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SAVILLE is a classified NSA Type 1 encryption algorithm, developed in the late 1960s, jointly by the Government Communications Headquarters (GCHQ) in the UK and the National Security Agency (NSA) in the US.^[1] It is used broadly, often for voice encryption, and implemented in many encryption devices.

Little is known publicly about the algorithm itself due to its classified nature and inclusion in the NSA's Suite A. Some documentation related to the KYK-13 fill device and statements made by military officials confirm that SAVILLE has a 128-bit key, which consists of 120 key bits and an 8-bit checksum. Furthermore, it is known that SAVILLE has two modes of operation: Autonomous Mode (also known as Key-Auto-KEY or KAK) and Autoclave Mode (also known as Cipher-Text Auto Key or CTAK).^[1] On the AIM microchip, it runs at 4% of the clock rate (compare DES at 76% and BATON at 129%). The Cypris chip mentions two modes; specifications for Windster and Indictor specify that they provide Saville I.

Some devices and protocols that implement SAVILLE:

Secure Telephone Equipment (STU)
The VINSON family (voice encryption)
UK Lamberton (BID/250)
APCO Project 25 (single-channel land mobile radios) (Saville has algorithm ID 04)
Versatile encryption chips: AIM, Cypris, Sierra I/II, Windster, Indictor, Presidio, Railman
Spendex 40
Spendex 50 (also known as DBT)
Elcrovox 1/4
Motorola's SECURENET encryption module named FASCINATOR

References

^ ^a ^b "Crypto Museum, the SAVILLE encryption algorithm".

External links

SAVILLE info at cryptomuseum.com

This cryptography-related article is a stub. You can help Wikipedia by expanding it.

[:0-1] "Crypto Museum, the SAVILLE encryption algorithm".

[1]

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-SAVILLE is an [[National Security Agency|NSA]] [[Type 1 encryption|Type 1]] [[cryptography|encryption algorithm]].  It is used broadly, often for voice encryption, and implemented in a large number of encryption devices.
+{{Short description|Classified National Security Agency Type 1 encryption algorithm}}
+{{Other uses|Saville (disambiguation)}}
+'''SAVILLE''' is a classified [[National Security Agency|NSA]] [[Type 1 encryption|Type 1]] [[cryptography|encryption algorithm]], developed in the late 1960s, jointly by the [[Government Communications Headquarters|Government Communications Headquarters (GCHQ)]] in the UK and the [[National Security Agency (NSA)]] in the US.<ref name=":0">{{Cite web|url=http://www.cryptomuseum.com/crypto/usa/saville.htm|title=Crypto Museum, the SAVILLE encryption algorithm}}</ref> It is used broadly, often for voice encryption, and implemented in many encryption devices.
-Little is known publically about the algorithm itself.  Some documentation related to the [[KYK-13]] [[fill device]] and statements made by military officials suggest that SAVILLE has a 128-bit key.  On the [[Advanced INFOSEC Machine|AIM]] [[microchip]], it runs at 4% of the clock rate (compare [[Data Encryption Standard|DES]] at 76% and [[Baton (cipher)|Baton]] at 129%).  The [[Cypris (microchip)|Cypris chip]] mentions 2 modes; specifications for [[Windster (microchip)|Windster]] and [[Indictor (microchip)|Indictor]] specify that they provide Saville I.
+Little is known publicly about the algorithm itself due to its classified nature and inclusion in the NSA's [[NSA Suite A Cryptography|Suite A]]. Some documentation related to the [[KYK-13]] [[fill device]] and statements made by military officials confirm that SAVILLE has a 128-bit key, which consists of 120 key bits and an 8-bit checksum. Furthermore, it is known that SAVILLE has two modes of operation: Autonomous Mode (also known as Key-Auto-KEY or KAK) and Autoclave Mode (also known as Cipher-Text Auto Key or CTAK).<ref name=":0" />  On the [[Advanced INFOSEC Machine|AIM]] [[microprocessor|microchip]], it runs at 4% of the clock rate (compare [[Data Encryption Standard|DES]] at 76% and [[BATON]] at 129%).  The [[Cypris (microchip)|Cypris chip]] mentions two modes; specifications for [[Windster (microchip)|Windster]] and [[Indictor (microchip)|Indictor]] specify that they provide Saville I.
 Some devices and protocols that implement SAVILLE:
+* [[STU-I|Secure Telephone Equipment (STU)]]
 * The [[VINSON]] family (voice encryption)
+* UK Lamberton (BID/250)
 * [[APCO Project 25]] (single-channel land mobile radios) (Saville has algorithm ID 04)
 * Versatile encryption chips: [[Advanced INFOSEC Machine|AIM]], [[Cypris (microchip)|Cypris]], [[Sierra (microchip)|Sierra I/II]], [[Windster (microchip)|Windster]], [[Indictor (microchip)|Indictor]], [[Presidio (microchip)|Presidio]], [[Railman (microchip)|Railman]]
+* [http://www.cryptomuseum.com/crypto/philips/spendex40/index.htm Spendex 40]
+* [http://www.cryptomuseum.com/crypto/philips/spendex50/index.htm Spendex 50] (also known as DBT)
+* [http://www.cryptomuseum.com/crypto/siemens/elcro/ex1-4.htm Elcrovox 1/4]
+* Motorola's SECURENET encryption module named [[FASCINATOR]]
+== References ==
+<references />
+==External links==
+* [http://cryptomuseum.com/crypto/usa/saville.htm SAVILLE info at cryptomuseum.com]
+{{Cryptography navbox | block}}
+[[Category:Block ciphers]]
 [[Category:Type 1 encryption algorithms]]
+{{crypto-stub}}