Ubuntu 22.04 - ValueError: unsupported hash type ripemd160

[reisenmachtfreude]

Using Ubuntun 22.04 and Python 3.10.6 the code throws an error

my_key = PrivateKeyTestnet()
print(my_key.address)

 File "/home/user/.local/lib/python3.10/site-packages/bit/wallet.py", line 572, in address
    self._address = public_key_to_address(self._public_key, version=self.version)
  File "/home/user/.local/lib/python3.10/site-packages/bit/format.py", line 121, in public_key_to_address
    return b58encode_check(version + ripemd160_sha256(public_key))
  File "/home/user/.local/lib/python3.10/site-packages/bit/crypto.py", line 19, in ripemd160_sha256
    return new('ripemd160', sha256(bytestr)).digest()
  File "/usr/lib/python3.10/hashlib.py", line 166, in __hash_new
    return __get_builtin_constructor(name)(data)
  File "/usr/lib/python3.10/hashlib.py", line 123, in __get_builtin_constructor
    raise ValueError('unsupported hash type ' + name)
ValueError: unsupported hash type ripemd160

Using same code in virtual env python3.9 does work.

[cibermosso]

Is a problem with openssl, basically ripemd160 was dissable, if you want you can activate again:

The issue can be resolved by adding this lines to /etc/ssl/openssl.cnf:

[openssl_init]
providers = provider_sect

List of providers to load

[provider_sect]
default = default_sect
+legacy = legacy_sect

[default_sect]
activate = 1

+[legacy_sect]
+activate = 1

Check this link
https://stackoverflow.com/questions/72409563/unsupported-hash-type-ripemd160-with-hashlib-in-python

[NateNate60]

I wonder why this issue isn't getting more attention. It would seem like this is a breaking issue that affects a very sizable portion of users. Is it absolutely necessary to use ripemd160 or can a substitute be used that is enabled by default in OpenSSL?

[ofek]

See image on https://en.bitcoinwiki.org/wiki/Bitcoin_address#Purpose_and_opportunities

[paulocoutinhox]

I add a PR to solve this:
#184

[ofek]

I can't reproduce the issue:

~\Desktop
❯ docker run --rm debian bash -c "apt-get update > /dev/null && apt-get install -y python3 > /dev/null && python3 -c \"import hashlib;print('ripemd160' in hashlib.algorithms_available)\""
debconf: delaying package configuration, since apt-utils is not installed
True

~\Desktop
❯ docker run --rm python:3.9 python -c "import hashlib;print('ripemd160' in hashlib.algorithms_available)"
True

~\Desktop
❯ docker run --rm python:3.10 python -c "import hashlib;print('ripemd160' in hashlib.algorithms_available)"
True

~\Desktop
❯ docker run --rm python:3.11 python -c "import hashlib;print('ripemd160' in hashlib.algorithms_available)"
True

~\Desktop
❯ docker run --rm python:3.12 python -c "import hashlib;print('ripemd160' in hashlib.algorithms_available)"
True

~\Desktop
❯ docker run --rm python:3.13 python -c "import hashlib;print('ripemd160' in hashlib.algorithms_available)"
True

[paulocoutinhox]

We have the problem. Depend on system config.

[paulocoutinhox]

Are you using macOS?

[ofek]

I just tried on the latest version of macOS using Python from Homebrew and it's also available there.

[paulocoutinhox]

• Unsupported hash type ripemd160 pybitcash/bitcash#118
• Openssl has disabled RIPEMD160 by default ethereum/execution-specs#506
• https://stackoverflow.com/questions/72409563/unsupported-hash-type-ripemd160-with-hashlib-in-python

it was removed by default in some versions and was re-added recently, so, as i said, depends of your system, libs etc.