Keywords: A5-1 GSM cipher.svg A5-1 GSM encryption stream cypher diagram with the three shift register One register is shifted when the orange bit has the majority over the three orange bits Then one bit is inserted to a XOR between the blue bits Schéma du A5/1 et ses trois registres à décalage Un registre est décalé si le bit en orange correspond à la majorité des trois bits oranges On insère alors un bit correspondant à un XOR entre les bits en bleu A5-1 png 2009-12-01 13 55 UTC A5-1 png User Matt Crypto derivative work Tsaitgaist <span class signature-talk >talk</span> vectorization tsaitgaist A5-1 png inkscape original upload log This image is a derivative work of the following images File A5-1 png licensed with PD-user 2005-06-25T12 13 10Z Dake 800x517 52219 Bytes <nowiki>A5/1 algorithm Public Domain </nowiki> Uploaded with derivativeFX Symmetric cipher diagrams Stream Cipher Ciphers GSM_Standard |