kdf_argon2_derive
{ OSSL_FUNC_KDF_DERIVE, (void (*)(void))kdf_argon2_derive },
{ OSSL_FUNC_KDF_DERIVE, (void (*)(void))kdf_argon2_derive },
{ OSSL_FUNC_KDF_DERIVE, (void (*)(void))kdf_argon2_derive },
static OSSL_FUNC_kdf_derive_fn kdf_argon2_derive;
static int kdf_argon2_derive(void *vctx, unsigned char *out, size_t outlen,