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org.keycloak.jose.jws.JWSBuilder Maven / Gradle / Ivy
package org.keycloak.jose.jws;
import org.keycloak.jose.jws.crypto.HMACProvider;
import org.keycloak.jose.jws.crypto.RSAProvider;
import org.keycloak.util.Base64Url;
import org.keycloak.util.JsonSerialization;
import javax.crypto.SecretKey;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.security.PrivateKey;
/**
* @author Bill Burke
* @version $Revision: 1 $
*/
public class JWSBuilder {
String type;
String contentType;
byte[] contentBytes;
public JWSBuilder type(String type) {
this.type = type;
return this;
}
public JWSBuilder contentType(String type) {
this.contentType = type;
return this;
}
public EncodingBuilder content(byte[] bytes) {
this.contentBytes = bytes;
return new EncodingBuilder();
}
public EncodingBuilder jsonContent(Object object) {
try {
this.contentBytes = JsonSerialization.writeValueAsBytes(object);
} catch (IOException e) {
throw new RuntimeException(e);
}
return new EncodingBuilder();
}
protected String encodeHeader(Algorithm alg) {
StringBuilder builder = new StringBuilder("{");
builder.append("\"alg\":\"").append(alg.toString()).append("\"");
if (type != null) builder.append(",\"typ\" : \"").append(type).append("\"");
if (contentType != null) builder.append(",\"cty\":\"").append(contentType).append("\"");
builder.append("}");
try {
return Base64Url.encode(builder.toString().getBytes("UTF-8"));
} catch (UnsupportedEncodingException e) {
throw new RuntimeException(e);
}
}
protected String encode(Algorithm alg, byte[] data, byte[] signature) {
StringBuffer encoding = new StringBuffer();
encoding.append(encodeHeader(alg));
encoding.append('.');
encoding.append(Base64Url.encode(data));
encoding.append('.');
if (alg != Algorithm.none) {
encoding.append(Base64Url.encode(signature));
}
return encoding.toString();
}
protected byte[] marshalContent() {
return contentBytes;
}
public class EncodingBuilder {
public String none() {
byte[] data = marshalContent();
return encode(Algorithm.none, data, null);
}
public String rsa256(PrivateKey privateKey) {
byte[] data = marshalContent();
byte[] signature = RSAProvider.sign(data, Algorithm.RS256, privateKey);
return encode(Algorithm.RS256, data, signature);
}
public String rsa384(PrivateKey privateKey) {
byte[] data = marshalContent();
byte[] signature = RSAProvider.sign(data, Algorithm.RS384, privateKey);
return encode(Algorithm.RS384, data, signature);
}
public String rsa512(PrivateKey privateKey) {
byte[] data = marshalContent();
byte[] signature = RSAProvider.sign(data, Algorithm.RS512, privateKey);
return encode(Algorithm.RS512, data, signature);
}
public String hmac256(byte[] sharedSecret) {
byte[] data = marshalContent();
byte[] signature = HMACProvider.sign(data, Algorithm.HS256, sharedSecret);
return encode(Algorithm.HS256, data, signature);
}
public String hmac384(byte[] sharedSecret) {
byte[] data = marshalContent();
byte[] signature = HMACProvider.sign(data, Algorithm.HS384, sharedSecret);
return encode(Algorithm.HS384, data, signature);
}
public String hmac512(byte[] sharedSecret) {
byte[] data = marshalContent();
byte[] signature = HMACProvider.sign(data, Algorithm.HS512, sharedSecret);
return encode(Algorithm.HS512, data, signature);
}
public String hmac256(SecretKey sharedSecret) {
byte[] data = marshalContent();
byte[] signature = HMACProvider.sign(data, Algorithm.HS256, sharedSecret);
return encode(Algorithm.HS256, data, signature);
}
public String hmac384(SecretKey sharedSecret) {
byte[] data = marshalContent();
byte[] signature = HMACProvider.sign(data, Algorithm.HS384, sharedSecret);
return encode(Algorithm.HS384, data, signature);
}
public String hmac512(SecretKey sharedSecret) {
byte[] data = marshalContent();
byte[] signature = HMACProvider.sign(data, Algorithm.HS512, sharedSecret);
return encode(Algorithm.HS512, data, signature);
}
}
}