https://github.com/hackndo/sha1_length_extension

Python implementation of sha1 and sha1 hash length extension for french tutorial on my blog
https://github.com/hackndo/sha1_length_extension

Last synced: 9 days ago
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Python implementation of sha1 and sha1 hash length extension for french tutorial on my blog

• Host: GitHub
• URL: https://github.com/hackndo/sha1_length_extension
• Owner: Hackndo
• License: gpl-2.0
• Created: 2015-09-10T14:59:37.000Z (over 9 years ago)
• Default Branch: master
• Last Pushed: 2015-10-26T12:34:27.000Z (about 9 years ago)
• Last Synced: 2024-11-08T04:44:44.380Z (2 months ago)
• Language: Python
• Homepage: http://blog.hackndo.com/hash-length-extension/
• Size: 176 KB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Hash length extension for SHA1

Description

===========

Python implementation of **sha1** and **sha1 hash length extension** for [french tutorial on my blog](http://blog.hackndo.com/hash-length-extension/)

How to use

==========

```python

import sha1_extender

print "=> Original sha1"

print sha1_extender.sha1(msg="MySecret!" + "name=hackndo&admin=0")

print "\n=> The magic"

result = sha1_extender.sha1_append(known_text="hackndo is amazing", append=" and smart", hash="c187bbe5056dc6602091040b694fffd27e4af1b5", secret_size=9)

print result["injection"]

print result["sha1"]

print "\n=> Check if predicted is correct"

print sha1_extender.sha1(msg="MySecret!" + "\x68\x61\x63\x6b\x6e\x64\x6f\x20\x69\x73\x20\x61\x6d\x61\x7a\x69\x6e\x67\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xd8\x20\x61\x6e\x64\x20\x73\x6d\x61\x72\x74")

```

Result

======

```

=> Original sha1

7cd80684964d9e029c1ba8717a45d54f14b15fcb

=> The magic

\x68\x61\x63\x6b\x6e\x64\x6f\x20\x69\x73\x20\x61\x6d\x61\x7a\x69\x6e\x67\x80\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\xd8\x20\x61\x6e\x64\x20\x73\x6d\x61\x72\x74

8288af4b63cd05aa7d7b9d8ea553a1d0d08e2b10

=> Check if predicted is correct

8288af4b63cd05aa7d7b9d8ea553a1d0d08e2b10

```