spring security JwsHeader 源码
spring security JwsHeader 代码
文件路径：/oauth2/oauth2-jose/src/main/java/org/springframework/security/oauth2/jwt/JwsHeader.java
/*
* Copyright 2002-2021 the original author or authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.security.oauth2.jwt;
import java.util.Map;
import org.springframework.security.oauth2.jose.jws.JwsAlgorithm;
import org.springframework.util.Assert;
/**
* The JSON Web Signature (JWS) header is a JSON object representing the header parameters
* of a JSON Web Token, that describe the cryptographic operations used to digitally sign
* or create a MAC of the contents of the JWS Protected Header and JWS Payload.
*
* @author Joe Grandja
* @since 5.6
* @see <a target="_blank" href="https://tools.ietf.org/html/rfc7515#section-4">JWS JOSE
* Header</a>
*/
public final class JwsHeader extends JoseHeader {
private JwsHeader(Map<String, Object> headers) {
super(headers);
}
@SuppressWarnings("unchecked")
@Override
public JwsAlgorithm getAlgorithm() {
return super.getAlgorithm();
}
/**
* Returns a new {@link Builder}, initialized with the provided {@link JwsAlgorithm}.
* @param jwsAlgorithm the {@link JwsAlgorithm}
* @return the {@link Builder}
*/
public static Builder with(JwsAlgorithm jwsAlgorithm) {
return new Builder(jwsAlgorithm);
}
/**
* Returns a new {@link Builder}, initialized with the provided {@code headers}.
* @param headers the headers
* @return the {@link Builder}
*/
public static Builder from(JwsHeader headers) {
return new Builder(headers);
}
/**
* A builder for {@link JwsHeader}.
*/
public static final class Builder extends AbstractBuilder<JwsHeader, Builder> {
private Builder(JwsAlgorithm jwsAlgorithm) {
Assert.notNull(jwsAlgorithm, "jwsAlgorithm cannot be null");
algorithm(jwsAlgorithm);
}
private Builder(JwsHeader headers) {
Assert.notNull(headers, "headers cannot be null");
getHeaders().putAll(headers.getHeaders());
}
/**
* Builds a new {@link JwsHeader}.
* @return a {@link JwsHeader}
*/
@Override
public JwsHeader build() {
return new JwsHeader(getHeaders());
}
}
}
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