scholarly journals Remove key Escrow from the Identity-Based Encryption System

2006 ◽  
pp. 37-50 ◽  
Author(s):  
Zhaohui Cheng ◽  
Richard Comley ◽  
Luminita Vasiu
Keyword(s):  
Key Escrow ◽  
Identity Based Encryption ◽  
Identity Based

scholarly journals Improved Identity Based Encryption System (IIBES): A Mechanism for Eliminating the Key-Escrow Problem

2021 ◽  
Vol 5 (1) ◽  
pp. 77-84
Author(s):  
Maitri Patel ◽  
Rajan Patel
Keyword(s):  
Key Management ◽  
Public Key Cryptography ◽  
Public Key ◽  
Key Generation ◽  
Revolutionary Change ◽  
Key Escrow ◽  
Identity Based Encryption ◽  
Identity Based ◽  
Key Revocation ◽  
Identity Based Cryptography

A revolutionary change to public-key cryptography can be considered as an Identity Based Cryptography (IBC) in which identity of the receiver is being used as a public key for encrypting a message and Key Generation Centre (KGC). IBC will generate and distribute the private key to each user to decrypt a message. The thought behind presenting the scheme was to improve and reduce the complexity of certificate and key management, but it also gives rise to key escrow problem, access to encrypted information to unauthorized users. The paper represents Improved Identity-Based Encryption Scheme (IIBES) for Domain Name System (DNS) security which provides confidentiality and authentication through modified identity based encryption and identity based digital signatures. The IIBES comprises key revocation mechanism for non-revoked users and also eliminates key escrow problem. Thus, the IIBES aids to implement the identity-based cryptography more safely in reality and protects DNS against cache poisoning, spoofing attack and masquerade attack. Doi: 10.28991/esj-2021-01259 Full Text: PDF

Identity-Based Cryptography

2013 ◽  
pp. 430-450 ◽  
Author(s):  
Jenny Torres ◽  
Michele Nogueira ◽  
Guy Pujolle
Keyword(s):  
Computer Systems ◽  
Third Party ◽  
Future Trends ◽  
Key Escrow ◽  
Private Key ◽  
Identity Based Encryption ◽  
Data Authentication ◽  
Communication Device ◽  
Identity Based ◽  
Identity Based Cryptography

Since computer systems and communication become each time more pervasive, information security takes attention, requiring guarantees for data authentication, integrity and confidentiality. Pervasive communication and computer systems intend to provide access to information and services anytime and anywhere, demanding cryptographic systems more practical and that consider the characteristics of emerging network paradigms, such as wireless communication, device constraints and mobility. Identity-Based Cryptography (IBC) is an asymmetric key cryptographic technology that employs as user’s public key any unique information related to the identity of the user. IBC efficiently manages keying material and provides an easy way to issue a pair of keys applying user information. However, it assumes the existence of a Trusted Third Party (TTP), called Private Key Generator (PKG), which is responsible for generating the corresponding user private key. Relying on a TTP and using an identity as the base of the scheme result in different weaknesses on the system, as the inherent key escrow problem. This chapter investigates those weaknesses, and it points out the stat-of-the-art of proposed solutions to avoid them. This chapter also provides an overview of Identity-Based Encryption (IBE), Identity-Based Signature (IBS) and Identity-Based Key Agreement (IBKA), emphasizing IBE due to being an open problem for many years. This chapter concludes highlighting IBC applications and future trends.

scholarly journals A Multi-Authority Attribute-Based Encryption System Against Malicious KGC

2012 ◽  
Vol 6-7 ◽  
pp. 38-44
Author(s):  
Guo Yan Zhang
Keyword(s):  
Encryption Scheme ◽  
Central Authority ◽  
Key Escrow ◽  
Identity Based Encryption ◽  
Attribute Based Encryption ◽  
Identity Based

Attribute-based encryption scheme is a scheme in which each user is identified by a set of attributes, and some function of those attributes is used to determine decryption ability for each ciphertext. Similar with identity-based encryption scheme, attribute-based schemes are also confronted with key escrow problem. Furthermore, the attributes belonging to a user usually are monitored by different authorities. This paper resolves the two problems by using a general attribute-based encryption scheme and K-Sibling intractable function families. In our construction, different attributes sets of a user are still certified by different authorities, but the partial private keys corresponding to the attributes are generated by a central authority. Simultineously, different authorities jointly generate the users’ secret value which cannot be obtained by the central authority. Compared with general multi-authourity attributed-based encryption scheme, our approach has more efficiency.

Identity-Based Cryptography

2013 ◽  
pp. 162-182
Author(s):  
Jenny Torres ◽  
Michele Nogueira ◽  
Guy Pujolle
Keyword(s):  
Computer Systems ◽  
Third Party ◽  
Future Trends ◽  
Key Escrow ◽  
Private Key ◽  
Identity Based Encryption ◽  
Data Authentication ◽  
Communication Device ◽  
Identity Based ◽  
Identity Based Cryptography

Since computer systems and communication become each time more pervasive, information security takes attention, requiring guarantees for data authentication, integrity and confidentiality. Pervasive communication and computer systems intend to provide access to information and services anytime and anywhere, demanding cryptographic systems more practical and that consider the characteristics of emerging network paradigms, such as wireless communication, device constraints and mobility. Identity-Based Cryptography (IBC) is an asymmetric key cryptographic technology that employs as user’s public key any unique information related to the identity of the user. IBC efficiently manages keying material and provides an easy way to issue a pair of keys applying user information. However, it assumes the existence of a Trusted Third Party (TTP), called Private Key Generator (PKG), which is responsible for generating the corresponding user private key. Relying on a TTP and using an identity as the base of the scheme result in different weaknesses on the system, as the inherent key escrow problem. This chapter investigates those weaknesses, and it points out the stat-of-the-art of proposed solutions to avoid them. This chapter also provides an overview of Identity-Based Encryption (IBE), Identity-Based Signature (IBS) and Identity-Based Key Agreement (IBKA), emphasizing IBE due to being an open problem for many years. This chapter concludes highlighting IBC applications and future trends.

Anonymous Hierarchical Identity-Based Encryption with Short Ciphertexts

2011 ◽  
Vol E94-A (1) ◽  
pp. 45-56 ◽  
Author(s):  
Jae Hong SEO ◽  
Tetsutaro KOBAYASHI ◽  
Miyako OHKUBO ◽  
Koutarou SUZUKI
Keyword(s):  
Identity Based Encryption ◽  
Identity Based
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