Simplest method of hiding sensitive information

Posted by drozzy on Stack Overflow See other posts from Stack Overflow or by drozzy
Published on 2010-03-20T17:46:47Z Indexed on 2010/03/20 17:51 UTC
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encryption

What is the simplest way I can hide a sensitive identifier, while providing some equivalent means of identifying the data from outside?

For example, lets say I have a database table with records and one of them is an sensitive ID field.

ID
2A
1S
etc...

then I want to have a second record:

ID    PublicID
2A    AXXX44328
1S    KKKZJSAAS

such that when I am given a PublicID I can always determine what ID it refers to:

H(PublicID) = ID

but nobody else is able to do so.

I suspect this is like, encryption - with throwing away a public key?

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Developer IT

Simplest method of hiding sensitive information - Developer IT

Simplest method of hiding sensitive information

encryption

Related posts about encryption

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Confused about encryption with public and private keys (which to use for encryption)

Software tools to automatically decrypt a file, whose encryption algorithm (and/or encryption keys)

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