spring security PasswordEncoder 源码
spring security PasswordEncoder 代码
文件路径：/crypto/src/main/java/org/springframework/security/crypto/password/PasswordEncoder.java
/*
* Copyright 2011-2016 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.crypto.password;
/**
* Service interface for encoding passwords.
*
* The preferred implementation is {@code BCryptPasswordEncoder}.
*
* @author Keith Donald
*/
public interface PasswordEncoder {
/**
* Encode the raw password. Generally, a good encoding algorithm applies a SHA-1 or
* greater hash combined with an 8-byte or greater randomly generated salt.
*/
String encode(CharSequence rawPassword);
/**
* Verify the encoded password obtained from storage matches the submitted raw
* password after it too is encoded. Returns true if the passwords match, false if
* they do not. The stored password itself is never decoded.
* @param rawPassword the raw password to encode and match
* @param encodedPassword the encoded password from storage to compare with
* @return true if the raw password, after encoding, matches the encoded password from
* storage
*/
boolean matches(CharSequence rawPassword, String encodedPassword);
/**
* Returns true if the encoded password should be encoded again for better security,
* else false. The default implementation always returns false.
* @param encodedPassword the encoded password to check
* @return true if the encoded password should be encoded again for better security,
* else false.
*/
default boolean upgradeEncoding(String encodedPassword) {
return false;
}
}
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