xref: /freebsd/secure/lib/libcrypto/man/man3/SSL_get_current_cipher.3 (revision c1839039b193b48c8eb7520c75487f0bd4340c3b)
Automatically generated by Pod::Man 4.14 (Pod::Simple 3.40)

Standard preamble:
========================================================================
..
..
.. 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++. 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- . 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\} . ds -- \|\(em\| . ds PI \(*p . ds L" `` . ds R" '' . ds C` . ds C' 'br\}
Escape single quotes in literal strings from groff's Unicode transform.

If the F register is >0, we'll generate index entries on stderr for
titles (.TH), headers (.SH), subsections (.SS), items (.Ip), and index
entries marked with X<> in POD. Of course, you'll have to process the
output yourself in some meaningful fashion.

Avoid warning from groff about undefined register 'F'.
.. .nr rF 0 . if \nF \{\ . de IX . tm Index:\\$1\t\\n%\t"\\$2" .. . if !\nF==2 \{\ . nr % 0 . nr F 2 . \} . \} .\} .rr rF
Accent mark definitions (@(#)ms.acc 1.5 88/02/08 SMI; from UCB 4.2).
Fear. Run. Save yourself. No user-serviceable parts.
. \" fudge factors for nroff and troff . ds #H 0 . ds #V .8m . ds #F .3m . ds #[ \f1 . ds #] .\} . ds #H ((1u-(\\\\n(.fu%2u))*.13m) . ds #V .6m . ds #F 0 . ds #[ \& . ds #] \& .\} . \" simple accents for nroff and troff . ds ' \& . ds ` \& . ds ^ \& . ds , \& . ds ~ ~ . ds / .\} . 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 . \" corrections for vroff . \" for low resolution devices (crt and lpr) \{\ . 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 .\} ========================================================================

Title "SSL_GET_CURRENT_CIPHER 3"
SSL_GET_CURRENT_CIPHER 3 "2023-05-30" "1.1.1u" "OpenSSL"
For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
"NAME"
SSL_get_current_cipher, SSL_get_cipher_name, SSL_get_cipher, SSL_get_cipher_bits, SSL_get_cipher_version, SSL_get_pending_cipher - get SSL_CIPHER of a connection
"SYNOPSIS"
Header "SYNOPSIS" .Vb 1 #include <openssl/ssl.h> \& const SSL_CIPHER *SSL_get_current_cipher(const SSL *ssl); const SSL_CIPHER *SSL_get_pending_cipher(const SSL *ssl); \& const char *SSL_get_cipher_name(const SSL *s); const char *SSL_get_cipher(const SSL *s); int SSL_get_cipher_bits(const SSL *s, int *np); const char *SSL_get_cipher_version(const SSL *s); .Ve
"DESCRIPTION"
Header "DESCRIPTION" \fBSSL_get_current_cipher() returns a pointer to an \s-1SSL_CIPHER\s0 object containing the description of the actually used cipher of a connection established with the ssl object. See SSL_CIPHER_get_name\|(3) for more details.

\fBSSL_get_cipher_name() obtains the name of the currently used cipher. \fBSSL_get_cipher() is identical to SSL_get_cipher_name(). \fBSSL_get_cipher_bits() is a macro to obtain the number of secret/algorithm bits used and \fBSSL_get_cipher_version() returns the protocol name.

\fBSSL_get_pending_cipher() returns a pointer to an \s-1SSL_CIPHER\s0 object containing the description of the cipher (if any) that has been negotiated for future use on the connection established with the ssl object, but is not yet in use. This may be the case during handshake processing, when control flow can be returned to the application via any of several callback methods. The internal sequencing of handshake processing and callback invocation is not guaranteed to be stable from release to release, and at present only the callback set by SSL_CTX_set_alpn_select_cb() is guaranteed to have a non-NULL return value. Other callbacks may be added to this list over time.

"RETURN VALUES"
Header "RETURN VALUES" \fBSSL_get_current_cipher() returns the cipher actually used, or \s-1NULL\s0 if no session has been established.

\fBSSL_get_pending_cipher() returns the cipher to be used at the next change of cipher suite, or \s-1NULL\s0 if no such cipher is known.

"NOTES"
Header "NOTES" SSL_get_cipher, SSL_get_cipher_bits, SSL_get_cipher_version, and SSL_get_cipher_name are implemented as macros.
"SEE ALSO"
Header "SEE ALSO" \fBssl\|(7), SSL_CIPHER_get_name\|(3)
"COPYRIGHT"
Header "COPYRIGHT" Copyright 2000-2022 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.