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In cryptography, Triple DES (3DES or TDES), officially the Triple Data Encryption Algorithm (TDEA or Triple DEA), is a symmetric-key block cipher, which applies the DES cipher algorithm three times to each data block. The 56-bit key of the Data Encryption Standard (DES) is no longer considered adequate in the face of modern cryptanalytic ...
The Data Encryption Standard (DES / ˌ d iː ˌ iː ˈ ɛ s, d ɛ z /) is a symmetric-key algorithm for the encryption of digital data. Although its short key length of 56 bits makes it too insecure for modern applications, it has been highly influential in the advancement of cryptography .
Standard algorithms and protocols provide a focus for study; standards for popular applications attract a large amount of cryptanalysis. Encryption standards [ edit ]
Many different primitives and algorithms are evaluated. The primitives are: symmetric encryption algorithms such as 3DES and AES; block cipher modes of operation such as ECB, CBC, CTR and XTS; authenticated encryption methods such as GCM; stream ciphers RC4, eSTREAM and SNOW 2.0; hashing algorithms MD5, RIPEMD-128/160, SHA-1, SHA-2 and Whirlpool;
A block cipher consists of two paired algorithms, one for encryption, E, and the other for decryption, D. [1] Both algorithms accept two inputs: an input block of size n bits and a key of size k bits; and both yield an n-bit output block. The decryption algorithm D is defined to be the inverse function of encryption, i.e., D = E −1.
DUKPT is used to encrypt electronic commerce transactions. While it can be used to protect information between two companies or banks, it is typically used to encrypt PIN information acquired by Point-Of-Sale (POS) devices. DUKPT is not itself an encryption standard; rather it is a key management technique. The features of the DUKPT scheme are:
ROT26: equivalent to no encryption at all. 2ROT13 was included in a spoof academic paper entitled "On the 2ROT13 Encryption Algorithm". [10] triple-ROT13: used jokingly in analogy with 3DES, it is equivalent to regular ROT13. ROT13 jokes were popular on many newsgroup servers, like net.jokes as early as the 1980s. [3]
But, some algorithms like BitLocker and VeraCrypt are generally not private-public key cryptography. For example, Veracrypt uses a password hash to generate the single private key. However, it can be configured to run in public-private key systems. The C++ opensource encryption library OpenSSL provides free and opensource encryption software ...