先進加密標準是什麼
小編爲大家介紹了先進加密標準是什麼，希望對你有幫助哦!
For the past three years，the National Institute of Standards and Technology (NIST) has been working to develop a new encryption standard to keep government information organization is in the final stages of an open process of selecting one or more algorithms，or data-scrambling formulas，for the new Advanced Encryption Standard (AES) and plans to make adecision by late summer or early standard is slated to go into effect next year.
AES is intended to be a stronger，more efficient successor to Triple Data Encryption Standard (3DES)，which replaced the aging DES，which was cracked in less than three days in July 1998.
“Until we have the AES，3DES will still offer protection for years to there is no need to immediately switch over，”says Edward Roback， acting chief of the computer security division at NIST and chairman of the AES selection committee.“What AES will offer is a more efficient will be a federal standard，but it will be widely implemented in the IT community.”
According to Roback，efficiency of the proposed algorithms is measured by how fast they can encrypt and decrypt information，how fast they can present an encryption key and how much information they can encrypt.
The AES review committee is also looking at how much space the algorithm takes up on a chip and how much ck says the selection of a more efficient AES will also result in cost savings and better use of resources.
“DES was designed for hardware implementations，and we are now living in a world of much more efficient software，and we have learned an awful lot about the design of algorithms，”says Roback.“When you start multiplying this with the billions of implementations done daily，the saving on overhead on the networks will be enormous.”
The process of selecting the algorithm for AES has been notable for its openness and is a marked departure from the government's past inclination toward secrecy in discussing encryption standards，which led to the public cracking of DES after critics questioned the government's assertion that the standard was still secure.
NIST kicked off the selection process in September erences were held in August 1998 and March 1999 ;cryptographers from around the world discussed the algorithm candidates and helped narrow the list to 15 and then to five finalists：IBM's MARS;RSA Laboratories* RC6 ;Joan Daemen and Vincent Rijmen's Rijndael;Ross Andersen，Eli Baham and Lars Knudsen's Serpent;and Counterpane Labs* Twofish.
While most evaluators of the algorithms want to avoid complexity by selecting one to serve as a standard，there's a minority that wants to select more than one.
在過去三年中，(美國)國家標準與技術局(NIST)已在研究開發一種新的加密標準，以確保政府的信息安全。該組織目前正處於爲新的先進加 密標準(AES)選擇一個或幾個算法或數據打亂公式的開放過程的最後階段，並計劃在夏末或秋初作出決定。此標準內定明年實施。
AES預定爲比三層數據加密標準(3DES)更強、更高效的後續標準，3DES替代了老化的DES加密標準，DES在1998年7月在不到三天的時間內就 被破譯了。
NIST計算機安全部的代理主管兼AES選擇委員會主席Edward Roback說 ：“在我們擁有AES之前，3DES還將在今後幾年提供保護。所以沒有必要馬上轉換。AES所提供的是一種更有效的算法。它將是一項聯邦標準，但它將在IT界 廣泛實施。”
據Roback稱，提議中的算法的效率是通過對信息加密和解密有多快、給出加密密鑰有多快以及能對多少信息加密等幾個方面進行測量的。
AES評價委員會也要看算法佔據芯片上多少空間和需要多少內存。Roback說，選擇一個更高效的AES也會帶來成本的節省和資源的更好利用。
Roback說：“DES是爲硬件實現而設計的，而我們現在處於軟件更高效的世界，我們對算法的設計有極多的瞭解。當我們開始大規模使用此算法，每天實現幾十億次的加密時，(算法帶來的)網絡開銷的節省將是巨大的。”
爲AES選擇算法的過程是以其公開性和透明度稱著。這標誌着政府從以往討論加密標準時傾向於保密的做法一刀兩斷，它導致了政府在斷言DES 標準仍是安全時被公開破譯。
NIST在1997年9月開始這個選擇過程。1998年8月和 1999年3月召開了會議，來自全世界的密碼專家討論了候選的算法，幫助把算法縮小到15 個，最後到了5個：IBM的MARS算法，RSA實驗室的RC6算法、Joan Daemen和Vincent Rijmen兩人的Rijndael算法、Eli Baham和Lars Knudsen兩人的Serpent算法以及Counterpane 實驗室的Twofish算法。
大多數算法鑑定者都選擇一個作標準以避免複雜性，但也有一小部分人要選擇多個算法。
