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- ...her]] that uses only linear operations, an attacker can just plug in known plaintext/ciphertext pairs until there are at least as many equations as variables, t ...ing one output bit in terms of 64 inputs and 128 key bits. Plug in a known plaintext/ciphertext pair and only the key bits remain as variables. He has 64 equati6 KB (882 words) - 05:49, 8 April 2024
- ...cal keys used for a short period of time or a certain number of units of [[plaintext]]. ...Only an authorized user in possession of the decryption key can access the plaintext protected by the cryptosystem. For bilateral communications, there must be3 KB (523 words) - 05:49, 8 April 2024
- Ciphers apply an algorithm and a [[cryptographic key]] to [[plaintext]] in the form of digitally encoded information; the process of encryption i ...lationship between plaintext and ciphertext. Padding that was mistaken for plaintext has changed the course of [[World War II, Pacific#Center: Action off Samar|12 KB (1,744 words) - 05:48, 8 April 2024
- ...th only an 8 bit block size. Assume the enemy is able to get or guess some plaintext; he makes a little table, his own "code book" showing which ciphertext bloc ...equations and solve for the key), a code book attack (collect all possible plaintext/ciphertext pairs) will ''in theory break any block cipher''. However, all o6 KB (1,064 words) - 02:04, 24 January 2017
- == Known plaintext == ..."he may read messages he is not supposed to see", does that include known plaintext? [[User:Howard C. Berkowitz|Howard C. Berkowitz]] 14:36, 16 April 2009 (UTC8 KB (1,286 words) - 14:38, 18 March 2024
- ...er attacks this might open up. For example, can the adversary use a chosen plaintext attack, deliberately posting news articles which, when we receive and encry6 KB (943 words) - 05:48, 8 April 2024
- ...cker can quickly immediately eliminate most candidate keys if he knows the plaintext is ASCII. If each block has n bytes, only one key out of 2<sup>8*n</sup> wi11 KB (1,819 words) - 05:48, 8 April 2024
- ...eptible to a [[related-key attack]] which requires 2<sup>23</sup> [[chosen plaintext]]s under a related-key pair, with 2<sup>32</sup> time complexity3 KB (367 words) - 05:49, 8 April 2024
- ...' output. For decryption, the process is reversed to turn ciphertext into plaintext, but decryption need not use the same key(s) or algorithms for decryption a ...e that some piece of information could be generated only from the original plaintext. See [[one-way encryption]] for the techniques; some applications are prese12 KB (1,872 words) - 06:17, 16 December 2008
- Encrypted voice is a problem unless the SBC is trusted to encrypt, examine plaintext, and encrypt in a new cryptosystem.3 KB (383 words) - 05:48, 8 April 2024
- * [[code book attack]] — collect all possible plaintext/ciphertext pairs for a [[block cipher]], or the entire pseudorandom stream3 KB (440 words) - 05:49, 8 April 2024
- ...ber, that has sufficient physical protection that it is trusted to carry [[plaintext|unencrypted]] [[classified information]]. A PDS is compliant with what the3 KB (421 words) - 05:48, 8 April 2024
- ...substitution cipher was the [[Caesar cipher]], in which each letter in the plaintext was replaced by a letter some fixed number of positions further down the al ...year 1467, in which different parts of the message (often each successive plaintext letter) are enciphered using a different key. In the polyalphabetic [[Vigen9 KB (1,312 words) - 05:49, 8 April 2024
- ...ryptographic algorithm, introduces or removes the concealment applied to [[plaintext]] or taken to [[ciphertext]]. This discussion deals with the nature of keys4 KB (564 words) - 23:12, 4 February 2010
- * [[code book attack]] — collect all possible plaintext/ciphertext pairs for a [[block cipher]], or the entire pseudorandom stream ...r, they require large numbers of [[#Known plaintext | known]] or [[#Chosen plaintext | chosen]] plaintexts, all encrypted with the same key. Re-keying often eno32 KB (4,913 words) - 14:38, 18 March 2024
- * [[code book attack]] — collect all possible plaintext/ciphertext pairs for a [[block cipher]], or the entire pseudorandom stream ...r, they require large numbers of [[#Known plaintext | known]] or [[#Chosen plaintext | chosen]] plaintexts, all encrypted with the same key. Re-keying often eno32 KB (4,916 words) - 05:49, 8 April 2024
- ...oyed. Computer implementations typically use exclusive-or (XOR) to combine plaintext and pad bit-by-bit. ...am cipher]], obtaining U.S. Patent 1,310,719 on a device that took key and plaintext on paper tape in Baudot code and combined them with exclusive OR to produce12 KB (1,878 words) - 05:48, 8 April 2024
- ...m data, then reverse the combining operation to convert ciphertext back to plaintext. ...make such inferences, that would reveal information on other parts of the plaintext. It should be effectively impossible for an enemy — even with a huge24 KB (3,851 words) - 05:49, 8 April 2024
- ...although it definitely needs context, such as an article that covers known plaintext as opposed to other methods. As you said, you are thinking "bottom up", as4 KB (694 words) - 23:24, 1 March 2010
- ==== newsletter-plaintext ====20 KB (2,697 words) - 11:23, 30 January 2009