diffie-hellman | pure js diffie-hellman | Cryptography library

 by   crypto-browserify JavaScript Version: 5.0.3 License: MIT

kandi X-RAY | diffie-hellman Summary

kandi X-RAY | diffie-hellman Summary

diffie-hellman is a JavaScript library typically used in Security, Cryptography, Nodejs applications. diffie-hellman has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can install using 'npm i diffie-hellman' or download it from GitHub, npm.

diffie hellman
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            kandi-support Support

              diffie-hellman has a low active ecosystem.
              It has 73 star(s) with 25 fork(s). There are 9 watchers for this library.
              OutlinedDot
              It had no major release in the last 12 months.
              There are 6 open issues and 7 have been closed. On average issues are closed in 51 days. There are 3 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of diffie-hellman is 5.0.3

            kandi-Quality Quality

              diffie-hellman has 0 bugs and 0 code smells.

            kandi-Security Security

              diffie-hellman has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              diffie-hellman code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              diffie-hellman is licensed under the MIT License. This license is Permissive.
              Permissive licenses have the least restrictions, and you can use them in most projects.

            kandi-Reuse Reuse

              diffie-hellman releases are not available. You will need to build from source code and install.
              Deployable package is available in npm.

            Top functions reviewed by kandi - BETA

            kandi has reviewed diffie-hellman and discovered the below as its top functions. This is intended to give you an instant insight into diffie-hellman implemented functionality, and help decide if they suit your requirements.
            • Check the prime number of prime
            • find prime number generator
            • Creates a new DDI .
            • Returns an array of random prime numbers .
            • Initializes a new DH .
            • Simple implementation of check .
            • Set the pub key
            • Sets a private key of this private key .
            • Format the return value into a buffer .
            • Test a System
            Get all kandi verified functions for this library.

            diffie-hellman Key Features

            No Key Features are available at this moment for diffie-hellman.

            diffie-hellman Examples and Code Snippets

            No Code Snippets are available at this moment for diffie-hellman.

            Community Discussions

            QUESTION

            TLS v1.2 Cipher Suites in .NET 6 / GET Request Timeout
            Asked 2022-Mar-30 at 12:52

            I am currently trying to connect to an AWS REST API which requires at least TLS v1.2. The documentation stats that clients must also support cipher suites with perfect forward secrecy (PFS) such as Ephemeral Diffie-Hellman (DHE) or Elliptic Curve Ephemeral Diffie-Hellman (ECDHE).

            When sending a GET request using the HttpClient, the connection simply times out. I have set the TLS version explicitely to TLSv1.2 like this:

            ...

            ANSWER

            Answered 2022-Mar-30 at 12:52

            We finally found the reason for this. Windows did not have the required cypher suites enabled. We have used IISCrypto to enable the corresponding cypher suites and all is ok now.

            It looks like it's possible to force .NET to TLS 1.2, even though it was not enabled on the server itself.

            Source https://stackoverflow.com/questions/70338951

            QUESTION

            Jenkins: Git clone fails with no matching key exchange method found
            Asked 2022-Mar-24 at 13:52

            I'm using Jenkins version - 2.332.1 and i have problem with jenkins gerrit repository ssh clone. The details as follows,

            ...

            ANSWER

            Answered 2022-Mar-24 at 08:50

            On the server where the Jenkins controller is running (assuming it is the same as the one where you tested your ssh connection manually), add to the .bashrc

            Source https://stackoverflow.com/questions/71598285

            QUESTION

            Ansible SSH user change during playbook execution causes freeze
            Asked 2022-Mar-02 at 08:54

            I have a playbook that is launched from AWX with machine credentials, ie. with ssh_user_A. In this playbook, i need to perform a couple of tasks with another SSH user, ie. ssh_user_B.

            In terms of credentials, I have:

            • machine credentials for ssh_user_A that are OK, I can do whatever I need
            • a public/private keys couple for ssh_user_B:
              • the public key is present on the remote host in the ~ssh_user_B/.ssh/authorized_keys file
              • if I test this public/private key with a temp machine credentials (not possible in final target) and a dummy playbook or an ad-hoc module call, it works I can do whatever I need

            I change the SSH user in the playbook with these instructions:

            ...

