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Cryptography is the scientific discipline for protecting confidentiality, integrity, and authenticity of information using mathematical techniques. It covers encryption, signatures, hashing, and key management. Use cases range from secure communications to data at rest and include algorithm lifecycle management; it requires careful protocol selection, implem…
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Cryptography protects information with mathematical techniques for confidentiality, integrity, and authenticity.
It grew from protecting messages and became systematic through mathematics and digital communication. NIST and OpenSSL show standards and practice; no founding event is established.
Encryption protects content, hashes check integrity, and signatures bind origin. Key management determines operational protection.
The topic has a specific mechanism and boundary that guide its use.
Its value depends on applying it to an observable problem and checking the result.
Cryptography supports TLS, secure storage, and signed software. Threat model and key care determine effectiveness.
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