Encryption Description

If you have any questions during development, post them on the Issues page of GitHub.

The following table lists APIs related to server-side encryption:

API Method in OBS C SDK	Description	Supported Encryption Type	Transmission Protocol
put_object	Sets the encryption algorithm and key during object upload to enable server-side encryption.	SSE-KMS SSE-C	HTTPS
get_object	Sets the decryption algorithm and key during object download to decrypt the object.	SSE-KMS SSE-C	HTTPS
copy_object	Sets the decryption algorithm and key for decrypting the source object during object copy. Sets the encryption algorithm and key during object copy to enable the encryption algorithm for the target object.	SSE-KMS SSE-C	When the target object is a non-encrypted object: HTTP or HTTPS. HTTPS in other cases.
get_object_metadata	Sets the decryption algorithm and key when obtaining the object metadata to decrypt the object.	SSE-KMS SSE-C	When the encryption type is SSE-KMS: HTTP or HTTPS. HTTPS in other cases.
initiate_multi_part_upload	Sets the encryption algorithm and key when initializing a multipart upload to enable server-side encryption for the final object generated.	SSE-KMS SSE-C	HTTPS
upload_part	Sets the encryption algorithm and key during multipart upload to enable server-side encryption for parts.	SSE-KMS SSE-C	HTTPS
complete_multi_part_upload	Sets the encryption algorithm and key during part combination to enable server-side encryption after it.	SSE-KMS SSE-C	HTTP or HTTPS
copy_part	Sets the decryption algorithm and key for decrypting the source object during multipart copy. Sets the encryption algorithm and key during multipart copy to enable the encryption algorithm for the target part.	SSE-KMS SSE-C	HTTPS

Parameter Description

The following table describes the encryption and decryption parameters for server_side_encryption_params.

Field	Type	Description
encryption_type	obs_encryption_type	Encryption mode: OBS_ENCRYPTION_KMS: SE-KMS; OBS_ENCRYPTION_SSEC: SSE-C
kms_server_side_encryption	char *	Indicates that SSE-KMS is used. Objects are encrypted using SSE-KMS.
kms_key_id	char *	Indicates the master key ID of an encrypted object. This parameter is used in SSE-KMS mode. If the customer does not provide the master key ID, the default master key ID will be used.
ssec_customer_algorithm	char *	Indicates the algorithm used to encrypt an object. The parameter is used in SSE-C mode.
ssec_customer_key	char *	Indicates the key used to encrypt an object. The parameter is used in SSE-C mode.
des_ssec_customer_algorithm	char *	Indicates the algorithm used to decrypt a source object. The parameter is used in SSE-C mode.
des_ssec_customer_key	char *	Indicates the key used to decrypt a source object. The parameter is used in SSE-C mode.