# 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.

 Type to find tags:
 quadratic-residuosity× 12 A residue of order 2. A number $a$ for which the congruence $x^2 ≡ a \pmod m$ has a solution is called a quadratic residue modulo $m$. hardness-assumptions× 12 verifiability× 12 white-box× 12 In cryptography, white box analysis means extracting a secret value from an implementation of a function that uses the value. eax× 11 An authenticated encryption mode of operation for a block cipher, based on the CTR mode and the OMAC/CMAC MAC algorithm. digital-cash× 11 Money that may be transferred electronically from one party to another during a transaction. blinding× 11 Technique mainly employed for factorization based cryptosystems to hide information. Usually blinding involves using a multiplicative homomorphic property of the cipher, it may be used to realize blin… blum-blum-shub× 11 a deterministic Pseudo-Random Bit Generator with security demonstrably reducible to that of integer factorization. broadcast-encryption× 11 arithmetic× 11 a branch of mathematics usually concerned with the four operations (adding, subtracting, multiplication and division) of positive numbers. coding-theory× 11 Coding theory studies the properties of codes and their fitness for specific applications, and typically involves the removal of redundancy and the detection and/or correction of errors in transmitted… chacha× 11 a family of stream ciphers proposed by Daniel J. Bernstein, as an evolution of Salsa20 with (conjecturally) improved resistance to cryptanalysis. ccm× 11 The Counter with CBC Mac mode, an authenticated encryption mode of operation for a block cipher based on the CTR mode and the CBC-MAC algorithm. . playfair× 11 a digraph substitution cipher. It employs a table where one letter of the alphabet is omitted, and the letters are arranged in a 5x5 grid. private-set-intersection× 11 In a private set intersection (PSI) protocol two parties jointly compute the intersection of their private input sets. matrix-multiplication× 10 Matrix multiplication indicates a row-by-column multiplication, where the entries in the Xth row of A are multiplied by the corresponding entries in the Yth column of B and then adding the results. information-theory× 10 concerned with sending messages via electronic signals in the most efficient and error-free way. cms× 10 an acronym for the Cryptographic Message Syntax, as defined in RFC5652 convergent-encryption× 10 Convergent encryption, also known as content hash keying, is simply encrypting a file using a symmetric encryption key which is the secure hash of the plaintext of the file. decryption-oracle× 10 software-obfuscation× 10 the deliberate act of creating obfuscated code by making source or machine code difficult to understand from a human point of view. tweakable-cipher× 9 a family of permutations where the key selects a particular permutation from that family. With a tweakable blockcipher both key and tweak are used to select a permutation. So tweak a… universal-hash× 9 adversarial-model× 9 An adversary model formally defines the power of the adversary. It includes specifics whether the adversary is deterministic/randomized, uniform/non-uniform, interactive/non-interactive and how he int… avalanche× 9 evident if, when an input is changed slightly (for example, flipping a single bit) the output changes significantly (e.g., half the output bits flip). constants× 9 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. function-evaluation× 9 Calculating the value of a function for given inputs, especially, in the context of secure multi-party computation and/or homomorphic encryption, without disclosing the inputs to some or all parties c… fiat-shamir× 9 ipsec× 9 multi-prime-rsa× 9 the product of more than two primes. host-proof× 8 "host-proof" means that no unencrypted or insecure data is stored on the server or passed over the network. index-of-coincidence× 8 a measure of the relative frequency of letters in a cipher text sample, which facilitates cryptanalysis of poly-alphabetic ciphers by allowing determination of the per… license-key× 8 a typically short alphanumeric code used as a software copy-protection mechanism, by requiring a user to enter a valid key before they can use the software. fortuna× 8 a family of cryptographically secure PRNGs; devised by Bruce Schneier and Niels Ferguson, who published it in 2003. distributed-decryption× 8 elliptic-curve-generation× 8