I have successfully constructed RSA2 key by splitting private key blob into n, e, d, p, q values with the following code: I did not get any error. However, when I’m trying to decrypt data with this key I get an error: incorrect decryption. I use this piece of code: At the same time I see that standart w…
Tag: rsa
trying to convert Java RSA-PSS signature verification code (with SHA256 hash, SHA1 MGF hash) to Python
Here’s my Java code, which successfully verifies the signature, as expected. The full code (with the imports, keys, message and signature) can be seen at https://pastebin.com/PmhGDaPv in case you want to try to reproduce the issue. My Python code, which does not verify the signature, as expected: The fu…
unable to use OAEP decryption in python
Here’s my code: Here’s the error I get: What am I doing wrong? I’m running Python 3.8.3. Answer The mgfunc parameter (3rd parameter) for the mask generation function is incorrectly specified in the posted code. According to the description of Crypto.Cipher.PKCS1_OAEP.new(): mgfunc (callable)…
Cannot decode encrypted rsa message python3
I’m encoding a message with rsa.encrypt but then I cannot convert the encrypted data to a str with .decode(). That’s a bit strange because the encrypted data is a bytes string and there shouldn’t be any problem converting that to a str. data = [self.id, data, self.my_pubkey] # actually don&#…
extracting public key from certificate and encrypting data
This is for a homework assignment! I get the server’s certificate using get_peer_certificate() and the calling dump_certificate to dump the certificate in a variable. The format is PEM and looks right to me. How do I extract the server’s public key from this file (‘server.pubkey’) and …