Shareaza

I'm trying to create an application that must be compatible with shareaza's SHA1 hashing - but it seems like I can't find out how shareaza makes the hash-codes

An examle:

In my library I put a acsii-file called "foobar.txt". It contains the text "foobar" and has the size of 6 bytes / octets. ShareAza hashes the file to:

RBB5P6JECYQR32PLXFR76THCQESZGKDY

When I perform a SHA1-hash of the file content ("foobar") and encode the SHA1-digest into base32 (RFC-4648 compliant) I get:

77LU7CA5EELCIY5Z57UY7YSM754C7EZF

What am I doing wrong?

Use HashLib library (and HashTest as example), its part of Shareaza SVN source tree.

does the file contain metadata or id3 tags? shareaza sometimes strips this information before hashing

sorry, I should have ready the first post better.

Problem solved. It was a matter of reversing the bytes in the dwords of the SHA1-digest. Normally they would be aligned as (byte-numbers, most significant to least significant):

4321 4321 4321 4321 4321

They had to be reversed to (byte-numbers, least significant to most significant):

1234 1234 1234 1234 1234

In order to produce the right result