agent

type AddedKey struct {
	// PrivateKey must be a *rsa.PrivateKey, *dsa.PrivateKey or
	// *ecdsa.PrivateKey, which will be inserted into the agent.
	PrivateKey interface{}
	// Certificate, if not nil, is communicated to the agent and will be
	// stored with the key.
	Certificate *ssh.Certificate
	// Comment is an optional, free-form string.
	Comment string
	// LifetimeSecs, if not zero, is the number of seconds that the
	// agent will store the key for.
	LifetimeSecs uint32
	// ConfirmBeforeUse, if true, requests that the agent confirm with the
	// user before each use of this key.
	ConfirmBeforeUse bool
}

type Agent interface {
	// List returns the identities known to the agent.
	List() ([]*Key, error)

	// Sign has the agent sign the data using a protocol 2 key as defined
	// in [PROTOCOL.agent] section 2.6.2.
	Sign(key ssh.PublicKey, data []byte) (*ssh.Signature, error)

	// Add adds a private key to the agent.
	Add(key AddedKey) error

	// Remove removes all identities with the given public key.
	Remove(key ssh.PublicKey) error

	// RemoveAll removes all identities.
	RemoveAll() error

	// Lock locks the agent. Sign and Remove will fail, and List will empty an empty list.
	Lock(passphrase []byte) error

	// Unlock undoes the effect of Lock
	Unlock(passphrase []byte) error

	// Signers returns signers for all the known keys.
	Signers() ([]ssh.Signer, error)
}

type Key struct {
	Format  string
	Blob    []byte
	Comment string
}