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The Zodiac Killer is the pseudonym of an unidentified serial killer who murdered five known victims in the San Francisco Bay Area between December 1968 and October 1969. The case has been described as "arguably the most famous unsolved murder case in American history," and has become both a fixture of popular culture and a focus for efforts by amateur detectives.
In cryptography, Zodiac is a block cipher designed in 2000 by Chang-Hyi Lee for the Korean firm SoftForum. Zodiac uses a 16-round Feistel network structure with key whitening . The round function uses only XORs and S-box lookups.
He taunted police by sending letters accompanied by ciphers to local news outlets and claimed that he was responsible for more than 30 deaths. The Zodiac was never caught — and there are ...
The Zodiac killer is one of the most notorious killers of all time, but has never been caught. Now, a family who knew the prime suspect Arthur Leigh Allen have come forward for the first time in ...
A cipher used by the Zodiac Killer, called "Z-340", organized into triangular sections with substitution of 63 different symbols for the letters and diagonal "knight move" transposition, remained unsolved for over 51 years, until an international team of private citizens cracked it on December 5, 2020, using specialized software.
The Chronicle received the original Zodiac letters in the 1960s and said it gets hundreds of tips every year on potential suspects, including people’s relatives and neighbors.
The Zodiac continued to communicate with the authorities for the remainder of 1970 via letters and greeting cards to the press. In a letter postmarked 20 April 1970, the Zodiac supplied a thirteen-character cipher that he claimed held his name. That statement is not true. The ZK wrote "My name is _____ (coded letters)".
The Zodiac Killer terrorised California in the late 1960s and beyond, taunting authorities and the media with cryptic messages. But more than 20 years after he first emerged, another killer ...