Verifying data object versions using authentication code

An apparatus, comprising:

• one or more memories storing processor-executable code;
• and
• one or more processors coupled with the one or more memories and individually or collectively operable to execute the code to cause the apparatus to:
• identify, in accordance with a data recovery operation, a set of data object versions stored in a cloud storage system and associated with a data object identifier;
• verify, using a cryptographic key, whether each data object version of the set of data object versions is associated with a respective valid signature stored in the cloud storage system, wherein a valid signature for a data object version of the set of data object versions is generated using a timestamp associated with upload of the data object version and the data object identifier;
• and
• obtain, from the set of data object versions, the data object version that is associated with the respective valid signature that is generated using a most recent timestamp among one or more timestamps associated with the set of data object versions.

A non-transitory computer-readable medium storing code, the code comprising instructions executable by one or more processors to:

• identify, in accordance with a data recovery operation, a set of data object versions stored in a cloud storage system and associated with a data object identifier;
• verify, using a cryptographic key, whether each data object version of the set of data object versions is associated with a respective valid signature stored in the cloud storage system, wherein a valid signature for a data object version of the set of data object versions is generated using a timestamp associated with upload of the data object version and the data object identifier;
• and
• obtain, from the set of data object versions, the data object version that is associated with the respective valid signature that is generated using a most recent timestamp among one or more timestamps associated with the set of data object versions.