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- hoe het woord wordt gebruikt
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- Gebruiksvoorbeelden (meerdere zinnen met vertaling)
- etymologie
Wat (wie) is chosen-signature attack - definitie
CRYPTANALYTIC ATTACK MODEL IN WHICH THE ATTACKER CAN OBTAIN THE CIPHERTEXTS FOR ARBITRARY PLAINTEXTS
Chosen plaintext; Chosen-text attack; Chosen-plaintext; Adaptive chosen-plaintext attack; Adaptive chosen plaintext attack; Chosen plaintext attack; Chosen plaintexts; Plaintext injection; Known-plaintext injection; Known plaintext injection
Metric signature
MATHEMATICAL CONCEPT
Signature change; Signature (physics); Euclidean signature; +---; -+++; Lorentz signature; Mostly Plus; Mostly Minus; Signature of the metric
In mathematics, the signature of a metric tensor g (or equivalently, a real quadratic form thought of as a real symmetric bilinear form on a finite-dimensional vector space) is the number (counted with multiplicity) of positive, negative and zero eigenvalues of the real symmetric matrix of the metric tensor with respect to a basis. In relativistic physics, the v represents the time or virtual dimension, and the p for the space and physical dimension.
Chosen-ciphertext attack
CRYPTANALYTIC ATTACK MODEL WHERE THE ATTACKER GATHERS INFORMATION BY OBTAINING THE DECRYPTIONS OF CHOSEN CIPHERTEXTS.
Lunchtime attack; Chosen ciphertext attack; Indifferent chosen-ciphertext attack; Indifferent chosen ciphertext attack; Non-adaptive chosen-ciphertext attack; Non-adaptive chosen ciphertext attack; Indifferent-chosen-ciphertext attack; CCA-1; Chosen ciphertext; Chosen-ciphertext
A chosen-ciphertext attack (CCA) is an attack model for cryptanalysis where the cryptanalyst can gather information by obtaining the decryptions of chosen ciphertexts. From these pieces of information the adversary can attempt to recover the hidden secret key used for decryption.
Adaptive chosen-ciphertext attack
INTERACTIVE FORM OF CHOSEN-CIPHERTEXT ATTACK IN WHICH AN ATTACKER FIRST SENDS SOME CIPHERTEXTS TO BE DECRYPTED CHOSEN ADAPTIVELY AND THEN USES THE RESULTS TO DISTINGUISH A TARGET CIPHERTEXT WITHOUT CONSULTING THE ORACLE ON THE CHALLENGE CIPHERTEXT
Adaptive chosen plaintext and chosen ciphertext attack; Adaptive chosen ciphertext attack; Adaptive-chosen-ciphertext attack; CCA-2; Bleichenbacher’s attack
An adaptive chosen-ciphertext attack (abbreviated as CCA2) is an interactive form of chosen-ciphertext attack in which an attacker first sends a number of ciphertexts to be decrypted chosen adaptively, and then uses the results to distinguish a target ciphertext without consulting the oracle on the challenge ciphertext. In an adaptive attack, the attacker is further allowed adaptive queries to be asked after the target is revealed (but the target query is disallowed).
Wikipedia
Chosen-plaintext attack
A chosen-plaintext attack (CPA) is an attack model for cryptanalysis which presumes that the attacker can obtain the ciphertexts for arbitrary plaintexts. The goal of the attack is to gain information that reduces the security of the encryption scheme.
Modern ciphers aim to provide semantic security, also known as ciphertext indistinguishability under chosen-plaintext attack, and they are therefore, by design, generally immune to chosen-plaintext attacks if correctly implemented.
