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December 2018

4 participants
2 discussions

Parsing DER from PE File
by Robert Simmons Dec. 31, 2018

Dec. 31, 2018

I've asked this question on Stack Overflow here: https://stackoverflow.com/q/53862702/1033217 I have compared my code to Dider Stevens's disitool here (examine the function ExtractDigitalSignature): https://github.com/DidierStevens/DidierStevensSuite/blob/master/disitool.py When I load that extracted file into a variable and try to parse it with cryptography, it fails. If I pipe the same file to openssl on the command line, it works. I am thinking this has to do with the number of certificates in the directory in the PE file. There can be three (cert, intermediate CA, and CA, etc). Any idea what's going on?

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Private Set Intersection
by Prashanth Ravindran Dec. 12, 2018

Dec. 12, 2018

Hi, I am trying to implement private set intersection using the cryptography library, and I would like to take the bytes of a private key and do a hash(key_material, message). 1) How do I get the bytes for an instance of cryptography.hazmat.backends.openssl.ec._EllipticCurvePrivateKey 2) Is there any way of encrypting a message using the above private key. Thanks, Prashanth

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