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Computing > Support >  Library >  Safe Computing > Defenses > Authentication > PKI > Passwords >  

Selecting a Password

The password for your PKI certificate should be kept secret. You should not share your password with anyone.

The password used to protect a certificate is only known on your computer or eToken (depending upon where your certificate is stored) and cannot be recovered by your local computer support staff. Encrypting a file and then finding out you are unable to decrypt it is a painful experience. It is very important to create a password you will remember. Select your password very carefully in advance of obtaining your key pair and certificate.

A single-word password is not recommended, even if it is in a language other than English, as it is very vulnerable to a dictionary attack (when a computer runs through all the words in a dictionary until it finds your password).

It is highly recommended that you create a password that includes a combination of upper- and lower-case alphabetic letters and numbers. However, it must be easy enough for you to remember. So give it some thought before deciding on a password.

Some password do's and don'ts:

  • Don't use your name, address, or any similar personal information for your password.
  • Don't use any single word or pair of words.
  • Don't use a short password. Eight characters is the recommended length.
  • Do use a mixture of lower- and upper-case letters and digits: "m1Xed2kZ''.
  • Don't use an easy-to-guess sequence like "qwerty'' or "345678''.
  • Do use mnemonics to help you remember your password: "mpiNfy'' - my password is not for you.
  • Do change your password regularly.
  • Don't use any of the passwords listed here.

08/29/08

Last Updated: 8/29/08