Vendor: CAST Category: Symmetric Crypto

Advanced Encryption Standard Engine

The AES encryption IP core implements hardware Rijndael encoding and decoding in compliance with the NIST Encryption Standard.

Overview

The AES encryption IP core implements hardware Rijndael encoding and decoding in compliance with the NIST Advanced Encryption Standard. It processes 128-bit blocks, and is programmable for 128-, 192-, and 256-bit key lengths.

Two architectural versions are available to suit system requirements. The Standard version (AES-S) is more compact, using a 32-bit datapath and requiring 44/52/60 clock cycles for each data block (128/192/256-bit cipher key, respectively). The Fast version (AES-F) achieves higher throughput, using a 128-bit datapath and requiring 11/13/15 clock cycles for each data block.
 
Various cipher modes can be supported (CBC, CFB, CTR, ECB, LRW, and OFB). The core works with a pre-expanded key, or with optional key expansion logic.

The AES core is a fully synchronous design and has been evaluated in a variety of technologies. It is available optimized for ASICs or FPGAs, with complete deliverables.

Key features

  • Encrypts and decrypts using the AES Rijndael Block Cipher Algorithm
  • Satisfies Federal Information Processing Standard (FIPS) Publication 197 from the US National Institute of Standards and Technology (NIST)
  • Processes 128-bit data in 32-bit blocks
  • Employs user-programmable key size of 128, 192, or 256 bits
  • Smallest version supports a single block cipher mode. Modes available:
    • Cipher Block Chaining (CBC)
    • Cipher Feedback (CFB)
    • Counter (CTR)
    • Electronic Codebook (ECB)
    • Liskov-Rivest-Wagner (LRW)
    • Output Feedback (OFB)
  • Two architectural versions:
    • Standard is more compact:
      32-bit data path size
      Processes each 128-bit data block in 44/52/60 clock cycles for 128/192/256-bit cipher keys, respectively
    • Fast yields higher transmission rates: 128-bit data path Processes each 128-bit block in 11/13/15 clock cycles for 128/192/256-bit cipher keys, respectively
  • Works with a pre-expanded key or can integrate the optional key expansion function
  • NIST-Validated
  • Simple, fully synchronous, reusable design
  • Available as fully functional and synthesizable VHDL or Verilog, or as a netlist for popular programmable devices
  • Complete deliverables include test benches, C model and test vector generator

Block Diagram

AES block diagram

Specifications

Identity

Part Number
AES
Vendor
CAST
Type
Silicon IP

Files

Product Sheet Download

Note: some files may require an NDA depending on provider policy.

Provider

CAST
HQ: USA

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Frequently asked questions about Symmetric Cryptography IP cores

What is Advanced Encryption Standard Engine?

Advanced Encryption Standard Engine is a Symmetric Crypto IP core from CAST listed on Semi IP Hub.

How should engineers evaluate this Symmetric Crypto?

Engineers should review the overview, key features, supported foundries and nodes, maturity, deliverables, and provider information before shortlisting this Symmetric Crypto IP.

Can this semiconductor IP be compared with similar products?

Yes. Buyers can compare this product with similar semiconductor IP cores or IP families based on category, provider, process options, and structured technical specifications.

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