[gnutls-devel] GnuTLS | Support RSA-OAEP (!1805)

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Daiki Ueno commented on a discussion on lib/nettle/pk.c: https://gitlab.com/gnutls/gnutls/-/merge_requests/1805#note_1797972800

>  
> +/* This wraps nettle_rsa_encrypt so it returns ciphertext as a byte
> + * array instead of a mpz_t value.  Returns 1 on success; 0 otherwise.
> + */
> +static inline int _rsa_encrypt(const struct rsa_public_key *key, void *rnd_ctx,
> +			       nettle_random_func *rnd_func, size_t length,
> +			       const uint8_t *message, uint8_t *ciphertext)
> +{
> +	mpz_t p;
> +	int ret;
> +
> +	mpz_init(p);
> +
> +	ret = rsa_encrypt(key, rnd_ctx, rnd_func, length, message, p);
> +
> +	if (_gnutls_mpi_bprint_size(p, ciphertext, key->size) < 0) {

Another great point, I've added an early return there.

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