Systems and methods for securely identifying content

A computing device, comprising:

• a processor;
• a memory in electronic communication with the processor;
• and
• instructions stored in the memory, the instructions being executable to:
• stream subject data from a subject repository;
• store a subject length of the subject data;
• execute a hash function on the subject data to produce a subject hash value;
• stream content data from a content repository to provide a content stream, wherein the content repository is separate from the subject repository;
• execute the hash function on the content data from the content stream based on the subject length to produce a content hash value;
• detect whether the content data matches the subject data based on the subject hash value and the content hash value;
• and
• report a match detection in response to detecting that the content data matches the subject data.

A non-transitory, tangible computer-readable medium, comprising executable instructions for:

• streaming subject data from a subject repository;
• storing a subject length of the subject data;
• executing a hash function on the subject data to produce a subject hash value;
• streaming content data from a content repository to provide a content stream, wherein the content repository is separate from the subject repository;
• executing the hash function on the content data from the content stream based on the subject length to produce a content hash value;
• detecting whether the content data matches the subject data based on the subject hash value and the content hash value;
• and
• reporting a match detection in response to detecting that the content data matches the subject data.