Hashing

Hashing is a process of converting data (like a file or a message) into a fixed-size string of characters, which typically appears random.

Common hashing algorithms - SHA-256, MD5

Encryption

Encryption is the process of converting plaintext data into an unreadable format, called ciphertext, using a specific algorithm and a key. The data can be decrypted back to its original form only with the appropriate key.

Key Characteristics:

• Reversible: With the correct key, the ciphertext can be decrypted back to plaintext.
• Key-dependent: The security of encryption relies on the secrecy of the key.
• Two main types:
  • Symmetric encryption: The same key is used for both encryption and decryption.
  • Asymmetric encryption: Different keys are used for encryption (public key) and decryption (private key).

Symetric encryption

• Code

Asymetric encryption