The innovative HB protocol of Juels and Weis [10] extends device authentication to low-cost RFID tags. However, despite the very simple on-tag computation there remain some practical problems with HB and despite an elegant proof of security against some limited active attacks, there is a simple man-in-the-middle attack due to Gilbert et al. [8]. In this paper we consider improvements to HB in t...

In this paper, we propose an enhanced version of the HB-MP authentication protocol, called the HB-MP protocol. The HB-MP protocol is a lightweight authentication protocol that is suitable for use in passive radio frequency identification (RFID) systems. The HB-MP protocol overcomes the man-in-the-middle attack to which the basic HB-MP protocol is vulnerable while maintaining its suitability to ...

With increased use of passive RFID tags, the need for secure lightweight identification protocols arose. HB+ is one such protocol, which was proven secure in the detection-based model, but shown breakable by man-in-the-middle attacks. Trusted-HB is a variant of HB+, specifically designed to resist man-in-the-middle attacks. In this paper, we discuss several weaknesses of Trusted-HB, show that t...

We propose a light-weight protocol for authentication of low-power devices. Our construc-tion PUF-HB merges the positive qualities of two families of authentication functions. PUFrepresents physically unclonable functions and fulfills the purpose of providing low-cost tamper-resilient challenge-response authentication. On the other hand, the Hopper Blum (HB) functionprovides...

background: beta thalassemia gene mutations are among common mutations in southwest iran. however, hemoglobin e (hb e) and hb e/β⁰ thalassemia account for a small number of hemoglobinopathies in iran. this is the first study to directly address the existence of hb e and consequently hb e/β⁰ thalassemia in southwest iran. methods: this retrospective study discovered seven cases of hb e/β⁰ thalas...

Several functional tests were performed to compare Hb A, Hb A2, and Hb Lepore Boston, which has a delta-beta crossover in the region of residues 87 to 116. Oxygen equilibrium curves determined by an automatic apparatus in 0.1 M potassium phosphate buffer, pH 7.0, at 20 degrees showed that the p50 was 5.8 mm Hg for Hb Lepore Boston, in contrast to 8.1 and 10.3 mm Hg for Hb A2 and Hb A, respectiv...

hepatoblastoma (hb) is a rare tumor of infancy and childhood manifesting with hepatomegaly and abdominal distention. it is seen with increased frequency in association with congenital hemihypertrophy and renal anomalies. metastases to other organs, including the lungs, lymph nodes and even ovaries is well known. but cerebral metastasis of this tumor, especially in the absence of metastasis to o...

congenital methemoglobinemia is a rare cause of cyanosis. we report a case of a girl, 17 years old with peripheral cyanosis and normal cardio-pulmonary system. she was diagnosed as a case of methemoglobinemia based on findings of polycythemia and hbm band on hemoglobin electrophoresis. we emphasize the importance of this rare entity in the differential diagnosis of cyanosis.