Which encryption technique is used by the ransomware eCh0raix?

Which encryption technique is used by the ransomware eCh0raix?

• A. AES
• B. RSA-2048
• C. DES
• D. Blowfish

Answer: (A)

Ransomware like eCh0raix typically uses a fast symmetric cipher to encrypt the actual file contents, and in this case the technique used is AES (Advanced Encryption Standard). AES is favored for bulk data because it efficiently handles large volumes of data with strong security when used with a random key. The ransomware generates a random AES key for the encryption process and then often protects that key with an asymmetric key (such as RSA-2048) so the attacker can recover the key to decrypt later. DES is outdated, Blowfish is less commonly used in modern attacks, and RSA-2048 by itself wouldn’t encrypt the files—it's used to safeguard the AES key rather than the data itself.

Ransomware like eCh0raix typically uses a fast symmetric cipher to encrypt the actual file contents, and in this case the technique used is AES (Advanced Encryption Standard). AES is favored for bulk data because it efficiently handles large volumes of data with strong security when used with a random key. The ransomware generates a random AES key for the encryption process and then often protects that key with an asymmetric key (such as RSA-2048) so the attacker can recover the key to decrypt later. DES is outdated, Blowfish is less commonly used in modern attacks, and RSA-2048 by itself wouldn’t encrypt the files—it's used to safeguard the AES key rather than the data itself.