Ciphertext expansion
Ciphertext expansion The term ciphertext expansion refers to the length increase of ... encryption process, for instance when the resulting ciphertext must include a message-unique Initialization Vector (IV). Probabilistic encryption schemes cause ciphertext expansion, as the set of possible ciphertexts ... thousands of times longer than the plaintext. Ciphertext expansion may be offset or increased ...
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Ciphertext indistinguishability
Ciphertext indistinguishability Ciphertext indistinguishability is an important security property of ... some schemes also provide indistinguishability under chosen ciphertext attack and adaptive chosen ciphertext attack. Indistinguishability under chosen plaintext attack is ... adversary can succeed in distinguishing the chosen ciphertext with a probability significantly greater than ...
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Ciphertext stealing
Ciphertext stealing In cryptography, ciphertext stealing (CTS) is a general method of ... without resulting in any expansion of the ciphertext, at the cost of significantly increased complexity. General characteristics Ciphertext stealing is the technique of altering processing ... transmission of the last two blocks of ciphertext and no ciphertext expansion (i.e., ...
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Chosen-ciphertext attack
Chosen-ciphertext attack A chosen-ciphertext attack (CCA) is an attack model for ... cryptanalysis in which the cryptanalyst chooses a ciphertext and causes it to be decrypted with ... confidentiality of an encryption scheme. However, chosen-ciphertext attacks can have more significant implications for ... analyzing the decrypted results. A successful chosen-ciphertext attack may compromise the security of ...
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Talk:Ciphertext stealing
Talk:Ciphertext stealing Talk:Ciphertext stealing
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Ciphertext-only attack
Ciphertext-only attack In cryptography, a ciphertext-only attack (COA) is an attack model ... For example, if an adversary is sending ciphertext continuously to maintain traffic-flow security, it ... alone. Cryptographers developed statistical techniques for attacking ciphertext, such as frequency analysis. Mechanical encryption devices ... cryptographers were able to mount a successful ciphertext-only cryptanalysis of the Enigma by ...
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Indifferent chosen-ciphertext attack
Indifferent chosen-ciphertext attack An indifferent chosen-ciphertext attack (CCA 1 ), also known as a non-adaptive chosen-ciphertext attack, is a type of chosen-ciphertext attack. It is to be distinguished from the adaptive-chosen-ciphertext attack (CCA 2 ).
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Adaptive chosen-ciphertext attack
Adaptive chosen-ciphertext attack An adaptive-chosen-ciphertext attack (abbreviated as CCA2) is an interactive form of chosen-ciphertext attack in which an attacker sends a ... to be distinguished from an indifferent-chosen-ciphertext attack (CCA1). The goal of this attack ... only when they have the property of ciphertext malleability — that is, a ciphertext ...
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Talk:Adaptive chosen-ciphertext attack
Talk:Adaptive chosen-ciphertext attack "Unlike ad-hoc schemes such as ...
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Adaptive chosen plaintext and chosen ciphertext attack
Adaptive chosen plaintext and chosen ciphertext attack In cryptography, an adaptive chosen plaintext attack and chosen ciphertext attack is one in which the attacker ... adaptive chosen plaintext and an adaptive chosen ciphertext attack. The scenario is one which presumes ... Related-key attack Chosen plaintext attack Chosen ciphertext attack Ciphertext-only attack
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