トリプルDES（トリプルデス、英語: Triple DES、3DES）とは、共通鍵 ブロック暗号であるDESを3回施す暗号 アルゴリズム。 正式名称はTriple Data Encryption Algorithm(TDEA、Triple DEA)。時代の流れに伴い、鍵長56ビットのDESでは総当たり攻撃への耐性が低くなったことから、これを補う目的で考案された。
According to draft guidance published by NIST on July 19, 2018, the Triple Data Encryption Algorithm (TDEA or 3DES) is officially being retired. The guidelines propose that, after a period of public consultation, 3DES is deprecated for all new applications and usage is disallowed after 2023. 3des (או des משולש) הוא שיטת הצפנה משנת 1998 המבוססת על אלגוריתם des, שנועדה לחזק את הבטיחות של האחרון לאור העובדה שגודל מפתח ההצפנה של des הוא 56 סיביות בלבד - גודל שנחשב קטן יחסית (עבור טכנולוגיה של שנות ה-90). Template:Infobox block cipher In cryptography, Triple DES (3DES) is the common name for the Triple Data Encryption Algorithm (TDEA) block cipher, which applies the Data Encryption Standard (DES) cipher algorithm three times to each data block. Because of the availability of increasing computational power, the key size of the original DES cipher was becoming subject to brute force attacks 3DES Weakness 3DES is the last remaining 64-bit block cipher we support. 64-bit block ciphers are cryptographically weak in general. The SWEET32 attack was announced last year. While this approach (Birthday Attacks) was always a known approach, especially for 64-bit block ciphers, the SWEET32 announcement gave us a pragmatic demonstration of DES vs. 3DES. Data encryption is a requirement in the age of cyber criminals and advanced hacking techniques. But the roots of encryption are actually thousands of years old, and encryption in Meilleure cryptanalyse attaque de type rencontre au milieu , attaque de van Oorschot et Wiener, attaque de Stefan Lucks modifier - modifier le code - voir Wikidata (aide) Le Triple DES (aussi appelé 3DES) est un algorithme de chiffrement symétrique par bloc, enchaînant 3 applications successives de l'algorithme DES sur le même bloc de données de 64 bits , avec 2 ou 3 clés DES
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3DES is a block cipher which uses 48 rounds in its computation (transpositions and substitutions), and has a key length of 168 bits. The process of 3DES works as follows; 1) Data is encrypted using a 56-bit key. 2) Data is decrypted using a different key. 3) Data is encrypted using a completely new key
3des (או des משולש) הוא שיטת הצפנה משנת 1998 המבוססת על אלגוריתם des, שנועדה לחזק את הבטיחות של האחרון לאור העובדה שגודל מפתח ההצפנה של des הוא 56 סיביות בלבד - גודל שנחשב קטן יחסית (עבור טכנולוגיה של שנות ה-90).
Meilleure cryptanalyse attaque de type rencontre au milieu , attaque de van Oorschot et Wiener, attaque de Stefan Lucks modifier - modifier le code - voir Wikidata (aide) Le Triple DES (aussi appelé 3DES) est un algorithme de chiffrement symétrique par bloc, enchaînant 3 applications successives de l'algorithme DES sur le même bloc de données de 64 bits , avec 2 ou 3 clés DES Triple DES (označovaná jako TDES či 3DES) je bloková šifra založená na šifrování Data Encryption Standard (DES), které se jako vícenásobné šifrování aplikuje třikrát, čímž zvyšuje odolnost proti prolomení.. Původní DES má délku klíče 56 bitů, což se postupem času stalo nedostatečným a klasický DES tak byl ohrožen útoky hrubou silou. 3DES. As the security weaknesses of DES became more apparent, 3DES was proposed as a way of extending its key size without having to build an entirely new algorithm. Rather than using a single key as in DES, 3DES runs the DES algorithm three times, with three 56-bit keys: Key one is used to encrypt the plaintext. Microsoft announced on April 18, 2019 an updated timeline for 3DES retirement: "Starting July 10, 2019, Office 365 Skype for Business will begin retiring 3DES" Triple Data Encryption Algorithm (TDEA or 3DES) the 20+ year old cipher used in TLS, IPsec and encryption has been marked as weak/vulnerable since 2016 due to its small block size Wikipedia has a strong convention of of keeping sources/references/external links at the end of the article. I don't see why the "Definitive standards" list in this article should be an exception. And how about renaming it to something simpler like "Standards" or "3DES standards"? -- intgr 16:24, 31 May 2010 (UTC)