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- Synopsis:
- $crypt(<string> <salt>)
-
- Technical:
- Given an arbitrary string and a "salt" (a randomizer), this function
- returns the input string in a one-way encrypted form. This function
- depends on the availability of a local crypt(3) library function. Only
- the first 8 characters of the input string are significant. The salt
- is a two-character string, and may be composed of any combination of
- any alphanumeric character, a period (.), or a forward-slash (/).
- Additional characters may be available, depending on the crypt(3) in
- use at your site.
-
- Practical:
- This function is primarily used for encrypting passwords, Unix style.
- It is helpful if the input salt is itself sufficiently random. Case is
- preserved in both the salt and input string.
-
- Returns:
- encrypted input text, or nothing if error
-
- Example:
- $crypt(foobar ab) returns "foobar" encrypted with salt "ab"
-
- Other Notes:
- As mentioned above, this function relies completely on the availability
- of a local crypt(3) library function. This function is not available
- on some systems. Refer to your system's manual pages for more
- information.
-
-