olemus
krüptosüsteemi rünne, mille puhul ründaja saab uurida enda valitud suvaliste krüptogrammide avatekste
= an attack where the attacker can only chose ciphertexts, and may see their decryption

ülevaateid
https://en.wikipedia.org/wiki/Chosen-ciphertext_attack
https://www.youtube.com/watch?v=qyS8rIQisJk
http://cs.wellesley.edu/~cs310/lectures/10_CCA_slides_handouts.pdf
http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf

tõrje
https://www.coursera.org/learn/cryptography/lecture/34ORc/security-against-chosen-ciphertext-attacks
https://www.di.ens.fr/david.pointcheval/Documents/Papers/2000_pkcC.pdf
http://crypto.stanford.edu/~dabo/papers/ccaibejour.pdf
http://www.shoup.net/papers/cca-fac.pdf

vt ka
- valitava krüptogrammiga adaptiivrünne
- valitava krüptogrammipakiga rünne