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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:43:11 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-15 19:43:11 +0000 |
commit | fc22b3d6507c6745911b9dfcc68f1e665ae13dbc (patch) | |
tree | ce1e3bce06471410239a6f41282e328770aa404a /upstream/archlinux/man3/EVP_PKEY_gettable_params.3ssl | |
parent | Initial commit. (diff) | |
download | manpages-l10n-fc22b3d6507c6745911b9dfcc68f1e665ae13dbc.tar.xz manpages-l10n-fc22b3d6507c6745911b9dfcc68f1e665ae13dbc.zip |
Adding upstream version 4.22.0.upstream/4.22.0
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'upstream/archlinux/man3/EVP_PKEY_gettable_params.3ssl')
-rw-r--r-- | upstream/archlinux/man3/EVP_PKEY_gettable_params.3ssl | 188 |
1 files changed, 188 insertions, 0 deletions
diff --git a/upstream/archlinux/man3/EVP_PKEY_gettable_params.3ssl b/upstream/archlinux/man3/EVP_PKEY_gettable_params.3ssl new file mode 100644 index 00000000..2b5f5274 --- /dev/null +++ b/upstream/archlinux/man3/EVP_PKEY_gettable_params.3ssl @@ -0,0 +1,188 @@ +.\" -*- mode: troff; coding: utf-8 -*- +.\" Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43) +.\" +.\" 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 +.. +.\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>. +.ie n \{\ +. ds C` "" +. ds C' "" +'br\} +.el\{\ +. ds C` +. ds C' +'br\} +.\" +.\" Escape single quotes in literal strings from groff's Unicode transform. +.ie \n(.g .ds Aq \(aq +.el .ds Aq ' +.\" +.\" 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'. +.de IX +.. +.nr rF 0 +.if \n(.g .if rF .nr rF 1 +.if (\n(rF:(\n(.g==0)) \{\ +. if \nF \{\ +. de IX +. tm Index:\\$1\t\\n%\t"\\$2" +.. +. if !\nF==2 \{\ +. nr % 0 +. nr F 2 +. \} +. \} +.\} +.rr rF +.\" ======================================================================== +.\" +.IX Title "EVP_PKEY_GETTABLE_PARAMS 3ssl" +.TH EVP_PKEY_GETTABLE_PARAMS 3ssl 2024-01-30 3.2.1 OpenSSL +.\" For nroff, turn off justification. Always turn off hyphenation; it makes +.\" way too many mistakes in technical documents. +.if n .ad l +.nh +.SH NAME +EVP_PKEY_gettable_params, EVP_PKEY_get_params, +EVP_PKEY_get_int_param, EVP_PKEY_get_size_t_param, +EVP_PKEY_get_bn_param, EVP_PKEY_get_utf8_string_param, +EVP_PKEY_get_octet_string_param +\&\- retrieve key parameters from a key +.SH SYNOPSIS +.IX Header "SYNOPSIS" +.Vb 1 +\& #include <openssl/evp.h> +\& +\& const OSSL_PARAM *EVP_PKEY_gettable_params(EVP_PKEY *pkey); +\& int EVP_PKEY_get_params(const EVP_PKEY *pkey, OSSL_PARAM params[]); +\& int EVP_PKEY_get_int_param(const EVP_PKEY *pkey, const char *key_name, +\& int *out); +\& int EVP_PKEY_get_size_t_param(const EVP_PKEY *pkey, const char *key_name, +\& size_t *out); +\& int EVP_PKEY_get_bn_param(const EVP_PKEY *pkey, const char *key_name, +\& BIGNUM **bn); +\& int EVP_PKEY_get_utf8_string_param(const EVP_PKEY *pkey, const char *key_name, +\& char *str, size_t max_buf_sz, +\& size_t *out_len); +\& int EVP_PKEY_get_octet_string_param(const EVP_PKEY *pkey, const char *key_name, +\& unsigned char *buf, size_t max_buf_sz, +\& size_t *out_len); +.Ve +.SH DESCRIPTION +.IX Header "DESCRIPTION" +See \fBOSSL_PARAM\fR\|(3) for information about parameters. +.PP +\&\fBEVP_PKEY_get_params()\fR retrieves parameters from the key \fIpkey\fR, according to +the contents of \fIparams\fR. +.PP +\&\fBEVP_PKEY_gettable_params()\fR returns a constant list of \fIparams\fR indicating +the names and types of key parameters that can be retrieved. +.PP +An \fBOSSL_PARAM\fR\|(3) of type \fBOSSL_PARAM_INTEGER\fR or +\&\fBOSSL_PARAM_UNSIGNED_INTEGER\fR is of arbitrary length. Such a parameter can be +obtained using any of the functions \fBEVP_PKEY_get_int_param()\fR, +\&\fBEVP_PKEY_get_size_t_param()\fR or \fBEVP_PKEY_get_bn_param()\fR. Attempting to +obtain an integer value that does not fit into a native C \fBint\fR type will cause +\&\fBEVP_PKEY_get_int_param()\fR to fail. Similarly attempting to obtain an integer +value that is negative or does not fit into a native C \fBsize_t\fR type using +\&\fBEVP_PKEY_get_size_t_param()\fR will also fail. +.PP +\&\fBEVP_PKEY_get_int_param()\fR retrieves a key \fIpkey\fR integer value \fI*out\fR +associated with a name of \fIkey_name\fR if it fits into \f(CW\*(C`int\*(C'\fR type. For +parameters that do not fit into \f(CW\*(C`int\*(C'\fR use \fBEVP_PKEY_get_bn_param()\fR. +.PP +\&\fBEVP_PKEY_get_size_t_param()\fR retrieves a key \fIpkey\fR size_t value \fI*out\fR +associated with a name of \fIkey_name\fR if it fits into \f(CW\*(C`size_t\*(C'\fR type. For +parameters that do not fit into \f(CW\*(C`size_t\*(C'\fR use \fBEVP_PKEY_get_bn_param()\fR. +.PP +\&\fBEVP_PKEY_get_bn_param()\fR retrieves a key \fIpkey\fR BIGNUM value \fI**bn\fR +associated with a name of \fIkey_name\fR. If \fI*bn\fR is NULL then the BIGNUM +is allocated by the method. +.PP +\&\fBEVP_PKEY_get_utf8_string_param()\fR get a key \fIpkey\fR UTF8 string value into a +buffer \fIstr\fR of maximum size \fImax_buf_sz\fR associated with a name of +\&\fIkey_name\fR. The maximum size must be large enough to accommodate the string +value including a terminating NUL byte, or this function will fail. +If \fIout_len\fR is not NULL, \fI*out_len\fR is set to the length of the string +not including the terminating NUL byte. The required buffer size not including +the terminating NUL byte can be obtained from \fI*out_len\fR by calling the +function with \fIstr\fR set to NULL. +.PP +\&\fBEVP_PKEY_get_octet_string_param()\fR get a key \fIpkey\fR's octet string value into a +buffer \fIbuf\fR of maximum size \fImax_buf_sz\fR associated with a name of \fIkey_name\fR. +If \fIout_len\fR is not NULL, \fI*out_len\fR is set to the length of the contents. +The required buffer size can be obtained from \fI*out_len\fR by calling the +function with \fIbuf\fR set to NULL. +.SH NOTES +.IX Header "NOTES" +These functions only work for \fBEVP_PKEY\fRs that contain a provider side key. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +\&\fBEVP_PKEY_gettable_params()\fR returns NULL on error or if it is not supported. +.PP +All other methods return 1 if a value associated with the key's \fIkey_name\fR was +successfully returned, or 0 if there was an error. +An error may be returned by methods \fBEVP_PKEY_get_utf8_string_param()\fR and +\&\fBEVP_PKEY_get_octet_string_param()\fR if \fImax_buf_sz\fR is not big enough to hold the +value. If \fIout_len\fR is not NULL, \fI*out_len\fR will be assigned the required +buffer size to hold the value. +.SH EXAMPLES +.IX Header "EXAMPLES" +.Vb 1 +\& #include <openssl/evp.h> +\& +\& char curve_name[64]; +\& unsigned char pub[256]; +\& BIGNUM *bn_priv = NULL; +\& +\& /* +\& * NB: assumes \*(Aqkey\*(Aq is set up before the next step. In this example the key +\& * is an EC key. +\& */ +\& +\& if (!EVP_PKEY_get_utf8_string_param(key, OSSL_PKEY_PARAM_GROUP_NAME, +\& curve_name, sizeof(curve_name), &len)) { +\& /* Error */ +\& } +\& if (!EVP_PKEY_get_octet_string_param(key, OSSL_PKEY_PARAM_PUB_KEY, +\& pub, sizeof(pub), &len)) { +\& /* Error */ +\& } +\& if (!EVP_PKEY_get_bn_param(key, OSSL_PKEY_PARAM_PRIV_KEY, &bn_priv)) { +\& /* Error */ +\& } +\& +\& BN_clear_free(bn_priv); +.Ve +.SH "SEE ALSO" +.IX Header "SEE ALSO" +\&\fBEVP_PKEY_CTX_new\fR\|(3), \fBprovider\-keymgmt\fR\|(7), \fBOSSL_PARAM\fR\|(3) +.SH HISTORY +.IX Header "HISTORY" +These functions were added in OpenSSL 3.0. +.SH COPYRIGHT +.IX Header "COPYRIGHT" +Copyright 2020\-2022 The OpenSSL Project Authors. All Rights Reserved. +.PP +Licensed under the Apache License 2.0 (the "License"). You may not use +this file except in compliance with the License. You can obtain a copy +in the file LICENSE in the source distribution or at +<https://www.openssl.org/source/license.html>. |