Threshold Structure-Preserving Signatures with Randomizable Key

A Ğ Irtas A. R., Ç Elik E., Kocaman S., Sulak F., YAYLA O.

22nd International Conference on Security and Cryptography, SECRYPT 2025, Bilbao, İspanya, 11 - 13 Haziran 2025, cilt.1, ss.632-637, (Tam Metin Bildiri) identifier

  • Yayın Türü: Bildiri / Tam Metin Bildiri
  • Cilt numarası: 1
  • Doi Numarası: 10.5220/0013528900003979
  • Basıldığı Şehir: Bilbao
  • Basıldığı Ülke: İspanya
  • Sayfa Sayıları: ss.632-637
  • Anahtar Kelimeler: Privacy, Randomizable Keys, Structure-Preserving Signatures, Threshold Signatures
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Digital signatures confirm message integrity and signer identity, but linking public keys to identities can cause privacy concerns in anonymized settings. Signatures with randomizable keys can break this link, preserving verifiability without revealing the signer. While effective for privacy, complex cryptographic systems need to be modular structured for efficient implementation. Threshold structure-preserving signatures enable modular, privacy-friendly protocols. This work combines randomizable keys with threshold structure-preserving signatures to create a valid, modular, and unlinkable foundation for privacy-preserving applications.