# 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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 chacha× 4 a falimy of stream ciphers proposed by Daniel J. Bernstein, as an evolution of Salsa20 with (conjecturally) improved resistance to cryptanalysis. cryptdb× 4 an SQL-Aware encrypted database system from MIT bijection× 4 a function $f$ from a set $X$ to a set $Y$ with the property that, for every $y$ in $Y$, there is exactly one $x$ in $X$ such that $f(x) = y$. It follows from … access-control× 4 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× 4 Elliptic Curve Integrated Encryption Scheme (ECIES) is a public key encryption system proposed by Victor Shoup in 2001. dpa× 4 homomorphic-signatures× 4 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× 4 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… theory× 4 tea× 4 a block cipher by David Wheeler and Roger Needham of the Cambridge Computer Laboratory; notable for its simplicity of description and implementation. three-pass-protocol× 4 The three-pass protocol uses commutative encryption to let two people communicate privately without having to exchange keys in advance. traffic-analysis× 3 the process of intercepting and examining messages in order to deduce information from patterns in communication. Within cryptography this definition is restricted to deduce inform… truecrypt× 3 A famous program that was the de-facto standard for open-source disk encryption for many years. It was discontinued on 28 may 2014. TrueCrypt has undergone some security audits which haven't found sev… speck× 3 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. smartcard× 3 s-des× 3 a toy variant of the DES cipher introduced by Edward F. Schaefer in 1996 for educational purposes. It has an 8-bit block size and a 10-bit key, and uses two rounds, with two 4x2 bit … u-prove× 3 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… universal-re-encryption× 3 unicity-distance× 3 the average amount of ciphertext a computationally unlimited attacker needs to obtain in order to uniquely determine the correct decryption. feal× 3 a block cipher designed by NTT. It is known to be insecure. diffusion× 3 Diffusion refers to the property of an encryption primitive that small changes in the plaintext result in big changes in the ciphertext and vice-versa. cramer-shoup× 3 Cramer-Shoup asymmetric encryption (an extension of ElGamal) ephemeral× 3 short-lived, like (for example) an ephemeral key, which is a key that only exists within the lifetime of a communication session. alternating-step× 3 a cryptographic pseudorandom number generator intended to be used in a stream cipher. biclique-attack× 3 cryptoapi× 3 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… kbkdf× 3 a key derivation function ([tag:kdf]) that uses a key in the computation. logjam× 3 An attack on TLS and related protocols as of may 2015. This attack uses pre-computations to attack short prime diffie hellmann key exchange, primes with up to 1024 bits length are considered broken. I… memory-hard× 3 a property that, if proven to be possesed, makes an algorithm "immune" to time-memory tradeoffs, by "punishing" memory reductions. Usually algorithms possesing this property can't e… mixnets× 3 routing protocols that create hard-to-trace communications by using a chain of proxy servers known as mixes which take in messages from multiple senders, shuffle them, and send them b… ransomware× 3 p1363× 3 a set of public key cryptography standards provided by the IEEE. onion-routing× 3 A method for anonymous communications over a wide area network such as the Internet. pkcs8× 3 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://… plausible-deniability× 3 Plausible deniability may refer $1)$ to deniable encryption schemes allowing to decrypt a ciphertext for a message $m$ to some distinct message $m'$ or $2)$ to a feature provided by deniable file syst… pir× 3 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.