What is Blowfish in security?

Blowfish is the first?symmetric?encryption algorithm?created by Bruce Schneier in 1993. Symmetric encryption uses a single encryption key to both?encrypt?and?decrypt?data. The sensitive data and the symmetric encryption key are utilized within the encryption algorithm to turn the sensitive data into ciphertext. Blowfish, along with its successor?Twofish, was in the running to replace the Data Encryption Standard (DES) but failed due to the small size of its block. Blowfish uses a block size of 64, which is considered wholly insecure. Twofish fixed this issue, by implementing a block with a size of 128. Blowfish is much faster than DES, but it trades in its speed for security.

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