P4PASSWD

Description

Usage Notes

Used by Client?	Used by Server?	Command-Line Alternative	Can be set in P4CONFIG file?
Yes	No	p4 -P passwd command	Yes

Value if not Explicitly Set

Operating System	Value
All	None

Notes

While it is possible to manually set the P4PASSWD environment variable to your plaintext password, the more secure way is to use the p4 passwd command. On UNIX, this will invoke a challenge/response mechanism which securely sends your password to the Perforce server. On Windows, this sets P4PASSWD to the encrypted MD5 hash of your password.

On Windows platforms, if you set a password via P4Win (the Perforce Windows Client) the value of the registry variable P4PASSWD is set for you. Setting the password in P4Win is like using p4 passwd (or p4 set P4PASSWD) from the MS-DOS command line, setting the registry variable to the encrypted MD5 hash of the password. The unencrypted password itself is never stored in the registry.