API Operations Related to Server-Side Encryption

This section lists the operations related to server-side encryption and describes HTTP protocols applicable to the operations.

The following table describes the requirements on the transmission protocols used by the API operation related to server-side encryption.

**Table 3** Requirements for transfer protocol used by the CopyObject operation
Source Object	Target Object	Transfer Protocol
Non-encrypted object	Object encrypted using SSE-KMS	HTTPS
Object encrypted using SSE-KMS	Object encrypted using SSE-KMS	HTTPS
Object encrypted using SSE-C	Object encrypted using SSE-KMS	HTTPS
Non-encrypted object	Object encrypted using SSE-C	HTTPS
Object encrypted using SSE-KMS	Object encrypted using SSE-C	HTTPS
Object encrypted using SSE-C	Object encrypted using SSE-C	HTTPS
Non-encrypted object	Non-encrypted object	HTTP or HTTPS
Object encrypted using SSE-KMS	Non-encrypted object	HTTP or HTTPS
Object encrypted using SSE-C	Non-encrypted object	HTTP or HTTPS

**Table 4** Requirements for the transfer protocol used by the UploadPart-Copy operation
Source Object	Target Part	Transfer Protocol
Non-encrypted object	Part encrypted using SSE-KMS	HTTP or HTTPS
Object encrypted using SSE-KMS	Part encrypted using SSE-KMS	HTTP or HTTPS
Object encrypted using SSE-C	Part encrypted using SSE-KMS	HTTP or HTTPS
Non-encrypted object	Part encrypted using SSE-C	HTTPS
Object encrypted using SSE-KMS	Part encrypted using SSE-C	HTTPS
Object encrypted using SSE-C	Part encrypted using SSE-C	HTTPS
Non-encrypted object	Non-encrypted part	HTTP or HTTPS
Object encrypted using SSE-KMS	Non-encrypted part	HTTP or HTTPS
Object encrypted using SSE-C	Non-encrypted part	HTTP or HTTPS