HASH_IDENTIFIER

Hash Input

Hash Reference Table

Algorithm	Bits	Chars	Usage	Hashcat -m	Crack
MD5	128	32	Legacy (avoid)	0	Easy
SHA-1	160	40	Legacy (avoid)	100	Moderate
SHA-256	256	64	General purpose	1400	Hard
SHA-512	512	128	General purpose	1700	Very Hard
bcrypt	184	60	Passwords	3200	Very Hard
NTLM	128	32	Windows auth	1000	Easy
SHA-512crypt	512	106	Linux /etc/shadow	1800	Very Hard
Argon2id	256	var	Modern passwords	N/A	Extreme

Quick Lengths

MD5 / NTLM32

SHA-140

LM Hash48

SHA-22456

SHA-25664

SHA-38496

SHA-512128

Known Prefixes

$2a$ / $2b$bcrypt

$1$ MD5-Unix

$5$ SHA-256-Unix

$6$ SHA-512-Unix

$argon2Argon2

$s0$ scrypt

$y$ yescrypt

*MySQL SHA-1