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Security+ Crypto

Security+ Flash Cards - Cryptography Terms

TermDefinitionExplanation
3DES Triple Digital Encryption Standard
AES Advanced Encryption Standard
AES256 Advanced Encryption Standard 256-bit
CA Certificate Authority
CBC Cipher Block Chaining
CCMP Counter-mode CBC-MAC Protocol Counter-mode Cipher Block Chaining Message Authentication Code Protocol - Used with WPA2. Cryptographic encapsulation method that is more secure than WEP and TKIP of WPA.
CFB Cipher Feedback "CFB is a close relative of CBC, and makes a block cipher into a self-synchronizing stream cipher. Operation is very similar; in particular, CFB decryption is almost identical to CBC encryption performed in reverse:"
CRL Certificate Revocation List
CSR Certificate Signing Request A CSR is a request submitted to a CA for a digital certificate.
CTM Counter-Mode
CTR Mode Counter Mode Counter mode is a block cipher mode that works similar to a stream cipher.
DES Digital Encryption Standard
DHE (1) Diffie-Hellman Ephemeral Diffie-Hellman Ephemeral uses temporary public keys.
DSA Digital Signature Algorithm
ECB Electronic Code Book
ECC Elliptic Curve Cryptography
ECDHE Elliptic Curve Diffie-Hellman Ephemeral "Variant of Diffie-Hellman Ephemeral (DHE) that uses elliptic curve cryptography, which uses less computational power."
ECDSA Elliptic Curve Digital Signature Algorithm
GCM Galois Counter Mode GCM is a mode of operation for symmetric-key cryptographic block ciphers that has been widely adopted because of its efficiency and performance.
GPG GNU Privacy Guard "GnuPG is a complete and free implementation of the OpenPGP standard as defined by RFC4880 (also known as PGP). GnuPG allows you to encrypt and sign your data and communications; it features a versatile key management system, along with access modules for all kinds of public key directories."
HMAC Hashed Message Authentication Code
IDEA International Data Encryption Algorithm
IKE Internet Key Exchange
IV Initialization Vector
MAC (3) Message Authentication Code
MD5 Message Digest 5
OCSP Online Certificate Status Protocol OCSP is used to determine the state of an identified certificate. The OCSP client and the OCSP responder exchange information about whether a certificate is valid or revoked.
PKCS #12 Public Key Cryptography Standards #12 "Defines a file format commonly used to store private keys with accompanying public key certificates, protected with a password-based symmetric key. -- .p12 and .pfx are file extensions"
PBKDF2 Password-based Key Derivation Function 2 "PBKDF2 applies a pseudorandom function to the input password along with a salt and repeats the process to produce a derived key, which can be used as a cryptographic key in subsequent operations. a/k/a key stretching"
PFS Perfect Forward Secrecy
PFX Personal Information Exchange "Binary format to store a server certificate, intermediate certificates and private key in one file. Used to import and export certs and private keys. -- .p12 and .pfx are filename extensions."
PGP Pretty Good Privacy
PKI Public Key Infrastructure
POODLE Padding Oracle On Downgrade Legacy Encryption POODLE is a man-in-the-middle exploit found in 2014 which takes advantage of Internet and security software clients' backward compatibility to SSL 3.0.
RA (1) Recovery Agent A Recovery Agent is someone who is permitted to decrypt another user's data in case of emergency.
RA (2) Registration Authority A Registration Authority authenticates the entity making the request for a digital certificate. Sometimes called a subordinate CA.
RC4 Rivest Cipher version 4
RIPEMD RACE Integrity Primitives Evaluation Message Digest RACE = Research and development in Advanced Communications technologies in Europe
RSA "Rivest, Shamir and Adelman"
SHA Secure Hashing Algorithm
TKIP Temporal Key Integrity Protocol
XOR Exclusive Or
PKCS Public Key Cryptography Standards "Public-key cryptography standards devised and published by RSA Security LLC, starting in the early 1990s."
Created by: ProfNabozny
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