Can you list the main types of encryption algorithms?

The main types of encryption algorithms are divided into two broad categories:

1. Symmetric algorithms — use the same key for encryption and decryption. Examples:

   • AES (Advanced Encryption Standard)
   • DES (Data Encryption Standard)
   • 3DES (Triple DES)
   • RC4, RC5

2. Asymmetric algorithms — use a pair of keys: a public key for encryption and a private key for decryption. Examples:

   • RSA
   • ECC (Elliptic Curve Cryptography)
   • DSA (Digital Signature Algorithm)

There are also hash functions (not encryption in the strict sense, but often used together):

• SHA-2, SHA-3
• MD5 (deprecated)

Depending on the task, the appropriate algorithm is chosen: symmetric algorithms are faster, asymmetric ones are convenient for key exchange and digital signatures.