com.aliyun.oss.crypto

类 CryptoScheme

java.lang.Object

com.aliyun.oss.crypto.CryptoScheme

直接已知子类:

AesCtr

public abstract class CryptoScheme
extends Object

字段概要

字段

限定符和类型	字段和说明
static CryptoScheme	AES_CTR
static int	BLOCK_SIZE

构造器概要

构造器

构造器和说明
CryptoScheme()

方法概要

方法

限定符和类型	方法和说明
abstract byte[]	adjustIV(byte[] iv, long dataStartPos)
CryptoCipher	createCryptoCipher(SecretKey cek, byte[] iv, int cipherMode, Provider provider)
static CryptoScheme	fromCEKAlgo(String cekAlgo)
abstract String	getContentChiperAlgorithm()
abstract int	getContentChiperIVLength()
abstract String	getKeyGeneratorAlgorithm()
abstract int	getKeyLengthInBits()
static byte[]	incrementBlocks(byte[] counter, long blockDelta) Increment the rightmost 64 bits of a 16-byte counter by the specified delta.
CryptoCipher	newCryptoCipher(Cipher cipher, SecretKey cek, int cipherMode) This is a factory method to create CryptoCipher.

从类继承的方法 java.lang.Object

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

字段详细资料

BLOCK_SIZE

public static final int BLOCK_SIZE

另请参阅:

常量字段值

AES_CTR

public static final CryptoScheme AES_CTR

构造器详细资料

CryptoScheme

public CryptoScheme()

方法详细资料

getKeyGeneratorAlgorithm

public abstract String getKeyGeneratorAlgorithm()

getKeyLengthInBits

public abstract int getKeyLengthInBits()

getContentChiperAlgorithm

public abstract String getContentChiperAlgorithm()

getContentChiperIVLength

public abstract int getContentChiperIVLength()

adjustIV

public abstract byte[] adjustIV(byte[] iv,
              long dataStartPos)

newCryptoCipher

public CryptoCipher newCryptoCipher(Cipher cipher,
                           SecretKey cek,
                           int cipherMode)

This is a factory method to create CryptoCipher.

createCryptoCipher

public CryptoCipher createCryptoCipher(SecretKey cek,
                              byte[] iv,
                              int cipherMode,
                              Provider provider)

incrementBlocks

public static byte[] incrementBlocks(byte[] counter,
                     long blockDelta)

Increment the rightmost 64 bits of a 16-byte counter by the specified delta. Both the specified delta and the resultant value must stay within the capacity of 64 bits. (Package private for testing purposes.)

参数:

counter - a 16-byte counter.

blockDelta - the number of blocks (16-byte) to increment

fromCEKAlgo

public static CryptoScheme fromCEKAlgo(String cekAlgo)