diff options
Diffstat (limited to 'secure/lib/libcrypto/man/SSL_CTX_set_cipher_list.3')
-rw-r--r-- | secure/lib/libcrypto/man/SSL_CTX_set_cipher_list.3 | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/secure/lib/libcrypto/man/SSL_CTX_set_cipher_list.3 b/secure/lib/libcrypto/man/SSL_CTX_set_cipher_list.3 new file mode 100644 index 0000000..86fbd9a --- /dev/null +++ b/secure/lib/libcrypto/man/SSL_CTX_set_cipher_list.3 @@ -0,0 +1,205 @@ +.\" Automatically generated by Pod::Man version 1.15 +.\" Thu May 9 13:20:14 2002 +.\" +.\" Standard preamble: +.\" ====================================================================== +.de Sh \" Subsection heading +.br +.if t .Sp +.ne 5 +.PP +\fB\\$1\fR +.PP +.. +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Ip \" List item +.br +.ie \\n(.$>=3 .ne \\$3 +.el .ne 3 +.IP "\\$1" \\$2 +.. +.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. | will give a +.\" real vertical bar. \*(C+ will give a nicer C++. Capital omega is used +.\" to do unbreakable dashes and therefore won't be available. \*(C` and +.\" \*(C' expand to `' in nroff, nothing in troff, for use with C<> +.tr \(*W-|\(bv\*(Tr +.ds C+ C\v'-.1v'\h'-1p'\s-2+\h'-1p'+\s0\v'.1v'\h'-1p' +.ie n \{\ +. ds -- \(*W- +. ds PI pi +. if (\n(.H=4u)&(1m=24u) .ds -- \(*W\h'-12u'\(*W\h'-12u'-\" diablo 10 pitch +. if (\n(.H=4u)&(1m=20u) .ds -- \(*W\h'-12u'\(*W\h'-8u'-\" diablo 12 pitch +. ds L" "" +. ds R" "" +. ds C` "" +. ds C' "" +'br\} +.el\{\ +. ds -- \|\(em\| +. ds PI \(*p +. ds L" `` +. ds R" '' +'br\} +.\" +.\" If the F register is turned on, we'll generate index entries on stderr +.\" for titles (.TH), headers (.SH), subsections (.Sh), items (.Ip), and +.\" index entries marked with X<> in POD. Of course, you'll have to process +.\" the output yourself in some meaningful fashion. +.if \nF \{\ +. de IX +. tm Index:\\$1\t\\n%\t"\\$2" +.. +. nr % 0 +. rr F +.\} +.\" +.\" For nroff, turn off justification. Always turn off hyphenation; it +.\" makes way too many mistakes in technical documents. +.hy 0 +.if n .na +.\" +.\" Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2). +.\" Fear. Run. Save yourself. No user-serviceable parts. +.bd B 3 +. \" fudge factors for nroff and troff +.if n \{\ +. ds #H 0 +. ds #V .8m +. ds #F .3m +. ds #[ \f1 +. ds #] \fP +.\} +.if t \{\ +. ds #H ((1u-(\\\\n(.fu%2u))*.13m) +. ds #V .6m +. ds #F 0 +. ds #[ \& +. ds #] \& +.\} +. \" simple accents for nroff and troff +.if n \{\ +. ds ' \& +. ds ` \& +. ds ^ \& +. ds , \& +. ds ~ ~ +. ds / +.\} +.if t \{\ +. ds ' \\k:\h'-(\\n(.wu*8/10-\*(#H)'\'\h"|\\n:u" +. ds ` \\k:\h'-(\\n(.wu*8/10-\*(#H)'\`\h'|\\n:u' +. ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'^\h'|\\n:u' +. ds , \\k:\h'-(\\n(.wu*8/10)',\h'|\\n:u' +. ds ~ \\k:\h'-(\\n(.wu-\*(#H-.1m)'~\h'|\\n:u' +. ds / \\k:\h'-(\\n(.wu*8/10-\*(#H)'\z\(sl\h'|\\n:u' +.\} +. \" troff and (daisy-wheel) nroff accents +.ds : \\k:\h'-(\\n(.wu*8/10-\*(#H+.1m+\*(#F)'\v'-\*(#V'\z.\h'.2m+\*(#F'.\h'|\\n:u'\v'\*(#V' +.ds 8 \h'\*(#H'\(*b\h'-\*(#H' +.ds o \\k:\h'-(\\n(.wu+\w'\(de'u-\*(#H)/2u'\v'-.3n'\*(#[\z\(de\v'.3n'\h'|\\n:u'\*(#] +.ds d- \h'\*(#H'\(pd\h'-\w'~'u'\v'-.25m'\f2\(hy\fP\v'.25m'\h'-\*(#H' +.ds D- D\\k:\h'-\w'D'u'\v'-.11m'\z\(hy\v'.11m'\h'|\\n:u' +.ds th \*(#[\v'.3m'\s+1I\s-1\v'-.3m'\h'-(\w'I'u*2/3)'\s-1o\s+1\*(#] +.ds Th \*(#[\s+2I\s-2\h'-\w'I'u*3/5'\v'-.3m'o\v'.3m'\*(#] +.ds ae a\h'-(\w'a'u*4/10)'e +.ds Ae A\h'-(\w'A'u*4/10)'E +. \" corrections for vroff +.if v .ds ~ \\k:\h'-(\\n(.wu*9/10-\*(#H)'\s-2\u~\d\s+2\h'|\\n:u' +.if v .ds ^ \\k:\h'-(\\n(.wu*10/11-\*(#H)'\v'-.4m'^\v'.4m'\h'|\\n:u' +. \" for low resolution devices (crt and lpr) +.if \n(.H>23 .if \n(.V>19 \ +\{\ +. ds : e +. ds 8 ss +. ds o a +. ds d- d\h'-1'\(ga +. ds D- D\h'-1'\(hy +. ds th \o'bp' +. ds Th \o'LP' +. ds ae ae +. ds Ae AE +.