00380nam a2200133Ia 4500008004000000020001800040082001500058100002000073245005200093250000500145260005300150300001000203650003300213210210b1994   xxu||||| |||| 00| 0 eng d  a3 540 78071 8  a512.7 KOBC  aKOBLITZ (Neal).  aCourse in number theory and cryptography. Ed 2.  a  aNew York.bSpringer-Verlag New York, Inc.,c1994  ax,238  aNumber Theory Cryptography