Overview (SDK for Java)

If you have any questions during development, post them on the Issues page of GitHub.
OBS provides server-side encryption for objects, so that they will be encrypted or decrypted when you upload them to or download them from a bucket.
The encryption and decryption happen on the server side.
There are different encryption methods for you to choose from.
With SSE-KMS, OBS uses the keys provided by Key Management Service (KMS) for server-side encryption. You can create custom keys for SSE-KMS encryption.
With SSE-C, OBS uses the keys and MD5 values of the keys provided by customers for server-side encryption.
When server-side encryption is used, the returned ETag value is not the object's MD5 value. OBS will verify the object's MD5 value as long as the upload request includes the Content-MD5 header, no matter whether server-side encryption is used or not.
When server-side encryption is used, you are advised to use HTTPS to transmit and receive data.
For more information, see Server-Side Encryption.
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