Flashcards
Security+ Cryptography
Cards in this deck (15)
- 1Stream CiphersRC4, CFB, OFB
symmetric key algorithms
encrypt plaintext to ciphertext, either one bit or byte at a time
easier to reverse, but fast than block ciphers - 2Block CiphersAES, DES, 3DES, ECB, GCM, MD5, Blowfish, Twofish
symmetric key algorithms
encrypt plaintext to ciphertext, most commonly in 64-bit blocks
harder to reverse, but slower than stream ciphers - 3Symmetric EncryptionAES, DES, 3DES, Blowfish, Twofish, RC4
- 4Asymmetric Encryptionpart of PKI
RSA. DH, DSA, ElGamal, ECC - 5Ephemeral Keysasymmetric encryption keys that are generated for each key exchange, may be used more than once in a session
exist for a short period of time - 6Elliptical Curve= ECC
leverages the algebraic structures of elliptic curves over finite fields to derive public/private key pairs - 7Cipher Suitesgenerated to identify specific types of encryption on info based on 4 elements:
1. the key exchange algorithm
RSA, DH, ECDH, ECDHE
2. the authentication algorithm
RSA, DSA, ECDSA
3. the bulk encryption algorithm
AES, 3DES
4. the MAC algorithm
SHA, MD5 - 8HashesSHA-1, SHA-2, MD5, RIPEMD
- 9CRCused for message integrity verification
- 10Key Stretchinga way to strengthen weak passwords
uses salting and hashing repeatedly
BCRYPT, PBKDF2 - 11Checksumsessentially hashes, typically used to check the integrity of files or packets
- 12Homomorphic Encryptionallows data to be analyzed without making the data visible
- 13PKIbuilt around a server that creates, issues, and stores digital certificates
- 14Key Escrowis a service provided by a company to secure a backup of the keys by the client company to its employees, systems, and websites
- 15Certificate Formats and PurposeDER (.cer) - binary encoded, does not
include private keys
PEM (.pem, .cer, .crt) - Base 64 ASCII
encoded
PKCS#7 (.p7b) - includes public key, cert
info, cert chain
PKCS#12 - includes both keys, cert info + extended properties, cert chain
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- CompTIA Information Technology (Security+ ) Flashcards on Security+ Cryptography, created by Lyndsay Badding on 28/04/2023.
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- Lyndsay Badding
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