python-cryptography

问题 I get an error when pip builds wheels for the cryptography package. Error: LINK : fatal error LNK1181: cannot open input file 'libssl.lib' error: command 'C:\\Program Files (x86)\\Microsoft Visual Studio\\2017\\BuildTools\\VC\\Tools\\MSVC\\14.16.27023\\bin\\HostX86\\x86\\link.exe' failed with exit status 1181 ---------------------------------------- ERROR: Failed building wheel for cryptography Running setup.py clean for cryptography Failed to build cryptography ERROR: Could not build wheels

问题 I am a little bit new to Docker and deployment cycle. I have Django application that we would like to deploy with uWSGI to docker container. Actually the deploy worked perfectly for a few weeks, but now it soundly report error... Error seam to be with cryptography package: build/temp.linux-x86_64-3.6/_openssl.c:52862:10: warning: conversion to 'long unsigned int' from 'long int' may change the sign of the result [-Wsign-conversion] build/temp.linux-x86_64-3.6/_openssl.c: In function '_cffi_f

问题 I am trying to sign the message in javascript using signMessage and verify it with python for implementing jwt authentication. This is the code for signing message in javascript using near-api-js window.signer = await new nearlib.InMemorySigner(window.walletAccount._keyStore) const mysign = await window.signer.signMessage("Amiya", window.walletAccount._authData.accountId, window.walletAccount._networkId) let mypubdata = "" mysign.publicKey.data.forEach( function (item,index){ if(item < 16) {

问题 There are a quite a few answers to this question covering a ton of different scenarios but I've yet to find a solution to the self-same issue. When I try to install pip install cryptography I get: generating cffi module 'build\temp.win-amd64-3.8\Release\_padding.c' creating build\temp.win-amd64-3.8 creating build\temp.win-amd64-3.8\Release generating cffi module 'build\temp.win-amd64-3.8\Release\_constant_time.c' generating cffi module 'build\temp.win-amd64-3.8\Release\_openssl.c' building '

问题 There are a quite a few answers to this question covering a ton of different scenarios but I've yet to find a solution to the self-same issue. When I try to install pip install cryptography I get: generating cffi module 'build\temp.win-amd64-3.8\Release\_padding.c' creating build\temp.win-amd64-3.8 creating build\temp.win-amd64-3.8\Release generating cffi module 'build\temp.win-amd64-3.8\Release\_constant_time.c' generating cffi module 'build\temp.win-amd64-3.8\Release\_openssl.c' building '

问题 I have a problem in hand to decrypt the AES encrypted cipher-text which specifications are following The cipher-text consists of: · 256 bytes of RFC2898-derived salt, followed by a message that was AES-encrypted using password, 'password' and derived IV. Sample Message is "This is my secret string, lorem ipsum" and password is "password" which is encrypted using C# code This message is decrypting fine with following c# code private static readonly int SALT_SIZE = 256; public static void

问题 This is the follow up of Import Modules in Nifi ExecuteScript I am new to python as well as nifi. I am trying to execute my python script in ExecuteScript processor. I want to access a server. so i used paramiko client. But when i run the processor, it shows "Import error No module named constant_time" at line session.write(). Though i have this constant_time.py under "/usr/local/lib/python2.7/dist-packages/ " I have also the path "/usr/local/lib/python2.7/dist-packages/ " in sys.path. I have

问题 I am basically deploying a flask app in app engine that uses pywebpush(https://github.com/web-push-libs/pywebpush). I followed the following tutorial to deploy(https://cloud.google.com/appengine/docs/standard/python/getting-started/python-standard-env) But i am constantly getting the error in app engine while it works fine in local system. The Error is: "from cryptography.hazmat.bindings._constant_time import lib ImportError: No module named _constant_time". Can Someone help me to over come

问题 I'm trying to verify a signature using the Python Cryptography library as stated here https://cryptography.io/en/latest/hazmat/primitives/asymmetric/rsa/ This is in the context of a client-server TCP chat app, and the client has calculated the signature, and sent it to the client to verify that it is indeed the correct server. The signature is passed to a function to verify. def VerifySignature(signature): with open("server_publickey.pem", "rb") as key_file: public_key = serialization.load

问题 I am trying to generate signed urls for AWS Cloudfront based on the example here. On the line private_key = serialization.load_pem_private_key( key_file.read(), password=None, backend=default_backend() ) I get the error UnsupportedAlgorithm: This backend does not support this key serialization. The full trace is as below: File "command_util.py", line 98, in rsa_signer backend=default_backend() File "runtime/cryptography/hazmat/primitives/serialization.py", line 20, in load_pem_private_key