I'm writing a program for Amazon's Mechanical Turk, and i'm having a
lot of trouble with HMAC SHA-1.  Let me explain.

The string i'm encoding is
"AWSMechanicalTurkRequesterCreateHIT2005-12-20T03:14:04.000Z"

with "HR/yxxPq6ntBy4j0/aqcVRrVsd3WNSi3ldj7+C2W" as my secret key
I get "f8854f5ffb05895ab6d1bafc35f7213c2349aa87"

and to base64, I get "Zjg4NTRmNWZmYjA1ODk1YWI2ZDFiYWZjMzVmNzIxM2MyMzQ5YWE4Nw=="

Which is way longer than the sig should be (according to your scratchpad)
(scratchpad found here http://awszone.techies.net/index.aws)

If you use my key 179R1739QQHMJV5KG202 and the secret key I gave you
up there, you could use those at the autosign requests thing and save
em', go to create hit, and click "show me" it'll show what the sig
SHOULD be.  Could you figure out what i'm doing wrong?  Thanks a lot.

How do you cope with the test vectors of RFC2104 ?


  key =         0x0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b0b
  key_len =     16 bytes
  data =        "Hi There"
  data_len =    8  bytes
  digest =      0x9294727a3638bb1c13f48ef8158bfc9d

  key =         "Jefe"
  data =        "what do ya want for nothing?"
  data_len =    28 bytes
  digest =      0x750c783e6ab0b503eaa86e310a5db738

  key =         0xAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
  key_len       16 bytes
  data =        0xDDDDDDDDDDDDDDDDDDDD...
                ..DDDDDDDDDDDDDDDDDDDD...
                ..DDDDDDDDDDDDDDDDDDDD...
                ..DDDDDDDDDDDDDDDDDDDD...
                ..DDDDDDDDDDDDDDDDDDDD
  data_len =    50 bytes
  digest =      0x56be34521d144c88dbb8c733f0e8b3f6

Those are MD5 test vectors I should point out - but once you've got that
working switching hash functions is simple.

yeah, my SHA-1 tests come out ok, I THINK my problem is with my base64 encoding.