
Cryptography is essentially used for converting plain text into cipher text to ensure confidentiality. If a user has the appropriate key, the cipher text can be reversed to get the original plain text. A message digest or hash is a technique... Read more

When the first electronic computers emerged from university and military laboratories in the late 1940s and early 1950s, visionaries proclaimed them the harbingers of a second industrial revolution that would transform business, government and industry. But few laymen, even if... Read more
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