- BATON
:"For other uses, see
baton ."Infobox block cipher
name = BATON
caption =
designers =National Security Agency
publish date =
derived from =
derived to =
key size = 320 bits (160 effective)
block size = 128 bits
structure =
rounds =
cryptanalysis =BATON is a Type 1
block cipher , used by theUnited States government to secure all types of classified information.BATON has a 128-bit block size and a 320-bit key. 160 bits of the key are
checksum material; they do not affect the security of the algorithm itself but rather prevent unauthorized keys from being loaded if a BATON device ends up in the hands of an adversary. BATON is fast: on theAdvanced INFOSEC Machine (AIM) chip, it encrypts data at 129% of the clock rate, as opposed to 76% for DES, 25% for Triple DES, and 4% forSAVILLE . Its speed and parallelizability were major factors in its selection.The Sierra II documentation suggests that BATON may be related to
MEDLEY .Usage
BATON is used in a variety of products and standards:
*APCO Project 25 (Public standard for land mobile radio) (Algorithm IDs 01 and 41)
*PKCS#11 (Public standard for encryption tokens)
*CDSA/CSSM (Another public standard)
*HAIPE-IS (NSA 's version ofIPsec )
*FNBDT (Advanced flexible voice security protocol)*Thales
Datacryptor 2000 (a British network-encryption box)
*SecNet-11 (a crypto-secure802.11b PC Card , based on the Sierra chip)
*Fortezza Plus (aPC Card product, used in the STE)
*SafeXcel-3340 (a HAIPIS network-encryption box)
*Numerous embeddable encryption modules: AIM, CYPRIS,MYK-85 ,Sierra (microchip) , etc.External links
* [http://www.scardsoft.com/documents/Security/pkcs11_v211.pdf PKCS documentation]
* [http://www.security-forums.com/forum/viewtopic.php?t=12641 Discussion of BATON]
* [http://archives.neohapsis.com/archives/crypto/2000-q4/0028.html Quotes about BATON]
* [http://csrc.nist.gov/keyrecovery/ees_q-a.txt Senate security interview]
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