ARC4 (or "Alleged" RC4, which is fully compatible with RC4) is a widely
used stream cipher which forms part of popular protocols such as Secure
Sockets Layer (SSL) (used to protect Internet traffic) and WEP and WPA/TKIP
(used to secure legacy 802.11 wireless networks). RC4 was designed by
Ron Rivest of RSA Security in 1987, and the algorithm remains an RSA trade secret,
but compatible implementations called ARC4 may be used where RC4 is specified.
Helion ARC4 Solutions
Helion has developed a highly efficient ARC4 core, aimed at mid-rate
data throughputs and offering extremely low area in any target silicon.
This core has been well proven in production silicon, and is mature
and extremely easy to use.
As mentioned above, the ARC4 algorithm is used in some legacy
802.11 applications as part of the WEP and WPA (TKIP) protocols.
Helion has efficient hardware solutions in place for these applications;
check out our WEP/TKIP pages for more information.
- Offers Encrypt, Decrypt and Key initialisation operations
- External 8-bit datapath
- Extremely low area
- Standard version runs at a rate of 3 clocks per byte
- Special higher rate versions also available
For full details of the Helion ARC4 core, please download the datasheet appropriate
to your target technology.
Click here for the Xilinx FPGA core data sheet (PDF format)
Please contact Helion for ASIC, Actel and Altera datasheets.
For more detailed information on this or any of our other products and services,
please feel free to email us at
firstname.lastname@example.org and we will be pleased to discuss how we can assist
with your individual requirements.