FIELD: physics, computer engineering.
SUBSTANCE: invention relates to information security. Disclosed is a method, comprising obtaining, from a computer, digital text of an electronic document and a clip of a handwritten signature of a user which is input using a stylus, and transmitting same to a microcontroller, where the microcontroller vocalises the text and outputs a synthesised audio signal to a speaker, obtaining from inertial sensors data on movement of the stylus when inputting the handwritten signature of the user and transmitting same to the microcontroller, where the microcontroller compares the clip of the handwritten signature of the user input by the stylus with data on the movement of the stylus when inputting the handwritten signature of the user and determining whether data from the inertial sensors matches the digital clip of the signature, in case of a positive comparison result and after completing vocalisation of the text, the trusted environment is considered provided and the microcontroller performs cryptographic operations of superimposing the digital signature on the digital clip of the handwritten signature and the digital electronic document using a secret key of the digital signature, the result is returned to the computer in the form of a digital signature.
EFFECT: invention improves reliability when signing a document with an analogue-digital signature.
6 cl, 2 dwg
