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  4.         PRIM┼á i≤ thσ primσ numbe≥ teste≥ illustrateΣ iε thσ Jaε 8│ issuσ ì
  5.         oµ BYTE«  ╔ diΣ u≡ encrypt¼ decryp⌠ anΣ thσ ke∙ generato≥ a≤ wel∞ ì
  6.         bu⌠ aφ no⌠ submittinτ theφ a≤ decryp⌠ wil∞ no⌠ worδ properl∙á anΣ ì
  7.         thσá systeφá i≤ no⌠ practica∞ duσ t∩ speeΣá limitations«á  Anyonσ ì
  8.         reall∙á wantinτ m∙ worδ caε writσ mσ directly..«á  Followinτá arσ ì
  9.         somσ lesson≤ learned.
  10.  
  11.         ╔á useΣá thσá informatioε iε thσ Bytσ articlσá t∩á ge⌠á ßá systeφ ì
  12.         runninτ tha⌠ encrypted/decrypteΣ wholσ file≤ insteaΣ oµ line≤ anΣ ì
  13.         blocks«á  ╔ raε thi≤ u≡ iε Microsof⌠ BASI├ oε thσ machinσ a⌠ worδ ì
  14.         whicΦá ha≤á aε 8086«á  Duσ t∩ speeΣ problems¼á eveε oε tha⌠á 8mh· ì
  15.         machine¼á ╔ lookeΣ fo≥ severa∞ alternatives¼ particularl∙ fo≥ thσ ì
  16.         decryptioε algorithm«  Oµ thσ language≤ available¼ onl∙ BASI├ haΣ ì
  17.         extendeΣ precisioε arithmetic..«á  ╔ exploreΣ thσ possibilit∙á oµ ì
  18.         usinτá thσ FIXE─ routine≤ supplieΣ b∙ Ithaca¼á bu⌠ founΣá severa∞ ì
  19.         unexplaineΣá bugs«á  Als∩ go⌠ onσ fi° froφ Ithaca¼á bu⌠ i⌠ didn'⌠ ì
  20.         hel≡á ß lot«á  Theε ╔ discovereΣ thσ UNIT▒ stufµ iεá thσá librar∙ ì
  21.         disc«á  Thσá 808╢ machinσ ha≤ ß Pasca∞ compile≥ oε it¼á bu⌠ i⌠ i≤ ì
  22.         wierΣ -- filσ I/╧ i≤ eveε worsσ thaε Zíá  Bu⌠ thσ UNIT▒ stufµá i≤ ì
  23.         fairly standard Pascal and should be portable...
  24.  
  25.         UNIT▒á i≤ nicel∙ implementeΣ anΣ commented«á  ╔ founΣ ver∙ littlσ ì
  26.         troublσ makinτ thσ routine≤ work«á  The∙ i≤ al∞ se⌠ u≡ fo≥ usσ a≤ ì
  27.         externall∙á compileΣ files«á Thσ strateg∙ oµ stabilizinτ thσ maiε ì
  28.         prograφ earl∙ anΣ puttinτ al∞ thσ worδ iε aε externa∞ filσ reall∙ ì
  29.         pay≤ off«  UNIT▒ i≤ ß BI╟ se⌠ oµ procedure≤ anΣ yo⌡ don'⌠ wan⌠ t∩ ì
  30.         recompilσá anΣ reassemblσ i⌠ an∙ morσ thaεá necessary(watcΦá you≥ ì
  31.         disπ space).
  32.  
  33.         The assets to UNIT1 are:
  34.              - al∞ se⌠ u≡ t∩ implement«á  Eveε ß dumm∙ likσ mσ caε figurσ ì
  35.         it out and get things to run.
  36.              - intege≥ arithmetic¼ completσ witΦ DI╓ anΣ MO─ function≤ i≤ ì
  37.         implemented.  
  38.  
  39.         Thσá chieµ drawbacδ≤áare: ì
  40.              - routine≤ lacδ thσ abilit∙ t∩ translatσ bacδ t∩ string≤á o≥ ì
  41.         reals
  42.              - the∙á reall∙ slo≈ thing≤ down«á  Interprete≥ BASI├á doublσ ì
  43.         precision is much faster.
  44.              - yo⌡ ge⌠ fifteen¼á no⌠ 1╢ digits¼á oµ precision«á  Thi≤ raε ì
  45.         the decrypt program aground.
  46.              - fo≥ somσ unexplaineΣ reason¼ thσ getlonτ procedurσ mus⌠ bσ ì
  47.         followed by 2 carriage returns...
  48.  
  49.         I carried things this far for some other reasons:
  50.              - I wanted to wring out the UNIT1 features.
  51.              - Maybσ somσ oµ yo⌡ caε ge⌠ somσ valuσ froφ m∙ work«á  UNIT▒ ì
  52.         is not very noticable in the library, but pretty nifty.
  53.  
  54.         Bσá prepareΣá t∩ watcΦ ß ver∙ dumΓ prograφ fo≥ ß ver∙ lonτá timeí  ì
  55.         Fo≥ thσ BASI├ versioε a⌠ work¼ ╔ modifieΣ thσ prograφ t∩ loτ gooΣ ì
  56.         primσ number≤ t∩ ß disc¼á closσ thσ filσ anΣ kee≡ running«á  Tha⌠ ì
  57.         wa∙á yo⌡ star⌠ thσ prograφ anΣ g∩ home«á  I⌠ take≤ ß ^π t∩á breaδ ì
  58.         thσ program(makσ surσ thσ filσ i≤ closeΣ s∩ yo⌡ don'⌠ losσ it).
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