Information and communication theory, circuits Cryptography Concept
Public-key cryptography
Summary
Public-key cryptography is a kind of cryptography in which each user has a pair of keys: a public key and a private key. Anyone can use the public key to encrypt a message or to check a signature. Only the owner of the private key can decrypt the message or make the signature. Its security depends on problems that are believed to be hard to solve, such as integer factorization or the discrete logarithm.
Remarks
Before the mid-1970s, all ciphers were symmetric: both parties used the same secret key, which they had to exchange in a secure way. The RSA cryptosystem and the Diffie–Hellman key exchange are two early examples. Whitfield Diffie and Martin Hellman published the idea in 1976.
Further reading
About this page
| Tag | 01E9MNJYEX |
|---|---|
| URI | m2://01E9MNJYEX |
| Aliases | asymmetric-cryptography |
| Kind | concept |
| Writing | W1 stated |
| MSC | 94A60 |
| Same as |
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What this page needs for W2
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- edge not_instance_of in: at least one non-example (0 of 1)
- edge specializes both: the more general notions and the special cases (0 of 1)
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