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This proposed idea promotes a unique data security solution for authenticating digital documents by endorsing same copyright signature from each of its concealed molded versions. Here client holds actual signature and one cryptic version of the actual signature as shared authentic data. Additionally, server also maintains that same actual signature and its exclusive private share generated from that same original signature. Protocol initiated by client with secret embedding of multiple copies of that actual signature fragments and cryptic signature share within the e-document image in non-overlapping portions. Critically these signature versions are session wise dynamically casted through hash values derived from client–server shared secret key and session random challenge. Server then ratifies that e-document by sensing two exactly same original signatures from each of those shielded signature versions by utilizing own private share and those same hash operations. Enhancements on data hiding also addressed here with cover image region wise variable hiding of secret data and combination of spatial and transformed encoding. Finally, this scheme experimentally confirms superiority over existing works on data hiding aspects and major data security issues.

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Dual Layer Validation of Digital Documents with Dynamical Concealment of Signature Fragment Combinations and Authentic Signature Share (DVDDSCAS)

  • 会议论文

  • 发表日期：

    2026年

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  • Sayantan Chakrabarti,
  • Sudipta Roy,
  • Soumit Chowdhury,
  • Anirban Goswami,
  • Paramita Dey,
  • Kinsuk Chatterjee,
  • Nabin Ghoshal

摘要

This proposed idea promotes a unique data security solution for authenticating digital documents by endorsing same copyright signature from each of its concealed molded versions. Here client holds actual signature and one cryptic version of the actual signature as shared authentic data. Additionally, server also maintains that same actual signature and its exclusive private share generated from that same original signature. Protocol initiated by client with secret embedding of multiple copies of that actual signature fragments and cryptic signature share within the e-document image in non-overlapping portions. Critically these signature versions are session wise dynamically casted through hash values derived from client–server shared secret key and session random challenge. Server then ratifies that e-document by sensing two exactly same original signatures from each of those shielded signature versions by utilizing own private share and those same hash operations. Enhancements on data hiding also addressed here with cover image region wise variable hiding of secret data and combination of spatial and transformed encoding. Finally, this scheme experimentally confirms superiority over existing works on data hiding aspects and major data security issues.