Expressive Key-Policy Attribute-Based Encryption with Constant-Size Ciphertexts

  title={Expressive Key-Policy Attribute-Based Encryption with Constant-Size Ciphertexts},
  author={Nuttapong Attrapadung and B. Libert and E. D. Panafieu},
  booktitle={Public Key Cryptography},
  • Nuttapong Attrapadung, B. Libert, E. D. Panafieu
  • Published in Public Key Cryptography 2011
  • Computer Science
  • Attribute-based encryption (ABE), as introduced by Sahai and Waters, allows for fine-grained access control on encrypted data. In its key-policy flavor, the primitive enables senders to encrypt messages under a set of attributes and private keys are associated with access structures that specify which ciphertexts the key holder will be allowed to decrypt. In most ABE systems, the ciphertext size grows linearly with the number of ciphertext attributes and the only known exceptions only support… CONTINUE READING
    Computationally Efficient Ciphertext-Policy Attribute-Based Encryption with Constant-Size Ciphertexts
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