ADPCM

Adaptive differential pulse-code modulation

AES

Advanced encryption standard

AMR

Adaptive multi-rate

APC

Adaptive predictive coding

CA

Certificate Authority

CELP

Code-excited linear prediction

CIA

Confidentiality, integrity, availability

CPU

Central processing unit

CRL

Certificate Revocation List

DCT

Discrete cosine transform

DES

Data encryption standard

DH

Diffie–Hellman (algorithm)

DPCM

Differential pulse-code modulation

ECC

Elliptic-curve cryptography

ECDH

Elliptic-curve Diffie–Hellman

ECDLP

Elliptic-curve discrete logarithm problem

ECDSA

Elliptic-curve digital signature algorithm

EFF

Electronic Frontier Foundation

FIPS

(US) Federal Information Processing Standard

GIF

Graphics interchange format

HF

High frequency

HTTP

Hypertext Transfer Protocol

HTTPS

Hypertext Transfer Protocol Secure

IEEE

Institute of Electrical and Electronics Engineers

JPEG

Joint Photographic Experts Group

kbps

kilobits per second

LFSR

Linear feedback shift register

LPC

Linear predictive coding

LWE

Learning with errors

LZ77 / LZ78 / LZW

Lempel–Ziv 1977 / 1978 / Welch

MIME

Multipurpose Internet Mail Extensions

MP2

MPEG-1 audio layer II

MPE

Multipulse excitation

MQ

Multivariate-quadratic

NIST

(US) National Institute of Standards and Technology

NSA

(US) National Security Agency

OCSP

Online Certificate Status Protocol

OR

Logical OR

PCM

Pulse-code modulation

PGP

Pretty good privacy

PKI

Public-key infrastructures

PNG

Portable network graphics

PQC

Post-quantum cryptography

PSTN

Public switched telephone network

RA

Registration Authority

RPE

Regular pulse excitation

S/MIME

Secure/Multipurpose Internet Mail Extensions

SIKE

Supersingular isogeny key encapsulation

SPN

Substitution–permutation network

SSH

Secure (socket) shell

SVP

Shortest vector problem

TIFF

Tagged Image File Format

TLS

Transport Layer Security

VoIP

Voice over Internet protocol

VPN

Virtual private networks

XOR

Exclusive OR