Evaluation of Security Level of Cryptography: ESIGN Identification Scheme

Evaluation of Security Level of Cryptography: ESIGN Signature Scheme

How to Repair ESIGN

The ESIGN signature scheme was provided with an inadequate proof of security. We propose two techniques to repair the scheme, which we name ESIGN-D and ESIGN-R. Another improvement of ESIGN is encouraged, where the public key is hashed together with the message. This allows to have a security proof in the multi key setting. Additionally, the lower security of ESIGN compared to RSA-PSS leads to ...

An efficient secure channel coding scheme based on polar codes

In this paper, we propose a new framework for joint encryption encoding scheme based on polar codes, namely efficient and secure joint secret key encryption channel coding scheme. The issue of using new coding structure, i.e. polar codes in Rao-Nam (RN) like schemes is addressed. Cryptanalysis methods show that the proposed scheme has an acceptable level of security with a relatively smaller ke...

A Fast Publicly Verifiable Secret Sharing Scheme using Non-homogeneous Linear Recursions

A non-interactive (t,n)-publicly veriable secret sharing scheme (non-interactive (t,n)-PVSS scheme) is a (t,n)-secret sharing scheme in which anyone, not only the participants of the scheme, can verify the correctness of the produced shares without interacting with the dealer and participants. The (t,n)-PVSS schemes have found a lot of applications in cryptography because they are suitable for<...

On the Security of EPOC and TSH-ESIGN

We submitted a public-key encryption scheme, EPOC, and digital signature scheme, TSH-ESIGN, to IEEE P1363a. The security of EPOC and TSH-ESIGN is based on the intractability of factoring n = pq, where p and q are primes. TSH-ESIGN is also based on the intractability of the approximate e-th root (AERP) assumption, which is the approximate version of the RSA assumption. This draft describes the l...