Improved Efficiency for CCA-Secure Cryptosystems Built Using Identity-Based Encryption.

Dan Boneh Jonathan Katz Improved Efficiency for CCA-Secure Cryptosystems Built Using Identity-Based Encryption. 87-103 http://springerlink.metapress.com/openurl.asp?genre=article&issn=0302-9743&volume=3376&spage=87 2005 conf/ctrsa/2005 CT-RSA db/conf/ctrsa/ctrsa2005.html#BonehK05