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Should special characters be allowed in passwords?
No, it’s not bad to use “special” (better: non-ASCII) characters in passwords. trust the website that it will never come up with a non-UTF-8 login form, make sure you will always be able to type your password when you need to do so.
What is ideal No of characters allowed in password?
“A longer password is usually better than a more random password,” says Mark Burnett, author of Perfect Passwords, “as long as the password is at least 12-15 characters long.”
Which symbols are allowed in passwords?
Characters that are valid for user IDs and passwords
- Lowercase characters {a-z}
- Uppercase characters {A-Z}
- Numbers {0-9}
- Exclamation point {!}
- Open parenthesis {(}
- Close parenthesis {)}
- Dash {-}; this character is not supported as the first character in the user ID or password.
When to not allow chars in passwords?
If you are generating random passwords, it’s a good idea to avoid characters that can be confused for others. For example (ignoring symbols): In addition to allowing all characters, consider having a very generous max length on the password field to support people who take the passphrase approach to passwords.
What are the characters to avoid in passwords?
Here are the character sets that Steve Gibson uses for his “Perfect Paper Password” system. They are “characters to allow” rather than “characters to avoid”, but they seem pretty reasonable for what you want: For pronounceable passwords, I’m not familiar with the algorithms but you might want to look at APG and pwgen as a starting point.
What should I not allow in passwords?
Experimentally, most problems of that kind are avoided by restricting passwords to the range of printable ASCII characters (those with codes ranging from 32 to 126 — personally I would avoid space, so make that 33 to 126) and enforcing mono-byte encoding (no BOM, one character becomes one byte).
Can you use 26 characters in a password?
I only disallow characters that can’t be typed on a standard keyboard. There’s no reason why a user can’t choose a secure password with 26 uppercase and lowercase letters, 10 numbers, and 20 something symbols. If you’re doing a login system for a public site, instead of forcing users to choose a secure password, I would recommend using OpenID.