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blowfish 1.2 KB

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  1. .TH BLOWFISH 2
  2. .SH NAME
  3. setupBFstate, bfCBCencrypt, bfCBCdecrypt, bfECBencrypt, bfECBdecrypt - blowfish encryption
  4. .SH SYNOPSIS
  5. .B #include <u.h>
  6. .br
  7. .B #include <libc.h>
  8. .br
  9. .B #include <mp.h>
  10. .br
  11. .B #include <libsec.h>
  12. .PP
  13. .B
  14. void setupBFstate(BFstate *s, uchar key[], int keybytes,
  15. .B
  16. uchar *ivec)
  17. .PP
  18. .B
  19. void bfCBCencrypt(uchar *data, int len, BFstate *s)
  20. .PP
  21. .B
  22. void bfCBCdecrypt(uchar *data, int len, BFstate *s)
  23. .PP
  24. .B
  25. void bfECBencrypt(uchar *data, int len, BFstate *s)
  26. .PP
  27. .B
  28. void bfECBdecrypt(uchar *data, int len, BFstate *s)
  29. .SH DESCRIPTION
  30. .PP
  31. Blowfish is Bruce Schneier's symmetric block cipher. It supports
  32. variable length keys from 32 to 448 bits and has a block size of 64
  33. bits. Both CBC and ECB modes are supported.
  34. .PP
  35. setupBFstate takes a BFstate structure, a key of at most 56 bytes, the
  36. length of the key in bytes, and an initialization vector of 8 bytes
  37. (set to all zeroes if argument is nil). The encryption and decryption
  38. functions take a BFstate structure, a data buffer, and a length, which
  39. must be a multiple of eight bytes as padding is currently unsupported.
  40. .SH SOURCE
  41. .B /sys/src/libsec
  42. .SH SEE ALSO
  43. .IR mp (2),
  44. .IR aes (2),
  45. .IR des (2),
  46. .IR dsa (2),
  47. .IR elgamal (2),
  48. .IR rc4 (2),
  49. .IR rsa (2),
  50. .IR sechash (2),
  51. .IR prime (2),
  52. .IR rand (2)