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Edit File : EVP_PKEY_CTX_set_rsa_pss_keygen_md.3 \| Size : 7.71 KB
.\" 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" EVP_PKEY_CTX_set_rsa_pss_keygen_md, EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md, EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen \&\- EVP_PKEY RSA\-PSS algorithm support functions .SH "SYNOPSIS" .IX Header "SYNOPSIS" .Vb 1 \& #include <openssl/rsa.h> \& \& int EVP_PKEY_CTX_set_rsa_pss_keygen_md(EVP_PKEY_CTX pctx, \& const EVP_MD md); \& int EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(EVP_PKEY_CTX pctx, \& const EVP_MD md); \& int EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(EVP_PKEY_CTX pctx, \& int saltlen); .Ve .SH "DESCRIPTION" .IX Header "DESCRIPTION" These are the functions that implement \s-1\fBRSA\-PSS\s0\fR\\|(7). .SS "Signing and Verification" .IX Subsection "Signing and Verification" The macro \fBEVP_PKEY_CTX_set_rsa_padding()\fR is supported but an error is returned if an attempt is made to set the padding mode to anything other than \fB\s-1PSS\s0\fR. It is otherwise similar to the \fB\s-1RSA\s0\fR version. .PP The \fBEVP_PKEY_CTX_set_rsa_pss_saltlen()\fR macro is used to set the salt length. If the key has usage restrictions then an error is returned if an attempt is made to set the salt length below the minimum value. It is otherwise similar to the \fB\s-1RSA\s0\fR operation except detection of the salt length (using \&\s-1RSA_PSS_SALTLEN_AUTO\s0) is not supported for verification if the key has usage restrictions. .PP The \fBEVP_PKEY_CTX_set_signature_md()\fR and \fBEVP_PKEY_CTX_set_rsa_mgf1_md()\fR macros are used to set the digest and \s-1MGF1\s0 algorithms respectively. If the key has usage restrictions then an error is returned if an attempt is made to set the digest to anything other than the restricted value. Otherwise these are similar to the \fB\s-1RSA\s0\fR versions. .SS "Key Generation" .IX Subsection "Key Generation" As with \s-1RSA\s0 key generation the \fBEVP_PKEY_CTX_set_rsa_keygen_bits()\fR and \fBEVP_PKEY_CTX_set_rsa_keygen_pubexp()\fR macros are supported for RSA-PSS: they have exactly the same meaning as for the \s-1RSA\s0 algorithm. .PP Optional parameter restrictions can be specified when generating a \s-1PSS\s0 key. If any restrictions are set (using the macros described below) then \fBall\fR parameters are restricted. For example, setting a minimum salt length also restricts the digest and \s-1MGF1\s0 algorithms. If any restrictions are in place then they are reflected in the corresponding parameters of the public key when (for example) a certificate request is signed. .PP \&\fBEVP_PKEY_CTX_set_rsa_pss_keygen_md()\fR restricts the digest algorithm the generated key can use to \fBmd\fR. .PP \&\fBEVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md()\fR restricts the \s-1MGF1\s0 algorithm the generated key can use to \fBmd\fR. .PP \&\fBEVP_PKEY_CTX_set_rsa_pss_keygen_saltlen()\fR restricts the minimum salt length to \fBsaltlen\fR. .SH "NOTES" .IX Header "NOTES" A context for the \fBRSA-PSS\fR algorithm can be obtained by calling: .PP .Vb 1 \& EVP_PKEY_CTX pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_RSA_PSS, NULL); .Ve .SH "RETURN VALUES" .IX Header "RETURN VALUES" All these functions return 1 for success and 0 or a negative value for failure. In particular a return value of \-2 indicates the operation is not supported by the public key algorithm. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\s-1\fBRSA\-PSS\s0\fR\\|(7), \&\fBEVP_PKEY_CTX_new\fR\\|(3), \&\fBEVP_PKEY_CTX_ctrl_str\fR\\|(3), \&\fBEVP_PKEY_derive\fR\\|(3) .SH "COPYRIGHT" .IX Header "COPYRIGHT" Copyright 2017\-2018 The OpenSSL Project Authors. All Rights Reserved. .PP 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>. Back

