FIELD: data processing and transmission.
SUBSTANCE: technical result is achieved by sending an electronic message using the SMTP protocol from the mail relay; generating a second hash code of the said message using the sender's address, the recipient's address and the content or part of the contents of the said message received by the said mail relay, using said or another hash function; storing in a database record or verifying the presence of said second hash code in said database; storing in said electronic digital signature database data containing said second hash code.
EFFECT: technical result consists in increasing the level of protection against unauthorized recovery of an e-mail message according to the information for confirming the message sent.
8 cl, 1 dwg
