Identity Based Cryptosystem: A New Paradigm in Public Key Infrastructure

2012 ◽  
pp. 336-341
Author(s):  
S. Kuzhalvaimozhi ◽  
G. Raghavendra Rao
Keyword(s):  
Public Key Infrastructure ◽  
Public Key ◽  
New Paradigm ◽  
Identity Based

Research on the Application of IBE in IEC61850 Substation Automation System

2011 ◽  
Vol 130-134 ◽  
pp. 2805-2808
Author(s):  
Shao Ping Yin
Keyword(s):  
Public Key Infrastructure ◽  
Public Key ◽  
Communication Security ◽  
Automation System ◽  
Paper Briefly ◽  
Iec 61850 ◽  
Smart Grid Communications ◽  
Identity Based ◽  
Substation Automation ◽  
Reasonable Choice

In order to reap the benefits promised by the Smart Grid, communications between the IEDs in IEC 61850 Substation Automation System (SAS) will need to be made much more secure.Traditional security solutions based on Public Key Infrastructure (PKI) are calculation intensive and introduces latency that will be difficult to meet substation environmental and electrical requirements, so they are not well suited for IEC 61850 SAS. Identity based encryption (IBE) schemes, introduced by Shamir in 1984 [5] are based on the idea to use participant’s unique identities as public key and public key directories are unnecessary. Thus, utilizing IBE in IEC 61850 SAS is a reasonable choice. This paper briefly introduces the features of IEC 61850 SAS communication security and IBE and then propose an IBE-based Self Private Key Generated (SPKG) encryption scheme to establish encryption system in IEC 61850 SAS. Advantages of this SPKG Scheme are also discussed in the paper.

scholarly journals An Implementation Suite for a Hybrid Public Key Infrastructure

Symmetry ◽  
2021 ◽  
Vol 13 (8) ◽  
pp. 1535
Author(s):  
Jason Chia ◽  
Swee-Huay Heng ◽  
Ji-Jian Chin ◽  
Syh-Yuan Tan ◽  
Wei-Chuen Yau
Keyword(s):  
Public Key Infrastructure ◽  
Public Key ◽  
Practical Implementation ◽  
Public And Private ◽  
Industry Standard ◽  
Cryptographic Keys ◽  
Identity Based ◽  
Identity Based Cryptography ◽  
The Cost ◽  
Enterprise Java Bean

Public key infrastructure (PKI) plays a fundamental role in securing the infrastructure of the Internet through the certification of public keys used in asymmetric encryption. It is an industry standard used by both public and private entities that costs a lot of resources to maintain and secure. On the other hand, identity-based cryptography removes the need for certificates, which in turn lowers the cost. In this work, we present a practical implementation of a hybrid PKI that can issue new identity-based cryptographic keys for authentication purposes while bootstrapping trust with existing certificate authorities. We provide a set of utilities to generate and use such keys within the context of an identity-based environment as well as an external environment (i.e., without root trust to the private key generator). Key revocation is solved through our custom naming design which currently supports a few scenarios (e.g., expire by date, expire by year and valid for year). Our implementation offers a high degree of interoperability by incorporating X.509 standards into identity-based cryptography (IBC) compared to existing works on hybrid PKI–IBC systems. The utilities provided are minimalist and can be integrated with existing tools such as the Enterprise Java Bean Certified Authority (EJBCA).

scholarly journals Identity Based Encryption and Identity Based Signature Scheme: A Research on Security Schemes

2019 ◽  
Vol 8 (6S4) ◽  
pp. 1330-1337
Keyword(s):  
Key Management ◽  
Public Key Cryptography ◽  
Public Key Infrastructure ◽  
Public Key ◽  
Signature Scheme ◽  
Certificate Authority ◽  
Identity Based Encryption ◽  
Computer Based ◽  
Identity Based ◽  
To Receive

In computer based system, key for the problem of identification, authentication and secrecy can be found in the field of cryptography. Dependence on public key infrastructure and to receive certificates signed by Certificate Authority (CA) to authenticate oneself for exchange of encrypted messages is one of the most significant limitation for the widespread adoption of Public Key Cryptography (PKC) as this process is time engrossing and error prone. Identity based cryptography (IBC) aspires to reduce the certificate and key management overhead of PKC. IBC’s important primordial is Identity-based Encryption (IBE). IBE provided emergent for perception of Identity based signature (IBS) schemes. In this paper, overview of IBE and IBS schemes has been given. Also, a survey on various IBE and IBS schemes has been performed to review different problems related to them. Finally, feasibility and applicability of IBC in current and future environments has been discussed.

scholarly journals A Certificate-Based Provable Data Possession Scheme in the Standard Model

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Caixue Zhou
Keyword(s):  
Standard Model ◽  
High Efficiency ◽  
Public Key Infrastructure ◽  
Public Key ◽  
Provable Data Possession ◽  
The Public ◽  
The Standard Model ◽  
Identity Based ◽  
The Cost ◽  
Very High

