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- Semantic_security abstract "In cryptography, a cryptosystem is semantically secure if any probabilistic, polynomial-time algorithm (PPTA) that is given the ciphertext of a certain message (taken from any distribution of messages), and the message's length, cannot determine any partial information on the message with probability non-negligibly higher than all other PPTA's that only have access to the message length (and not the ciphertext). In other words, knowledge of the ciphertext (and length) of some unknown message does not reveal any additional information on the message that can be feasibly extracted. This concept is the computational complexity analogue to Shannon's concept of perfect secrecy. Perfect secrecy means that the ciphertext reveals no information at all about the plaintext, whereas semantic security implies that any information revealed cannot be feasibly extracted.".
- Semantic_security wikiPageID "960585".
- Semantic_security wikiPageRevisionID "603961538".
- Semantic_security hasPhotoCollection Semantic_security.
- Semantic_security subject Category:Theory_of_cryptography.
- Semantic_security comment "In cryptography, a cryptosystem is semantically secure if any probabilistic, polynomial-time algorithm (PPTA) that is given the ciphertext of a certain message (taken from any distribution of messages), and the message's length, cannot determine any partial information on the message with probability non-negligibly higher than all other PPTA's that only have access to the message length (and not the ciphertext).".
- Semantic_security label "Semantic security".
- Semantic_security label "Sicurezza semantica".
- Semantic_security label "Sécurité sémantique".
- Semantic_security label "语义安全".
- Semantic_security sameAs Sécurité_sémantique.
- Semantic_security sameAs Sicurezza_semantica.
- Semantic_security sameAs m.03tkw4.
- Semantic_security sameAs Q2333581.
- Semantic_security sameAs Q2333581.
- Semantic_security wasDerivedFrom Semantic_security?oldid=603961538.
- Semantic_security isPrimaryTopicOf Semantic_security.