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SSL_get_ciphers.3ssl
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.\" Automatically generated by Pod::Man 4.11 (Pod::Simple 3.35) .\" .\" 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_get_ciphers, SSL_get_cipher_list, SSL_get_shared_ciphers \&\- get list of available SSL_CIPHERs .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/ssl.h> \& \& STACK_OF(SSL_CIPHER) *SSL_get_ciphers(const SSL *ssl); \& const char *SSL_get_cipher_list(const SSL *ssl, int priority); \& char *SSL_get_shared_ciphers(const SSL *s, char *buf, int size); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" \&\fBSSL_get_ciphers()\fR returns the stack of available SSL_CIPHERs for \fBssl\fR, sorted by preference. If \fBssl\fR is \s-1NULL\s0 or no ciphers are available, \s-1NULL\s0 is returned. .PP \&\fBSSL_get_cipher_list()\fR returns a pointer to the name of the \s-1SSL_CIPHER\s0 listed for \fBssl\fR with \fBpriority\fR. If \fBssl\fR is \s-1NULL,\s0 no ciphers are available, or there are less ciphers than \fBpriority\fR available, \s-1NULL\s0 is returned. .PP \&\fBSSL_get_shared_ciphers()\fR creates a colon separated and \s-1NUL\s0 terminated list of \&\s-1SSL_CIPHER\s0 names that are available in both the client and the server. \fBbuf\fR is the buffer that should be populated with the list of names and \fBsize\fR is the size of that buffer. A pointer to \fBbuf\fR is returned on success or \s-1NULL\s0 on error. If the supplied buffer is not large enough to contain the complete list of names then a truncated list of names will be returned. Note that just because a ciphersuite is available (i.e. it is configured in the cipher list) and shared by both the client and the server it does not mean that it is enabled (for example some ciphers may not be usable by a server if there is not a suitable certificate configured). This function will return available shared ciphersuites whether or not they are enabled. This is a server side function only and must only be called after the completion of the initial handshake. .SH "NOTES" .IX Header "NOTES" The details of the ciphers obtained by \fBSSL_get_ciphers()\fR can be obtained using the \fBSSL_CIPHER_get_name\fR\|(3) family of functions. .PP Call \fBSSL_get_cipher_list()\fR with \fBpriority\fR starting from 0 to obtain the sorted list of available ciphers, until \s-1NULL\s0 is returned. .SH "RETURN VALUES" .IX Header "RETURN VALUES" See \s-1DESCRIPTION\s0 .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBssl\fR\|(3), \fBSSL_CTX_set_cipher_list\fR\|(3), \&\fBSSL_CIPHER_get_name\fR\|(3)