Edit File : EVP_PKEY_CTX_set_rsa_pss_keygen_md.3 | Size : 7.71 KB

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.\" ========================================================================
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.IX Title "EVP_PKEY_CTX_SET_RSA_PSS_KEYGEN_MD 3"
.TH EVP_PKEY_CTX_SET_RSA_PSS_KEYGEN_MD 3 "2023-09-11" "1.1.1w" "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_CTX_set_rsa_pss_keygen_md, EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md, EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen \&\- EVP_PKEY RSA\-PSS algorithm support functions
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/rsa.h>
\&
\& int EVP_PKEY_CTX_set_rsa_pss_keygen_md(EVP_PKEY_CTX *pctx,
\&                                        const EVP_MD *md);
\& int EVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md(EVP_PKEY_CTX *pctx,
\&                                             const EVP_MD *md);
\& int EVP_PKEY_CTX_set_rsa_pss_keygen_saltlen(EVP_PKEY_CTX *pctx,
\&                                             int saltlen);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
These are the functions that implement \s-1\fBRSA\-PSS\s0\fR\|(7).
.SS "Signing and Verification"
.IX Subsection "Signing and Verification"
The macro \fBEVP_PKEY_CTX_set_rsa_padding()\fR is supported but an error is
returned if an attempt is made to set the padding mode to anything other
than \fB\s-1PSS\s0\fR. It is otherwise similar to the \fB\s-1RSA\s0\fR version.
.PP
The \fBEVP_PKEY_CTX_set_rsa_pss_saltlen()\fR macro is used to set the salt length.
If the key has usage restrictions then an error is returned if an attempt is
made to set the salt length below the minimum value. It is otherwise similar
to the \fB\s-1RSA\s0\fR operation except detection of the salt length (using
\&\s-1RSA_PSS_SALTLEN_AUTO\s0) is not supported for verification if the key has
usage restrictions.
.PP
The \fBEVP_PKEY_CTX_set_signature_md()\fR and \fBEVP_PKEY_CTX_set_rsa_mgf1_md()\fR macros
are used to set the digest and \s-1MGF1\s0 algorithms respectively. If the key has
usage restrictions then an error is returned if an attempt is made to set the
digest to anything other than the restricted value. Otherwise these are
similar to the \fB\s-1RSA\s0\fR versions.
.SS "Key Generation"
.IX Subsection "Key Generation"
As with \s-1RSA\s0 key generation the \fBEVP_PKEY_CTX_set_rsa_keygen_bits()\fR
and \fBEVP_PKEY_CTX_set_rsa_keygen_pubexp()\fR macros are supported for RSA-PSS:
they have exactly the same meaning as for the \s-1RSA\s0 algorithm.
.PP
Optional parameter restrictions can be specified when generating a \s-1PSS\s0 key.
If any restrictions are set (using the macros described below) then \fBall\fR
parameters are restricted. For example, setting a minimum salt length also
restricts the digest and \s-1MGF1\s0 algorithms. If any restrictions are in place
then they are reflected in the corresponding parameters of the public key
when (for example) a certificate request is signed.
.PP
\&\fBEVP_PKEY_CTX_set_rsa_pss_keygen_md()\fR restricts the digest algorithm the
generated key can use to \fBmd\fR.
.PP
\&\fBEVP_PKEY_CTX_set_rsa_pss_keygen_mgf1_md()\fR restricts the \s-1MGF1\s0 algorithm the
generated key can use to \fBmd\fR.
.PP
\&\fBEVP_PKEY_CTX_set_rsa_pss_keygen_saltlen()\fR restricts the minimum salt length
to \fBsaltlen\fR.
.SH "NOTES"
.IX Header "NOTES"
A context for the \fBRSA-PSS\fR algorithm can be obtained by calling:
.PP
.Vb 1
\& EVP_PKEY_CTX *pctx = EVP_PKEY_CTX_new_id(EVP_PKEY_RSA_PSS, NULL);
.Ve
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
All these functions return 1 for success and 0 or a negative value for failure.
In particular a return value of \-2 indicates the operation is not supported by
the public key algorithm.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\s-1\fBRSA\-PSS\s0\fR\|(7),
\&\fBEVP_PKEY_CTX_new\fR\|(3),
\&\fBEVP_PKEY_CTX_ctrl_str\fR\|(3),
\&\fBEVP_PKEY_derive\fR\|(3)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2017\-2018 The OpenSSL Project Authors. All Rights Reserved.
.PP
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>.

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