 The Keyed-Hash Message Authentication Code HMAC), and RFC 5869 HMAC-based Extract-and-Expand Key Derivation Function (HKDF). Consequently, XIP3322B can be used in multiple cryptographic applications.

Benefits

Fully digital design
Portable to any ASIC or FPGA technology
Fully standard compliant
Easy to integrate
Several bus interfaces available
IP core designed in-house at Xiphera
Technical support by the original designers and cryptographic experts
CAVP validated

Block Diagram

Applications

XIP3322B supports four main functionalities:
- SHA-256: Computes a SHA-256 hash for an input message.
- HMAC: Computes an HMAC authentication tag for an input message using an authentication key.
- HKDF-extract: Computes the HKDF-extract function that calculates a pseudorandom key from initial key material.
- HKDF-expand: Computes the HKDF-expand function that expands the pseudorandom key to several additional pseudorandom keys of desired lengths for specific cryptographic algorithms.

Deliverables

XIP3322B can be shipped in a number of formats, including netlist, source code, or encrypted source code.
Additionally, synthesis scripts, a comprehensive testbench, and a detailed datasheet including an integration guide are included.

Technical Specifications

Foundry, Node

Any

Maturity

Hardware Tested

Availability

Immediate

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