sanmevv/aes128ctr

AES 128-bit CTR

*Advanced Encryption Standard-128 CTR (Counter) is a mode of operation for the AES algorithm.

*AES is a widely used symmetric encryption algorithm known for its security and efficiency.

*AES-128 CTR mode involves expanding the key into round keys and initializing a counter value.

*For each data block, the counter is encrypted to generate a keystream.

*The keystream is XORed with the plaintext or ciphertext block to produce the encrypted or decrypted block.

*The counter value is incremented for the next block, and the process is repeated until the entire message is processed.

*CTR mode allows for parallel encryption and decryption of blocks, making it efficient for small and large data sets.

*It also provides random access to the ciphertext without requiring preceding blocks.

*The security of AES-128 CTR relies on the uniqueness of the counter values.

*Reusing the same counter value with the same key compromises the encryption's security.

*It is crucial to use a unique nonce and/or block number for each encryption operation.

In conclusion, AES-128 CTR is a secure and efficient mode of operation for AES encryption, providing confidentiality for data transmission or storage.