Espressif ESP32-S2 Programming Manual page 563

Chapter 2. API Reference
cert - a point pointed to X509 certification
buffer - a point pointed to the certification context memory point
length - certification bytes
Return:
X509 certification object point
Description:
load a character certification context into system context. If '*cert'
pointed to the
→
certification, then load certification into it. Or create a new
certification object
→
Example:
void example(void)
{
X509 *new;
X509 *cert;
unsigned char *buffer;
long len;
... ...
new = d2i_X509(&cert, buffer, len);
}
4.2 int SSL_add_client_CA (SSL * ssl, X509 * x)
Arguments:
ssl - SSL point
x - CA certification point
Return:
1 : OK
0 : failed
Description:
add CA client certification into the SSL
Example:
void example(void)
{
int ret;
SSL *ssl;
X509 *new;
... ...
ret = SSL_add_client_CA(ssl, new);
}
4.3 int SSL_CTX_add_client_CA (SSL_CTX * ctx, X509 * x)
Arguments:
ctx - SSL context point
x - CA certification point
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