Regular expression to find bcrypt hash?

Question

I am looking to find bcrypt hash string using regex (in PowerGrep), in a database.

Tried this regex:

{?A-Za-z_0-9.{60}}?

But no match w

Answer 1

Update:

Since beside the y value there might be a or b, you may use

^\$2[ayb]\$.{56}$

See the regex demo online. Details:

• ^ - start of a string
• \$ - a literal $ char (it should be escaped in a regex pattern to match a literal $ char, else, it will denote the end of string)
• 2 - a 2 char
• [ayb] - a character class matching any single char out of the specified set
• \$ - a $ char
• .{56} - any 56 chars other than line break chars (if not POSIX compliant regex engine is used, else, it will match any chars; to match any chars in common NFA engines, replace . with [\s\S] or use a corresponding DOTALL flag)
• $ - end of string.

Original answer

Your regex - {?A-Za-z_0-9.{60}}? - contains ranges not inside a character class [...], but inside optional curly braces, and thus they present sequences of literal characters. See your regex demo to see what I mean.

You can use the following regex:

^\$2y\$.{56}$

See demo

The ^ matches the start of string, \$2y\$ matches $2y$ literally (as $ is a special character and needs escaping) and .{56} is the rest 56 characters.