| 0,0 → 1,37 |
|---|
| """ crypto.hash.sha1Hash |
| |
| Wrapper for python sha module to support crypo module standard interface |
| |
| Copyright © (c) 2002 by Paul A. Lambert |
| Read LICENSE.txt for license information. |
| """ |
| import sha |
| from crypto.hash.hash import Hash |
| |
| class SHA1(Hash): |
| |
| def __init__( self ): |
| self.name = 'SHA1' |
| self.blocksize = 1 # single octets can be hashed by padding to raw block size |
| self.raw_block_size = 64 # SHA1 operates on 512 bit / 64 byte blocks |
| self.digest_size = 20 # or 160 bits |
| self.reset() |
| |
| def reset(self): |
| self.pysha1 = sha.new() |
| |
| def update(self,data): |
| """ Update the sha object with the string arg. Repeated calls are |
| equivalent to a single call with the concatenation of all the |
| arguments: m.update(a); m.update(b) is equivalent to m.update(a+b). |
| """ |
| self.pysha1.update(data) |
| |
| def digest(self): |
| """ Return the digest of the strings passed to the update() |
| method so far. This is a 20-byte string which may contain |
| non-ASCII characters, including null bytes. |
| """ |
| return self.pysha1.digest() |
| |
| |