<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>47</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Manuel Bernardo Barbosa</style></author><author><style face="normal" font="default" size="100%">Pooya Farshim</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Secure Cryptographic Workflow in the Standard Model</style></title><secondary-title><style face="normal" font="default" size="100%"> 7th International Conference on Cryptology in India - Progress in Cryptology - INDOCRYPT</style></secondary-title><tertiary-title><style face="normal" font="default" size="100%">Lecture Notes in Computer Science</style></tertiary-title></titles><dates><year><style  face="normal" font="default" size="100%">2006</style></year><pub-dates><date><style  face="normal" font="default" size="100%">December</style></date></pub-dates></dates><urls><related-urls><url><style face="normal" font="default" size="100%">https://haslab.uminho.pt/sites/default/files/mbb/files/450.pdf</style></url></related-urls></urls><publisher><style face="normal" font="default" size="100%">Springer</style></publisher><pub-location><style face="normal" font="default" size="100%">Kolkata, India</style></pub-location><volume><style face="normal" font="default" size="100%">4329</style></volume><pages><style face="normal" font="default" size="100%">379-393</style></pages><isbn><style face="normal" font="default" size="100%">3-540-49767-6</style></isbn><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Following the work of Al-Riyami et al. we define the notion of key encapsulation mechanism supporting cryptographic workflow (WF-KEM) and prove a KEM-DEM composition theorem which extends the notion of hybrid encryption to cryptographic workflow. We then generically construct a WF-KEM from an identity-based encryption (IBE) scheme and a secret sharing scheme. Chosen ciphertext security is achieved using one-time signatures. Adding a public-key encryption scheme we are able to modify the construction to obtain escrow-freeness. We prove all our constructions secure in the standard model.&lt;/p&gt;
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