OpenSSL 1.1.0 deprecated HMAC_Init, HMAC_CTX_init, HMAC_CTX_cleanup
OpenSSL 1.1.0 deprecated HMAC_Init, HMAC_CTX_init, HMAC_CTX_cleanup

contain version dependent init/destroy code in hmac_new and hmac_destroy
use HMAC_CTX_Init_ex

sg2342/pam_ocra