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a function that is easy to perform one way, but has a secret that is required to perform the inverse calculation efficiently.
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In cryptography, white box analysis means extracting a secret value from an implementation of a function that uses the value.
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A type of monoalphabetic substitution cipher, wherein each letter in an alphabet is mapped to its numeric equivalent, encrypted using a simple function `(ax + b) mod m`.
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a computer system with a dedicated function within a larger mechanical or electrical system, often with real-time computing constraints.
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In cryptanalysis and computer security, a dictionary attack is a technique for defeating a cipher or authentication mechanism by trying to determine its decryption key or pass-phrase by trying hundred…
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concerned with sending messages via electronic signals in the most efficient and error-free way.
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the assurance that someone cannot deny something.
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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…
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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…
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a language that defines the way data is sent across dissimilar communication systems.
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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).
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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. .
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Wi-Fi Protected Access 2 - Pre-Shared Key (also called WPA or WPA2 Personal) is a method of securing your network using WPA2 with the use of the optional Pre-Shared Key (PSK) authentication, which was…
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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…
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a branch of mathematics usually concerned with the four operations (adding, subtracting, multiplication and division) of positive numbers.
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a symmetric cipher. In number theory, the Pohlig–Hellman algorithm sometimes is a special-purpose algorithm for computing discrete logarithms in a multiplicative gro…
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In a private set intersection (PSI) protocol two parties jointly compute the intersection of their private input sets.
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A means of recovering cryptographic keys when the usual means for obtaining them is unavailable.; the ability to uncover the secret key to a cryptographic message.
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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…
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used in Secure Multiparty Computation
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Money that may be transferred electronically from one party to another during a transaction.
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An authenticated encryption mode of operation for a block cipher, based on the CTR mode and the OMAC/CMAC MAC algorithm.
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an acronym for the Cryptographic Message Syntax, as defined in RFC5652
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a deterministic Pseudo-Random Bit Generator with security demonstrably reducible to that of integer factorization.
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Transport security about establishing a real time secure channel from a sender to a receiver. Transport security generally requires more protection and a more intricate protocol than securing data at …
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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…
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the deliberate act of creating obfuscated code by making source or machine code difficult to understand from a human point of view.
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a two-pass AEAD block cipher mode of operation described in RFC 5297. It can be used either for key-wrap (nonce-less deterministic authenticated encryption) or…
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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.
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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.
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a family of cryptographically secure PRNGs; devised by Bruce Schneier and Niels Ferguson, who published it in 2003.
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