  In Advanced Metering Infrastructure (AMI) systems, smart meters (SM) send
fine-grained power consumption information to the utility company, yet this
power consumption information can uncover sensitive information about the
consumers' lifestyle. To allow the utility company to gather the power
consumption information while safeguarding the consumers' privacy, different
methods that broadly utilize symmetric key and asymmetric key cryptography
operation have been generally utilized. In this paper, we propose an effective
method that uses symmetric key cryptography and hashing operation to gather
power consumption information. Moreover, provide the utility company with an
overview of the type of the appliances used by its power consumer and range of
power use. The idea is based on sending cover power consumption information
from the smart meters and removes these covers by including every one of the
smart meters' messages, with the goal that the utility can take in the
accumulated power consumption information, yet cannot take in the individual
readings. Our assessments show that the cryptographic operations required in
our scheme are substantially more effective than the operations required in
other schemes.
