How to translate from a hexdigest to a digest and vice-versa?

python hash binary-data
esac picture esac · Oct 22, 2011 · Viewed 15.4k times · Source

I want to store hashes as binary (64 bytes). But for any type of API (web service) I would want to pass them around as strings. hashlib.hexdigest() will give me a string, and hashlib.digest() will give me the binary. But if, for example, I read in the binary version from disk, how would I convert it to a string? And if I read in the string from a web service, how would I convert it to binary?

Answer

lormus picture lormus · Oct 22, 2011

You might want to look into binascii module, specifically hexlify and unhexlify functions.

Related questions

How to sum all the values in a dictionary?

Let's say I have a dictionary in which the keys map to integers like: d = {'key1': 1,'key2': 14,'key3': 47} Is there a syntactically minimalistic way to return the sum of the values in d—i.e. 62 in this …

Read More
Is a Python dictionary an example of a hash table?

One of the basic data structures in Python is the dictionary, which allows one to record "keys" for looking up "values" of any type. Is this implemented internally as a hash table? If not, what is it?

Read More
TypeError: unhashable type: 'dict', when dict used as a key for another dict

I have this piece of code: for element in json[referenceElement].keys(): When I run that code, I get this error: TypeError: unhashable type: 'dict' What is the cause of that error and what can I do to fix it?

Read More