Roayat Ismail

An efficient Secure Electronic Mail System based on Elliptic Curve Certificateless Signcryption

Roayat Ismail, Lamiaa Abdelsalam, Mahmoud Ahmed, 2019 .

A Novel Proxy Signcryption Scheme and its Elliptic Curve Variant

Roayat Ismail, 2017 .

A New Efficient Multiple Broadcasters Signcryption Scheme (MBSS) for Secure Distributed Networks

Hassan M. Elkamchouchi, Roayat Ismail, Mohammed Nasr, 2009, 2009 Fifth International Conference on Networking and Services.

Secure and Fast Hashing Algorithm with Multiple Security Levels

Hassan M. Elkamchouchi, Roayat Ismail, Mohammed Nasr, 2009, J. Softw..

A new efficient strong proxy signcryption scheme based on a combination of hard problems

Hassan M. Elkamchouchi, Roayat Ismail, Mohammed Nasr, 2009, 2009 IEEE International Conference on Systems, Man and Cybernetics.

A New Efficient Multiple Messages Signcryption Scheme with Public Verifiability

Hassan M. Elkamchouchi, Roayat Ismail, Mohammed Nasr, 2009 .

A new efficient publicly verifiable signcryption scheme and its multiple recipients variant for firewalls implementation

Roayat Ismail, H. M. Elkamchouchi, H. Elkamchouchi, 2008, 2009 National Radio Science Conference.