68 lines
1.9 KiB
Groff
68 lines
1.9 KiB
Groff
.\" $OpenBSD: X509_SIG_new.3,v 1.5 2021/10/27 11:24:47 schwarze Exp $
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.\"
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.\" Copyright (c) 2016 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: October 27 2021 $
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.Dt X509_SIG_NEW 3
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.Os
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.Sh NAME
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.Nm X509_SIG_new ,
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.Nm X509_SIG_free
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.Nd PKCS#7 digest information
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.Sh SYNOPSIS
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.In openssl/x509.h
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.Ft X509_SIG *
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.Fn X509_SIG_new void
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.Ft void
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.Fn X509_SIG_free "X509_SIG *sig"
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.Sh DESCRIPTION
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.Fn X509_SIG_new
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allocates and initializes an empty
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.Vt X509_SIG
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object, representing an ASN.1
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.Vt DigestInfo
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structure defined in RFC 2315 section 9.4
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and equivalently in RFC 8017 section 9.2.
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It can hold a message digest together with information about
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the algorithm used.
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.Pp
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.Fn X509_SIG_free
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frees
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.Fa sig .
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.Sh RETURN VALUES
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.Fn X509_SIG_new
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returns the new
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.Vt X509_SIG
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object or
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.Dv NULL
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if an error occurs.
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.Sh SEE ALSO
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.Xr d2i_X509_SIG 3 ,
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.Xr PEM_read_PKCS8 3 ,
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.Xr RSA_sign 3 ,
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.Xr X509_new 3 ,
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.Xr X509_SIG_get0 3
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.Sh STANDARDS
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RFC 2315: PKCS #7: Cryptographic Message Syntax,
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section 9: Signed-data content type
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.Pp
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RFC 8017: PKCS #1: RSA Cryptography Specifications,
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section 9: Encoding Methods for Signatures
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.Sh HISTORY
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.Fn X509_SIG_new
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and
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.Fn X509_SIG_free
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appeared in SSLeay 0.4 or earlier and have been available since
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.Ox 2.4 .
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