            ANSWER

            Answered 2022-Mar-02 at 08:54

            I've made a lot of tests and found the problem: by default, to connect to the target hosts, Ansible uses the smart connection plugin. In my case, the smart plugin leads to the use of the native OpenSSH.

            Forcing manually the use of the paramiko connection plugin solves the problem, everything is OK (paramiko is a Python implementation of OpenSSH). Just need to add the instruction connection: paramiko at the needed level:

            Source https://stackoverflow.com/questions/71296805

            QUESTION

            Ansible to run commands via SSH on remote hosts
            Asked 2022-Feb-23 at 09:43

            I am having a problem connecting to some Checkpoint firewalls. They run a Linux, but I cannot install any Ansible.

            ...

            ANSWER

            Answered 2022-Feb-20 at 18:06

            According Ansible and Check Point and Getting started with Ansible and Check Point there are modules for management (Check_Point.Mgmt) available which seems all to connect over Web Services API.

            In your case you could just try with the raw module according Whats the difference between ansible raw, shell and command or with ansible_network_os=vyos or nxos according Ansible Network Examples.

            Source https://stackoverflow.com/questions/71186804

            QUESTION

            Connection reset when using jsch to connect to an sftp server hosted in azure
            Asked 2022-Feb-18 at 18:21

            we are currently working with a cloud product that uses JSCH internally to connect to external sftp sources. Im investigating an connection reset exception that we are getting when trying to connect to azure sftp.

            Using wireshark i determined that the problem occurs after we send the Client: Key Exchange Init. Establishing the same connection with filezilla we dont have this issue.

            comparing the packages from jsch and filezilla i didn't see an obivious issue, but im not an expert on the ssh protocol. im gonna post both requests below if somebody could give me any pointers it would be greatly appreciated.

            Request with JSCH (not working)

            Request with Filezilla (working)

            Response with Filezilla (working)

            See below for the log output:

            ...

            ANSWER

            Answered 2022-Feb-03 at 08:09

            i wanted to post a quick update for anybody that is having the same issue, i opened a similiar question on the microsoft q&a site and looks like it's an issue on the azure side that they are working on fixing for GA Microsoft Q&A

            Source https://stackoverflow.com/questions/70878675

            QUESTION

            Pysftp fails with "Authentication failed" and "Server did not send a server-sig-algs list; defaulting to our first preferred algo ('rsa-sha2-512')"
            Asked 2022-Jan-28 at 09:18

            I have ec2 instance with ubuntu v20.04 and it has python v3.8.10 and pysftp 0.2.9.

            I have generate .pem file from .ppk file using below command

            puttygen sftp_server.ppk -O private-openssh -o sftp_server.pem

            I am able to connect successfully to sftp server using command line-

            ...

            ANSWER

            Answered 2022-Jan-28 at 09:18

            The error comes form underlying Paramiko and is discussed here:
            Paramiko authentication fails with "Agreed upon 'rsa-sha2-512' pubkey algorithm" (and "unsupported public key algorithm: rsa-sha2-512" in sshd log)

            Though pysftp does not expose the disabled_algorithms parameter.

            You better switch to using Paramiko directly. The pysftp is abandoned project. See pysftp vs. Paramiko.

            Source https://stackoverflow.com/questions/70812056

            QUESTION

            Paramiko authentication fails with "Agreed upon 'rsa-sha2-512' pubkey algorithm" (and "unsupported public key algorithm: rsa-sha2-512" in sshd log)
            Asked 2022-Jan-13 at 14:49

            I have a Python 3 application running on CentOS Linux 7.7 executing SSH commands against remote hosts. It works properly but today I encountered an odd error executing a command against a "new" remote server (server based on RHEL 6.10):

            encountered RSA key, expected OPENSSH key

            Executing the same command from the system shell (using the same private key of course) works perfectly fine.

            On the remote server I discovered in /var/log/secure that when SSH connection and commands are issued from the source server with Python (using Paramiko) sshd complains about unsupported public key algorithm:

            userauth_pubkey: unsupported public key algorithm: rsa-sha2-512

            Note that target servers with higher RHEL/CentOS like 7.x don't encounter the issue.

            It seems like Paramiko picks/offers the wrong algorithm when negotiating with the remote server when on the contrary SSH shell performs the negotiation properly in the context of this "old" target server. How to get the Python program to work as expected?

            Python code

            ...

