# Tags

A tag is a keyword or label that categorizes your question with other, similar questions. Using the right tags makes it easier for others to find and answer your question.

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 data-privacy× 2 Data privacy refers to (cryptographic) methods to prevent the disclosure of sensitive (identifying) information of persons. constants× 2 Fixed, more or less arbitrary parameter values that appear in the definitions of cryptographic schemes, such as fixed initialization vectors for hash functions or S-box tables for block ciphers. secure-index× 2 pseudo-random-permutation× 2 a function that cannot be distinguished (with practical effort) from a permutation selected at random with uniform probability from the family of all permutations … rabin-cryptosystem× 2 A public-key cryptosystem based on squaring modulo the product of two primes, introduced in 1979 by Michael O. Rabin and proven to have security reducible to the hardness of integer factorization. sha-3-competition× 2 Between 2007 and 2012 NIST ran a hash function competition to determine SHA-3. In the end Keccak was chosen as winner and became SHA-3. s-mime× 2 Secure/Multipurpose Internet Mail Extensions, or short S-MIME, is a standard for public key encryption and signing of MIME data. speck× 2 A family of lightweight symmetric block-ciphers designed for good performance in constrained software devices with block sizes ranging from 32 to 128 bits and key sizes ranging from 64 to 256 bits. polynomial× 2 An expression with multiple terms, each a different power of the same variable. perfect-secrecy× 2 ocb× 2 The Offset CodeBook Mode, an authenticated encryption mode of operation for a block cipher. md4× 2 RFC 1320 — the MD4 message-digest algorithm — is a cryptographic hash function with a digest length is 128 bits, developed by Ronald Rivest in 1990. monotone-access-structure× 2 Let $\Omega$ be a set of entities. An *access structure* $\mathcal{A}$ is a collection of nonempty subsets of the power set $P(\mathcal{A})$. This structure is called *monotone*, if $A\in\mathcal{A}$ … negligible× 2 so unimportant, that it isn't worth considering. For example, if a flaw in a cryptographic algorithm is considered to be negligible, it is insignificant to both the … lattice-crypto× 2 xml-encryption× 2 Encryption of data represented in XML according to the W3C Specification. three-pass-protocol× 2 The three-pass protocol uses commutative encryption to let two people communicate privately without having to exchange keys in advance. voip× 2 a technology that allows telephone calls to be made over computer networks like the Internet. universal-composability× 2 universal-hash× 2 u-prove× 2 a Crypto SDK was developed by Microsoft to support experimentation with the foundational features of the U-Prove technology. It is made available under the Apache 2.0 open-source license, w… suite-b a set of cryptographic algorithms promulgated by the National Security Agency as part of its Cryptographic Modernization Program. luby-rackoff a Feistel cipher where in each round the nonlinear function used is assumed to be chosen uniformly at random from the set of all such functions. These ciphers are mainly of th… md2 RFC 1319 — The MD2 Message-Digest Algorithm is a cryptographic hash function which is no longer considered secure. mars a 128-bit block cipher with variable key size of between 128 and 448 bits. It has a heterogeneous structure: several rounds of a cryptographic core are “jacketed” by un-keyed mixing rounds, to… niederreiter a variation of the McEliece Cryptosystem and is equivalent to McEliece from a security point of view, but encryption using Niederreiter is about ten times faster than … message-digest-algorithm mixing-function mixnets pallier pkcs8 Public-Key Cryptography Standard, number 8, describes the Private-Key Information Syntax Standard which is used to carry (encrypted or unencrypted) private certificate keypairs. See [RFC 5208](http://… pir A PIR (Private Information Retrieval) protocol allows a user to retrieve an item from a server in possession of a database without revealing which item is retrieved. software-obfuscation skipjack a 64-bit block cipher developed by the U.S. National Security Agency (NSA). sstp a VPN tunneling protocol that allows the tunneling of PPP or L2TP traffic over an SSL connection. threefish A family of tweakable symmetric block-cipher algorithms with 256, 512 and 1024 bit block and key sizes.