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• OctetSequenceKeyMaker.java

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org.mitre.jose.jwk.OctetSequenceKeyMaker Maven / Gradle / Ivy

/**
 * 
 */
package org.mitre.jose.jwk;

import java.security.SecureRandom;

import com.nimbusds.jose.Algorithm;
import com.nimbusds.jose.jwk.KeyUse;
import com.nimbusds.jose.jwk.OctetSequenceKey;
import com.nimbusds.jose.util.Base64URL;

/**
 * @author jricher
 *
 */
public class OctetSequenceKeyMaker {

	/**
	 * @param keySize in bits
	 * @return
	 */
    public static OctetSequenceKey make(Integer keySize, KeyUse use, Algorithm alg, String kid) {
    	
    	// holder for the random bytes
    	byte[] bytes = new byte[keySize / 8];
    	
    	// make a random number generator and fill our holder
    	SecureRandom sr = new SecureRandom();
    	sr.nextBytes(bytes);
    	
    	Base64URL encoded = Base64URL.encode(bytes);
    	
    	// make a key
		OctetSequenceKey octetSequenceKey = new OctetSequenceKey.Builder(encoded)
									.keyID(kid)
									.algorithm(alg)
									.keyUse(use)
									.build();

		return octetSequenceKey;
    }

}