In cryptography, Derived Unique Key Per Transaction (DUKPT) is a key management scheme in which for every transaction, a unique key is used which is derived from a fixed key. Therefore, if a derived key is compromised, future and past transaction data are still protected since the next or prior keys cannot be determined easily.
În criptografie, 3DES, numit și Triplu DES (în engleză Triple DES) este un cifru pe blocuri format pe baza DES, prin aplicarea acestuia de trei ori.. Algoritm. Când s-a descoperit că cheile pe 56 de biți folosite de DES nu sunt suficiente pentru a proteja împotriva atacurilor cu forță brută, 3DES a fost ales ca modalitate simplă de a mări spațiul cheilor fără nevoia de a trece Triple Data Encryption Standard (DES) is a type of computerized cryptography where block cipher algorithms are applied three times to each data block. 3DES eller Triple DES är en utökning av krypteringsalgoritmen DES, "Data Encryption Standard", som ger förbättrat skydd genom att kryptera samma data tre gånger med DES med olika krypteringsnycklar.Ett antal varianter finns, vanligast är: DES-EDE3: Klartext krypteras med nyckel1, dekrypteras med nyckel2, krypteras med nyckel3. Vilket ger en total nyckelstorlek på 168 bitar. 3DES, joka tunnetaan myös nimellä Triple-DES tai DES-3, on nykyään yleisimmin käytetty DES-salauksen muoto.Se käyttää samaa algoritmia kuin DES, mutta tuo mukaan lisää suojauskertoja (iterations). 3DESistä on kolme eri versiota. Vaikka avaimen pituudet näiden versioiden välillä vaihtelevatkin, ne ovat silti kaikki yhtä turvallisia. In cryptography, Derived Unique Key Per Transaction (DUKPT) is a key management scheme in which for every transaction, a unique key is used which is derived from a fixed key. Therefore, if a derived key is compromised, future and past transaction data are still protected since the next or prior keys cannot be determined easily. The Nintendo 3DS is a handheld game console produced by Nintendo.The system was announced in March 2010 and officially unveiled at E3 2010 as the successor to the Nintendo DS.The system features backward compatibility with older Nintendo DS video games. As an eighth-generation console, its primary competitor was Sony's PlayStation Vita.. The handheld's most prominent feature is its ability to
In cryptography, Triple DES is a block cipher created from the Data Encryption Standard (DES) cipher by using it three times. Triple DES is also known as TDES or, more standard, TDEA (Triple Data Encryption Algorithm ).. When it was discovered that a 56-bit key of DES is not enough to protect from brute force attacks, TDES was chosen as a simple way to enlarge the key space without a need to
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。 O 3DES (Triplo DES), sigla para Triple Data Encryption Standard, é um padrão de criptografia baseado em outro algoritmo de criptografia simétrica, o DES, desenvolvido pela IBM em 1974 e adotado como padrão em 1977.O 3DES usa 3 chaves de 64 bits,embora apenas 56 bits de cada chave são efetivamente usados, os outros 8 bits são usados para verificar paridade. În criptografie, 3DES, numit și Triplu DES (în engleză Triple DES) este un cifru pe blocuri format pe baza DES, prin aplicarea acestuia de trei ori.. Algoritm. Când s-a descoperit că cheile pe 56 de biți folosite de DES nu sunt suficiente pentru a proteja împotriva atacurilor cu forță brută, 3DES a fost ales ca modalitate simplă de a mări spațiul cheilor fără nevoia de a trece Triple Data Encryption Standard (DES) is a type of computerized cryptography where block cipher algorithms are applied three times to each data block.
Triple Data Encryption Standard (DES) is a type of computerized cryptography where block cipher algorithms are applied three times to each data block.
Triple Data Encryption Standard (DES) is a type of computerized cryptography where block cipher algorithms are applied three times to each data block. 3DES eller Triple DES är en utökning av krypteringsalgoritmen DES, "Data Encryption Standard", som ger förbättrat skydd genom att kryptera samma data tre gånger med DES med olika krypteringsnycklar.Ett antal varianter finns, vanligast är: DES-EDE3: Klartext krypteras med nyckel1, dekrypteras med nyckel2, krypteras med nyckel3. Vilket ger en total nyckelstorlek på 168 bitar. 3DES, joka tunnetaan myös nimellä Triple-DES tai DES-3, on nykyään yleisimmin käytetty DES-salauksen muoto.Se käyttää samaa algoritmia kuin DES, mutta tuo mukaan lisää suojauskertoja (iterations). 3DESistä on kolme eri versiota. Vaikka avaimen pituudet näiden versioiden välillä vaihtelevatkin, ne ovat silti kaikki yhtä turvallisia.