About: Plaintext-aware encryption

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Plaintext-awareness is a notion of security for public-key encryption. A cryptosystem is plaintext-aware if it is difficult for any efficient algorithm to come up with a valid ciphertext without being aware of the corresponding plaintext. In fact, plaintext-awareness is a very strong property. Any cryptosystem that is semantically secure and is plaintext-aware is actually secure against a chosen-ciphertext attack, since any adversary that chooses ciphertexts would already know the plaintexts associated with them.

Attributes	Values
rdf:type	country
rdfs:label	Plaintext-aware encryption (en)
rdfs:comment	Plaintext-awareness is a notion of security for public-key encryption. A cryptosystem is plaintext-aware if it is difficult for any efficient algorithm to come up with a valid ciphertext without being aware of the corresponding plaintext. In fact, plaintext-awareness is a very strong property. Any cryptosystem that is semantically secure and is plaintext-aware is actually secure against a chosen-ciphertext attack, since any adversary that chooses ciphertexts would already know the plaintexts associated with them. (en)
dcterms:subject	Theory of cryptography
Wikipage page ID	3790487 (xsd:integer)
Wikipage revision ID	675445534 (xsd:integer)
Link from a Wikipage to another Wikipage	Encryption Topics in cryptography Algorithm Public-key encryption Mihir Bellare Plaintext Optimal Asymmetric Encryption Padding Modular arithmetic Cryptosystem Chosen-ciphertext attack Semantic security Diffie-Hellman Theory of cryptography Phillip Rogaway Ciphertext RSA (algorithm) Random oracle Cramer-Shoup system
sameAs	Plaintext-aware encryption Plaintext-aware encryption Plaintext-aware encryption
has abstract	Plaintext-awareness is a notion of security for public-key encryption. A cryptosystem is plaintext-aware if it is difficult for any efficient algorithm to come up with a valid ciphertext without being aware of the corresponding plaintext. From a lay point of view, this is a strange property. Normally, a ciphertext is computed by encrypting a plaintext. If a ciphertext is created this way, its creator would be aware, in some sense, of the plaintext. However, many cryptosystems are not plaintext-aware. As an example, consider the RSA cryptosystem without padding. In the RSA cryptosystem, plaintexts and ciphertexts are both values modulo N (the modulus). Therefore, RSA is not plaintext aware: one way of generating a ciphertext without knowing the plaintext is to simply choose a random number modulo N. In fact, plaintext-awareness is a very strong property. Any cryptosystem that is semantically secure and is plaintext-aware is actually secure against a chosen-ciphertext attack, since any adversary that chooses ciphertexts would already know the plaintexts associated with them. (en)
gold:hypernym	Notion
prov:wasDerivedFrom	wikipedia-en:Plaintext-aware_encryption?oldid=675445534&ns=0
page length (characters) of wiki page	3664 (xsd:nonNegativeInteger)
foaf:isPrimaryTopicOf	wikipedia-en:Plaintext-aware_encryption
is Link from a Wikipage to another Wikipage of	Index of cryptography articles Optimal asymmetric encryption padding Plaintext-awareness Plaintext aware Plaintext awareness
is Wikipage redirect of	Plaintext-awareness Plaintext aware Plaintext awareness
is foaf:primaryTopic of	wikipedia-en:Plaintext-aware_encryption

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