stream cipher
jadašiffer
olemus
krüptograafiline süsteem, milles märgijadana esitatud andmed krüpteeritakse märkhaaval, kasutades krüptovõtmetena pseudojuhuarve; krüptogrammi mingi biti muutumisel
muutub avateksti bitt samas kohas
Wiktionary:
(cryptography) a symmetric-key cipher in which plaintext digits are combined with a pseudorandom cipher digit stream
ISO/IEC 18033-1:
sümmeetriline krüpteerimissüsteem, mille algoritm sisaldab avateksti mingi jada märkide ükshaaval kombineerimist võtmejada märkidega mingi pööratava funktsiooni abil;
võtmejada saamise meetodi järgi jagatakse sünkroonset ja asünkroonset tüüpi jadašifriteks
= symmetric encryption system with the property that the encryption algorithm involves combining a sequence of plaintext symbols with a sequence of keystream symbols one symbol at a time, using an invertible function
Note 1 to entry: Two types of stream cipher can be identified: synchronous stream ciphers and self-synchronous stream ciphers, distinguished by the method used to obtain the keystream.
ülevaateid
https://techdifferences.com/difference-between-block-cipher-and-stream-cipher.html
https://www.okta.com/identity-101/stream-cipher/
https://en.wikipedia.org/wiki/Stream_cipher
https://research.cyber.ee/~peeter/teaching/kryptoi05s/streamkil.pdf
turvalisus
http://www.cs.ru.nl/~rverdult/Introduction_to_Cryptanalysis-Attacking_Stream_Ciphers.pdf
https://eprint.iacr.org/2014/677.pdf
https://www.isical.ac.in/~palash/talks/ASK11-talk.pdf
http://cs.ioc.ee/ewscs/2009/courtois/alg_att_stream-revised.pdf
vt ka
- asünkroonne jadašiffer
- plokkšiffer
- sünkroonne jadašiffer