Enhanced secure low-level reader protocol based on session key update mechanism for RFID in IoT

Jun Yang; Pengpeng Yang; Ziyue Wang; Jianbin Li

doi:10.1504/ijwgs.2017.083386

Enhanced secure low-level reader protocol based on session key update mechanism for RFID in IoT

International Journal of Web and Grid Services ◽

10.1504/ijwgs.2017.083386 ◽

2017 ◽

Vol 13 (2) ◽

pp. 207 ◽

Cited By ~ 1

Author(s):

Jun Yang ◽

Pengpeng Yang ◽

Ziyue Wang ◽

Jianbin Li

Keyword(s):

Session Key ◽

Low Level ◽

Key Update

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An Enhanced Key Management Scheme for LoRaWAN

Cryptography ◽

10.3390/cryptography2040034 ◽

2018 ◽

Vol 2 (4) ◽

pp. 34 ◽

Cited By ~ 5

Author(s):

Jialuo Han ◽

Jidong Wang

Keyword(s):

Low Power ◽

Key Management ◽

Low Power Consumption ◽

Area Network ◽

Basic Requirement ◽

Wide Area Network ◽

Session Key ◽

Management Scheme ◽

Key Update ◽

High Degree

The LoRaWAN is one of the new low-power wide-area network (LPWAN) standards applied to Internet of Things (IoT) technology. The key features of LPWAN are its low power consumption and long-range coverage. The LoRaWAN 1.1 specification includes a basic security scheme. However, this scheme could be further improved in the aspect of key management. In this paper, LoRaWAN 1.1 security is reviewed, and enhanced LoRaWAN security with a root key update scheme is proposed. The root key update will make cryptoanalysis of security keys in LoRaWAN more difficult. The analysis and simulation show that the proposed root key update scheme requires fewer computing resources compared with other key derivation schemes, including the scheme used in the LoRaWAN session key update. The results also show the key generated in the proposed scheme has a high degree of randomness, which is a basic requirement for a security key.

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Tryptophan-Niacin Metabolism in Rat with Puromycin Aminonucleoside-Induced Nephrosis

International Journal for Vitamin and Nutrition Research ◽

10.1024/0300-9831.76.1.28 ◽

2006 ◽

Vol 76 (1) ◽

pp. 28-33 ◽

Cited By ~ 7

Author(s):

Yukari Egashira ◽

Shin Nagaki ◽

Hiroo Sanada

Keyword(s):

Body Weight ◽

Urinary Excretion ◽

Enzyme Activities ◽

Treated Group ◽

Control Group ◽

Puromycin Aminonucleoside ◽

Low Level ◽

Key Enzyme

We investigated the change of tryptophan-niacin metabolism in rats with puromycin aminonucleoside PAN-induced nephrosis, the mechanisms responsible for their change of urinary excretion of nicotinamide and its metabolites, and the role of the kidney in tryptophan-niacin conversion. PAN-treated rats were intraperitoneally injected once with a 1.0% (w/v) solution of PAN at a dose of 100 mg/kg body weight. The collection of 24-hour urine was conducted 8 days after PAN injection. Daily urinary excretion of nicotinamide and its metabolites, liver and blood NAD, and key enzyme activities of tryptophan-niacin metabolism were determined. In PAN-treated rats, the sum of urinary excretion of nicotinamide and its metabolites was significantly lower compared with controls. The kidneyα-amino-β-carboxymuconate-ε-semialdehyde decarboxylase (ACMSD) activity in the PAN-treated group was significantly decreased by 50%, compared with the control group. Although kidney ACMSD activity was reduced, the conversion of tryptophan to niacin tended to be lower in the PAN-treated rats. A decrease in urinary excretion of niacin and the conversion of tryptophan to niacin in nephrotic rats may contribute to a low level of blood tryptophan. The role of kidney ACMSD activity may be minimal concerning tryptophan-niacin conversion under this experimental condition.

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