securenet 3.1 KB

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  1. .TH SECURENET 8
  2. .SH NAME
  3. securenet \- Digital Pathways SecureNet Key remote authentication box
  4. .SH DESCRIPTION
  5. The
  6. .I SecureNet
  7. box is used to authenticate connections to Plan 9 from a foreign system
  8. such as a
  9. Unix
  10. machine or plain terminal.
  11. The box, which looks like a calculator,
  12. performs DES encryption with a key held in its memory.
  13. Another copy of the key is kept on the authentication server.
  14. Each box is protected from unauthorized use by a four digit PIN.
  15. .PP
  16. When the system requires SecureNet authentication,
  17. it prompts with a numerical challenge.
  18. The response is compared to one
  19. generated with the key stored on the authentication server.
  20. Respond as follows:
  21. .PP
  22. Turn on the box and enter your PIN at the
  23. .B EP
  24. prompt,
  25. followed by the
  26. .B ENT
  27. button.
  28. Enter the challenge at
  29. .B Ed
  30. prompt,
  31. again followed
  32. .BR ENT .
  33. Then type to Plan 9 the response generated by the box.
  34. If you make a mistake at any time, reset the box
  35. by pressing
  36. .BR ON .
  37. The authentication server compares the response generated by the box
  38. to one computed internally. If they match, the user is accepted.
  39. .PP
  40. The box will lose its memory if given the wrong PIN
  41. five times in succession or if its batteries are removed.
  42. .PP
  43. To reprogram it, type a
  44. .B 4
  45. at the
  46. .B E0
  47. prompt.
  48. .PP
  49. At the
  50. .B E1
  51. prompt, enter your key, which consists of eight three-digit octal numbers.
  52. While you are entering these digits,
  53. the box displays a number ranging from 1 to 8 on the left side of the display.
  54. This number corresponds to the octal number you are entering,
  55. and changes when you enter the first digit of the next number.
  56. .PP
  57. When you are done entering your key, press
  58. .B ENT
  59. twice.
  60. .PP
  61. At the
  62. .B E2
  63. prompt, enter a PIN for the box.
  64. .PP
  65. After you confirm by retyping the PIN at the
  66. .B E3
  67. prompt, you can use the box as normal.
  68. .PP
  69. You can change the PIN using the following procedure.
  70. First, turn on the box and enter your current PIN at the
  71. .B EP
  72. prompt.
  73. Press
  74. .B ENT
  75. three times;
  76. this will return you to the
  77. .B EP
  78. prompt.
  79. Enter your PIN again, followed by
  80. .BR ENT ;
  81. you should see a
  82. .B Ed
  83. prompt with a
  84. .B -
  85. on the right side of the display.
  86. Enter a
  87. .B 0
  88. and press
  89. .BR ENT .
  90. You should see the
  91. .B E2
  92. prompt; follow the instructions above for entering a PIN.
  93. .PP
  94. The
  95. .I SecureNet
  96. box
  97. performs the same encryption as the
  98. .B netcrypt
  99. routine
  100. (see
  101. .IR encrypt (2)).
  102. The entered challenge, a decimal number between 0 and 100000,
  103. is treated as a text string with trailing binary zero fill to 8 bytes.
  104. These 8 bytes are encrypted with the DES algorithm.
  105. The first four bytes are printed on the display as hexadecimal numbers.
  106. However, when set up as described,
  107. the box does not print hexadecimal digits greater than 9.
  108. Instead, it prints a 2 for an A, B, or C, and a 3 for a D, E, or F.
  109. If a
  110. .B 5
  111. rather than a
  112. .B 4
  113. is entered at the
  114. .B E0
  115. print, the hexadecimal digits are printed.
  116. This is not recommended, as letters are
  117. too easily confused with digits on the
  118. .I SecureNet
  119. display.
  120. .SH "SEE ALSO"
  121. .IR encrypt (2),
  122. .IR auth (2)
  123. .br
  124. Digital Pathways, Mountain View, California
  125. .SH BUGS
  126. The box is clumsy to use and too delicate.
  127. If carried in a pocket,
  128. it can turn itself on and wear out the batteries.