73 lines
2.4 KiB
Groff
73 lines
2.4 KiB
Groff
.\" $OpenBSD: X509_check_private_key.3,v 1.6 2019/06/06 01:06:59 schwarze Exp $
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.\" OpenSSL X509_check_private_key.pod 09ddb878 Jun 5 03:56:07 2017 +0800
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.\"
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.\" Copyright (c) 2017 Ingo Schwarze <schwarze@openbsd.org>
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.\"
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.\" Permission to use, copy, modify, and distribute this software for any
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.\" purpose with or without fee is hereby granted, provided that the above
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.\" copyright notice and this permission notice appear in all copies.
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.\"
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.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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.\"
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.Dd $Mdocdate: June 6 2019 $
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.Dt X509_CHECK_PRIVATE_KEY 3
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.Os
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.Sh NAME
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.Nm X509_check_private_key ,
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.Nm X509_REQ_check_private_key
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.Nd compare public key components
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.Sh SYNOPSIS
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.In openssl/x509.h
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.Ft int
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.Fo X509_check_private_key
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.Fa "const X509 *x"
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.Fa "const EVP_PKEY *k"
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.Fc
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.Ft int
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.Fo X509_REQ_check_private_key
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.Fa "X509_REQ *x"
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.Fa "EVP_PKEY *k"
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.Fc
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.Sh DESCRIPTION
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These functions are seriously misnamed.
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.Fn X509_check_private_key
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compares the
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.Em public
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key components (e.g. exponent and modulus of an RSA key)
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and parameters (e.g. EC params of an EC key) of
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.Fa k
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with the corresponding properties of
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.Fa x .
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Despite the name, it neither checks whether
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.Fa k
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contains private key components at all, nor, if any are present,
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whether they are consistent with the public key components.
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.Pp
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.Fn X509_REQ_check_private_key
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is equivalent to
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.Fn X509_check_private_key
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except that it compares to the public key
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contained in a certificate request.
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.Sh RETURN VALUES
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These functions return 1 if the public key components and parameters
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match, or 0 if they do not or if an error occurs.
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On error or mismatch, a reason code can be obtained using
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.Xr ERR_get_error 3 .
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.Sh SEE ALSO
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.Xr SSL_check_private_key 3 ,
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.Xr X509_new 3 ,
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.Xr X509_REQ_new 3
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.Sh HISTORY
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.Fn X509_check_private_key
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first appeared in SSLeay 0.6.5 and has been available since
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.Ox 2.4 .
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.Pp
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.Fn X509_REQ_check_private_key
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first appeared in OpenSSL 0.9.8 and has been available since
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.Ox 4.5 .
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