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DECT Standard Cipher is an encryption standard, used in DECT phones to protect communication between a handset and its associated base station. While most of the DECT standard is publicly available, the part describing the DECT Standard Cipher was only available under a non-disclosure agreement to the phones' manufacturers from ETSI.

Reverse engineered[]

On June 8, 2002, a posting was made to the alt.anonymous.messages newsgroup containing what was claimed to be the reverse engineered source code of the implementation of the DECT Standard Cipher for the Samsung SP-R6150 telephone[1]. This claim has since been refuted.[2]

In 2008, members of the project actually did reverse engineer the DECT Standard Cipher,[3] and as of 2010 there has been a viable attack on it that can recover the key.[4]


  1. alleged DECT Standard Cipher alt.anonymous.messages posting
  2. Template:Cite web
  3. talk-25c3.pdf Slides of the presentation at the 25th Chaos Communication Congress
  4. Template:Cite web

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