PKE	Public-key encryption
KEM	Key encapsulation mechanisms
NIST	National Institute of Standards and Technology
PQC	Post-quantum cryptography
LWE	Learning with error
PKC	Public key cryptosystem
KR-PCA	Key recovery under plaintext checking attacks
KR-CPA	Key recovery under chosen plaintext attacks
KR-CC	Key recovery under chosen ciphertext attacks
IND-CPA	INDistinguishability against chosen plaintext attacks
IND-CCA	INDistinguishability against chosen ciphertext attacks