Geneviève Arboit Jean-Marc Robert From Fixed-Length Messages to Arbitrary-Length Messages Practical RSA Signature Padding Schemes. 44-51 2001 conf/ctrsa/2001 CT-RSA http://link.springer.de/link/service/series/0558/bibs/2020/20200044.htm db/conf/ctrsa/ctrsa2001.html#ArboitR01