Static key
Encyclopedia
A cryptographic
key
is called static if it is intended for use for a relatively long period of time and is typically intended for use in many instances of a cryptographic key establishment scheme. Contrast with an ephemeral key
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Cryptography
Cryptography is the practice and study of techniques for secure communication in the presence of third parties...
key
Key (cryptography)
In cryptography, a key is a piece of information that determines the functional output of a cryptographic algorithm or cipher. Without a key, the algorithm would produce no useful result. In encryption, a key specifies the particular transformation of plaintext into ciphertext, or vice versa...
is called static if it is intended for use for a relatively long period of time and is typically intended for use in many instances of a cryptographic key establishment scheme. Contrast with an ephemeral key
Ephemeral key
A cryptographic key is called ephemeral if it is generated for each execution of a key establishment process. In some cases ephemeral keys are used more than once, within a single session where the sender generates only one ephemeral key pair per message and the private key is combined separately...
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See also
- Cryptographic key typesCryptographic key typesOne of the most important aspects of any cryptographic system is key management; it is also the aspect which is most often neglected. A very common mistake is mixing different key types and reusing the same key for different purposes...
- Recommendation for Key Management — Part 1: general, NIST Special Publication 800-57
- NIST Cryptographic Toolkit