No usable version of libssl was found on Apple Silicon M1 Mac

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Code in Azure function breaks locally on M1 Mac when AesGCM does Decrypt

This is the part of the code that breaks

using var cipher = new AesGcm(key);
cipher.Decrypt(nonce, toDecrypt, tag, decryptedData, associatedData);

I have installed openssl and set DYLD_LIBRARY_PATH in ~/.zshrc

Originally the code broke on Intel Mac as well but since I set DYLD_LIBRARY_PATH, it worked. Yet it still breaks on arm-based M1 Mac.

Configuration

  • netcoreapp3.1
  • OS Version: Mac OS Big Sur Version 11.4, (Apple M1), 16 GB
  • Architecture: arm
  • openssl version: LibreSSL 2.8.3, openssl@1.1

Can anyone help please? This seems to be the only issue that stops me from developing in .NET on M1 Mac.

apple-silicon .net-core openssl .net
1 Answers

With Kevin's help, I managed to install Intel version of openssl.

The trick was to use iTerm on Resetta 2 and install Intel version of brew and then to install Intel version of openssl

  • Copy iTerm in the Application directory and rename it to iTerm (Intel)
  • cmd + i and tick on "open using Resetta"
  • On iTerm (Intel), install brew. It will be installed in /usr/local
  • arch -x86_64 /usr/local/bin/brew openssl
  • In ~/.zshrc, set export DYLD_LIBRARY_PATH="/usr/local/opt/openssl@1.1/lib"
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