Advantages of Stream Ciphers
Stream ciphers have many advantages, such as:
- Speed: Generally, this type of encryption is quicker than others, such as block ciphers.
- Low complexity: Stream ciphers are simple to implement into contemporary software, and developers don’t require sophisticated hardware to do so.
- Sequential in nature: Certain companies handle communications written in a continuous manner. Stream ciphers enable them to transmit data when it’s ready instead of waiting for everything to be finished because of their bit-by-bit processing.
- Accessibility: Using symmetrical encryption methods like stream ciphers saves businesses from having to deal with public and private keys. Additionally, computers are able to select the appropriate decryption key to utilize thanks to mathematical concepts behind current stream ciphers.
Stream Ciphers
In stream cipher, one byte is encrypted at a time while in block cipher ~128 bits are encrypted at a time. Initially, a key(k) will be supplied as input to pseudorandom bit generator and then it produces a random 8-bit output which is treated as keystream. The resulted keystream will be of size 1 byte, i.e., 8 bits. Stream ciphers are fast because they encrypt data bit by bit or byte by byte, which makes them efficient for encrypting large amounts of data quickly.Stream ciphers work well for real-time communication, such as video streaming or online gaming, because they can encrypt and decrypt data as it’s being transmitted.