I'm trying to use argon2 for password hashing from within a C++ application.
The Botan library seems well regarded for this.
I have installed the library on my system via yum.
I'm trying to use the command line utilities provided to test the library.
Using the following command:
botan gen_argon2 mypass
I get output like this:
$argon2id$v=19$m=65536,t=1,p=1$Wr2U4EazXMyIS3RJJczZ9Q$TE4xgLdvtLVNgia9wyrXpI+KSFkw6YJo2RR0yQVeahM
I then want to verify this
botan check_argon2 mypass $argon2id$v=19$m=65536,t=1,p=1$Wr2U4EazXMyIS3RJJczZ9Q$TE4xgLdvtLVNgia9wyrXpI+KSFkw6YJo2RR0yQVeahM
I get
Password is NOT valid
What am I doing wrong?
I've tried putting various parts of the output of gen_argon2 as the input to check_argon2 but always get NOT valid.
I've tried an online hash generator checker here:
https://argon2.online
This verifies the full hash $argon2id$v=19$m=65536,t=1,p=1$dNxyyHX/WSojvaSwAEilwg$I9F/yzzMk/fclJIFNrkoSjP1WxVOI0lZJU1FTWRmxu0 as being correct
I've tried putting the hash in quotes to avoid bash interpreting any of it, but still no joy.
Update:
Calling the corresponding functions from C++ seems to work as expected, so maybe this is just a command line parsing issue.
I have more questions on the botan library but I'll post those separately
It looks like your shell may be escaping the $ characters. Try wrapping your hash in single quotes on the command line.
Related
I am attempting to use the SVN_Load_Dirs.PL script file (https://svn.apache.org/repos/asf/subversion/trunk/contrib/client-side/svn_load_dirs/) to attempt to merge a platform drop.
However, I can't get the --glob_ignores flag to behave as I'd expect, and I know so little perl that I can't dig into the script to understand why. The format I am using is:
--glob_ignores=*.jazzignore
Where I want to ignore all .jazzignore files (although I am fine with anything with "jazzignore" in either the extension or name being ignored. I've looked for examples but can't find any actual usage of this flag anywhere. What I am looking for is a way to ignore all .jazzignore files and a few entire directories (like jazz5 for an example)
I assumed the flag would then be --glob_ignores="*.jazzignore *.jazz5" but that doesn't appear to be working.
It turns out that the script was failing silently because I was running it from a windows cmd (and therefore never getting to the flag option). Apparently there are some issues running it this way and it was designed to be run from a linux command line. After switching it works perfectly.
script uses Net::SNMP module for Perl.
I'm trying to run snmpget command with some options added e.g. ( -Ir ) (here is list of options), but I haven't found any way to do that. In documentation for this module I didn't found anything about adding input options to snmp command.
If there is any other module that supports this, it would bi nice but it wouldn't be first pick as that would require a lot of changes in script (not mine script, just doing minor changes).
I could run system (or backticks) command from Perl, e.g.:
snmpget -v2c -c COMMUNITY -Ir HOST OID
and parse output but I would like to avoid that also.
Any advice or solution would be welcome since I'm still new to Perl.
Thx.
You linked to the documentation of Net::SNMP so I'm sure you've read it all before asking... Right?
There is no "command", there is only your script's calls to the API.
[Edit after the below comments]
Net::SNMP has no option to check indexes before sending the request. So, you could say the equivalent of -Ir is enabled by default. In fact, Net::SNMP does not load your MIB, so it has no way of checking the validity of your requested variables before sending the request.
So the larger context of this problem is that it isn't possible, for whatever reason, to decrypt this file using, say, Bouncy Castle, so we're trying to do an automated command line with the normal gpg utility instead... I originally thought that would be quicker than trying to figure out why Bouncy Castle doesn't believe this is a real PGP-encrypted file, but I might have been wrong.
Here's the pipeline:
echo password | gpg --batch --yes --passphrase-fd 0 "filename"
This works perfectly in Powershell. Actually, several variations on this work perfectly in Powershell, but that's not the point...
The point is that I'm trying to run this in cmd.exe and it doesn't work there. Instead, I get an error saying that there has been no password provided and that, therefore, there is no secret key available and that, therefore, the file cannot be decrypted.
Given that the instructions I read for this are specifically for cmd.exe (not Powershell), I'm more than a little confused. Any idea what's going on here?
Apparently, the problem is that the password being passed through the pipeline includes a space--the one that appears between our hypothetical "d" and the pipe symbol itself. :)
So, for future reference, this works:
echo password|gpg --batch --yes --passphrase-fd 0 "filename"
Which, by the way, is exactly what the guide had said, but which I never caught onto because I did my initial testing in Powershell and didn't realize how picky cmd's echo command could be.
