Device bound encrypted data

A method of decrypting encrypted digital content, the method comprising:

• reading the encrypted digital content, helper data, and a first hash from a memory array,
• the first hash being generated based on the unencrypted digital content;
• selecting interested cells from the memory array based on the first hash;
• measuring an analog value associated with a physical property of the interested cells of the memory array;
• digitizing the measured analog value to generate an estimate of a response key;
• correcting the estimate of the response key using the helper data associated with the response key to reproduce the response key;
• generating a decryption key based at least on the response key;
• and decrypting the encrypted digital content based on the decryption key to generate unencrypted digital content.

A secure storage device, the device comprising:

• a memory array;
• and
• a processor configured to,
• calculate a first hash based on unencrypted digital content,
• select interested cells from the memory array based on the first hash,
• measure an analog value associated with a physical property of the interested cells of the memory array,
• digitize the measured analog value to generate a response key,
• generate an encryption key based at least on the response key,
• encrypt the unencrypted digital content to generate encrypted digital content based on the response key, and
• store the encrypted digital content.