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:
× 3
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…
× 6
The International Data Encryption Algorithm (IDEA) is a block cipher developed in 1991 by James Massey and Xuejia Lai.
× 24
In identity-based encryption (IBE) the public key of a user $A$ is some identity string $ID_A$, e.g., an email address. To encrypt a message for this user there is no need to retrieve an authentic cop…
× 161
the process of taking it from its mathematical or algorithmic description and producing a working version, often in computer software or hardware. This tag should …
× 18
definition used in cryptography to describe: indistinguishability under (non-adaptive) chosen ciphertext attack (IND-CCA1), and indistinguishability under adaptive chosen ciphertext attack …
× 6
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…
× 5
concerned with sending messages via electronic signals in the most efficient and error-free way.
× 109
Random data used by block cipher modes of operation to randomize the output in order to achieve semantic security. Also for other similar constructs in other iterative algorithms.
× 34
In a cryptographic sense, integrity means unimpaired and complete.
× 7
× 39
an object-oriented programming language. Java programs are compiled to bytecode and run in a virtual machine (JVM). Java should not be confused with JavaScript; JavaScript is an entirely diff…
× 19
a dynamic, object-oriented, prototype-based, weakly typed language commonly used for scripting in web browsers. Despite the name, it is unrelated to the Java programming language and sha…
× 3
a key derivation function ([tag:kdf]) that uses a key in the computation.
× 8
A “Key Derivation Function” (KDF) derives one or more secret keys from a secret value such as a master key or other known information such as a password using a pseudo-random function.
× 24
a cryptographic hash function designed by Guido Bertoni, Joan Daemen, Michaël Peeters, and Gilles Van Assche.
× 4
× 124
In cryptography, a key derivation function (or KDF) derives one or more secret keys from a secret value such as a master key or other known information such as a password or passphrase using a pseudo-…
× 11 × 4 × 143
Key exchange protocols allow two parties to produce a secret session key over a public channel.
× 11
the process of generating keys for cryptographic purposes.
× 4
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.
× 34
Using the same key for more than one purpose, e.g. to encrypt two messages or to encrypt and authenticate a message. Some cryptosystems may be vulnerable to attacks if keys are inappropriately reused.
× 3
Key rotation refers to a schedule or process for changing the key material.
× 199
usually secret information used as input to various kinds of cryptographic algorithms, like encryption, signature, MAC, to select the concrete transformation done by the algorithm.
× 8
an algorithm that expands a relatively short master key to a relatively large expanded key for later use in an encryption and decryption algorithm.
× 70
the size measured in bits of the key used in a cryptographic algorithm.
× 5 × 5
the problem of determining which numbers from a given collection of numbers have been added together to yield a specific sum: used in cryptography to encipher (and sometimes decipher) mess…
× 68
The attacker knows at least one sample of both the plain text and the cipher text.
× 16 × 15
A length extension attack on a hash or message authentication code function, which allows extra information to be added to the input message without changing the output value.