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|Type:||Artigo de periódico|
|Title:||Optimistic Blinded-key Signatures For Elgamal And Related Schemes|
|Abstract:||If autonomous mobile agents are to be used in electronic commerce environments, they must be able to sign contracts and payment orders without the need to contact their owners. As agents execute in untrusted environments, it is assumed that any information they carry can be read by a malicious host; thus, it is unwise to include secrets, such as private keys, in such agents. Sander and Tchudin proposed the concept of undetachable signatures to solve this problem, but gave no practical manifestation for it. Ferreira and Dahab's blinded-key signatures were proposed as a practical implementation of Sander and Tchudin's idea, but require the intervention of an online TTP (trusted third party). Later, they proposed an optimistic version of their blinded-key signatures based on the RSA signature scheme. Here we propose a new version of Optimistic blinded-key signatures which is based on ElGamal signatures and its variants: DSA and Schnorr. © Springer-Verlag 2004.|
|Appears in Collections:||Unicamp - Artigos e Outros Documentos|
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