Method of securely transmitting an image from an electronic identity document to a terminal

1. A transmission method for securely transmitting an image stored in a memory of an electronic identity document to a first terminal suitable for receiving said image, said method being performed by said electronic identity document, and comprising:

the electronic identity document receiving an attribute transmitted by the first terminal, wherein the attribute comprises information identifying the first terminal, about an operator of the first terminal, or about a transaction between the first terminal and the identity document that led to the receiving;

generating a marker on the basis of the attribute, such that:

information contained in the marker is the attribute, or

the marker contains a portion of the attribute, or

the marker is generated by performing a calculation on the basis of the attribute;

including said marker in the image, the inclusion modifying the value of at least one pixel of the image; and

transmitting the image containing said marker to the first terminal, such that the first terminal, the operator, or the transaction can be identified from any subsequent distribution of the image containing the marker by the first terminal.

2. A transmission method according to claim 1 , wherein the attribute comprises authentication data verified by the electronic identity document.

3. A transmission method according to claim 1 , wherein said attribute is at least one of the following: a date; a location of said first terminal; an identifier of said first terminal; an identifier of the operator of said first terminal; or any other attribute characterizing an exchange.

4. A transmission method according to claim 1 , wherein the including the marker modifies the visual appearance of said image.

5. A transmission method according to claim 1 , wherein the including the marker in the image is invisible to the naked eye with respect to a visual appearance of the image.

6. A transmission method according to claim 1 , wherein during the generating, the confidentiality of the marker is protected by encryption.

7. A transmission method according to claim 1 , wherein during the generating, the integrity and/or the authenticity of the marker is/are protected by the first terminal signing the attribute.

8. A transmission method according to claim 1 , wherein the electronic identity document is an electronic passport; and

wherein said attribute received by the electronic identity document is transmitted by the first terminal in compliance with the extended access control protocol specified by the TR 03110 v1.11 directives.

9. A non-transitory computer readable medium including instructions that perform the transmission method according to claim 1 , when said instructions are executed by the electronic identity document.

10. A non-transitory storage medium readable by the electronic identity document, the medium having recorded thereon a computer program including instructions for executing the transmission method according to claim 1 .

11. The transmission method according to claim 1 , further comprising:

receiving, by a second terminal, the image containing the marker; and

extracting the marker contained in said image.

12. The transmission method according to claim 11 , further comprising:

sending, by the second terminal, said marker to a first database; and

in response to sending said marker, recovering the attribute from said first database.

13. The transmission method according to claim 11 , comprising:

prior to the extracting, sending to a second database first data obtained from said received image and receiving second data in response to sending said first data; and

performed the extracting on the basis of said second data.

14. A transmission method according to claim 1 , wherein the inclusion modifies the image in irreversible manner.

15. A transmission method according to claim 1 , comprising the electronic identity document authenticating the first terminal, and creating a secure communication channel between the electronic identity document and the first terminal if the first terminal is authenticated successfully by the electronic identity document.

16. A transmission method according to claim 1 , wherein the marker is included in the image in imperceptible manner by steganographic coding, the maker being hidden in the values of the low-weight bits encoding the pixels of the image, or in the format of the image, using lossy compression.

17. A transmission method according to claim 1 , comprising a trusted third party verifying the authenticity of the first terminal before the electronic identity document receiving an attribute transmitted by the first terminal.

18. A transmission method according to claim 13 , wherein the second data comprises at least one of the following: the type of marker; the type of algorithm used for generating the marker; the location of the maker and the protection mode of said marker.

19. An electronic identity document for securely transmitting an image stored in a memory of the electronic identity document to a first terminal suitable for receiving said image, the electronic identity document comprising:

means for receiving an attribute transmitted by the first terminal, wherein the attribute comprises information identifying the first terminal, about an operator of the first terminal, or about a transaction between the first terminal and the identity document that led to the receiving;

means for generating a marker from the attribute, such that:

information contained in the marker is the attribute, or

the marker contains a portion of the attribute, or

the marker is generated by performing a calculation on the basis of the attribute;

means for including said marker in the image, the inclusion modifying the value of at least one pixel of the image; and

means for transmitting the image containing said marker to the first terminal, such that the first terminal, the operator, or the transaction can be identified from any subsequent distribution of the image containing the marker by the first terminal.

20. A second terminal for determining an attribute from a marker incorporated in an image, said second terminal comprising:

means for receiving the image containing the marker; and

means for extracting the marker contained in the image;

wherein the image containing the marker was created by an electronic identity document that performs a method comprising:

receiving an attribute transmitted by a first terminal, wherein the attribute comprises information identifying the first terminal, about an operator of the first terminal, or about a transaction between the first terminal and the identity document that led to the receiving;

generating the marker on the basis of the attribute, such that:

information contained in the marker is the attribute, or

the marker contains a portion of the attribute, or

the marker is generated by performing a calculation on the basis of the attribute;

including said marker in the image, the inclusion modifying the value of at least one pixel of the image; and

transmitting the image containing said marker such that the first terminal, the operator, or the transaction can be identified from any subsequent distribution of the image containing the marker by the first terminal.

21. The second terminal according to claim 20 , further comprising:

means for sending the marker to a first database; and

means for recovering, in response to sending said marker, the attribute from said first database.

22. The second terminal according to claim 20 , further comprising:

means for sending to a second database first data obtained from said received image and

means for receiving second data in response to sending said first data;

wherein said means for extracting performs the extracting on the basis of said second data.

23. A system comprising

an electronic identity document for securely transmitting an image stored in a memory of the electronic identity document to a first terminal suitable for receiving said image, the electronic identity document comprising:

means for receiving an attribute transmitted by the first terminal, wherein the attribute comprises information identifying the first terminal, about an operator of the first terminal, or about a transaction between the first terminal and the identity document that led to the receiving;

means for generating a marker from the attribute, such that:

information contained in the marker is the attribute, or

the marker contains a portion of the attribute, or

the marker is generated by performing a calculation on the basis of the attribute;

means for including said marker in the image, the inclusion modifying the value of at least one pixel of the image; and

means for transmitting the image containing said marker to the first terminal, such that the first terminal, the operator, or the transaction can be identified from any subsequent distribution of the image containing the marker by the first terminal; and

a second terminal for determining the attribute from the marker contained in the image, said second terminal comprising:

means for receiving the image containing the marker; and

means for extracting the marker contained in the image;

wherein the image containing the marker was created by the electronic identity document.