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Key derivation function: key-hash based computational extractor and stream based pseudorandom expander.

Chai Wen Chuah1, Nur Ziadah Harun2, Isredza Rahmi A Hamid2

  • 1Guangdong University of Science & Technology, Dongguan, China.

Peerj. Computer Science
|September 24, 2024
PubMed
Summary
This summary is machine-generated.

This research introduces a novel key derivation function using keyed-hash message authentication codes and stream ciphers. This new design enhances security and execution efficiency for protecting electronic data online.

Keywords:
Block ciphersKey derivation functionKeyed-hash message authentication code based computational extractorKeyed-hash message authentication codesStream cipher based pseudorandom expanderStream ciphers

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Area of Science:

  • Cryptography
  • Computer Security
  • Information Theory

Background:

  • Key derivation functions (KDFs) are crucial cryptographic algorithms for generating secure keys from sensitive input strings.
  • Existing KDFs often rely on single cryptographic ciphers, potentially creating vulnerabilities.
  • The security and efficiency of KDFs are paramount for robust internet data protection and secure cryptosystems.

Purpose of the Study:

  • To propose and evaluate a novel KDF design.
  • To enhance the security and efficiency of cryptographic key generation.
  • To address potential vulnerabilities in existing KDF schemes.

Main Methods:

  • The study combines two distinct cryptographic ciphers: keyed-hash message authentication codes (HMACs) for the computational extractor and stream ciphers for the pseudorandom expander.
  • The proposed KDF design integrates these components to generate cryptographic keys.
  • Performance was evaluated based on security levels and execution time compared to existing methods.

Main Results:

  • The proposed KDF, utilizing HMACs and stream ciphers, demonstrated a high level of security.
  • The design also offered significant efficiency benefits, particularly in terms of execution time.
  • Compared to existing KDF schemes, the new approach maintained superior security and performance.

Conclusions:

  • Combining HMACs and stream ciphers in a KDF offers a secure and efficient method for generating cryptographic keys.
  • This novel approach enhances the protection of electronic data during internet transmission.
  • The findings suggest a promising direction for developing more resilient security systems.