# Generate MD5 and SHA256 fingerprint of an OpenSSH host

## MD5

```console
# ssh-keyscan -p 8000 -t rsa rostam.cct.lsu.edu 2>/dev/null | awk '{ print $3 }' | base64 -d | md5sum | awk '{ print $1 }' | fold -w2 | paste -sd':' -
71:5a:1d:bb:1f:1e:fa:e6:34:98:3d:48:f5:ce:9d:68
# ssh-keygen -l -E md5 -f <(ssh-keyscan -p 8000 -t rsa rostam.cct.lsu.edu 2>/dev/null)
2048 MD5:71:5a:1d:bb:1f:1e:fa:e6:34:98:3d:48:f5:ce:9d:68 [rostam.cct.lsu.edu]:8000 (RSA)
```

## SHA256
```console
# ssh-keyscan -p 8000 -t rsa rostam.cct.lsu.edu 2>/dev/null | awk '{ print $3 }' | base64 -d | sha256sum | awk '{ print $1 }' | xxd -r -p | base64
Ht2XIO1XUu0diiH2V5PSiEAS0TgR/P0J1RAysk/9yXU=
# ssh-keyscan -p 8000 -t rsa rostam.cct.lsu.edu 2>/dev/null | awk '{ print $3 }' | base64 -d | md5sum | awk '{ print $1 }' | sed 's/.\{2\}/&:/g'
71:5a:1d:bb:1f:1e:fa:e6:34:98:3d:48:f5:ce:9d:68:
# ssh-keygen -l -E sha256 -f <(ssh-keyscan -p 8000 -t rsa rostam.cct.lsu.edu 2>/dev/null)
2048 SHA256:Ht2XIO1XUu0diiH2V5PSiEAS0TgR/P0J1RAysk/9yXU [rostam.cct.lsu.edu]:8000 (RSA)
```

## RandomArt
```console
# ssh-keygen -lv -E md5 -f <(ssh-keyscan -p 8000 -t rsa rostam.cct.lsu.edu 2>/dev/null)
2048 MD5:71:5a:1d:bb:1f:1e:fa:e6:34:98:3d:48:f5:ce:9d:68 [rostam.cct.lsu.edu]:8000 (RSA)
+---[RSA 2048]----+
|            .    |
|           . o   |
|        . o o .  |
|         =   o . |
|        S   o o .|
|           . O.=o|
|            =EB.+|
|            .o.o |
|             oo  |
+------[MD5]------+
# python3 ssh_fingerprint_to_randomart.py 71:5a:1d:bb:1f:1e:fa:e6:34:98:3d:48:f5:ce:9d:68
+---[   n/a  ]----+
|            .    |
|           . o   |
|        . o o .  |
|         =   o . |
|        S   o o .|
|           . O.=o|
|            =EB.+|
|            .o.o |
|             oo  |
+-----------------+
# ssh-keygen -lv -E sha256 -f <(ssh-keyscan -p 8000 -t rsa rostam.cct.lsu.edu 2>/dev/null)
2048 SHA256:Ht2XIO1XUu0diiH2V5PSiEAS0TgR/P0J1RAysk/9yXU [rostam.cct.lsu.edu]:8000 (RSA)
+---[RSA 2048]----+
|      .*O+.o.o* +|
|       +.+o+++ O.|
|        +.=.*.=.E|
|         ooO +o+*|
|        S ..* =+ |
|       . .   =   |
|        .        |
|                 |
|                 |
+----[SHA256]-----+
# python3 ssh_fingerprint_to_randomart.py -m sha256 Ht2XIO1XUu0diiH2V5PSiEAS0TgR/P0J1RAysk/9yXU
+---[   n/a  ]----+
|      .*O+.o.o* +|
|       +.+o+++ O.|
|        +.=.*.=.E|
|         ooO +o+*|
|        S ..* =+ |
|       . .   =   |
|        .        |
|                 |
|                 |
+-----------------+
```