Example usage for java.security Certificate getPublicKey

Introduction

In this page you can find the example usage for java.security Certificate getPublicKey.

Prototype

public abstract PublicKey getPublicKey();

Source Link

Document

Returns the key of the principal-key pair being guaranteed by the guarantor.

Usage

From source file:cloudeventbus.pki.CertificateUtils.java

public static Certificate signCertificate(Certificate issuer, PrivateKey issuerPrivateKey,
        Certificate certificate) {
    if (issuer.getSerialNumber() != certificate.getIssuer()) {
        throw new CertificateIssuerMismatchException(
                "The authority certificate serial number doesn't much the certificate issuer.");
    }//from  ww  w . j  a  v  a2 s . c o m
    validatePermissions(issuer, certificate);
    final byte[] hash = certificate.hash();

    try {
        Cipher cipher = Cipher.getInstance("RSA");
        cipher.init(Cipher.ENCRYPT_MODE, issuerPrivateKey);
        final byte[] signature = cipher.doFinal(hash);
        return new Certificate(certificate.getType(), certificate.getSerialNumber(), certificate.getIssuer(),
                certificate.getExpirationDate(), certificate.getPublicKey(),
                certificate.getSubscribePermissions(), certificate.getPublishPermissions(),
                certificate.getComment(), signature);
    } catch (GeneralSecurityException e) {
        throw new CertificateSecurityException(e);
    }
}

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