Examples with JCERSAPrivateCrtKey org.bouncycastle.jce.provider.JCERSAPrivateCrtKey used on opensource projects

Example 1 with JCERSAPrivateCrtKey

use of org.bouncycastle.jce.provider.JCERSAPrivateCrtKey in project oxTrust by GluuFederation.

the class ManageCertificateAction method getKeyPair.

private KeyPair getKeyPair(String fileName) {
    KeyPair pair = null;
    JCERSAPrivateCrtKey privateKey = null;
    PEMParser r = null;
    FileReader fileReader = null;
    File keyFile = new File(getTempCertDir() + fileName.replace("crt", "key"));
    if (keyFile.isFile()) {
        try {
            fileReader = new FileReader(keyFile);
            r = new PEMParser(fileReader);
            Object keys = r.readObject();
            if (keys == null) {
                log.error(" Unable to read keys from: " + keyFile.getAbsolutePath());
                return null;
            }
            if (keys instanceof KeyPair) {
                pair = (KeyPair) keys;
                log.debug(keyFile.getAbsolutePath() + "contains KeyPair");
            } else if (keys instanceof JCERSAPrivateCrtKey) {
                privateKey = (JCERSAPrivateCrtKey) keys;
                log.debug(keyFile.getAbsolutePath() + "contains JCERSAPrivateCrtKey");
                BigInteger exponent = privateKey.getPublicExponent();
                BigInteger modulus = privateKey.getModulus();
                RSAPublicKeySpec publicKeySpec = new java.security.spec.RSAPublicKeySpec(modulus, exponent);
                PublicKey publicKey = null;
                try {
                    KeyFactory keyFactory = KeyFactory.getInstance("RSA");
                    publicKey = keyFactory.generatePublic(publicKeySpec);
                } catch (Exception e) {
                    e.printStackTrace();
                }
                pair = new KeyPair(publicKey, privateKey);
            } else {
                log.error(keyFile.getAbsolutePath() + " Contains unsupported key type: " + keys.getClass().getName());
                return null;
            }
        } catch (IOException e) {
            log.error(e.getMessage(), e);
            return null;
        } finally {
            try {
                r.close();
                fileReader.close();
            } catch (Exception e) {
                log.error(e.getMessage(), e);
                return null;
            }
        }
    } else {
        log.error("Key file does not exist : " + keyFile.getAbsolutePath());
    }
    log.debug("KeyPair successfully extracted from: " + keyFile.getAbsolutePath());
    return pair;
}