Data encryption and verification between master and slave

A method of processing data from a data sink, the method comprising:

• in a slave:
• receiving an address of the data sink from a master;
• reading data from the addressed data sink;
• applying a fourth code to the address, thereby forming a slave-encoded address;
• combining the read data with the slave-encoded address using a reversible function, thereby forming a data-address-combination;
• sending the data-address-combination to the master;
• applying a fifth code to the read data, thereby forming slave-encoded data;
• and
• sending the slave-encoded data to the master;
• and
• in the master:
• receiving the data-address-combination and the slave-encoded data from the slave;
• applying the fourth code to the address, thereby forming a master-encoded address;
• and
• reconstructing the data from the received data-address-combination by reversing the function using the master-encoded address, thereby forming reconstructed data.

A master, comprising:

• a data source configured to provide data;
• at least one processor configured to
• apply a first code to an address of an addressed data sink, thereby forming a master-encoded address;
• combine the data with the master-encoded address using a reversible function, thereby forming a data-address-combination,
• send the data-address-combination and the address from the master to a slave;
• apply a second code to the data, thereby forming master-encoded data;
• and
• send the master-encoded data from the master to the slave.

A master-slave-system, comprising:

• a master, comprising:
• a data source configured to provide data;
• at least one processor configured to
• apply a first code to an address of an addressed data sink, thereby forming a master-encoded address;
• combine the data with the master-encoded address using a reversible function, thereby forming a data-address-combination, and
• send the data-address-combination and the address from the master to a slave;
• a slave, comprising:
• at least one or more processors configured to
• apply the first code to the address received from the master, thereby forming a slave-encoded address;
• reconstruct the data from the data-address-combination by reversing the reversible function using the slave-encoded address;
• and
• a data sink configured to store the reconstructed data;
• and
• an interface connecting the slave to the master;
• wherein the at least one processor of the slave is further configured to:
• receive the master-encoded data from the master;
• verify an integrity of the stored data, comprising:
• applying the second code to the reconstructed data, thereby forming slave-encoded data;
• and
• comparing the master-encoded data with the slave-encoded data.

A master-slave-system, comprising:

• a slave, comprising:
• at least one processor configured to
• receive an address of a data sink from a master;
• read data from the addressed data sink;
• apply a fourth code to the address, thereby forming a slave-encoded address;
• combine the read data with the slave-encoded address using a reversible function, thereby forming a data-address-combination;
• and
• send the data-address-combination to the master;
• a master, comprising:
• at least one processor configured to
• receive the data-address-combination from the slave;
• apply the fourth code to the address, thereby forming a master-encoded address;
• reconstruct the data from the received data-address-combination by reversing the function using the master-encoded address, thereby forming reconstructed data;
• an interface connecting the slave to the master;
• wherein the at least one processor of the slave is further configured to
• apply a fifth code to the read data, thereby forming slave-encoded data;
• and
• send the slave-encoded data to a master;
• wherein the at least one processor of the master is further configured to apply the fifth code to the reconstructed data, thereby forming master-encoded data, and to compare the master-encoded data with the slave-encoded data.