Hashing

If someone is able to retrieve sensitive data, then this sensitive data maybe at risk.

There a few methods of how to hide sensitive data. One of the methods is hashing. 

Instead of the data, hash of that data is presented. A hash is math operation that takes this data as input and generates a smaller value of that data. Good hashing methods will not have collisions or they will be very rare. Hash collisions are occurrences of two text having the same hash.

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