SYSTEM OF PROTECTED ELECTRONIC FLOW OF DOCUMENTS Russian patent published in 2017 - IPC G06F21/64 

FIELD: information technology.

SUBSTANCE: in the prior art, comprising: a storage unit of electronic messages, the first and second block forming electronic messages hash, signature key storage unit, the encryption unit, the communication channel, block decryption unit storing signature verification key hash value comparing unit codes emails additionally introduced: first and second extracting unit graphic objects, the first and second block separation alphanumeric objects, the first and second characteristics extracting unit stable graphical object in the first and second block selection steady signs alphanumeric objects, the first and second generation unit hash external representation of e-mails, block allocation reference hash code value of the internal representation of electronic messages, block for extracting reference values of hash codes of external representation of electronic messages, a unit for comparing values of hash codes of external representation of electronic messages.

EFFECT: expanding the functionality of the system of secure electronic document management by providing the ability to control both internal and external presentation of electronic documents.

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