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ciphertext message

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  • Ciphertext indistinguishability — is a property of many encryption schemes. Intuitively, if a cryptosystem possesses the property of indistinguishability, then an adversary will be unable to distinguish pairs of ciphertexts based on the message they encrypt. The property of… …   Wikipedia

  • Ciphertext — The Zimmermann Telegram (as it was sent from Washington to Mexico) encrypted as ciphertext. This article is about encrypted information. For an overview of cryptographic technology in general, see Cryptography. In cryptography, ciphertext (or… …   Wikipedia

  • Ciphertext stealing — In cryptography, ciphertext stealing (CTS) is a general method of using a block cipher mode of operation that allows for processing of messages that are not evenly divisible into blocks without resulting in any expansion of the ciphertext, at the …   Wikipedia

  • Ciphertext expansion — In cryptography, the term ciphertext expansion refers to the length increase of a message when it is encrypted. Many modern cryptosystems cause some degree of expansion during the encryption process, for instance when the resulting ciphertext… …   Wikipedia

  • Ciphertext-only attack — In cryptography, a ciphertext only attack (COA) or known ciphertext attack is an attack model for cryptanalysis where the attacker is assumed to have access only to a set of ciphertexts. The attack is completely successful if the corresponding… …   Wikipedia

  • ciphertext — ˈ ̷ ̷ ̷ ̷ˌ ̷ ̷ noun : the cipher form of a text or of its elements this message looks like ciphertext in the Playfair scheme no ciphertext J is possible compare plaintext; c III 4 * * * /suy feuhr tekst /, n. the encoded version of a message or… …   Useful english dictionary

  • ciphertext — /suy feuhr tekst /, n. the encoded version of a message or other text; cryptogram. Cf. plain text. [1935 40; CIPHER + TEXT] * * * …   Universalium

  • ciphertext — n. coded message that is sent to an addressee who has the key for decoding (Computers) …   English contemporary dictionary

  • ciphertext — ci•pher•text [[t]ˈsaɪ fərˌtɛkst[/t]] n. crp the encoded version of a message or other text, as opposed to the plaintext • Etymology: 1935–40 …   From formal English to slang

  • Chosen-ciphertext attack — A chosen ciphertext attack (CCA) is an attack model for cryptanalysis in which the cryptanalyst gathers information, at least in part, by choosing a ciphertext and obtaining its decryption under an unknown key. In the attack, an adversary has a… …   Wikipedia

  • 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 number of ciphertexts to be decrypted, then uses the results of these decryptions to select subsequent… …   Wikipedia

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