A simple lattice-based PKE scheme

نویسندگان

  • Limin Zhou
  • Zhengming Hu
  • Fengju Lv
چکیده

In this paper, we first present a new lattice-based PKE scheme on SIS, proving that it achieves CPA-security under DBi-ISIS assumption. Compared to some lattice-based schemes, ours has some advantages and is quite efficient as well as great simplicity. Similarly, we give a lattice-based PKE with multiple bits which is CPA secure under DBi-ISIS assumption. We hope that our contributions help to pave the way for the development of lattice-based PKEs in the future work.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Efficient Chosen-Ciphtertext Secure Public Key Encryption Scheme From Lattice Assumption

Using the Bonsai trees primitive and Gentry’s CPA-secure (chosen-plaintext attack) public-key encryption (PKE) scheme, we propose an efficient chosen-ciphtertext secure PKE scheme over lattice. If the decision variant of the learning with errors (LWE) problem is hard and the one-time signature used in this scheme is strong unforgeable, the proposed PKE scheme is indistinguishable against the ad...

متن کامل

Fully-Secure Lattice-Based IBE as Compact as PKE

We construct an identity-based encryption (IBE) scheme from the standard Learning with Errors (LWE) assumption, which both has a compact public-key (with size similar to known lattice-based PKE schemes) and also achieves adaptive security in the standard model. This improves over previous IBE schemes from lattices, which either have a public key that grows at least linearly with the length of t...

متن کامل

A Lattice-Based Universal Thresholdizer for Cryptographic Systems

We develop a general approach to thresholdizing a large class of (non-threshold) cryptographic schemes. We show how to add threshold functionality to CCA-secure public-key encryption (PKE), signature schemes, pseudorandom functions, and others primitives. To do so, we introduce a general tool, called a universal thresholdizer, from which many threshold systems are possible. The tool builds upon...

متن کامل

On the design and security of a lattice-based threshold secret sharing scheme

In this paper, we introduce a method of threshold secret sharing scheme (TSSS) in which secret reconstruction is based on Babai's nearest plane algorithm. In order to supply secure public channels for transmitting shares to parties, we need to ensure that there are no quantum threats to these channels. A solution to this problem can be utilization of lattice-based cryptosystems for these channe...

متن کامل

Certificateless Public Key Encryption ( CL - PKE ) Scheme Using Extended Chebyshev Polynomial over the Finite Field

In this paper, we introduce a new alternative model for a Certificateless Public Key Encryption (CL-PKE) scheme. Our proposed CL-PKE scheme uses the Identity Based Encryption (IBE) scheme extended over the finite field p to generate its encryption and decryption keys. The proposed system is applicable, secure, and reliable.

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره 5  شماره 

صفحات  -

تاریخ انتشار 2016