aes256_cbc_enc
aes256_cbc_enc(dev, ecdh, salt, enc) < 0) {
int aes256_cbc_enc(const fido_dev_t *dev, const fido_blob_t *,
if (aes256_cbc_enc(dev, shared, ppin, *out) < 0) {
if (aes256_cbc_enc(dev, shared, ph, *out) < 0) {