I'm currently trying to get this script to work:
https://github.com/mj41/auto-unrar/blob/master/bin/unrar2.pl
The only problem is that I get the following error:
Entering directory 'Series'
Entering directory 'Series/SerieName'
Entering directory 'Series/SerieName/Season2'
Entering directory 'Series/SerieName/Season2/SerieNameS02E21.720p.HDTV.X264-DIMENSION'
Entering directory 'Series/SerieName/Season2/SerieNameS02E21.720p.HDTV.X264-DIMENSION/Sample'
Can't call method "List" on an undefined value at unrar2.pl line 973.
This line is rar_obj->List();
$rar_conf{'-verbose'} = $rar_ver if $rar_ver;
my $rar_obj = Archive::Rar->new( %rar_conf );
$rar_obj->List();
my #files_extracted = $rar_obj->GetBareList();
This is an old script, 3-4 years old and I changed a little like SHA1 to SHA and use Filesys::DfPortable; to Df
Does anyone know how I can fix this error :)?
EDIT:
I contacted the developer and he told me I needed to install a program that can handle rar commands. So how would I do that. I can't seem to be able to install unrar.
EDIT2:
What my problem is now, 2 of the 3 unrar packages aren't in my architecture, armhf.
To install the script yourself::::::::::::
https://github.com/jorricks/UNRAR
You need to pass the -archive parameter into the call to new() otherwise how will $rar_obj know which file it is supposed to be looking at?
I can't seem to be able to install unrar
That's not a particular good explanation of your problem. What did you try? What unexpected behaviour did you see?
From the tags on your question, it looks like you're running Debian. What do you see if you run sudo apt-get install unrar?
Update: My first comment was based on the code extract that you showed us. Looking at the full program code, I can see that %rar_conf has other values set in it (including the -archive option) before the section of code you gave us.
Looking at the source of the Archive::Rar module, it seems to assume that the program to use for dealing with the archives is called rar. So 7-Zip is not going to work.
In bash, executables such as mplayer and imagemagick's "convert" have a cool auto-complete functionality on their command line arguments. For instance, if I type
mplayer <tab><tab>
in one of my video folders, then mplayer will list all media files located in that folder, and only the media files.
Similarly, if I type
convert -<tab><tab>
then I will see all the possible options of the convert script, which is great.
My question is how to achieve a similar functionality, using bash, ruby or python scripts?
This is an example of BASH's smart completion. A basic description is here, a guide to writing your own extensions is here and another (Debian-based) guide is here. And here's a fuller featured introduction to the complete command (the command that facilitates this behaviour).
The link to writing your own extension in the accepted answer has gone dead. Quoting here from http://web.archive.org/web/20090409201619/http://ifacethoughts.net/2009/04/06/extending-bash-auto-completion/
Bash provides you a way of specifying your keywords, and using them to
auto complete command line arguments for your application. I use vim
as a wiki, task managemer and contacts. The vim helptags system lets
me index the content instead of searching through it, and the speed
shows it. One feature I wanted to add to this was to access these tags
from outside vim.
This can be done in a straight forward way:
$ vim -t tagname
This takes me directly to specific content marked using this tag. However, this will be more productive if I can provide
auto-completion for the tags.
I first defined a Bash function for the vim commandline. I added the
following code to my .bashrc file:
function get {
vim -t $1
} Now I can use get tagname command to get to the content.
Bash programmable completion is done by sourcing the
/etc/bash-completion script. The script lets us add our
auto-completion script /etc/bash-completion.d/ directory and executes
it whenever it is called. So I added a script file called get with the
following code in that directory.
_get()
{
local cur
COMPREPLY=()
#Variable to hold the current word
cur="${COMP_WORDS[COMP_CWORD]}"
#Build a list of our keywords for auto-completion using
#the tags file
local tags=$(for t in `cat /home/anadgouda/wiki/tags | \
awk '{print $1}'`; do echo ${t}; done)
#Generate possible matches and store them in the
#array variable COMPREPLY
COMPREPLY=($(compgen -W "${tags}" $cur))
}
#Assign the auto-completion function _get for our command get.
complete -F _get get Once the /etc/bash-completion is sourced, you will get auto-completion for the tags when you use the get command.
Along with my wiki I use it for all the documentation work and at
times the code too. I also use the tags file created from my code. The
indexing system lets me remember the context instead of the filenames
and directories.
You can tweak this system for any of the tools you use. All you need
to do is get a list of the keywords for your command and give it to
the Bash programmable completion system.
This functionality in bash is provided by bash-completion and similar functionality is included in zsh. If you want to add support for some program not currently supported by one of these tools, you need to write your own extensions for them.
How do I enable bash completion on Ubuntu?
sudo apt-get install bash-completion
source /etc/profile.d/bash_completion.sh
sudo apt i[TAB]