MARS has a 128-bit block size and a variable key size of between 128 and 448 bits (in 32-bit increments). Unlike most block ciphers, MARS has a heterogeneous structure: several rounds of a cryptographic core are "jacketed" by unkeyed mixing rounds.

Kirei - Character descriptions, Japanese manga covers, and merchandise information.
KodanClub.com: MARS - Kodansha's official English page for the series, with manga information, introduction, characters, and images.
KodanClub.com: MARS Gaiden: Namae no nai Uma - A page about the prequel to MARS, Namae no nai Uma, with manga information, introduction, characters, and images. From the official English Kodansha site.
MARS - Official TokyoPop site for the series with introduction, creator profile, characters, preview, and summaries.
Meta Description: [ Official site of manga publisher TOKYOPOP, publisher of FRUITS BASKET, LOVELESS, PRINCESS AI, D.N.ANGEL, .hack and many more. The site also provides free Manga magazine, manga pods and previews, up-to-the-minute manga news, and the national Rising Stars of Manga competition. ]
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