\} +.rm #[ #] #H #V #F C +.\" ====================================================================== +.\" +.IX Title "SSL_CTX_SET_CIPHER_LIST 1" +.TH SSL_CTX_SET_CIPHER_LIST 1 "perl v5.6.1" "2002-01-27" "User Contributed Perl Documentation" +.UC +.SH "NAME" +SSL_CTX_set_cipher_list, SSL_set_cipher_list \- choose list of available SSL_CIPHERs +.SH "SYNOPSIS" +.IX Header "SYNOPSIS" +.Vb 1 +\& #include <openssl/ssl.h> +.Ve +.Vb 2 +\& int SSL_CTX_set_cipher_list(SSL_CTX *ctx, const char *str); +\& int SSL_set_cipher_list(SSL *ssl, const char *str); +.Ve +.SH "DESCRIPTION" +.IX Header "DESCRIPTION" +\&\fISSL_CTX_set_cipher_list()\fR sets the list of available ciphers for \fBctx\fR +using the control string \fBstr\fR. The format of the string is described +in ciphers(1). The list of ciphers is inherited by all +\&\fBssl\fR objects created from \fBctx\fR. +.PP +\&\fISSL_set_cipher_list()\fR sets the list of ciphers only for \fBssl\fR. +.SH "NOTES" +.IX Header "NOTES" +The control string \fBstr\fR should be universally usable and not depend +on details of the library configuration (ciphers compiled in). Thus no +syntax checking takes place. Items that are not recognized, because the +corresponding ciphers are not compiled in or because they are mistyped, +are simply ignored. Failure is only flagged if no ciphers could be collected +at all. +.PP +It should be noted, that inclusion of a cipher to be used into the list is +a necessary condition. On the client side, the inclusion into the list is +also sufficient. On the server side, additional restrictions apply. All ciphers +have additional requirements. \s-1ADH\s0 ciphers don't need a certificate, but +DH-parameters must have been set. All other ciphers need a corresponding +certificate and key. +.PP +A \s-1RSA\s0 cipher can only be chosen, when a \s-1RSA\s0 certificate is available. +\&\s-1RSA\s0 export ciphers with a keylength of 512 bits for the \s-1RSA\s0 key require +a temporary 512 bit \s-1RSA\s0 key, as typically the supplied key has a length +of 1024 bit (see +SSL_CTX_set_tmp_rsa_callback(3)). +\&\s-1RSA\s0 ciphers using \s-1EDH\s0 need a certificate and key and additional DH-parameters +(see SSL_CTX_set_tmp_dh_callback(3)). +.PP +A \s-1DSA\s0 cipher can only be chosen, when a \s-1DSA\s0 certificate is available. +\&\s-1DSA\s0 ciphers always use \s-1DH\s0 key exchange and therefore need DH-parameters +(see SSL_CTX_set_tmp_dh_callback(3)). +.PP +When these conditions are not met for any cipher in the list (e.g. a +client only supports export \s-1RSA\s0 ciphers with a asymmetric key length +of 512 bits and the server is not configured to use temporary \s-1RSA\s0 +keys), the \*(L"no shared cipher\*(R" (\s-1SSL_R_NO_SHARED_CIPHER\s0) error is generated +and the handshake will fail. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +\&\fISSL_CTX_set_cipher_list()\fR and \fISSL_set_cipher_list()\fR return 1 if any cipher +could be selected and 0 on complete failure. +.SH "SEE ALSO" +.IX Header "SEE ALSO" +ssl(3), SSL_get_ciphers(3), +SSL_CTX_use_certificate(3), +SSL_CTX_set_tmp_rsa_callback(3), +SSL_CTX_set_tmp_dh_callback(3), +ciphers(1) |