com.aliyun.encryptionsdk.provider.dataKey

Class DefaultDataKeyProvider

java.lang.Object

com.aliyun.encryptionsdk.provider.BaseDataKeyProvider

com.aliyun.encryptionsdk.provider.dataKey.DefaultDataKeyProvider

public class DefaultDataKeyProvider
extends BaseDataKeyProvider

BaseDataKeyProvider 的一个实现，所有加密信息都保存在密文中

Field Summary

Fields inherited from class com.aliyun.encryptionsdk.provider.BaseDataKeyProvider

algorithm, handler, keyId, kms

Constructor Summary

Constructors

Constructor and Description
DefaultDataKeyProvider(String keyId)
DefaultDataKeyProvider(String keyId, CryptoAlgorithm algorithm)

Method Summary

Modifier and Type	Method and Description
CipherMaterial	getCipherMaterial(byte[] cipherText) 通过密文或数据密钥关键字获取数据密钥并生成密码材料
CipherMaterial	getCipherMaterial(InputStream inputStream)
byte[]	processCipherMaterial(CipherMaterial cipherMaterial) 处理密码材料生成字节数组，字节数组内容可能包含： 1.CipherMaterial 的所有内容 2.CipherMaterial 中的 CipherBody 部分（CipherHeader 部分由 AbstractExternalStoreDataKeyProvider 的实现自行处理）
void	writeCipherHeader(CipherHeader cipherHeader, OutputStream outputStream)

Methods inherited from class com.aliyun.encryptionsdk.provider.BaseDataKeyProvider

decryptDataKey, encryptDataKey, getAlgorithm, setAlgorithm, setAliyunKms, setFormatHandler, setMultiCmkId

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultDataKeyProvider

public DefaultDataKeyProvider(String keyId)

DefaultDataKeyProvider

public DefaultDataKeyProvider(String keyId,
                              CryptoAlgorithm algorithm)

Method Detail

getCipherMaterial

public CipherMaterial getCipherMaterial(byte[] cipherText)

Description copied from class: BaseDataKeyProvider

通过密文或数据密钥关键字获取数据密钥并生成密码材料

Specified by:

getCipherMaterial in class BaseDataKeyProvider

Parameters:

cipherText - 密文

Returns:

密码材料

getCipherMaterial

public CipherMaterial getCipherMaterial(InputStream inputStream)

Specified by:

getCipherMaterial in class BaseDataKeyProvider

processCipherMaterial

public byte[] processCipherMaterial(CipherMaterial cipherMaterial)

Description copied from class: BaseDataKeyProvider

处理密码材料生成字节数组，字节数组内容可能包含： 1.CipherMaterial 的所有内容 2.CipherMaterial 中的 CipherBody 部分（CipherHeader 部分由 AbstractExternalStoreDataKeyProvider 的实现自行处理）

Specified by:

processCipherMaterial in class BaseDataKeyProvider

Parameters:

cipherMaterial - 密码材料

Returns:

加密结果

writeCipherHeader

public void writeCipherHeader(CipherHeader cipherHeader,
                              OutputStream outputStream)

Specified by:

writeCipherHeader in class BaseDataKeyProvider