Module sha1_gnutella

Sha1 Gnutella - Readout files and calculate the sha1-hashes. Output them base32 encoded.

Usage:

Output: <sha1-hash1> <filename1> <sha1-hash2> <filename2>

Functions

sha1_gnutella(filepath, fragment_size=10485760)
Calculate the sha1 hash and output it base32 encoded as is required by magnet links.

source code

test_speed(files, min=1048576, max=15728640, step=1048576)
Test different settings of the fragment_size.

source code

help()
Display the usage information.

source code

Variables

__depends__ = 'hashlib, base64'

FILE_FRAGMENT_SIZE_BYTES = 10485760
The length of the segments to read in one go.

filepath = 'sha1_gnutella.py'

Function Details

Calculate the sha1 hash and output it base32 encoded as is required by magnet links.

Parameters:

filepath (String) - The path to the file to hash. Must be a file! This function is too low level to add recursion into subdirectories.
fragment_size (Int) - Length of the fragment to read in bytes.

Returns:

The sha1 hash, base32 encoded (String).

Test different settings of the fragment_size.

Result: The fragment_size is almost irrelevant. Anything between 512kiB and 10MiB offers about the same speed.

Parameters:

Returns:

None

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