com.aliyun.encryptionsdk.cache

Class LocalDataKeyMaterialCache

java.lang.Object

com.aliyun.encryptionsdk.cache.LocalDataKeyMaterialCache

All Implemented Interfaces:

DataKeyCache

public class LocalDataKeyMaterialCache
extends Object
implements DataKeyCache

DataKeyCache 的默认实现，利用Java自带的 LinkedHashMap 实现的LRU 本地缓存

Nested Class Summary

Nested classes/interfaces inherited from interface com.aliyun.encryptionsdk.cache.DataKeyCache

DataKeyCache.DecryptEntry, DataKeyCache.EncryptEntry, DataKeyCache.UsageInfo

Constructor Summary

Constructors

Constructor and Description
LocalDataKeyMaterialCache()
LocalDataKeyMaterialCache(int capacity)

Method Summary

Modifier and Type	Method and Description
DataKeyCache.DecryptEntry	getDecryptEntry(String key) 从缓存中搜索一个与标识符匹配的解密密钥条目
DataKeyCache.EncryptEntry	getEncryptEntry(String key, DataKeyCache.UsageInfo usageInfo) 从缓存中搜索一个与标识符匹配的加密密钥条目
void	putDecryptEntry(String key, long survivalTime, DecryptionMaterial material) 向缓存中添加一个新的解密密钥材料
void	putEncryptEntry(String key, long survivalTime, EncryptionMaterial material, DataKeyCache.UsageInfo usageInfo) 向缓存中添加一个新的加密密钥材料

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

LocalDataKeyMaterialCache

public LocalDataKeyMaterialCache()

LocalDataKeyMaterialCache

public LocalDataKeyMaterialCache(int capacity)

Method Detail

getEncryptEntry

public DataKeyCache.EncryptEntry getEncryptEntry(String key,
                                                 DataKeyCache.UsageInfo usageInfo)

Description copied from interface: DataKeyCache

从缓存中搜索一个与标识符匹配的加密密钥条目

Specified by:

getEncryptEntry in interface DataKeyCache

Parameters:

key - 缓存标识符

usageInfo - 本次获取密钥材料增加的使用量

Returns:

加密材料条目

putEncryptEntry

public void putEncryptEntry(String key,
                            long survivalTime,
                            EncryptionMaterial material,
                            DataKeyCache.UsageInfo usageInfo)

Description copied from interface: DataKeyCache

向缓存中添加一个新的加密密钥材料

Specified by:

putEncryptEntry in interface DataKeyCache

Parameters:

key - 缓存标识符

survivalTime - 缓存最大生存时间

material - 加密密钥材料

usageInfo - 密钥初始使用情况

getDecryptEntry

public DataKeyCache.DecryptEntry getDecryptEntry(String key)

Description copied from interface: DataKeyCache

从缓存中搜索一个与标识符匹配的解密密钥条目

Specified by:

getDecryptEntry in interface DataKeyCache

Parameters:

key - 缓存标识符

Returns:

解密材料条目

putDecryptEntry

public void putDecryptEntry(String key,
                            long survivalTime,
                            DecryptionMaterial material)

Description copied from interface: DataKeyCache

向缓存中添加一个新的解密密钥材料

Specified by:

putDecryptEntry in interface DataKeyCache

Parameters:

key - 缓存标识符

survivalTime - 缓存最大生存时间

material - 解密密钥材料