Abstract: This disclosure relates to a method for securely transmitting secret information to a user, including receiving by the user terminal, from a secure processor, a software component protected against tampering and reverse-engineering and configured to generate sets of adjacent pixels having a probability lower than 100% to be in a visible or invisible state, executing the software component by the user terminal, at a frame display refresh rate, to generate the pixel sets at the display refresh rate, inserting the pixel sets generated by each execution of the software component into one respective image frame, and activating display of the image frames at the frame display refresh rate, the image frames including information which is machine unintelligible as being formed of the pixel sets, the information becoming intelligible to a user at the display refresh rate based on a human visual system.

Abstract: The invention relates to a transaction method, the method including the steps of: providing a terminal including a main processor, a graphic processor controlling a display, and a control member, the graphic processor including a memory bank which cannot be accessed from the outside; creating a link between the graphic processor and a secure processor, the link being secured by means of an encryption key shared only by the graphic processor and the secure processor; presenting first data to the user; collecting second data from commands entered by the user by means of the control member, in connection with the first data; transmitting the second data to the secure processor; and, if the user has been authenticated from the second data, carrying out the transaction, the secure link being used to transmit the first and/or second data, and/or to carry out the transaction.

Abstract: The invention relates to a transaction method, the method including the steps of: providing a tenninal including a main processor, a graphic processor controlling a display, and a control member, the graphic processor including a memory bank which cannot be accessed from the outside; creating a link between the graphic processor and a secure processor , the link being secured by means of an encryption key shared only by the graphic processor and the secure processor; presenting first data to the user; to collecting second data from commands entered by the user by means of the control member, in connection with the first data; transmitting the second data to the secure processor; and, if the user has been authenticated from the second data, carrying out the transaction, the secure link being used to transmit the first and/or second data, and/or to carry out the transaction.

Abstract: The invention relates to a transaction method, the method including the steps of: providing a tenninal including a main processor, a graphic processor controlling a display, and a control member, the graphic processor including a memory bank which cannot be accessed from the outside; creating a link between the graphic processor and a secure processor, the link being secured by means of an encryption key shared only by the graphic processor and the secure processor; presenting first data to the user; collecting second data from commands entered by the user by means of the control member, in connection with the first data; transmitting the second data to the secure processor; and, if the user has been authenticated from the second data, carrying out the transaction, the secure link being used to transmit the first and/or second data, and/or to carry out the transaction.