Example usage for org.bouncycastle.asn1.x509 RSAPublicKeyStructure RSAPublicKeyStructure

Introduction

In this page you can find the example usage for org.bouncycastle.asn1.x509 RSAPublicKeyStructure RSAPublicKeyStructure.

Prototype

public RSAPublicKeyStructure(ASN1Sequence seq) 

Source Link

Usage

From source file:cf.monteux.silvertunnel.netlib.layer.tor.util.Encryption.java

License:Open Source License

/**
 * makes RSA public key from bin byte array.
 *
 * @param b byte array that contains the key
 * @return/*from  w  ww .j av  a2 s  .  co  m*/
 * @see JCERSAPublicKey
 */
public static RSAPublicKey extractBinaryRSAKey(final byte[] b) {
    RSAPublicKey theKey;

    try {
        final ASN1InputStream ais = new ASN1InputStream(b);
        final Object asnObject = ais.readObject();
        final ASN1Sequence sequence = (ASN1Sequence) asnObject;
        final RSAPublicKeyStructure tempKey = new RSAPublicKeyStructure(sequence);
        theKey = getRSAPublicKey(tempKey.getModulus(), tempKey.getPublicExponent());
        ais.close();
    } catch (final IOException e) {
        logger.warn("Caught exception:" + e.getMessage());
        theKey = null;
    }

    return theKey;
}

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From source file:com.rovemonteux.silvertunnel.netlib.layer.tor.util.Encryption.java

License:Open Source License

/**
 * makes RSA public key from bin byte array.
 *
 * @param b byte array that contains the key
 * @return//w  w  w. j  av  a 2s .  co m
 * @see JCERSAPublicKey
 */
public static RSAPublicKey extractBinaryRSAKey(final byte[] b) {
    RSAPublicKey theKey;

    try {
        final ASN1InputStream ais = new ASN1InputStream(b);
        final Object asnObject = ais.readObject();
        final ASN1Sequence sequence = (ASN1Sequence) asnObject;
        final RSAPublicKeyStructure tempKey = new RSAPublicKeyStructure(sequence);
        theKey = getRSAPublicKey(tempKey.getModulus(), tempKey.getPublicExponent());
        ais.close();
    } catch (final IOException e) {
        LOG.warn("Caught exception:" + e.getMessage());
        theKey = null;
    }

    return theKey;
}

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From source file:org.jclouds.crypto.pem.PKCS1EncodedPublicKeySpec.java

License:Apache License

/**
 * Decode PKCS#1 encoded public key into RSAPublicKeySpec.
 * <p>// w w  w. j  a  v a2s  . com
 * Keys here can be in two different formats. They can have the algorithm
 * encoded, or they can have only the modulus and the public exponent.
 * <p>
 * The latter is not a valid PEM encoded file, but it is a valid DER encoded
 * RSA key, so this method should also support it.
 * 
 * @param keyBytes
 *           Encoded PKCS#1 rsa key.
 */
private void decode(final byte[] keyBytes) throws IOException {
    RSAPublicKeyStructure pks = null;
    ASN1Sequence seq = (ASN1Sequence) ASN1Object.fromByteArray(keyBytes);
    try {
        // Try to parse the public key normally. If the algorithm is not
        // present in the encoded key, an IllegalArgumentException will be
        // raised.
        SubjectPublicKeyInfo info = new SubjectPublicKeyInfo(seq);
        pks = new RSAPublicKeyStructure((ASN1Sequence) info.getPublicKey());
    } catch (IllegalArgumentException ex) {
        // If the algorithm is not found in the encoded key, try to extract
        // just the modulus and the public exponent to build the public key.
        pks = new RSAPublicKeyStructure(seq);
    }
    keySpec = new RSAPublicKeySpec(pks.getModulus(), pks.getPublicExponent());
}

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From source file:org.jruby.ext.openssl.x509store.BouncyCastleASN1FormatHandler.java

License:LGPL

private RSAPublicKey readRSAPublicKey(BufferedReader in, String endMarker) throws IOException {
    ByteArrayInputStream bAIS = new ByteArrayInputStream(readBytes(in, endMarker));
    ASN1InputStream ais = new ASN1InputStream(bAIS);
    Object asnObject = ais.readObject();
    ASN1Sequence sequence = (ASN1Sequence) asnObject;
    RSAPublicKeyStructure rsaPubStructure = new RSAPublicKeyStructure(sequence);
    RSAPublicKeySpec keySpec = new RSAPublicKeySpec(rsaPubStructure.getModulus(),
            rsaPubStructure.getPublicExponent());

    try {//from  ww w  .  j ava2s  . c o m
        KeyFactory keyFact = KeyFactory.getInstance("RSA");
        return (RSAPublicKey) keyFact.generatePublic(keySpec);
    } catch (NoSuchAlgorithmException e) {
        // ignore
    } catch (InvalidKeySpecException e) {
        // ignore
    }

    return null;
}

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From source file:org.opensc.pkcs15.asn1.attr.RSAPublicKeyChoice.java

License:Apache License

public RSAPublicKeyChoice(SubjectPublicKeyInfo spki) {
    this.spki = spki;

    try {//from w  ww . j  a  v a2 s.co  m
        RSAPublicKeyStructure pubKey = new RSAPublicKeyStructure((ASN1Sequence) spki.getPublicKey());

        this.raw = new RSAPublicKeyStructure(pubKey.getModulus(), pubKey.getPublicExponent());
    } catch (IOException e) {
        throw new IllegalArgumentException("invalid info structure in RSA public key");
    }
}

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From source file:org.silvertunnel.netlib.layer.tor.util.Encryption.java

License:Open Source License

/**
 * makes RSA public key from bin byte array
 * //w  ww . ja va  2 s .  com
 * @param s
 *            string that contais the key
 * @return
 * @see JCERSAPublicKey
 */
public static RSAPublicKey extractBinaryRSAKey(byte[] b) {
    RSAPublicKey theKey;

    try {
        ASN1InputStream ais = new ASN1InputStream(b);
        Object asnObject = ais.readObject();
        ASN1Sequence sequence = (ASN1Sequence) asnObject;
        RSAPublicKeyStructure tempKey = new RSAPublicKeyStructure(sequence);
        theKey = getRSAPublicKey(tempKey.getModulus(), tempKey.getPublicExponent());

    } catch (IOException e) {
        log.warning("Caught exception:" + e.getMessage());
        theKey = null;
    }

    return theKey;
}

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From source file:TorJava.Common.Encryption.java

License:Open Source License

/**
 * makes RSA public key from bin byte array
 * //www .j ava2 s. c o m
 * @param s
 *            string that contais the key
 * @return
 * @see JCERSAPublicKey
 */
public static RSAPublicKeyStructure extractBinaryRSAKey(byte[] b) {

    RSAPublicKeyStructure theKey;

    try {
        ASN1InputStream ais = new ASN1InputStream(b);
        Object asnObject = ais.readObject();
        ASN1Sequence sequence = (ASN1Sequence) asnObject;
        theKey = new RSAPublicKeyStructure(sequence);

    } catch (IOException e) {
        Logger.logDirectory(Logger.WARNING, "Caught exception:" + e.getMessage());
        theKey = null;
    }

    return theKey;
}

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