Public Key Generation What's It Look Like

  • Feb 26, 2018  GPG is the Gnu Privacy Guard and it is an implementation of OpenPGP (Open Pretty Good Privacy). It is an encryption technique that was originally developed for use in.
  • PuTTYgen is an key generator tool for creating SSH keys for PuTTY. It is analogous to the ssh-keygen tool used in some other SSH implementations. The basic function is to create public and private key pairs. PuTTY stores keys in its own format in.ppk files. However, the tool can also convert keys to and from other formats.
  • With modern versions of OpenSSH, the knownhosts file on the client contains a hash of the server name and public key, rather than the name and the public key directly. The reason for only storing a hash is that if someone obtains a copy of this file (e.g. Leaked backup), they can't discover which servers are recorded, i.e. They can't discover.
  • On some platforms, OpenSSL will save the.key file to the same directory from where the –req command was run. If you have yet to install the certificate and cannot find the key, it’s possible it’s gone. If you created the CSR but cannot locate your key file, the.
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The problem is when the key generation is done via private/public key pairs. You can have the software to check whether the generation is valid or not, but you can't generate a fake key (this is somewhat what the crypto locker virus did). Then again, you can crack the software to just SKIP the key validation. The Public and Private key pair comprise of two uniquely related cryptographic keys (basically long random numbers). Below is an example of a Public Key: 3048 0241 00C9 18FA CF8D EB2D EFD5 FD37 89B9 E069 EA97 FC20 5E35 F577 EE31 C4FB C6E4 4811 7D86 BC8F BAFA 362F 922B F01B 2F40 C744 2654 C0DD 2881 D673 CA2B 4003 C266 E2CD CB02 0301 0001. WHAT IS A BITCOIN ADDRESS? A bitcoin 'Address' is nothing more than a pairing of a public key (which you share with people to receive money, think of your public key as INBOUND ONLY traffic) and a private key (which cryptographically links to your public key, allowing you to spend said funds, OUTBOUND traffic).

Applies to:

SAP Netweaver PI based SFTP Adapters

Summary

The following sections briefly describe the steps to create SSH key pairs which can be used as an alternative for password based authentication. It also includes steps to verify key based authentication and import the keys in NWA key storage. It mainly foucses on creating PKCS12 Keys from OpenSSH Keys.

Author(s):

Sivasubramaniam Arunachalam

Company: SAP Labs
Created on: 30-Dec-2011
Author(s) Bio
Sivasubramaniam Arunachalam is a senior developer at SAP Labs (Technology Innovation Platform). He is currently occupied with PI 7.31 development/maintenace activities. Since Sivasubramaniam joined SAP Labs in July 2010, he has developed new features in several adapters/areas including File, JDBC, IDoc, SOAP/XI, HTTP, JPR, B2B(RNIF 1.1/2.0, CIDX & PIDX) Adapters, XML Validation and Mapping Runtime. Currently, he is the component responsible for File, JDBC, B2B Adapters and XML Validation and takes care of all new development, enhancement and maintenance activities.
Table of Contents

Serial key generator 7.0. Serial Key Generator 7.0Professional software registration toolSerial Key Generator is application created for software developers who want to protect their applications by serial key registration.

Tools Required

  • PuTTY Key Generator
  • PuTTY
  • Open SSL Utility
  • SSH Key Generator
  • Cygwin(for Windows Users) with the following packages
    • OpenSSL
    • SSH

Keys to be Generated

  • Public Key (OpenSSH Format)
  • Private Key (Putty Format)
  • Private Key (PEM)
  • Public Key (X.509 Certificate)
  • Private Key (PKCS 12)

Use PuTTY Key Generator to Create SSH Public/Private Keys

  • Download PuTTYgen.exe from http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html
  • Select SSH2-RSA as a key type
  • Click on 'Generate' and move your mouse cursor in 'Key' section to generate the keys based on random mouse move co-ordinates.
  • After the required mouse movements, it will generate the random key
  • Click 'Save public key' and save it as 'public_key' name
Public Key Generation What
  • It will look like below
  • Click 'Save private key' and save it as 'private_key.ppk' name

Public Key Generation What's It Look Like 2016

  • It will look like below
  • Leave Passphrase fields as blank and Select Conversions -> Export OpenSSH key
  • Ignore the warning by choosing 'Yes'
  • Save it under 'private_key.pem' name
  • It will look like below
  • The following keys are created

Use Open SSL to Create X.509 and P12 Certificates

  • If you are in windows, use Cygwin
  • Navigate to the location where the keys generated above are stored
  • Create the X509 certificate from the private key
  • It will look like below
  • Create the PKCS type 12 Keystore
  • Provide the password (which will be used in channel configuration)
  • The created key would be in encrypted (binary) form

Import the Private Key into NWA Key Store

  • Open the nwa key store and create a new view called SFTP_TEST
  • Click on 'Import Entry' and select the generated p12 file
  • After import, verify the entries.
Public

Configure the Public Key in SSH Server

  • Copy the public key in to SSH Server via SFTP
  • Login to SSH server verify the copied public key
  • Since the public key does not have any permissions, change it to 400 (for read)
  • Use ssh-keygen tool to create openSSH format public key
  • Add the created openSSH public key to authorized_keys filles
  • Check the permissions of .ssh folder and authorized_keys file for access permissions

Verify the Key Pairs with PuTTY

  • Now, the key based authentication can be verified with PuTTY.
  • Enter the host name and port

Public Key Generation What's It Look Like Now

  • Select the private key (.ppk)
  • Confirm the Security alert
  • If the configuration is correct, the connection will be established successfully