Pseudorandom function family — In cryptography, a pseudorandom function family, abbreviated PRF, is a collection of efficiently computable functions which emulate a random oracle in the following way: No efficient algorithm can distinguish (with significant advantage) between… … Wikipedia
Pseudorandom generator theorem — In computational complexity a distribution is considered pseudorandom if no efficient computation can distinguish it from the true uniform distribution by a non negligible advantage. Formally, a family of distributions Dn is pseudorandom if for… … 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
Feistel cipher — In cryptography, a Feistel cipher is a symmetric structure used in the construction of block ciphers, named after the German IBM cryptographer Horst Feistel; it is also commonly known as a Feistel network. A large proportion of block ciphers use… … Wikipedia
Блочный шифр — Общая схема работы блочного шифра Блочный шифр разновидность симметричного шифра … Википедия
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
Deniable encryption — In cryptography and steganography, deniable encryption is encryption that allows its users to convincingly deny that the data is encrypted, or that they are able to decrypt it[citation needed]. Such convincing denials may or may not be genuine.… … Wikipedia
Disk encryption software — To protect confidentiality of the data stored on a computer disk a computer security technique called disk encryption is used. This article discusses software that is used to implement the technique (for cryptographic aspects of the problem see… … Wikipedia
Blowfish (cipher) — Infobox block cipher name = Blowfish caption = The round function (Feistel function) of Blowfish designers = Bruce Schneier publish date = 1993 derived from = derived to = Twofish key size = 32 448 bits in steps of 8 bits; default 128 bits block… … Wikipedia
PRP — may stand for: * Pan retinal photocoagulation * Petroleum Remediation Product * Poly ribose ribitol phosphate * People s Republic of Poland * Performance related pay * Personnel Reliability Program * Petroleum Remediation Product * Pityriasis… … Wikipedia