CBC

CBC:

Cipher Block Chaining mode

Cipher Block Chaining (CBC) is a mode of operation for block ciphers that enhances the security of encryption by combining the output of previous blocks with the current block of plaintext. In CBC mode, each block of plaintext is XORed with the previous ciphertext block before encryption, making it more resistant to certain types of attacks. This chaining effect ensures that identical plaintext blocks produce different ciphertext blocks, improving the overall security of the encryption process.

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In Cipher Block Chaining (CBC) mode, an initialization vector (IV) is added to the first block of plaintext before encryption and the resultant ciphertext is added to the next block of plaintext before encryption, and so on. Decryption is the reverse process. https://www.cryptosys.net/manapi/api_blockciphermodes.html