NAME
SSL_get_finished,
SSL_get_peer_finished —
get last sent or last expected finished
message
SYNOPSIS
#include
<openssl/ssl.h>
size_t
SSL_get_finished(const
SSL *ssl, void
*buf, size_t
count);
size_t
SSL_get_peer_finished(const
SSL *ssl, void
*buf, size_t
count);
DESCRIPTION
SSL_get_finished()
and
SSL_get_peer_finished()
copy count bytes from the last finished message sent
to the peer or expected from the peer into the caller-provided buffer
buf.
The finished message is computed from a checksum of the handshake
records exchanged with the peer. Its length depends on the ciphersuite in
use and is at most EVP_MAX_MD_SIZE, i.e., 64
bytes.
RETURN VALUES
SSL_get_finished() and
SSL_get_peer_finished() return the number of bytes
copied into buf. The return value is zero if the
handshake has not reached the finished message.
SEE ALSO
STANDARDS
RFC 8446: The Transport Layer Security (TLS) Protocol Version 1.3, section 4.4.4: Finished.
RFC 5246: The Transport Layer Security (TLS) Protocol Version 1.2, section 7.4.9: Finished.
HISTORY
SSL_get_finished() and
SSL_get_peer_finished() first appeared in SSLeay
0.9.5 and have been available since OpenBSD 2.7.