How do I create a M2Crypto DSA object given parameters and key values?

Posted by casey on Stack Overflow See other posts from Stack Overflow or by casey
Published on 2010-06-12T02:07:28Z Indexed on 2010/06/12 2:12 UTC
Read the original article Hit count: 327

Filed under:

python

|

m2crypto

Using M2Crypto I'd like to create a DSA_pub object for verifying a DSA signature. I know q, p, g, and the public key, but the only way I know to instantiate a DSA object is using:

dsa = DSA.set_params(q,p,g)
dsa.gen_key()

How do I assign the known public key?

© Stack Overflow or respective owner

Related posts about python

unmet dependencies in Ubuntu 12.04

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I tried today to install a dvb-card on my Ubuntu 12.04 (Linux blauhai-linux 3.2.0-25-generic #40-Ubuntu SMP Wed May 23 20:30:51 UTC 2012 x86_64 x86_64 x86_64 GNU/Linux ). The installation failed with an error. After that, i tried to install python (it was already installed but i got this error): linux:~$… >>> More
How can I get sikuli-ide to work?

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I installed sikuli-ide with sudo apt-get install sikuli-ide Everything was fine until I tried to start it from the terminal. I typed sikuli-ide But the only response I got was [info] locale: en_US The application was not started, furthermore there is no desktop file and sikuli-ide does not… >>> More
Getting PATH right for python after MacPorts install

as seen on Super User - Search for 'Super User'
I can't import some python libraries (PIL, psycopg2) that I just installed with MacPorts. I looked through these forums, and tried to adjust my PATH variable in $HOME/.bash_profile in order to fix this but it did not work. I added the location of PIL and psycopg2 to PATH. I know that Terminal is… >>> More
call python with system() in R to run a python script emulating the python console

as seen on Stack Overflow - Search for 'Stack Overflow'
I want to pass a chunk of Python code to Python in R with something like system('python ...'), and I'm wondering if there is an easy way to emulate the python console in this case. For example, suppose the code is "print 'hello world'", how can I get the output like this in R? >>> print… >>> More
Python - Calling a non python program from python?

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, I am currently struggling to call a non python program from a python script. I have a ~1000 files that when passed through this C++ program will generate ~1000 outputs. Each output file must have a distinct name. The command I wish to run is of the form: program_name -input -output -o1 -o2… >>> More

Related posts about m2crypto

socket.setdefaulttimeout interacting with M2Crypto connection

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello - I'm making a secure SSL connection to a server using python and M2Crypto. See code below. from M2Crypto import SSL, m2,x509 from M2Crypto.m2xmlrpclib import Server, SSL_Tranport ctx = SSL.Context() m2.ssl_ctx_use_pkey_privkey(ctx.ctx,myKey.pkey) m2.ssl_ctx_use_x509(ctx.ctx,myCert.x509) server… >>> More
How do I use m2crypto to validate a X509 certificate chain in a non-SSL setting

as seen on Stack Overflow - Search for 'Stack Overflow'
I'm trying to figure out how to, using m2crypto, validate the chain of trust from a public key version of a X509 certificate back to one of a set of known root CA's when the chain may be arbitrarily long. The SSL.Context module looks promising except that I'm not doing this in the context of a SSL… >>> More
How to digitally sign a message with M2Crypto using the keys within a DER format certificate

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi everyone. I am working on a project to implement digital signatures of outgoing messages and decided to use M2Crypto for that. I have a certificate (in DER format) from which I extract the keys to sign the message. For some reason I keep getting an ugly segmentation fault error when I call the… >>> More
s/mime v3 with M2Crypto

as seen on Stack Overflow - Search for 'Stack Overflow'
Dear list, I would like to send a mail with a s/mime v3 attachment through SMTP. The excellent HOWTO below describes the procedure in detail for s/mime v2. http://sandbox.rulemaker.net/ngps/m2/howto.smime.html I would greatly appreciate any help in doing the same for s/mime v3. Arye. >>> More
M2Crypto RSA.gen_key - feed a password from Python code

as seen on Stack Overflow - Search for 'Stack Overflow'
Hi, RSA.gen_key function always asks for password when it's used to generate keys. Is there a way to feed it the password from the python code instead of typing it manually? Thanks, -R >>> More