scholarly journals Towards a New Algorithm to Optimize IPv6 Neighbor Discovery Security for Small Objects Networks

2018 ◽  
Vol 2018 ◽  
pp. 1-11 ◽  
Author(s):  
Ali El Ksimi ◽  
Cherkaoui Leghris
Keyword(s):  
Digital Signature ◽  
Success Probability ◽  
Neighbor Discovery ◽  
Small Object ◽  
Detection Process ◽  
Private Key ◽  
Duplicate Address Detection ◽  
Address Configuration

In order to verify the uniqueness of link-local or unicast addresses, nodes must perform a Duplicate Address Detection process before using them. However, this process is subject to many attacks and the security is willing to be the most important issues in Small Object Networks with IPv6. In this paper, we developed a new algorithm to optimize the security in IPv6-DAD process; this method is based on SHA-512 to verify the identity of the Neighbor Discovery messages transmitted in the link local. First, before sending the NS message, the new node uses the function SHA-512 to hash to the target address and use the last 64 bits in a new field and then encrypt the result with its private key. When receiving the secure message, the existing nodes decrypt it. Our algorithm is going to secure the DAD process by using a digital signature. Overall, this algorithm showed a significant effect in terms of the Address Configuration Success Probability (ACSP).

New Algorithm to Reduce File Size and Bandwidth of Hashed Digital Signature for Image Steganography Using LSB

2014 ◽  
Vol 980 ◽  
pp. 194-197
Author(s):  
Erfaneh Noroozi ◽  
Salwani Bt Mohd Daud ◽  
Ali Sabouhi ◽  
Mohammad Reza Salehnamadi
Keyword(s):  
Digital Signature ◽  
Image Steganography ◽  
Sensitive Information ◽  
Multi Agent Systems ◽  
File Size ◽  
Agent Systems ◽  
Private Key ◽  
Simple Implementation ◽  
Multi Agent ◽  
Original File

In computer cryptography, digital signature is one of the best cryptography systems. Public-private keys are used to pass sensitive information however it can also be used to provide authentication on the particulars of a sender. Proposed algorithm is a new design and simple implementation mechanism for producing a digital signature. Some applications such as multi agent systems transferred data with small size and capacity. The new scheme minimizes the size of original file and gives us a dynamic and smaller hashed message output. In this algorithm load the original files then hashed the message and encode it with the private key of sender. Finally modify the established code into a unique digital signature at Base 16. We concentrate on designing and implementation of functions of algorithm.

scholarly journals Proposed an Algorithm for Preventing IP Spoofing DoS Attack on Neighbor Discovery Protocol of IPv6 in Link Local Network

2019 ◽  
Vol 4 (12) ◽  
pp. 65-70
Author(s):  
Md. Mustafejur Rahman ◽  
Md. Mustafizur Rahman ◽  
Saif Ibne Reza ◽  
Sumonto Sarker ◽  
Md. Mehedi Islam
Keyword(s):  
Local Network ◽  
Neighbor Discovery ◽  
Malicious Node ◽  
Dos Attack ◽  
Malicious Nodes ◽  
Ip Address ◽  
Duplicate Address Detection ◽  
Ip Spoofing ◽  
Neighbor Discovery Protocol

Duplicate Address Detection (DAD) is one of the most interesting features in IPv6. It allows nodes to connect to a network by generating a unique IP address. It works on two Neighbor Discovery (ND) messages, namely, Neighbor Solicitation (NS) and Neighbor Advertisement (NA). To verify the uniqueness of generating IP, it sends that IP address via NS message to existing hosts. Any malicious node can receive NS message and can send a spoof reply, thereby initiates a DoS attack and prevents auto configuration process. In this manner, DAD is vulnerable to such DoS attack. This study aims to prevent those malicious nodes from sending spoof reply by securing both NS and NA messages. The proposed Advanced Bits Security (ABS) technique is based on Blake2 algorithm and introducing a creative option called ABS field that holds the hash value of tentative IP address and attached to both NA and NS message. We expect the ABS technique can prevent spoof reply during DAD procedure in link local network and can prevent DoS attack

Email Security and PGP Technical Analysis

2012 ◽  
Vol 546-547 ◽  
pp. 1075-1079
Author(s):  
Chun Ying Gu ◽  
Rui Ying Fang
Keyword(s):  
Digital Signature ◽  
Technical Analysis ◽  
Generation Process ◽  
Transmission Method ◽  
Private Key ◽  
Encryption And Decryption ◽  
Secure Email ◽  
Pair Generation

Currently, Email is one of the most popular applications in people’s life. A secure email requires that the email system can provide encryption and digital signature, PGP is a popular email encryption and transmission method, the paper gives a brief overview of email security, details the PGP algorithm, function, encryption and decryption process and public/private key pair generation process, and analysis’s Security of PGP.

Secure and efficient quantum designated verifier signature scheme

2020 ◽  
Vol 35 (18) ◽  
pp. 2050148
Author(s):  
Yue Zhang ◽  
Xiangjun Xin ◽  
Fagen Li
Keyword(s):  
Quantum State ◽  
Digital Signature ◽  
Quantum Signature ◽  
Economic Interest ◽  
Signature Scheme ◽  
Forgery Attack ◽  
Private Key ◽  
Designated Verifier ◽  
Designated Verifier Signature ◽  
One Way Function

A digital signature with designated verifier (SWDV) makes that only the designated verifier can verify its validity. It can be used to protect the privacy and economic interest of the signer. So, the SWDV schemes have many applications in e-voting, auction and some other fields. To make the SWDV secure against the quantum forger, a quantum signature with designated verifier signature (QSWDV) scheme is proposed. Our QSWDV is robust due to its strong security against forgery attack, inter-resending attacks, impersonation attacks and Trojan horse attacks. Its properties such as non-transferability and hiding source can be guaranteed by the signature simulation of the designated verifier. What is more, our scheme can be proved to be information-theoretically secure, which can guarantee the secrecy of the signer’s private key and the unforgeability of the QSWDV. In the proposed QSWDV scheme, the partners neither need use quantum one-way function nor need perform quantum state comparisons, which can reduce the complexity and improve the efficiency the QSWDV scheme.

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