- FIPS 202, SHA-3 Standard: Permutation-Based Hash and Extendable-Output Functions
- FIPS 180-4: Secure Hash Functions (limited to SHA-3 use)
- All four fixed-length SHA-3 Hash Functions:
- Both SHA-3 Extendable Output Functions (XOF)::
- High throughput: single cycle per hashing round:
- SHA3-224: 48.0 Mbits/MHz
- SHA3-256: 45.3 Mbits/MHz
- SHA3-384: 34.7 Mbits/MHz
- SHA30-512: 24.0 Mbits/MHz
- SHAKE-128: 56.0 Mbits/MHz
- SHAKE-256: 45.3 Mbits/MHz
- Intelligent buffers management optionally allows receiving new input while processing previous message
- Throughput over 20 Gb/s in most modern ASIC technologies
- AMBA® AXI4-Stream I/O data interfaces
Fully autonomous operation
- Requires no assistance from host processor
- Automatic padding insertion
- Hashing function
- Input & output bus bit width
- Number of input buffers
- Number of Hash rounds per cycle
- Verilog RTL source code or targeted FPGA netlist
- Integration Test-Bench
- Software C-Model
- User documentation
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SHA-3SHA-3 Secure Hash Function Core
The SHA-3 is a high-throughput, area-efficient hardware implementation of the SHA-3 cryptographic hashing functions, compliant to NISTS’s FIPS 180-4 and FIPS 202 standards.
The core implements all the fixed-length and extendable hashing functions provisioned by these standards. The hashing function is synthesis-time configurable; a version supporting run-time hashing function selection can be made available upon request.
The SHA-3 core can optionally allow for higher throughput by using input message buffering, which allows it to receive new input while still processing the previous message. Also, the number of hashing rounds per clock is configurable at synthesis time, allowing users to constrain performance to save silicon resources when desired.
The core’s processing bitrate is impressively high in its maximum throughput configuration, ranging from 24 bits per cycle for the SHA3-512 to 48 bits per cycle for the SHA3-224. Even then the SHA-3 delivers a small silicon footprint of less than 70k gates for the maximum throughput configuration, with as low as 28k gates possible.
The core is designed for ease of use and integration and adheres to industry best-standards coding and verification practices. It requires no assistance from a host processor, and uses standard AMBA® AXI4-Stream interfaces for input and output data. Technology mapping, timing closure, and scan insertion are trouble-free, as the core contains no multi-cycle or false paths, and uses only rising-edge-triggered D-type flip-flops, no tri-states, and a single-clock/reset domain. Its reliability and low risk have been proven through rigorous verification and FPGA validation.
This core can be mapped to any any Intel, Lattice, MicroSemi, or Xilinx programmable device, or to any ASIC technology, provided sufficient silicon resources are available. Please contact CAST Sales to get accurate characterization data for your specific implementation requirements. Meanwhile, we provide the following representative results (each in a new pop-up window):
The SHA-3 IP core can ensure data integrity and/or user authentication in a range of applications including IPsec and TLS/SSL protocol engines, encrypted data storage, secure processing systems, e-commerce, and financial transaction systems.