Hi, I suspect I already know the answer, but... is there a way to have a non-heap based structure like EVP_MD_CTX? If I don't want to have one be malloc'd (or OPENSSL_zalloc'd as the case may be), I can't have one be a stack variable or static, can I? I ask because I'm trying to replace some existing code that has no path to handle out-of-memory exceptions if EVP_MD_CTX_create() ever returns NULL... I guess the point of crypto/evp/evp_local.h is to completely hide details of the structure, including its size... so the answer to the original question is probably "no". But I just wanted to make sure. Thanks, -Philip