de.profhenry.sshsig.core.spi

Interface SigningBackend<K>

Type Parameters:

K - the type for the key information

All Known Implementing Classes:

JcaSingingBackend

public interface SigningBackend<K>

SPI for signing backends.

The singing backend is responsible for the actual signing. The signing can be done by this class itself or might be delegated to some external process (like when using an SSH agent). Depending on this the passed key information might look different. In the first case the key information must contain the private key in the second case the public key (or even just some kind of identifier) might be sufficient.

Author:

profhenry

Nested Class Summary

Nested Classes

Modifier and Type	Interface and Description
static class	SigningBackend.SigningResult Data container for a signing result.

Method Summary

Modifier and Type	Method and Description
PublicKey	extractPublicKey(K someKeyInformation) Method for extracting the public key from the key information.
SigningBackend.SigningResult	signData(K someKeyInformation, byte[] someDataToSign) Method for signing data using the provided key information.

Method Detail

extractPublicKey

PublicKey extractPublicKey(K someKeyInformation)

Method for extracting the public key from the key information.

This is required because the public key gets encoded in the SSH signature.

Parameters:

someKeyInformation - the key information

Returns:

the public key

signData

SigningBackend.SigningResult signData(K someKeyInformation,
                                      byte[] someDataToSign)
                               throws SshSignatureException

Method for signing data using the provided key information.

Parameters:

someKeyInformation - the key information

someDataToSign - the blob to be signed

Returns:

the signing result

Throws:

SshSignatureException - in case the signing failed