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Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Cellular_Message_Encryption_Algorithm> ?p ?o }

• Cellular_Message_Encryption_Algorithm abstract "In cryptography, the Cellular Message Encryption Algorithm (CMEA) is a block cipher which was used for securing mobile phones in the United States. CMEA is one of four cryptographic primitives specified in a Telecommunications Industry Association (TIA) standard, and is designed to encrypt the control channel, rather than the voice data. In 1997, a group of cryptographers published attacks on the cipher showing it had several weaknesses which give it a trivial effective strength of a 24-bit to 32-bit cipher.Some accusations were made that the NSA had pressured the original designers into crippling CMEA, but the NSA has denied any role in the design or selection of the algorithm. The ECMEA and SCEMA ciphers are derived from CMEA.CMEA is described in U.S. Patent 5,159,634. It is byte-oriented, with variable block size, typically 2 to 6 bytes. The key size is only 64 bits. Both of these are unusually small for a modern cipher. The algorithm consists of only 3 passes over the data: a non-linear left-to-right diffusion operation, an unkeyed linear mixing, and another non-linear diffusion that is in fact the inverse of the first. The non-linear operations use a keyed lookup table called the T-box, which uses an unkeyed lookup table called the CaveTable. The algorithm is self-inverse; re-encrypting the ciphertext with the same key is equivalent to decrypting it.CMEA is severely insecure. There is a chosen-plaintext attack, effective for all block sizes, using 338 chosen plaintexts. For 3-byte blocks (typically used to encrypt each dialled digit), there is a known-plaintext attack using 40 to 80 known plaintexts. For 2-byte blocks, 4 known plaintexts suffice.The \"improved\" CMEA, CMEA-I, is not much better: chosen-plaintext attack of it requires less than 850 plaintexts in its adaptive version.".
• Cellular_Message_Encryption_Algorithm wikiPageExternalLink paper10.html.
• Cellular_Message_Encryption_Algorithm wikiPageExternalLink cmea.html.
• Cellular_Message_Encryption_Algorithm wikiPageExternalLink New_Digital.htm.
• Cellular_Message_Encryption_Algorithm wikiPageID "662990".
• Cellular_Message_Encryption_Algorithm wikiPageLength "3786".
• Cellular_Message_Encryption_Algorithm wikiPageOutDegree "22".
• Cellular_Message_Encryption_Algorithm wikiPageRevisionID "622993539".
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink 1.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Block_cipher.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Block_size_(cryptography).
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Byte-oriented_protocol.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Category:Broken_block_ciphers.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Cellular_Authentication_and_Voice_Encryption.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Chosen-plaintext_attack.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Cipher.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Cryptography.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink ECMEA.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Encryption.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink GSM.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink James_A._Reeds_III.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Key_size.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Known-plaintext_attack.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Lookup_table.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Mobile_phone.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink National_Security_Agency.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink ORYX_(encryption_algorithm).
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink SCEMA.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink Telecommunications_Industry_Association.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLink United_States.
• Cellular_Message_Encryption_Algorithm wikiPageWikiLinkText "CMEA".
• Cellular_Message_Encryption_Algorithm wikiPageWikiLinkText "Cellular Message Encryption Algorithm".
• Cellular_Message_Encryption_Algorithm blockSize "16".
• Cellular_Message_Encryption_Algorithm cryptanalysis "338".
• Cellular_Message_Encryption_Algorithm designers James_A._Reeds_III.
• Cellular_Message_Encryption_Algorithm keySize "64".
• Cellular_Message_Encryption_Algorithm name "CMEA".
• Cellular_Message_Encryption_Algorithm publishDate "1991".
• Cellular_Message_Encryption_Algorithm rounds "3".
• Cellular_Message_Encryption_Algorithm wikiPageUsesTemplate Template:Cryptography_navbox.
• Cellular_Message_Encryption_Algorithm wikiPageUsesTemplate Template:Infobox_block_cipher.
• Cellular_Message_Encryption_Algorithm wikiPageUsesTemplate Template:Reflist.
• Cellular_Message_Encryption_Algorithm wikiPageUsesTemplate Template:US_patent.
• Cellular_Message_Encryption_Algorithm subject Category:Broken_block_ciphers.
• Cellular_Message_Encryption_Algorithm hypernym Cipher.
• Cellular_Message_Encryption_Algorithm type Noble.
• Cellular_Message_Encryption_Algorithm type Algorithm.
• Cellular_Message_Encryption_Algorithm comment "In cryptography, the Cellular Message Encryption Algorithm (CMEA) is a block cipher which was used for securing mobile phones in the United States. CMEA is one of four cryptographic primitives specified in a Telecommunications Industry Association (TIA) standard, and is designed to encrypt the control channel, rather than the voice data.".
• Cellular_Message_Encryption_Algorithm label "Cellular Message Encryption Algorithm".
• Cellular_Message_Encryption_Algorithm sameAs Q338574.
• Cellular_Message_Encryption_Algorithm sameAs CMEA.
• Cellular_Message_Encryption_Algorithm sameAs CMEA_(cryptographie).
• Cellular_Message_Encryption_Algorithm sameAs Cellular_Message_Encryption_Algorithm.
• Cellular_Message_Encryption_Algorithm sameAs m.030t6j.
• Cellular_Message_Encryption_Algorithm sameAs Q338574.
• Cellular_Message_Encryption_Algorithm wasDerivedFrom Cellular_Message_Encryption_Algorithm?oldid=622993539.
• Cellular_Message_Encryption_Algorithm isPrimaryTopicOf Cellular_Message_Encryption_Algorithm.