...cryptography

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Answer by M Ameen uz zaman
Submitted on 8/31/2006
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The practise and study of encryption and decryption - encoding data so that it can only be decoded by specific individuals. A system for encrypting and decrypting data is a cryptosystem. These usually involve an algorithm for combining the original data ("plaintext") with one or more "keys" - numbers or strings of characters known only to the sender and/or recipient. The resulting output is known as "ciphertext". The security of a cryptosystem usually depends on the secrecy of (some of) the keys rather than with the supposed secrecy of the algorithm. A strong cryptosystem has a large range of possible keys so that it is not possible to just try all possible keys (a "brute force" approach). A strong cryptosystem will produce ciphertext which appears random to all standard statistical tests. A strong cryptosystem will resist all known previous methods for breaking codes ("cryptanalysis").

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<< Back to: Cryptography FAQ (01/10: Overview)

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Question by abc
Submitted on 7/1/2003
Related FAQ: Cryptography FAQ (01/10: Overview)
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what is cryptography

Answer by Adnan Shah
Submitted on 7/17/2003
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Cryptography is the code of Secret writing

Answer by priti
Submitted on 12/18/2003
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Cryptography is protocol(set of rules) to send and recieve secure data delivery from source to exact destination.

Answer by priti
Submitted on 12/19/2003
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Cryptography is protocol(set of rules) to make secure data delivery from source to exact destination.

Answer by nakshatra
Submitted on 12/23/2003
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set of rules to make secure data delivery from source to exact destination

Answer by bapu
Submitted on 2/13/2004
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cryptography consists of an algorithm by which encryption and decryption of data is possible so that authenticate and secure data can be exchanged between the receiver and the sender.

Answer by Sachin
Submitted on 2/16/2004
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Cryptography is the way to secure your data from cyber tieves.

Answer by seelan
Submitted on 6/3/2004
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Cryptography is a science of keeping secrets secret, that is, it is a method of sending messages in disguised form.

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