SshAgentKeyConstraint (Apache Mina SSHD :: Core 2.11.0 API)

java.lang.Object
- org.apache.sshd.agent.SshAgentKeyConstraint

Direct Known Subclasses:

SshAgentKeyConstraint.Extension, SshAgentKeyConstraint.LifeTime
```
public abstract class SshAgentKeyConstraint
extends Object
```
A SshAgentKeyConstraint describes usage constraints for keys when being added to an SSH2 agent.

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description
`static class`	`SshAgentKeyConstraint.Extension`	An OpenSSH `SshAgentKeyConstraint` extension.
`static class`	`SshAgentKeyConstraint.FidoProviderExtension`	The OpenSSH "sk-provider@openssh.com" key constraint extension used for FIDO keys.
`static class`	`SshAgentKeyConstraint.LifeTime`	An OpenSSH lifetime constraint expires a key added to an SSH agent after the given number of seconds.

Field Summary

Fields
Modifier and Type Field Description

static SshAgentKeyConstraint CONFIRM
The singleton OpenSSH confirmation SshAgentKeyConstraint.

Constructor Summary

Constructors
Modifier Constructor Description

protected SshAgentKeyConstraint(byte id)
Constructor setting the agent protocol ID of the constraint.

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`byte`	`getId()`	Retrieves the protocol ID of this constraint.
`void`	`put(Buffer buffer)`	Writes this constraint into the given `Buffer`.

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Field Detail
  - CONFIRM
```
public static final SshAgentKeyConstraint CONFIRM
```
    The singleton OpenSSH confirmation SshAgentKeyConstraint. If set, the SSH agent is supposed to prompt the user before each use of a key in a signing operation.
    Users who have this option set via ssh config AddKeysToAgent confirm are responsible themselves for having configured their agent correctly so that it prompts in whatever way is appropriate.
    
    The OpenSSH agent prompts via via ssh-askpass or whatever program the environment variable SSH_ASKPASS defines. These prompts don't go through the prompting callback mechanisms of Apache MINA sshd.
- Constructor Detail
  - SshAgentKeyConstraint
```
protected SshAgentKeyConstraint(byte id)
```
    Constructor setting the agent protocol ID of the constraint.
    
    Parameters:
    
    id - for the key constraint
- Method Detail
  - getId
```
public byte getId()
```
    Retrieves the protocol ID of this constraint.
    
    Returns:
    
    the protocol id of this constraint
  - put
```
public void put(Buffer buffer)
```
    Writes this constraint into the given Buffer.
    
    Parameters:
    
    buffer - Buffer to write into at the current buffer write position