00632cam|a2200169 a 450000500170000000800410001703500150005805000190007324501950009226000370028730000100032444000490033465000290038365000170041270000140042970000190044320260818175107.0020627s1992    gw      r     001|0 eng d  a.b11858564 4aQA76.9 A25bP800aPublic-key cryptography :bstate of the art and future directions : E. I. S. S. Workshop, Oberwolfach, Germany, July 3-6, 1991 : final report /cTh. Beth, M. Frisch and G. J. Simmons, (eds.)  aBerlin :bSpringer-Verlag,c1992  a97 p. 0aLecture notes in computer science ;vno. 578 0aComputerxAccess control 0aCryptography1 aBeth, Th.1 aSimmons, G. J.