pub unsafe extern "C" fn EVP_KDF_derive(
ctx: *mut EVP_KDF_CTX,
key: *mut c_uchar,
keylen: usize,
params: *const OSSL_PARAM,
) -> c_intpub unsafe extern "C" fn EVP_KDF_derive(
ctx: *mut EVP_KDF_CTX,
key: *mut c_uchar,
keylen: usize,
params: *const OSSL_PARAM,
) -> c_int