Changing of the Guards: Certificate and Public Key Management on the Internet

Bruhner, Carl Magnus; Linnarsson, Oscar; Nemec, Matus; Arlitt, Martin; Carlsson, Niklas

doi:10.1007/978-3-030-98785-5_3

Cited by 4 publications

(1 citation statement)

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“…Cryptographic key management networks may include both long-lived and short-lived keys, depending on the systems for which they are created [3]. The complexity of cryptographic keys varies based on factors such as the length, source, or probability of the key being guessed, along with its resistance to unauthorized access [4]. The traditional methods by which the key is generated, such as those based on computers or natural phenomena, may be common and uncomplicated, but they are not robust enough to meet security challenges.…”

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confidence: 99%

Cryptographic Key Exchange Using Blockchain Technology

Muhsin Naeem,

H. Alibraheem

2024

JEPS

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Abstract:Cryptographic key management systems (KMS) are an important component of secure communications systems and organisations must protect sensitive information by maintaining confidentiality, integrity, and reliability. In this paper, we create an efficient cryptographic key management application that uses blockchain technology (BC) and fingerprint biometrics to meet this demand. A private network of ten authorised users is created according to the Fingerprint Verification Competition 2000 (FVC2000)database. They create and exchange encrypted keys according to security standards that include confidentiality, authenticity, trust, and limited access to the system. The system requires each authorized user to log in using their email and password, in addition to their fingerprint. The fingerprint is converted to binary if it is grayscale. If the fingerprint already exists in binary format, the system will extract the fingerprint features in matrix form by processing any missing or incorrect information with an emphasis on accurate representation. A 256-bit encrypted key is produced from this matrix after feature retrieval, by converting the feature matrix into a long string which is then fed through the secure hash algorithm 256 (SHA256) function. The app uses blockchain technology to encrypt the key, apply additional encryption, and associate it with a unique hash. The encrypted key is contained within a block. Users then securely exchange this encrypted block. The application strictly accepts authorised users and rejects unauthorised users. The encryption KMS application provides a high level of security and reliability for organizations looking to protect their encryption keys by combining the use of fingerprint biometrics and BC technology.

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confidence: 99%