Method for putting a first device in secure communication with a second device

The method according to one of the preceding claims wherein:

• the first device (S) transmits a challenge to the second device,
• the second datum generated by the second device (P) comprises:
• a proof datum calculated from the private key (SKpicc) of the second device (P) and from the challenge,
• a datum calculated from the third datum (PK′),
• the first datum generated by the first device (S) also depends on the challenge datum.

Computer program product comprising program code instructions to execute the steps of a method for putting a first device (S) in secure communication with a second device (P), when this program is executed by at least one processor, wherein the first device (S) is configured to generate at least one first datum (K) dependent on a public key (PKpicc) specific to the second device (P) and dependent on a private key (SKpcd) specific to the first device (S), the method comprising:

• transmitting to the second device (P) a third datum (PK′) for the generation by the second device (P) of at least one second datum dependent on the transmitted third datum (PK′), and dependent on a private key (SKpicc) specific to the second device (P) associated with the public key (PKpicc) specific to the second device (P), the third datum (PK′) being dependent on a public key (PKpcd, maskedPK) specific to the first device (S), so that a test verifying whether the first and second data meet a predetermined condition can be implemented, and the first and second devices (S, P) only being put in secure communication if the condition is met,
• the computer program product being characterized in that the method further comprises a step of:
• generating the third datum (PK′), the third datum (PK′) taking on a value adapted so that the predetermined condition is met only if the input data (PIN′) are identical to reference secret data (PIN) associated with the second device (P).

Computer program product comprising program code instructions for execution of the steps of a method for putting a first device (S) in secure communication with a second device (P), when this program is executed by at least one processor, the method comprising steps of:

• generating at least one first datum (K) dependent on a private key specific to the first device (S) and dependent on a received public key (PKpicc),
• transmitting a public key (PKpcd) specific to the first device (S), associated with the private key specific to the first device (S), for the generation by the second device (P) of at least one second datum (K′) which is dependent on:
• a private key (SKpicc) specific to the second device (P), associated with the public key (PKpicc) specific to the second device (P), and
• a third datum (PK′), the third datum (PK′) being dependent on the transmitted public key (PKpcd),
• participating in a test verifying whether that the first and second data meet a predetermined condition, and putting in secure communication with the second device only if the predetermined condition is met,
• wherein the first datum (K) has a value adapted so that the predetermined condition is met only if reference secret data (PIN) associated with the second device (P) are identical to input data (PIN′).

Computer program product comprising program code instructions to execute the steps of a method for putting a first device (S) in secure communication with a second device (P) when this program is executed by at least one processor, the method comprising steps of:

• generating at least one first datum (K) dependent on a private key (SKpcd) specific to the first device (S), and from a public key (PKpicc) specific to the second device (P),
• generating a masked key (maskedPK), the masked key (maskedPK) being dependent on the private key (SKpcd) specific to the first device (S) and/or on a public key (PKpcd) specific to the first device (S) associated with the private key (PKpcd) specific to the first device (S),
• transmitting the masked key (maskedPK), for the generation by the second device (P) of at least one second datum (K′) dependent on:
• a private key (SKpicc) specific to the second device (P) associated with the public key (PKpicc) specific to the second device (P), and
• a third datum (PK′), the third datum (PK′) being dependent on the transmitted masked key (maskedPK),
• participating in a test verifying whether the first and second data meet a predetermined condition, and putting in secure communication with the second device (P) only if the predetermined condition is met,
• the computer program product is characterized in that the masked key (maskedPK) has a value adapted so that the predetermined condition is met only if the reference secret data (PIN) associated with the second device (P) are identical to input data (PIN′).