net.adamcin.httpsig.ssh.jce

Class Magic

java.lang.Object

net.adamcin.httpsig.ssh.jce.Magic

public final class Magic
extends Object

Implementation of peculiar SSH byte array algorithms

Constructor Summary

Constructors

Constructor and Description
Magic()

Method Summary

Modifier and Type	Method and Description
static byte[]	dssPadSignature(byte[] signatureBytes) Pad r and s to 160-bit (20 byte) integers
static byte[]	dssUnpadSignature(byte[] signatureBytes) Remove padding from 160-bit integers, r and s
static byte[]	extractSignatureFromDER(byte[] signatureBytes)
static String	getFingerprint(byte[] keyBlob) Computes the MD5 fingerprint of the public key blob

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Magic

public Magic()

Method Detail

getFingerprint

public static String getFingerprint(byte[] keyBlob)

Computes the MD5 fingerprint of the public key blob

Parameters:

keyBlob - base64-decoded byte array containing the public key spec

Returns:

MD5 fingerprint as a string

See Also:

[RFC4716] Section 4: Public Key Fingerprints

extractSignatureFromDER

public static byte[] extractSignatureFromDER(byte[] signatureBytes)

dssPadSignature

public static byte[] dssPadSignature(byte[] signatureBytes)

Pad r and s to 160-bit (20 byte) integers

Parameters:

signatureBytes - data for unpadded signature

Returns:

padded signature data

dssUnpadSignature

public static byte[] dssUnpadSignature(byte[] signatureBytes)

Remove padding from 160-bit integers, r and s

Parameters:

signatureBytes - data for padded signature

Returns:

unpadded signature data