com.qcloud.cos.internal.crypto

枚举 CryptoMode

java.lang.Object

java.lang.Enum<CryptoMode>

com.qcloud.cos.internal.crypto.CryptoMode

所有已实现的接口:

Serializable, Comparable<CryptoMode>

public enum CryptoMode
extends Enum<CryptoMode>

Denotes the different cryptographic modes available for securing an COS object via client-side encryption. Crypto mode can be configured via CryptoConfiguration when the COS encryption client is constructed.

枚举常量概要

枚举常量

枚举常量和说明
AesCtrEncryption Authenticated encryption mode using AES/CTR.
AuthenticatedEncryption Authenticated encryption mode using AES/GCM, AESWrap, etc.
StrictAuthenticatedEncryption Strictly enforce the use of authenticated encryption via AES/GCM, AESWrap, etc., and will throw security exception if an COS object retrieved is found to be not protected using authenticated encryption.

方法概要

限定符和类型	方法和说明
static CryptoMode	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static CryptoMode[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

AesCtrEncryption

public static final CryptoMode AesCtrEncryption

Authenticated encryption mode using AES/CTR. If you want to encrypt with Java SDK and decrypt with other COS SDKs, you must use this mode.

AuthenticatedEncryption

public static final CryptoMode AuthenticatedEncryption

Authenticated encryption mode using AES/GCM, AESWrap, etc. Please note the limitation on the maximum message size in bytes that can be encrypted under this mode is 2^36-32, or ~64G, due to the security limitation of AES/GCM as recommended by NIST.

StrictAuthenticatedEncryption

public static final CryptoMode StrictAuthenticatedEncryption

Strictly enforce the use of authenticated encryption via AES/GCM, AESWrap, etc., and will throw security exception if an COS object retrieved is found to be not protected using authenticated encryption. This means range-get operation is not supported in this mode, since range-get is not authenticated.

Please note the limitation on the maximum message size in bytes that can be encrypted under this mode is 2^36-32, or ~64G, due to the security limitation of AES/GCM as recommended by NIST.

方法详细资料

values

public static CryptoMode[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (CryptoMode c : CryptoMode.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static CryptoMode valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值