com.qcloud.cos.internal.crypto.CryptoStorageMode Maven / Gradle / Ivy

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java sdk for qcloud cos

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package com.qcloud.cos.internal.crypto;

/**
 * Denotes the different storage modes available for storing the encryption information that
 * accompanies encrypted objects in COS. The encryption information includes an encrypted envelope
 * symmetric key, an initialization vector, and a description of the encryption materials used
 * during encryption.
 * 
 * ObjectMetadata is the default storage mode. If the ObjectMetadata mode is used, then encryption
 * information will be placed in the metadata of the encrypted object stored in COS. Note: There is
 * a 2 KB limit on the size of the metadata, so be careful that you do not run out of space if you
 * are storing a lot of your own metadata.
 * 
 * If the InstructionFile mode is used, then encryption information will be placed in a separate
 * instruction file that will be stored in the same bucket as the encrypted object in COS. No
 * metadata will be used for storing encryption information.
 */
public enum CryptoStorageMode {
    InstructionFile, 
    ObjectMetadata
}