import org.springframework.security.crypto.keygen.BytesKeyGenerator; //导入依赖的package包/类
public AndroidAesBytesEncryptor(String password, CharSequence salt, BytesKeyGenerator ivGenerator) {
	PBEKeySpec keySpec = new PBEKeySpec(password.toCharArray(), Hex.decode(salt), 1024, 256);
	SecretKey secretKey = newSecretKey("PBEWITHSHA256AND256BITAES-CBC-BC", keySpec);
	this.secretKey = new SecretKeySpec(secretKey.getEncoded(), "AES");
	encryptor = newCipher(AES_ALGORITHM);
	decryptor = newCipher(AES_ALGORITHM);
	this.ivGenerator = ivGenerator;
}
 

import org.springframework.security.crypto.keygen.BytesKeyGenerator; //导入依赖的package包/类
public Base64StringKeyGenerator(BytesKeyGenerator keyGenerator) {
    this.keyGenerator = keyGenerator;
}
 

import org.springframework.security.crypto.keygen.BytesKeyGenerator; //导入依赖的package包/类
/**
 * Create a {@link BytesKeyGenerator} that uses a {@link SecureRandom} to generate keys of 8 bytes in length.
 */
public static BytesKeyGenerator secureRandom() {
	return new AndroidSecureRandomBytesKeyGenerator();
}
 

import org.springframework.security.crypto.keygen.BytesKeyGenerator; //导入依赖的package包/类
@Bean
public PasswordEncoder passwordEncoder() {
    BytesKeyGenerator keyGenerator = KeyGenerators.secureRandom();
    SecureRandom random = new SecureRandom(keyGenerator.generateKey());
    return new BCryptPasswordEncoder(10, random);
}
 

import org.springframework.security.crypto.keygen.BytesKeyGenerator; //导入依赖的package包/类
/**
 * Create a {@link BytesKeyGenerator} that returns a single, shared {@link SecureRandom} key of a custom length.
 * @param keyLength the key length in bytes, e.g. 16, for a 16 byte key.
 */
public static BytesKeyGenerator shared(int keyLength) {
	return new SharedKeyGenerator(secureRandom(16).generateKey());
}