Forgery of Provable Secure Short Signcryption Scheme

نویسنده

  • Chik How Tan
چکیده

In this paper, we analyse Ma signcryption scheme [4] proposed in Inscrypt’2006. Although Ma signcryption scheme [4] is probably secure against adaptive chosen ciphertext attacks and forgery, we show that Ma signcryption scheme is easily forgeable by the receiver and the receiver can impersonate the sender to forge any valid signcryption to any receiver. key words: cryptography, signcryption

برای دانلود رایگان 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

Certificate-Based Secure Three-Party Signcryption Scheme with Low Costs

A signcryption scheme combining public key encryption and digital signatures can simultaneously satisfy the security requirements of confidentiality, integrity, authenticity and non-repudiation. In a three-party communication environment, a message signcrypted by one party might have to be securely delivered to the other two and they usually independently decrypt the ciphertext and verify recov...

متن کامل

Post-Quantum Secure Hybrid Signcryption from Lattice Assumption

Motivated by the demand to have secure signcryption scheme, even in quantum era, the concept of signcryption tag-KEM (key encapsulation machine) is extended to lattice cryptography in this paper. A lattice-based hybrid signcryption scheme is proposed by building a lattice-based signcryption tag-KEM. Based on the hardness of the learning with errors problem and the short integer solution problem...

متن کامل

Generalization of Barreto et al ID based Signcryption Scheme

This paper presents an efficient and provable secure identity based generalized signcryption scheme based on [1] which can work as signcryption scheme, encryption scheme and signature scheme as per need. Its security is proved under the difficulty of q-BDHIP. A generalized signcryption scheme in multiple PKGs environment is also proposed.

متن کامل

Provable Secure Generalized Signcryption

Generalized Signcryption is a new cryptographic primitive which can work as an encryption scheme, a signature scheme or a signcryption scheme. We give security notions of Generalized Signcryption and improve a Generalized Signcryption scheme proposed by Han et al.We give the formal attacking model of this new cryptographic primitive in the framework of theory of provable security. At last, we g...

متن کامل

Efficient and Identity-based Signcryption with Provably-secure

The idea of signcryption is to provide a method to encrypt and sign data together, so it is more efficient than using an encryption scheme combined with a signature scheme. We present an identitybased signcryption solution, which is one of the most efficient, provably-secure schemes proposed to date. Our scheme admits provable security in the random oracle model under the bilinear DiffieHellman...

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

عنوان ژورنال:
  • IEICE Transactions

دوره 90-A  شماره 

صفحات  -

تاریخ انتشار 2007