Function openssl_sys::EVP_PKEY_CTX_set1_hkdf_key
pub unsafe fn EVP_PKEY_CTX_set1_hkdf_key(ctx: *mut EVP_PKEY_CTX, key: *const u8, keylen: c_int) -> c_intThe portability is definied by:
#[cfg(all(ossl110, not(ossl300)))]