February 2019
Intermediate to advanced
256 pages
7h 34m
English
Content preview from Practical Security Automation and Testing
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Step 1 – calculating the entropy
This step of entropy calculation is optional. However, an entropy value will help to improve the accuracy of the search result. For example, say we know of one other API key in the source code. Knowing the entropy value of that known API key will help to identify another unknown key with higher accuracy. In this case, we're assuming the known API key is ZeXvRCRZ3LF:
$ python entropy.py ZeXvRCRZ3LF
The output of the entropy calculation will be done by DumpsterDiver. The entropy value of the known API key string is 3.095795255 bits. Once we have the exact entropy value of the known API key, we can search for the same entropy value of other API Keys.
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