Kolla man sidorna för shadow (5) respektive crypt (3) för infon du är ute efter.
från shadow:
Citat:
The password field must be filled. The encrypted password consists of 13 to 24
characters from the 64 characters alphabet a thru z, A thru Z, 0 thru 9, \.
and /. Optionally it can start with a "$" character. This means the encrypted
password was generated using another (not DES) algorithm. For example if it
starts with "$1$" it means the MD5-based algorithm was used.
Refer to crypt(3) for details on how this string is interpreted.
från crypt, vilket är relevant för detta fallet:
Citat:
Glibc Notes
The glibc2 version of this function has the following additional fea-
tures. If salt is a character string starting with the three charac-
ters "$1$" followed by at most eight characters, and optionally termi-
nated by "$", then instead of using the DES machine, the glibc crypt
function uses an MD5-based algorithm, and outputs up to 34 bytes,
namely "$1$<salt>$<encoded>", where "<salt>" stands for the up to 8
characters following "$1$" in the salt, and "<encoded>" is a further 22
characters. The characters in "<salt>" and "<encoded>" are drawn from
the set [a–zA–Z0–9./]. The entire key is significant here (instead of
only the first 8 bytes).
Jag hittar inte direkt vilken algoritm $6$ innebär men jag lutar åt att det är SHA 512 vilket antagligen är från en Red Hat maskin.
