SSL_get0_peer_scts.3ssl man page
SSL_get0_peer_scts — get SCTs received
const STACK_OF(SCT) *SSL_get0_peer_scts(SSL *s);
SSL_get0_peer_scts() returns the signed certificate timestamps (SCTs) that have been received. If this is the first time that this function has been called for a given SSL instance, it will examine the TLS extensions, OCSP response and the peer's certificate for SCTs. Future calls will return the same SCTs.
If no Certificate Transparency validation callback has been set (using SSL_CTX_set_ct_validation_callback or SSL_set_ct_validation_callback), this function is not guaranteed to return all of the SCTs that the peer is capable of sending.
SSL_get0_peer_scts() returns a list of SCTs found, or NULL if an error occurs.
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Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at https://www.openssl.org/source/license.….