Turing (cipher)

Turing is a stream cipher developed by Gregory G. Rose and Philip Hawkes at Qualcomm for CDMA. It is designed to be fast in software and achieves around 5.5 cycles/byte on some x86 processors.

Turing generates 160 bits of output in each round by applying a non-linear filter to the internal state of an LFSR.

See also

• SOBER-128
• Helix

External links

• Turing article at Qualcomm
• Java Implementation of Turing Algorithm
• Slides and C reference implementation at Qualcomm

References

• Gregory G. Rose and Philip Hawkes, Turing: A Fast Stream Cipher, Fast Software Encryption 2003, pp290–306 (PDF).
• Antoine Joux and Frédéric Muller, A Chosen IV Attack Against Turing, Selected Areas in Cryptography 2003, pp194–207 (PDF).