Cipher encryption uses a key to protect information, with block and stream methods determining how encryption is applied. Symmetric ciphers use the same key for encryption and decryption, while asymmetric ciphers use different keys. Stream ciphers are constantly changing, but can be deciphered if the code repeats or the message is known. Cipher encryption is […]
A stream cipher is a flexible encryption algorithm that processes data based on a sequence of keys, allowing for high-speed processing. The first stream cipher was created in 1917 by Gilbert Vernam, who later developed the one-time pad cipher. Stream ciphers use a pseudorandom key to encrypt data and can be done manually or with […]
The term cipher refers to encrypted messages and can be a verb or noun. It originated from the Arabic word “sifr” meaning zero. Ciphertext is the encrypted message, while plaintext is the unencrypted message. A secret key is used to encrypt and decrypt messages, and there are different types of cipher systems, including Private Key […]
Block ciphers encrypt data in chunks and are more secure than stream ciphers. Symmetric encryption uses a single key, while asymmetric encryption uses two keys. Popular block ciphers include DES, AES, and IDEA. AES is more secure than DES and uses three different keys. IDEA uses a 128-bit key and is free for non-commercial use. […]
SSL is a cryptographic security measure that encrypts data on the internet, creating a secret connection between two computers. SSL is used for secure e-commerce and is not visible to most users. Data encryption is the process of converting plain text data into secret ciphers, and SSL encryption uses encryption keys to create an encrypted […]
Cipher machines have evolved from simple wooden wheels to high-tech computers with router encryption software. Julius Caesar’s monoalphabetic cipher inspired the first mechanical encryption machine, while Leon Battista Alberti developed the first polyalphabetic cipher. The Enigma machine was famously cracked by US, British and Polish cryptographers. Modern cipher machines offer guaranteed message integrity and sender […]
