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Everything about Identity-based conditional proxy re-encryption

Identity-based conditional proxy re-encryption (IBCPRE) is a type of proxy re-encryption (PRE) scheme in the identity-based public key cryptographic setting. An IBCPRE scheme is a natural extension of proxy re-encryption on two aspects. The first aspect is to extend the proxy re-encryption notion to the identity-based public key cryptographic setting. The second aspect is to extend the feature set of proxy re-encryption to support conditional proxy re-encryption. By conditional proxy re-encryption, a proxy can use an IBCPRE scheme to re-encrypt a ciphertext but the ciphertext would only be well-formed for decryption if a condition applied onto the ciphertext together with the re-encryption key is satisfied. This allows fine-grained proxy re-encryption and can be useful for applications such as secure sharing over encrypted cloud data storage. Wikipedia →

🧭 Start here: a 6-step reading path

  1. Read the overview: Identity-based conditional proxy re-encryptionA 5-minute orientation
  2. Skim a recent paper: An Identity-Based Proxy Re-Encryption Scheme With Single-Hop Conditional Delegation and Multi-Hop Ciphertext Evolution for Secure Cloud Data SharingInfluential work since 2022
  3. Pick up a classic book: Information Security Practice and ExperienceThe most-reprinted book on the subject
  4. Read the landmark paper: Conditional Identity-Based Broadcast Proxy Re-Encryption and Its Application to Cloud EmailCited 140 times
  5. Go sideways: Proxy re-encryptionA closely related topic
  6. Go sideways: Hybrid cryptosystemA closely related topic

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🆕 Influential since 2022

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