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Diffstat (limited to 'secure/lib/libssl/man/SSL_CTX_use_psk_identity_hint.3')
-rw-r--r-- | secure/lib/libssl/man/SSL_CTX_use_psk_identity_hint.3 | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/secure/lib/libssl/man/SSL_CTX_use_psk_identity_hint.3 b/secure/lib/libssl/man/SSL_CTX_use_psk_identity_hint.3 new file mode 100644 index 0000000..6e2bacf --- /dev/null +++ b/secure/lib/libssl/man/SSL_CTX_use_psk_identity_hint.3 @@ -0,0 +1,198 @@ +.\" Automatically generated by Pod::Man 2.23 (Pod::Simple 3.22) +.\" +.\" Standard preamble: +.\" ======================================================================== +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Vb \" Begin verbatim text +.ft CW +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R +.fi +.. +.\" Set up some character translations and predefined strings. \*(-- will +.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left +.\" double quote, and \*(R" will give a right double quote. \*(C+ will +.\" give a nicer C++. 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Always turn off hyphenation; it makes +.\" way too many mistakes in technical documents. +.if n .ad l +.nh +.SH "NAME" +SSL_CTX_use_psk_identity_hint, SSL_use_psk_identity_hint, +SSL_CTX_set_psk_server_callback, SSL_set_psk_server_callback \- set PSK +identity hint to use +.SH "SYNOPSIS" +.IX Header "SYNOPSIS" +.Vb 1 +\& #include <openssl/ssl.h> +\& +\& int SSL_CTX_use_psk_identity_hint(SSL_CTX *ctx, const char *hint); +\& int SSL_use_psk_identity_hint(SSL *ssl, const char *hint); +\& +\& void SSL_CTX_set_psk_server_callback(SSL_CTX *ctx, +\& unsigned int (*callback)(SSL *ssl, const char *identity, +\& unsigned char *psk, int max_psk_len)); +\& void SSL_set_psk_server_callback(SSL *ssl, +\& unsigned int (*callback)(SSL *ssl, const char *identity, +\& unsigned char *psk, int max_psk_len)); +.Ve +.SH "DESCRIPTION" +.IX Header "DESCRIPTION" +\&\fISSL_CTX_use_psk_identity_hint()\fR sets the given \fB\s-1NULL\s0\fR\-terminated \s-1PSK\s0 +identity hint \fBhint\fR to \s-1SSL\s0 context object +\&\fBctx\fR. \fISSL_use_psk_identity_hint()\fR sets the given \fB\s-1NULL\s0\fR\-terminated +\&\s-1PSK\s0 identity hint \fBhint\fR to \s-1SSL\s0 connection object \fBssl\fR. If \fBhint\fR +is \fB\s-1NULL\s0\fR the current hint from \fBctx\fR or \fBssl\fR is deleted. +.PP +In the case where \s-1PSK\s0 identity hint is \fB\s-1NULL\s0\fR, the server +does not send the ServerKeyExchange message to the client. +.PP +A server application must provide a callback function which is called +when the server receives the ClientKeyExchange message from the +client. The purpose of the callback function is to validate the +received \s-1PSK\s0 identity and to fetch the pre-shared key used during the +connection setup phase. The callback is set using functions +\&\fISSL_CTX_set_psk_server_callback()\fR or +\&\fISSL_set_psk_server_callback()\fR. The callback function is given the +connection in parameter \fBssl\fR, \fB\s-1NULL\s0\fR\-terminated \s-1PSK\s0 identity sent +by the client in parameter \fBidentity\fR, and a buffer \fBpsk\fR of length +\&\fBmax_psk_len\fR bytes where the pre-shared key is to be stored. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +\&\fISSL_CTX_use_psk_identity_hint()\fR and \fISSL_use_psk_identity_hint()\fR return +1 on success, 0 otherwise. +.PP +Return values from the server callback are interpreted as follows: +.IP "> 0" 4 +.IX Item "> 0" +\&\s-1PSK\s0 identity was found and the server callback has provided the \s-1PSK\s0 +successfully in parameter \fBpsk\fR. Return value is the length of +\&\fBpsk\fR in bytes. It is an error to return a value greater than +\&\fBmax_psk_len\fR. +.Sp +If the \s-1PSK\s0 identity was not found but the callback instructs the +protocol to continue anyway, the callback must provide some random +data to \fBpsk\fR and return the length of the random data, so the +connection will fail with decryption_error before it will be finished +completely. +.IP "0" 4 +\&\s-1PSK\s0 identity was not found. An \*(L"unknown_psk_identity\*(R" alert message +will be sent and the connection setup fails. +.SH "POD ERRORS" +.IX Header "POD ERRORS" +Hey! \fBThe above document had some coding errors, which are explained below:\fR +.IP "Around line 84:" 4 +.IX Item "Around line 84:" +\&'=item' outside of any '=over' |