000 00244 a2200097 4500
001 12803
090 _c9780
_d9780
100 _aCoutinho,S.C
245 _aMathematics of Ciphers:Number theory and RSA Cryptography
260 _bUniversity press India
_c2003
942 _aNUST-CAE
999 _c247876
_d247876