This document proposes a one-time password (OTP) authentication scheme based on elliptic curves for Internet of Things (IoT) devices. It uses identity-based elliptic curve cryptography to design an OTP generation scheme based on Lamport's OTP algorithm. This proposed scheme requires fewer resources than existing schemes due to using a smaller key size and less infrastructure. Future work could explore using different prime numbers for encryption in satellite communications up to 128 bits. The document provides background on elliptic curves, Diffie-Hellman key exchange, and references for further reading.

1. OTP Authentication
Scheme based on
Elliptic Curves for Internet
of Things (IoT)
By:
Ms. Pooja Mehta
GTU PG School-CDAC-BISAG,
ME-IT Systems and Network Security
Gandhinagar

2. 2
 Abstract
 Introduction
 Proposed OTP Scheme Based on Identity Based Elliptic
Curve
 Future Work
 References
Content

3. 3
Abstract
 End-to-end communication
 Two-factor authentication mechanism
 OTP for IoT

4. 4
Introduction

5. 5
Cont..

6. 6
Proposed OTP Scheme Based On
Identity Based Elliptic Curve
 IBE-ECC to design a OTP scheme
 Proposed OTP Generation Scheme using Lamport’s
OTP Algorithm
Hn(x) = H(Hn-1(Hn-2(Hn-3(….H(x)))))

7. 7
Future Work
 Requires lesser resources for operation as compared
to the existing schemes with a smaller key size and
lesser infrastructure
 IRNSS is using Diffie – Hellman algorithm for
encryption in satellite communication
 Different prime numbers up to 2^128 bit

8.  Alice and Bob choose Y and modulus p
 Alice’s function : Y^A(mod p)
 Bob’s function : Y^B(mod p)
 Private key is : Y^AB = Y^BA (mod p)
 Eve cannot compute Y^AB from p, Y, Y^A,
Y^B
Diffie-Hellman
8

9. 9
References
 http://www.msr-
waypoint.com/enus/um/people/klauter/ieeefinal.pdf
 http://arstechnica.com/security/2015/10/how-the-nsa-can-
break-trillions-of-encrypted-web-and-vpn-connections/
 https://threatpost.com/prime-diffie-hellman-weakness-may-be-
key-to-breaking-crypto/115069/
 https://hackaday.com/tag/diffie-hellman/
https://www.schneier.com/blog/archives/2015/05/the_logjam_a
nd_.html
 https://weakdh.org/
http://www.slate.com/blogs/future_tense/2015/10/16/researcher
s_say_the_common_diffie_hellman_key_exchange_is_vulnerab
le_to.html

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Thank
you !