Overview#

Encryption is a two-way street. You can Encrypt a Message and then you can Decrypt the Message.

Encryption provides Confidentiality of the Message but provides no Integrity of the Message.

Hashing, well at least Secure Hash Algorithms, is a one-way street. You can Hash the Message but you can not un-Hash the Message.

Hashing provides Integrity of a Message but provides no Confidentiality.

When you require Confidentiality and Integrity, you must use both Encryption and Hashing.

If you need Non-Repudiation, then you need to TODO

More Information#

There might be more information for this subject on one of the following: ...nobody

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• [#1] - Guidelines for building an encryption and hashing policy - part 2 - based on data observed:2015-06-29