Table of Contents for
Network Security with OpenSSL

Version ebook / Retour

Cover image for bash Cookbook, 2nd Edition Network Security with OpenSSL by Pravir Chandra Published by O'Reilly Media, Inc., 2002
  1. Cover
  2. Network Security with OpenSSL
  3. Network Security with OpenSSL
  4. Dedication
  5. A Note Regarding Supplemental Files
  6. Preface
  7. 1. Introduction
  8. 2. Command-Line Interface
  9. 3. Public Key Infrastructure (PKI)
  10. 4. Support Infrastructure
  11. 5. SSL/TLS Programming
  12. 6. Symmetric Cryptography
  13. 7. Hashes and MACs
  14. 8. Public Key Algorithms
  15. 9. OpenSSL in Other Languages
  16. 10. Advanced Programming Topics
  17. A. Command-Line Reference
  18. asn1parse
  19. ca
  20. ciphers
  21. crl
  22. crl2pkcs7
  23. dgst
  24. dhparam
  25. dsa
  26. dsaparam
  27. enc
  28. errstr
  29. gendsa
  30. genrsa
  31. nseq
  32. passwd
  33. pkcs7
  34. pkcs8
  35. pkcs12
  36. rand
  37. req
  38. rsa
  39. rsautl
  40. s_client
  41. s_server
  42. s_time
  43. sess_id
  44. smime
  45. speed
  46. spkac
  47. verify
  48. version
  49. x509
  50. Index
  51. About the Authors
  52. Colophon
  53. Copyright

Name

passwd

Synopsis

The passwd command is used to compute common password hashes that are typically used for system passwords on various Unix systems.

Options

-1

Use BSD’s MD5-based algorithm.

-apr1

Use an Apache variant of the apr1 algorithm.

-quiet

Suppress warning messages when passwords are truncated.

-salt salt

Specify the salt to use.

-in filename

Specify the name of a file from which plaintext passwords should be read. Each line contains one password, and a hash will be computed for each.

-stdin

Cause passwords to be read from stdin without prompting or suppressing echo.

-table

Cause both the plaintext password and the generated hash to be output in tabular form.

Notes

By default, the standard Unix crypt hash will be used, which limits the length of plaintext passwords to eight characters. The other two supported hash algorithms have no limit on password length.