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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8. Note: this package includes the NTRU encryption algorithms.

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package org.bouncycastle.jcajce.spec;

import java.security.spec.EncodedKeySpec;

/**
 * OpenSSHPrivateKeySpec holds and encoded OpenSSH private key.
 * The format of the key can be either ASN.1 or OpenSSH.
 */
public class OpenSSHPrivateKeySpec
    extends EncodedKeySpec
{
    private final String format;

    /**
     * Accept an encoded key and determine the format.
     * 

* The encoded key should be the Base64 decoded blob between the "---BEGIN and ---END" markers. * This constructor will endeavour to find the OpenSSH format magic value. If it can not then it * will default to ASN.1. It does not attempt to validate the ASN.1 *

* Example: * OpenSSHPrivateKeySpec privSpec = new OpenSSHPrivateKeySpec(rawPriv); *

* KeyFactory kpf = KeyFactory.getInstance("RSA", "BC"); * PrivateKey prk = kpf.generatePrivate(privSpec); *

* OpenSSHPrivateKeySpec rcPrivateSpec = kpf.getKeySpec(prk, OpenSSHPrivateKeySpec.class); * * @param encodedKey The encoded key. */ public OpenSSHPrivateKeySpec(byte[] encodedKey) { super(encodedKey); if (encodedKey[0] == 0x30) // DER SEQUENCE { format = "ASN.1"; } else if (encodedKey[0] == 'o') { format = "OpenSSH"; } else { throw new IllegalArgumentException("unknown byte encoding"); } } /** * Return the format, either OpenSSH for the OpenSSH propriety format or ASN.1. * * @return the format OpenSSH or ASN.1 */ public String getFormat() { return format; } }





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