If you're writing cryptographic routines you should either use the platform cryptography libraries, or follow the documentation: https://developer.apple.com/do

If you're writing cryptographic routines you should either use the platform cryptography libraries, or follow the documentation: https://developer.apple.com/documentation/xcode/writing-arm64-code-for-apple-platforms#Enable-DIT-for-constant-time-cryptographic-operations https://developer.apple.com/documentation/xcode/writing-arm6...