Windows Command Line Generate Random Key

May 10, 2011 Generate Random Passwords from the Command Line. For the love of little green onions, DON’T run your random base64 output through md5, or sha256, or any other such hash, and DON’T use openssl rand -hex. Creating an SSH key on Windows 1. Check for existing SSH keys. You should check for existing SSH keys on your local computer. You can use an existing SSH key with Bitbucket Server if you want, in which case you can go straight to either SSH user keys for personal use or SSH access keys for system use. Open a command prompt, and run. Generating passphrase on the command line. It is also easy to generate random passwords and passphrase on the command line. This can be done with basic Unix commands. The generated passphrases are too complex to remember, but are very useful for applications where passphrases are needed for protecting machine keys and for SSH key management.

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The Tpmvscmgr command-line tool allows users with Administrative credentials to create and delete TPM virtual smart cards on a computer. For examples of how this command can be used, see Examples.

Syntax

Parameters for Create command

The Create command sets up new virtual smart cards on the user's system. It returns the instance ID of the newly created card for later reference if deletion is required. The instance ID is in the format ROOTSMARTCARDREADER000n where n starts from 0 and is increased by 1 each time you create a new virtual smart card.

Parameter	Description
/name	Required. Indicates the name of the new virtual smart card.
/AdminKey	Indicates the desired administrator key that can be used to reset the PIN of the card if the user forgets the PIN. DEFAULT Specifies the default value of 010203040506070801020304050607080102030405060708. PROMPT Prompts the user to enter a value for the administrator key. RANDOM Results in a random setting for the administrator key for a card that is not returned to the user. This creates a card that might not be manageable by using smart card management tools. When generated with RANDOM, the administrator key must be entered as 48 hexadecimal characters.
/PIN	Indicates desired user PIN value. DEFAULT Specifies the default PIN of 12345678. PROMPT Prompts the user to enter a PIN at the command line. The PIN must be a minimum of eight characters, and it can contain numerals, characters, and special characters.
/PUK	Indicates the desired PIN Unlock Key (PUK) value. The PUK value must be a minimum of eight characters, and it can contain numerals, characters, and special characters. If the parameter is omitted, the card is created without a PUK. DEFAULT Specifies the default PUK of 12345678. PROMPT Prompts to the user to enter a PUK at the command line.
/generate	Generates the files in storage that are necessary for the virtual smart card to function. If the /generate parameter is omitted, it is equivalent to creating a card without this file system. A card without a file system can be managed only by a smart card management system such as Microsoft Configuration Manager.
/machine	Allows you to specify the name of a remote computer on which the virtual smart card can be created. This can be used in a domain environment only, and it relies on DCOM. For the command to succeed in creating a virtual smart card on a different computer, the user running this command must be a member in the local administrators group on the remote computer.
/?	Displays Help for this command.

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Parameters for Destroy command

The Destroy command securely deletes a virtual smart card from the user's computer.

Warning

The public key, however, is meant to be saved on the servers you intend to access, in the “/.ssh/authorizedkeys” file (or rather, pasted/added to this file). To open this key, to copy, and then paste, wherever necessary, enter the following in Command Prompt. Authorized keys specify which users are allowed to log into a server using public key authentication in SSH. In OpenSSH, authorized keys are configured separately for each user, typically in a file called authorizedkeys. Sep 24, 2019 ssh-keygen -i -f iddsa2048a.pub.ssh/authorizedkeys. Server - generate Key / Public Key. Copy public key to client. Connect from server to client. But the.ssh/authorizedkeys is on the server and the public key is on the client. Or do you mean the public key should be scp'd to the server first, then run the ssh-keygen -i -f on it? Since the Windows 10 April 2018 update, Windows has shipped with a preinstalled OpenSSH client, which means you can use ssh-keygen to generate SSH keys. Read on as we walk you through the entire. May 23, 2019 Finally, the public key of the key pair must manually be placed onto the server you will SSH to. This is easiest to do via copy/paste into a Remote Desktop session. The public key should be named authorizedkeys and copied into the.ssh folder inside the profile folder of the user you are setting up. For example, c:usersmyuser.sshauthorizedkeys. Openssh windows generate authorized_keys pdf.

When a virtual smart card is deleted, it cannot be recovered.

Parameter	Description
/instance	Specifies the instance ID of the virtual smart card to be removed. The instanceID was generated as output by Tpmvscmgr.exe when the card was created. The /instance parameter is a required field for the Destroy command.
/?	Displays Help for this command.

Remarks

Membership in the Administrators group (or equivalent) on the target computer is the minimum required to run all the parameters of this command.

For alphanumeric inputs, the full 127 character ASCII set is allowed.

Examples

The following command shows how to create a virtual smart card that can be later managed by a smart card management tool launched from another computer.

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Alternatively, instead of using a default administrator key, you can create an administrator key at the command line. The following command shows how to create an administrator key.