block encryption

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• Block cipher modes of operation — This article is about cryptography. For method of operating , see modus operandi. In cryptography, modes of operation is the procedure of enabling the repeated and secure use of a block cipher under a single key.[1][2] A block cipher by itself… …   Wikipedia

• Encryption software — is software whose main task is encryption and decryption of data, usually in the form of files on (or sectors of) hard drives and removable media, email messages, or in the form of packets sent over computer networks. Contents 1 Security 2… …   Wikipedia

• Block cipher — In cryptography, a block cipher is a symmetric key cipher operating on fixed length groups of bits, called blocks, with an unvarying transformation. A block cipher encryption algorithm might take (for example) a 128 bit block of plaintext as… …   Wikipedia

• Encryption layer in storage stack — There is a plurality of terms that are used to describe implementations of disk encryption: on the fly encryption (OTFE); full disk encryption (FDE), whole disk encryption; filesystem level encryption, encrypted filesystem, cryptographic… …   Wikipedia

• Encryption — Encrypt redirects here. For the film, see Encrypt (film). This article is about algorithms for encryption and decryption. For an overview of cryptographic technology in general, see Cryptography. In cryptography, encryption is the process of… …   Wikipedia

• Block size (cryptography) — In modern cryptography, symmetric key ciphers are generally divided into stream ciphers and block ciphers. Block ciphers operate on a fixed length string of bits. The length of this bit string is the block size. Both the input (plaintext) and… …   Wikipedia

• Disk encryption theory — Disk encryption is a special case of data at rest protection when the storage media is a sector addressable device (e.g., a hard disk). This article presents cryptographic aspects of the problem. For discussion of different software packages and… …   Wikipedia

• International Data Encryption Algorithm — IDEA An encryption round of IDEA General Designers Xuejia Lai and James Massey …   Wikipedia

• International Data Encryption Algorithm — IDEA Eine Verschlüsselungsrunde des IDEA Algorithmus Entwickler James L. Massey, Xueija Lai Veröffentlicht 1991 …   Deutsch Wikipedia

• Data Encryption Standard — The Feistel function (F function) of DES General Designers IBM First publis …   Wikipedia

• Format-preserving encryption — In cryptography, format preserving encryption (FPE) refers to encrypting in such a way that the output (the ciphertext) is in the same format as the input (the plaintext). The meaning of format varies. Typically only finite domains are discussed …   Wikipedia