Mis vahe on krüpteerimisel ja hash'imisel?

Encryption and hashing are different cryptographic operations with different purposes.

• Encryption: transforms data into a format that can be reversed (decrypted) using a key. Used to protect data confidentiality during transmission or storage. Example: AES, RSA.

• Hashing: transforms data into a fixed-length hash code that uniquely (as much as possible) corresponds to the original data, but reverse transformation is impossible. Used for data integrity verification and password storage. Example: SHA-256, bcrypt.

Example: when storing passwords, hashing with salt is used so that the original password cannot be recovered, and during data transmission over the network, encryption is applied so that no one can read the content without the key.