# 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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 voip× 2 a technology that allows telephone calls to be made over computer networks like the Internet. pir× 2 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. remote-data-checking× 2 Remote data checking protocols allow a client that has stored data at an untrusted server to efficiently verify that the server possesses the original data without retrieving it. skipjack× 2 a 64-bit block cipher developed by the U.S. National Security Agency (NSA). s-mime× 2 Secure/Multipurpose Internet Mail Extensions, or short S-MIME, is a standard for public key encryption and signing of MIME data. secure-index× 2 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. key-escrow× 2 key-rotation× 2 Key rotation refers to a schedule or process for changing the key material. oblivious-ram× 2 a useful primitive that allows a client to hide its data access patterns from an untrusted server in storage outsourcing applications. miyaguchi-preneel× 2 The Miyaguchi-Preneel scheme, based on a one-way compression function, was proposed around 1989 by Preneel, and independently by Miyaguchi.Ohta, and Iwata. 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 … hybrid× 2 Something of mixed origin. In cryptography, typically a cipher system containing both public key and secret key component ciphers, where the public key system is used only to transport the key for the… frequency-analysis× 2 the study of letters or groups of letters contained in a ciphertext in an attempt to partially reveal the message. hashed-elgamal× 2 hermitian-curves× 2 ephemeral× 2 short-lived, like (for example) an ephemeral key, which is a key that only exists within the lifetime of a communication session. double-encryption× 2 the process of encrypting a message multiple times, either using the same or a different algorithm. cpu× 2 the most important hardware component of a computer system, since it contains the circuitry necessary to interpret and execute instructions. congruence× 2 If two numbers $b$ and $c$ have the property that their difference $b-c$ is integrally divisible by a number $m$ (i.e., $(b-c)/m$ is an integer), then $b$ and $c$ are said to be "congruent modulo $m$.… cramer-shoup Cramer-Shoup asymmetric encryption (an extension of ElGamal) crl one of two common methods when using a public key infrastructure for maintaining access to servers in a network. cryptoapi The Cryptographic Application Programming Interface is an application programming interface included with Microsoft Windows operating systems that provides services to enable developers to secure Wind… acoustic-cryptanalysis a type of side channel attack which exploits sounds emitted by computers or machines. access-control a possible goal of cryptography, where the idea is to restrict access to documents, equipment, locations, or keys to individuals who are authorized such access. ecies Elliptic Curve Integrated Encryption Scheme (ECIES) is a public key encryption system proposed by Victor Shoup in 2001. homomorphic-signatures A homomorphic signature scheme (also malleable signature scheme) is a digital signature scheme that allows computations on signed data (without access to the secret signing key) while preserving the… hamming a family of binary, linear error-correcting codes that are used to detect and correct data transmission errors. Hamming codes are able detect up to two simultaneous bit errors and ca… 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 … pbkdf a Password Based Key Derivation Function, which can be used to derive key data or derive a "password hash" from a salt and password. md2 RFC 1319 — The MD2 Message-Digest Algorithm is a cryptographic hash function which is no longer considered secure. meta-cryptography 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… sha-3-competition SHA-3 Competition (2007-2012) was a competition initiated by NIST as a call for a new cryptographic hash algorithm for standardization purposes. rc6 a 128-bit block cipher, formerly an AES candidate, that makes heavy use of data-dependent rotations.