This version of the libxcrypt package ships the libcrypt.so.2 library and does not provide the legacy API functions that have been provided by glibc's libcrypt.so.1. The removed functions by name are encrypt, encrypt_r, setkey, setkey_r, and fcrypt. If you are using a third-party application that links against those functions, or that is linked against glibc's libcrypt, you may need to install the libxcrypt-compat package manually. All existing binary executables linked against glibc's libcrypt should work unmodified with the libcrypt.so.1 library supplied by the libxcrypt-compat package.