Encyption and Cryptography 101 | TryHackMe Encryption — Crypto 101
We covered basics of Encryption and Cryptography by answering the questions in TryHackMe Encryption — Crypto 101 under complete beginner pathway.
Ciphertext — The result of encrypting a plaintext, encrypted data
Cipher — A method of encrypting or decrypting data. Modern ciphers are cryptographic, but there are many non cryptographic ciphers like Caesar.
Plaintext — Data before encryption, often text but not always. Could be a photograph or other file
Encryption — Transforming data into ciphertext, using a cipher.
Encoding — NOT a form of encryption, just a form of data representation like base64. Immediately reversible.
Key — Some information that is needed to correctly decrypt the ciphertext and obtain the plaintext.
Passphrase — Separate to the key, a passphrase is similar to a password and used to protect a key.
Asymmetric encryption — Uses different keys to encrypt and decrypt.
Symmetric encryption — Uses the same key to encrypt and decrypt
Brute force — Attacking cryptography by trying every different password or every different key
Cryptanalysis — Attacking cryptography by finding a weakness in the underlying maths
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