Locking callback function in 1.1 and 3.0 versions

[manoj4617]

In my C codebase, I was using Openssl 1.0 and now I am upgrading to Openssl 3.0, the locking callback functions which I had used in my C codebase to lock and unlock mutexes, CRYPTO_set_locking_callback and CRYPTO_set_id_callback have been deprecated.

I am confused about how to use the new threading API of Openssl 3.0 which basically says to use OPENSSL_init_crypto and OPENSSL_init_ssl, which will do all the work.

I wanted to know is there any replacement for the two functions I have mentioned for callbacks ??

[mattcaswell]

There is no replacement. They can simply be removed. OpenSSL 1.1.0+ uses either pthreads or windows threads as applicable automatically without the need for the callbacks.