bcrypt Password Hash in PY
Match bcrypt password hashes in their canonical $2a$/$2b$/$2y$ prefixed format.
Try it in the PY tester →Pattern
regexPY
\$2[abxy]?\$\d{2}\$[./A-Za-z0-9]{53} (flags: g)Python (re) code
pyPython
import re
pattern = re.compile(r"\$2[abxy]?\$\d{2}\$[./A-Za-z0-9]{53}")
input_text = "$2a$12$R9h/cIPz0gi.URNNX3kh2OPST9/PgBkqquzi.Ss7KIUgO2t0jWMUW"
for m in pattern.finditer(input_text):
print(m.group(0))Stdlib `re` module — no third-party dependency. Works on Python 3.6+.
How the pattern works
Version prefix $2 with optional suffix letter, cost parameter (two digits), salt + hash encoded in bcrypt's base64 alphabet for a fixed 53 trailing characters.
Examples
Input
$2a$12$R9h/cIPz0gi.URNNX3kh2OPST9/PgBkqquzi.Ss7KIUgO2t0jWMUWMatches
$2a$12$R9h/cIPz0gi.URNNX3kh2OPST9/PgBkqquzi.Ss7KIUgO2t0jWMUW