STREAM CIPHERS
What are stream ciphers?
Stream Ciphers vs Block ciphers
Stream ciphers
Stream ciphers encrypt the bits of information one at a time - operate on 1 bit (or sometimes 1 byte) of data at a time (encrypt data bit-by-bit). Stream ciphers are faster and smaller to implement than block ciphers, however, they have an important security gap. If the same key stream is used, certain types of attacks may cause the information to be revealed.
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Stream Ciphers vs Block ciphers
Stream ciphers are faster and smaller to implement than block ciphers, however, they have an important security gap. If the same key stream is used, certain types of attacks may cause the information to be revealed.
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The difference between block ciphers and stream ciphers?
A stream cipher consists of a state machine that outputs at each state transition one bit of information. This stream of output bits is commonly called the running key. The state machine is nothing more than a pseudo-random number generator.
Block ciphers encrypt information by breaking it down into blocks and encrypting data in each block. A block cipher encrypts data in fixed sized blocks (commonly of 64 bits).
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• How to encrypt text
1. Enter the information you want to encrypt in "Text you want to encrypt" area and press "Encrypt" button.
2. Enter password for encryption and confirm it.
3. Select if you want to use "Encrypt with password check confirmation" option or not and click "OK". For more information about "Encrypt with password check confirmation" option click here
4. For more security you can encrypt your text multiple times. Set the necessary number of passes for multiple encryption and click 'OK'.
5. Your text in the encrypted form appears in "Encrypted text" area.
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