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» Identity Based Threshold Proxy Signcryption Scheme
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CISC
2009
Springer
199views Cryptology» more  CISC 2009»
13 years 2 months ago
Cryptanalysis of Certificateless Signcryption Schemes and an Efficient Construction without Pairing
Abstract. Certificateless cryptography introduced by Al-Riyami and Paterson eliminates the key escrow problem inherent in identity based cryptosystems. Even though building practic...
S. Sharmila Deva Selvi, S. Sree Vivek, C. Pandu Ra...
ISW
2009
Springer
13 years 11 months ago
On the Security of Identity Based Ring Signcryption Schemes
S. Sharmila Deva Selvi, S. Sree Vivek, C. Pandu Ra...
CTRSA
2005
Springer
154views Cryptology» more  CTRSA 2005»
13 years 10 months ago
Fast and Proven Secure Blind Identity-Based Signcryption from Pairings
We present the first blind identity-based signcryption (BIBSC). We formulate its security model and define the security notions of blindness and parallel one-more unforgeability ...
Tsz Hon Yuen, Victor K. Wei
ISW
2007
Springer
13 years 11 months ago
Identity-Based Proxy Re-encryption Without Random Oracles
A proxy re-encryption scheme allows Alice to temporarily delegate the decryption rights to Bob via a proxy. Alice gives the proxy a re-encryption key so that the proxy can convert ...
Cheng-Kang Chu, Wen-Guey Tzeng
ACNS
2007
Springer
136views Cryptology» more  ACNS 2007»
13 years 11 months ago
Identity-Based Proxy Re-encryption
In a proxy re-encryption scheme a semi-trusted proxy converts a ciphertext for Alice into a ciphertext for Bob without seeing the underlying plaintext. A number of solutions have ...
Matthew Green, Giuseppe Ateniese