Encryption Flashcards
Encoding vs Encryption
Encoding is reversible with a publicly available algorithm, encryption can be recovered with a key that is not publicly available.
What is a cipher
A method or algorithm used to encrypt or encode plaintext data into cipher text. Transforms plaintext data
Examples of encoding (5)
Base64
URL encoding
Hexadecimal encoding
ROT13 encoding - rotates letters in alphabet by 13 letters
ASCII- used to encode data in a format such as digital signatures
Asymmetric Encryption is:
Asymmetric encryption, also known as public-key cryptography, uses a pair of keys: a public key and a private key. The public key is used for encryption, while the private key is used for decryption.
Symmetric encryption is:
Symmetric encryption, also known as secret-key or private-key encryption, uses the same key for both encryption and decryption.
Symmetric encryption algorithms (4)
AES (Advanced Encryption Standard): Widely used for securing sensitive data, AES is a symmetric block cipher with key lengths of 128, 192, or 256 bits.
DES (Data Encryption Standard): An older symmetric encryption algorithm, DES operates on 64-bit blocks and uses a 56-bit key.
3DES (Triple DES): A variant of DES that applies the DES cipher algorithm three times to each data block, providing stronger security.
RC4: A stream cipher widely used in protocols such as SSL/TLS, WEP, and WPA.
Asymmetric encryption algorithms (3)
RSA (Rivest-Shamir-Adleman): Named after its inventors, RSA is widely used for secure data transmission, digital signatures, and key exchange.
DSA (Digital Signature Algorithm): A standard for digital signatures based on mathematical principles similar to RSA.
ECC (Elliptic Curve Cryptography): A family of asymmetric encryption algorithms based on the algebraic structure of elliptic curves over finite fields. ECC offers strong security with shorter key lengths compared to RSA.
