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cryptography    
n. 密码使用法,密码

密码使用法,密码

cryptography
密码术

cryptography
密码学

cryptography
n 1: the science of analyzing and deciphering codes and ciphers
and cryptograms [synonym: {cryptanalysis}, {cryptanalytics},
{cryptography}, {cryptology}]
2: act of writing in code or cipher [synonym: {cryptography},
{coding}, {secret writing}, {steganography}]

Cryptography \Cryp*tog"ra*phy\ (-f?), n. [Cf. F. cryptographie.]
1. The act or art of writing in code or secret characters;
also, secret characters, codes or ciphers, or messages
written in a secret code.
[1913 Webster PJC]

2. The science which studies methods for encoding messages so
that they can be read only by a person who knows the
secret information required for decoding, called the key;
it includes {cryptanalysis}, the science of decoding
encrypted messages without possessing the proper key, and
has several other branches; see for example
{steganography}.
[PJC]

48 Moby Thesaurus words for "cryptography":
cipher, code, coded message, coup de plume, criticism,
cryptanalysis, cryptoanalysis, cryptoanalytics, cryptogram,
cryptograph, cryptographer, cryptology, diagnostics, engrossment,
epigraphy, exegetics, hermeneutics, ink spilling, inkslinging,
inscription, invisible ink, lettering, lexicography,
literary criticism, macrography, metoposcopy, micrography,
oneirology, paleography, pathognomy, pen, pen-and-ink,
pencil driving, physiognomics, physiognomy, scrivenery, scrivening,
secret language, secret writing, semeiology, semeiotics,
sympathetic ink, symptomatology, textual criticism, tropology,
typewriting, typing, writing

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}").

See also {cryptology}, {public-key encryption}, {RSA}.

{Usenet} newsgroups: {news:sci.crypt},
{news:sci.crypt.research}.

{FAQ} {MIT
(ftp://rtfm.mit.edu/pub/usenet/news.answers/cryptography-faq/)}.

{Cryptography glossary
(http://io.com/~ritter/GLOSSARY.HTM#BruteForceAttack)}.

{RSA cryptography glossary
(http://rsasecurity.com/rsalabs/faq/glossary.html)}.

{Cryptography, PGP, and Your Privacy
(http://draco.centerline.com:8080/~franl/crypto.html)}.

(2000-01-16)


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英文字典中文字典相关资料:


  • Cryptography - Wikipedia
    Cryptography, or cryptology, [1] is the practice and study of techniques for secure communication in the presence of adversarial behavior [2] More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages [3]
  • Cryptography and its Types - GeeksforGeeks
    Cryptography is the science of protecting information using mathematical techniques to ensure confidentiality, integrity, and authentication It transforms readable data into unreadable form, preventing unauthorized access and tampering
  • What is cryptography? - IBM
    Cryptography is the practice of developing and using coded algorithms to protect and obscure transmitted information so that it may only be read by those with the permission and ability to decrypt it
  • Cryptography Tutorial - GeeksforGeeks
    Understand the basic concepts of cryptography, its goals, terminology, and how cryptographic systems work This section explains the fundamentals of securing information and the basic components of cryptographic systems
  • Cryptography | NIST
    What is cryptography? Cryptography uses mathematical techniques to protect the security of information
  • What is Cryptography? Definition, Importance, Types | Fortinet
    Cryptography is the process of hiding or coding information so that only the person a message was intended for can read it The art of cryptography has been used to code messages for thousands of years and continues to be used in bank cards, computer passwords, and ecommerce
  • ISO - What is cryptography?
    Cryptography is an important computer security tool that deals with techniques to store and transmit information in ways that prevent unauthorized access or interference
  • Cryptography | Computer science theory - Khan Academy
    Cryptography challenge 101 Ready to try your hand at real-world code breaking? This programming challenge contains a beginner, intermediate, and advanced level See how far you can go!
  • CRYPTOGRAPHY Definition Meaning - Merriam-Webster
    For a word having to do with secrets, cryptography has a surprisingly transparent origin The word comes from Greek kryptós, meaning "hidden" or "secret," and graphein, meaning "to write "





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