How is hashing used? A. used to protect the transmission of software and large files to be downloaded
B. used for authentication, digital signatures, and message authentication codes
C. ecommerce protocols and bitcoin generation
D. all the above

Its A. used to protect the transmission of software and large files to be downloaded

Explanation: Hashing is an algorithm that calculates a fixed-size bit string value from a file. A file basically contains blocks of data. Hashing transforms this data into a far shorter fixed-length value or key which represents the original string. The hash value can be considered the distilled summary of everything within that file. A good hashing algorithm would exhibit a property called the avalanche effect, where the resulting hash output would change significantly or entirely even when a single bit o...