[Level 3] Knowing the Unix encrypt password.

Follow the below steps to know the encrypt password.

1. add new user "testpwd":
# useradd testpwd

2. set password to "mypass":
# passwd testpwd
Enter new UNIX password: [mypass]
Retype new UNIX password: [mypass]
passwd: password updated successfully

3. get encrypt password:
# grep ^testpwd /etc/shadow
testpwd:$6$qPApAmPP$.EyjXo6y2NVpxrlng1r.OHiQi8XTC/PCFdQ22Y7cxfk5KlZu3DOxyNA3W.78jMYD.ipyJLoS1TH01/HuEBjBE0:15037:0:99999:7:::
PS. The meaning of the encrypt.
$id$salt$encrypted, string terminated by "$"
ID | Method
────────────────────────────────────────────────── ───────
1 | MD5
2a | Blowfish (not in mainline glibc; added in some Linux distributions)
5 | SHA-256 (since glibc 2.7)
6 | SHA-512 (since glibc 2.7)

4. get command "mkpasswd":
# apt-get -y install mkpasswd

5. reproduce the encrypt password:
# mkpasswd -m sha-512 mypass qPApAmPP
$6$qPApAmPP$.EyjXo6y2NVpxrlng1r.OHiQi8XTC/PCFdQ22Y7cxfk5KlZu3DOxyNA3W.78jMYD.ipyJLoS1TH01/HuEBjBE0

Wish this helps.
regards,
Stanley Huang

Comments

Post a Comment

Popular posts from this blog

[Level 1] Reversion of git

Just read an article mentioned about the reversions of git, so take a note here. G H I J \ / \ / D E F \ | / \ \ | / | \|/ | B C \ / \ / A A = = A^0 B = A^ = A^1 = A~1 C = A^2 = A^2 D = A^^ = A^1^1 = A~2 E = B^2 = A^^2 F = B^3 = A^^3 G = A^^^ = A^1^1^1 = A~3 H = D^2 = B^^2 = A^^^2 = A~2^2 I = F^ = B^3^ = A^^3^ J = F^2 = B^3^2 = A^^3^2 reference: http://schacon.github.io/git/git-rev-parse#_specifying_revisions Wish this helps. regards, Stanley Huang
Read more

[Level 2] iif in Python

If you want to implement iif in Python, please refer to the following sample code: #!/bin/env python def iif(b): return 'It\'s True' if b else 'It\'s False' print iif(True) print iif(False) And the following sample, guess what will you get! #!/bin/env python b = True print 'b: %s' % 'Ture' if b else 'False' b = False print 'b: %s' % 'Ture' if b else 'False' Result: $ ./iif.py b: Ture False The second result is "False", not "b: False". Why??? Because the prededence of string concatenation is higher than if. Therefore you need to use () to make it correct. #!/bin/env python b = True print 'b: %s' % 'Ture' if b else 'False' b = False print 'b: %s' % ('Ture' if b else 'False') Wish this helps. regards, Stanley Huang
Read more