<record>
  <controlfield tag="001">54</controlfield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">cryptography, probabilistic encryption, Identity-Based Public-Key Cryptography</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Fair Coin Flipping</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Key Escrow</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">Zero Knowledge Interactive Proof Systems</subfield>
  </datafield>
  <datafield tag="653" ind1="1" ind2=" ">
    <subfield code="a">General Computer Security</subfield>
  </datafield>
</record>