The best tool to protect data is cryptography.

Knowing crypt tools available & when to use them will serve you a lifetime.

click book for



Learning Crypto Tools

and DES (previous standard) for message, file & folder encryption –and

4 computerized preComputer methods for message encryption.

 Key Store (aka keychain, keyring)One key protects many keys.

creation & storage under your control because anyone that...

makes or shares your keys→  can use your keys.

 Crypto fingerPrinter to authenticate your data

  Logon–Password Manager stores web logon & password data

 Help &  links in each tool

like:videos     chapters     hands-on puzzles