            ANSWER

            Answered 2022-Jan-13 at 14:49

            Imo, it's a bug in Paramiko. It does not handle correctly absence of server-sig-algs extension on the server side.

            Try disabling rsa-sha2-* on Paramiko side altogether:

            Source https://stackoverflow.com/questions/70565357

            QUESTION

            Break ssh command from within a script and save debug log to a file
            Asked 2022-Jan-10 at 17:29

            I am trying to write a bash script that runs ssh command with debug (ssh -vvv) against a specified host/hosts. I am not trying to login to the server, but rather just trying to see what all kex, mac and ciphers does the server offer.

            I did create a script to find the kex algos after negotiation using the -G option.

            ...

            ANSWER

            Answered 2022-Jan-09 at 12:17

            Get all supported algorithms for key exchange from remote ssh-server with nmap:

            Source https://stackoverflow.com/questions/70640902

            QUESTION

            convert base-64 spki string into public key
            Asked 2021-Dec-17 at 18:59

            I'm trying to find a python equivalent of this js function:

            ...

            ANSWER

            Answered 2021-Dec-17 at 18:59

            According to the documentation of the JavaScript library the line

            Source https://stackoverflow.com/questions/70394759

            QUESTION

            AWS Cognito network traffic flow related question
            Asked 2021-Dec-16 at 06:54

            We are in the process of setting up api gateway with Lamba function behind it. The setup uses aws cognito authorizer. We have the VPC endpoint for api gateway so that is reachable through private IP.

            But cognito does not support private links so we can't have the VPC endpoint for it. So this means the token issued by Cognito has to travel from https://ourdomain.auth.ap-southeast-2.amazoncognito.com to client over the internet.

            Cognito documentation says following for data in transit:-

            " Encryption in transit

            All requests to Amazon Cognito must be made over the Transport Layer Security protocol (TLS). Clients must support Transport Layer Security (TLS) 1.0 or later. We recommend TLS 1.2 or later. Clients must also support cipher suites with perfect forward secrecy (PFS) such as Ephemeral Diffie-Hellman (DHE) or Elliptic Curve Ephemeral Diffie-Hellman (ECDHE). Most modern systems such as Java 7 and later support these modes."

            According to above the token should be encrypted.

            But I have following questions:

            • Is TLS (1.2) enforced for Cognito?

            • with encryption in transit being available would security best practices still dictate having Cognito available through VPC endpoint so that the token does not need to travel on internet.

            • if a client application is coming from on-prem environment and accessing the api then if we make it go through a proxy in AWS then will the traffic remain in AWS backbone network or still flow through internet?

            ...

            ANSWER

            Answered 2021-Dec-16 at 06:54

            Is TLS (1.2) enforced for Cognito:

            Unfortunately, no. For most API calls you could use API gateway as a layer in between and enforce TLS1.2 there. However, for the AUTHORIZATION and TOKEN endpoints this does not work. Alternatively, you can enforce it for all endpoints by deploying cognito to the US regions and using the FIPS endpoints of cognito there. See https://docs.aws.amazon.com/general/latest/gr/cognito_identity.html for the available fips endpoints.

            with encryption in transit being available would security best practices still dictate having Cognito available through VPC endpoint so that the token does not need to travel on internet:

            That all depends on your risk apetite. For most organizations, encryption will be sufficient. However if your risk apetite is lower, you'll want extra mitigations, following the "defense in depth" best practice. Private connectivity is just one option if many you could add. Monitoring on suapicious user activity and adaptable MFA are other methods for example.

            if a client application is coming from on-prem environment and accessing the api then if we make it go through a proxy in AWS then will the traffic remain in AWS backbone network or still flow through internet?

            As the api endpoints are public, they will go over the internet (public ip address, so it's routed to a NAT gateway or internet gateway).

            Source https://stackoverflow.com/questions/70374591

            Community Discussions, Code Snippets contain sources that include Stack Exchange Network

            Vulnerabilities

            No vulnerabilities reported

            Install diffie-hellman

            You can install using 'npm i diffie-hellman' or download it from GitHub, npm.

            Support

            For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .
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          • HTTPS

            https://github.com/crypto-browserify/diffie-hellman.git

          • CLI

            gh repo clone crypto-browserify/diffie-hellman

          • sshUrl

            git@github.com:crypto-browserify/diffie-hellman.git

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