Agile OTP generation

• US 8,566,916 B1
• Filed: 10/30/2012
• Issued: 10/22/2013
• Est. Priority Date: 09/30/2010
• Status: Active Grant

• Current Assignee: RSA Security LLC (Symphony Technology Group LLC)
• Original Assignee: EMC Corporation (Dell Technologies Inc.)
• Inventors: Duane, William M, Vernon, Daniel Bailey, Brainard, John G, O'Malley, Michael J, Philpott, Robert S
• Primary Examiner(s): Nalven, Andrew L
• Assistant Examiner(s): Mehrmanesh, Amir
• Application Number:
  US13/663,535
• Time in Patent Office: 357 Days
• Field of Search: 726 5- 7, 726 9- 10, 726/20, 713/156, 713/168, 713184-185, 380/255, 380/259, 380/262
• US Class Current: 726/6
• CPC Class Codes: H04L 63/0435 wherein the sending and receiving network entities apply symmetric encryption, i.e. same key used for encryption and decryption cryptographic mechanisms or cryptographic arrangements for symmetric key encryption H04L9/06
• CPC Class Codes: H04L 63/0823 using certificates cryptographic mechanisms or cryptographic arrangements for entity authentication involving certificates H04L9/3263
• CPC Class Codes: H04L 63/0838 using one-time-passwords
• CPC Class Codes: H04L 9/003 for power analysis, e.g. differential power analysis [DPA] or simple power analysis [SPA]
• CPC Class Codes: H04L 9/3228 One-time or temporary data, i.e. information which is sent for every authentication or authorization, e.g. one-time-password, one-time-token or one-time-key
• CPC Class Codes: H04L 9/3234 involving additional secure or trusted devices, e.g. TPM, smartcard, USB or software token network architectures or network communication protocols for supporting authentication of entities using an additional device in a packet data network H04L63/0853

Abstract

A method, system, and apparatus for agile generation of one time passcodes (OTPs) in a security environment, the security environment having a token generator comprising a token generator algorithm and a validator, the method comprising generating a OTP at the token generator according to a variance technique; wherein the variance technique is selected from a set of variance techniques, receiving the OTP at a validator, determining, at the validator, the variance technique used by the token generator to generate the OTP, and determining whether to validate the OTP based on the OTP and variance technique.

Claims

1. A method for agile generation of one time passcodes (OTPs) in a security environment, the security environment having a token generator comprising a token generator algorithm and a validator, the method comprising:

generating an OTP at the token generator according to a variance technique;

wherein the variance technique is selected from a set of variance techniques;

where the variance technique is given by the function OTP=H(F(SKC, SKPC), InputSet) and wherein the InputSet is a set comprising K and C;

wherein H is a Hash;

wherein K is a key;

wherein C is a unique value for the generation of the OTP at the token generator;

SKC is a Symmetric Key certificate, F is a function for use in a variance technique for OTP generation, SKPC is a Symmetric Key Policy Certificate;

receiving the OTP at a validator;

determining, at the validator, the variance technique from a plurality of possible variance techniques used by the token generator to generate the OTP; and

determining whether to validate the OTP based on the OTP and variance technique.

2. The method of claim 1 wherein the validator determines the variance technique of the set of variance techniques by using an information file containing information about the token.

3. The method of claim 1 wherein information about one of the variance techniques of the set of variance techniques is encoded in the OTP.

4. The method of claim 1 wherein the variance technique is switching among a plurality of OTP generation algorithms.

5. The method of claim 1 wherein the variance technique is obtained from the environment of the OTP generator.

6. The method of claim 1 wherein the variance technique is obtained from variances within the OTP generator.

7. The method of claim 2 wherein the information file is a certificate.

8. The method of claim 1 wherein C is a monotonic value.

9. The method of claim 1 wherein C is a counter.

10. A system for agile generation of one time passcodes (OTPs) in a security environment, the system comprising:

a token generator comprising a token generator algorithm;

wherein the token generator algorithm generates an OTP at the token generator according to a variance technique;

wherein the variance technique is selected from a set of variance techniques;

where the variance technique is given by the function OTP=H(F(SKC, SKPC), InputSet) and wherein the InputSet is a set comprising K and C;

wherein H is a Hash;

wherein K is a key;

wherein C is a unique value for the generation of the OTP at the token generator;

SKC is a Symmetric Key certificate, F is a function for use in a variance technique for OTP generation, SKPC is a Symmetric Key Policy Certificate;

a validator; and

computer-executable program code operating in memory, wherein the computer-executable program code is configured to enable execution of;

receiving the OTP at a validator;

determining, at the validator, the variance technique from a plurality of possible variance techniques used by the token generator to generate the OTP; and

determining whether to validate the OTP based on the OTP and variance technique.

11. The system of claim 10 wherein the validator determines the variance technique of the set of variance techniques by using an information file containing information about the token generator.

12. The system of claim 10 wherein information about one of the variance techniques of the set of variance techniques is encoded in the OTP.

13. The system of claim 10 wherein the variance technique is switching among a plurality of OTP generation algorithms.

14. The system of claim 10 wherein the variance technique is obtained from the environment of the OTP generator.

15. The system of claim 10 wherein the variance technique is obtained from variances within the OTP generator.

16. The system of claim 10 wherein the information file is a certificate.

17. The system of claim 10 wherein C is a monotonic value.