CRYPTO_128_unwrap
return CRYPTO_128_unwrap(key, iv, out, in, inlen,
rv = CRYPTO_128_unwrap(&wctx->ks.ks, wctx->iv,
size_t CRYPTO_128_unwrap(void *key, const unsigned char *iv,
wctx->wrapfn = enc ? CRYPTO_128_wrap : CRYPTO_128_unwrap;