Certificate-based cryptosystem can not only resolve the private key escrow problem inherent in the identity-based cryptosystem but also reduce the cost of public key certificate management in the public key infrastructure-(PKI-) based cryptosystem. Provable data possession (PDP) can ensure the integrity of users’ data stored in the cloud at a very high probability. By combining these two concepts, we propose a certificate-based PDP scheme. We prove that our scheme is secure in the standard model assuming that the Squ-CDH problem is hard. Based on the index logic table, our scheme can be extended to support dynamic operations easily. Efficiency analysis shows that our scheme has high efficiency.

scholarly journals Revocable IBE combined with CRA to overcome the inadaptability problem

2019 ◽  
Vol 9 (1S) ◽  
pp. 71-77
Keyword(s):  
Public Key Infrastructure ◽  
Public Key ◽  
The Public ◽  
Identity Based Encryption ◽  
Cryptographic System ◽  
Identity Based ◽  
Key Update

Identity based encryption (IBE) is an open key cryptographic system and takes out the requesting of the Public key infrastructure(PKI) and confirmation relationship by and large key settings. Due to the nonappearance in PKI, the cancelation problem has become a primary issue in the IBE settings. Two or three cancellable IBE plans have been already proposed concerning this point. As of late, by embeddings an outsourcing figuring framework into the IBE, Li et al. presented a cancellable IBE scheme with the feature of key-update cloud authority association (KU-CSP). Regardless, their arrangement faces two disadvantages. One demerit is that the costs of figuring, correspondence are more than past cancellable IBE designs. Alternate limitation is nonattendance of adaptability as in KU-CSP should maintain secret regard for individual customer. Here another cancellable IBE plot with cloud cancellation authority (CRA) to understand the two disadvantages in which the execution is by and large upgraded and the CRA has only a system puzzle for each one of their customers.

scholarly journals Identity Based Encryption and Identity Based Signature Scheme on Security Schemes

2019 ◽  
Vol 8 (11) ◽  
pp. 3487-3493
Keyword(s):  
Key Management ◽  
Public Key Cryptography ◽  
Public Key Infrastructure ◽  
Public Key ◽  
Signature Scheme ◽  
Certificate Authority ◽  
Identity Based Encryption ◽  
Computer Based ◽  
Identity Based ◽  
To Receive

In computer based system, key for the problem of identification, authentication and secrecy can be found in the field of cryptography. Dependence on public key infrastructure and to receive certificates signed by Certificate Authority (CA) to authenticate oneself for exchange of encrypted messages is one of the most significant limitation for the widespread adoption of Public Key Cryptography (PKC) as this process is time engrossing and error prone. Identity based cryptography (IBC) aspires to reduce the certificate and key management overhead of PKC. IBC’s important primordial is Identity-based Encryption (IBE). IBE provided emergent for perception of Identity based signature (IBS) schemes. In this paper, overview of IBE and IBS schemes has been given. Also, a survey on various IBE and IBS schemes has been performed to review different problems related to them. Finally, feasibility and applicability of IBC in current and future environments has been discussed

An Efficient Identity Based Encryption in Cloud Computing with Outsourced Revocation

2020 ◽  
pp. 72-82
Author(s):  
U. Vijay Sankar ◽  
M. Pavithra ◽  
R Suganya
Keyword(s):  
Cloud Computing ◽  
Cloud Service ◽  
Public Key Infrastructure ◽  
Third Party ◽  
Public Key ◽  
Public Key Encryption ◽  
Private Key ◽  
Identity Based Encryption ◽  
Identity Based ◽  
Key Update

Identity-Based Encryption (IBE) which simplifies the public key and certificate management at Public Key Infrastructure (PKI) is an important alternative to public key encryption. However, one of the main efficiency drawbacks of IBE is the overhead computation at Private Key Generator (PKG) during user revocation. Efficient revocation has been well studied in traditional PKI setting, but the cumbersome management of certificates is precisely the burden that IBE strives to alleviate [2]. It aiming at tackling the critical issue of identity revocation, we introduce outsourcing computation into IBE for the first time and propose a revocable IBE scheme in the server-aided setting. Our scheme offloads most of the key generation related operations during key-issuing and key-update processes to a Key Update Cloud Service Provider, leaving only a constant number of simple operations for PKG and users to perform locally [3]. This goal is achieved by utilizing a novel collusion-resistant technique: we employ a hybrid private key for each user, in which an AND gate is involved to connect and bound the identity component and the time component [4]. Furthermore, we propose another construction which is provable secure under the recently formulized Refereed Delegation of Computation model. Finally, we provide extensive experimental results to demonstrate the efficiency of our proposed construction. In public key encryption every user must have a pair of keys, public key and private key, for encrypting and decrypting messages. An Identity-based encryption (IBE) eliminates the need for a Public Key Infrastructure (PKI). IBE uses the human intelligible identities (e.g., unique name, email address, IP address, etc) as public keys [5]. The sender using IBE encrypts message with the receivers’ identity rather than looking for receivers’ public key and corresponding certificate. Accordingly, receiver decrypts ciphertext using private key associated with the corresponding identity [6]. The private keys of users are obtained from a trusted third party called as Private Key Generator (PKG). The motivation of this paper is to study and review an efficient and secure Identity based encryption scheme with outsourced revocation for cloud computing [7].

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