13 relations: Block cipher, Boolean function, Ciphertext, Confusion and diffusion, Cryptography, Methodology, Nothing up my sleeve number, Permutation, Plaintext, Portable Document Format, S-box, Substitution cipher, Transposition cipher.
In cryptography, a block cipher is a deterministic algorithm operating on fixed-length groups of bits, called blocks, with an unvarying transformation that is specified by a symmetric key.
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In mathematics and logic, a (finitary) Boolean function (or switching function) is a function of the form ƒ: Bk → B, where B.
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In cryptography, ciphertext (or cyphertext) is the result of encryption performed on plaintext using an algorithm, called a cipher.
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In cryptography, confusion and diffusion are two properties of the operation of a secure cipher which were identified by Claude Shannon in his paper Communication Theory of Secrecy Systems, published in 1949.
Cryptography or cryptology; from Greek κρυπτός kryptós, "hidden, secret"; and γράφειν graphein, "writing", or -λογία -logia, "study", respectively is the practice and study of techniques for secure communication in the presence of third parties (called adversaries).
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Methodology is the systematic, theoretical analysis of the methods applied to a field of study.
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In cryptography, nothing up my sleeve numbers are any numbers which, by their construction, are above suspicion of hidden properties.
In mathematics, the notion of permutation relates to the act of arranging all the members of a set into some sequence or order, or if the set is already ordered, rearranging (reordering) its elements, a process called permuting.
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In cryptography, plaintext is information a sender wishes to transmit to a receiver.
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Portable Document Format (PDF) is a file format used to present documents in a manner independent of application software, hardware and operating systems.
In cryptography, an S-box (substitution-box) is a basic component of symmetric key algorithms which performs substitution.
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In cryptography, a substitution cipher is a method of encoding by which units of plaintext are replaced with ciphertext, according to a fixed system; the "units" may be single letters (the most common), pairs of letters, triplets of letters, mixtures of the above, and so forth.
In cryptography, a transposition cipher is a method of encryption by which the positions held by units of plaintext (which are commonly characters or groups of characters) are shifted according to a regular system, so that the ciphertext constitutes a permutation of the plaintext.