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Diffstat (limited to 'secure/lib/libcrypto/man/man3/EVP_PKEY_CTX_set_rsa_pss_keygen_md.3')
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diff --git a/secure/lib/libcrypto/man/man3/EVP_PKEY_CTX_set_rsa_pss_keygen_md.3 b/secure/lib/libcrypto/man/man3/EVP_PKEY_CTX_set_rsa_pss_keygen_md.3 new file mode 100644 index 000000000000..939d29cac16b --- /dev/null +++ b/secure/lib/libcrypto/man/man3/EVP_PKEY_CTX_set_rsa_pss_keygen_md.3 @@ -0,0 +1,222 @@ +.\" Automatically generated by Pod::Man 4.11 (Pod::Simple 3.39) +.\" +.\" 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>. |