Adding upstream version 4.22.0.upstream/4.22.0

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 163 insertions, 0 deletions

diff --git a/upstream/debian-unstable/man3/EVP_SignInit.3ssl b/upstream/debian-unstable/man3/EVP_SignInit.3ssl
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+.\" -*- mode: troff; coding: utf-8 -*-
+.\" Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43)
+.\"
+.\" Standard preamble:
+.\" ========================================================================
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+.if t .sp .5v
+.if n .sp
+..
+.de Vb \" Begin verbatim text
+.ft CW
+.nf
+.ne \\$1
+..
+.de Ve \" End verbatim text
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+..
+.\" \*(C` and \*(C' are quotes in nroff, nothing in troff, for use with C<>.
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+.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
+..
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+.        de IX
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+..
+.        if !\nF==2 \{\
+.            nr % 0
+.            nr F 2
+.        \}
+.    \}
+.\}
+.rr rF
+.\" ========================================================================
+.\"
+.IX Title "EVP_SIGNINIT 3SSL"
+.TH EVP_SIGNINIT 3SSL 2024-02-03 3.1.5 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_SignInit, EVP_SignInit_ex, EVP_SignUpdate,
+EVP_SignFinal_ex, EVP_SignFinal
+\&\- EVP signing functions
+.SH SYNOPSIS
+.IX Header "SYNOPSIS"
+.Vb 1
+\& #include <openssl/evp.h>
+\&
+\& int EVP_SignInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl);
+\& int EVP_SignUpdate(EVP_MD_CTX *ctx, const void *d, unsigned int cnt);
+\& int EVP_SignFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *s,
+\&                      EVP_PKEY *pkey, OSSL_LIB_CTX *libctx, const char *propq);
+\& int EVP_SignFinal(EVP_MD_CTX *ctx, unsigned char *sig, unsigned int *s,
+\&                   EVP_PKEY *pkey);
+\&
+\& void EVP_SignInit(EVP_MD_CTX *ctx, const EVP_MD *type);
+.Ve
+.SH DESCRIPTION
+.IX Header "DESCRIPTION"
+The EVP signature routines are a high-level interface to digital
+signatures.
+.PP
+\&\fBEVP_SignInit_ex()\fR sets up signing context \fIctx\fR to use digest
+\&\fItype\fR from \fBENGINE\fR \fIimpl\fR. \fIctx\fR must be created with
+\&\fBEVP_MD_CTX_new()\fR before calling this function.
+.PP
+\&\fBEVP_SignUpdate()\fR hashes \fIcnt\fR bytes of data at \fId\fR into the
+signature context \fIctx\fR. This function can be called several times on the
+same \fIctx\fR to include additional data.
+.PP
+\&\fBEVP_SignFinal_ex()\fR signs the data in \fIctx\fR using the private key
+\&\fIpkey\fR and places the signature in \fIsig\fR. The library context \fIlibctx\fR and
+property query \fIpropq\fR are used when creating a context to use with the key
+\&\fIpkey\fR. \fIsig\fR must be at least \f(CWEVP_PKEY_get_size(pkey)\fR bytes in size.
+\&\fIs\fR is an OUT parameter, and not used as an IN parameter.
+The number of bytes of data written (i.e. the length of the signature)
+will be written to the integer at \fIs\fR, at most \f(CWEVP_PKEY_get_size(pkey)\fR
+bytes will be written.
+.PP
+\&\fBEVP_SignFinal()\fR is similar to \fBEVP_SignFinal_ex()\fR but uses default
+values of NULL for the library context \fIlibctx\fR and the property query \fIpropq\fR.
+.PP
+\&\fBEVP_SignInit()\fR initializes a signing context \fIctx\fR to use the default
+implementation of digest \fItype\fR.
+.SH "RETURN VALUES"
+.IX Header "RETURN VALUES"
+\&\fBEVP_SignInit_ex()\fR, \fBEVP_SignUpdate()\fR, \fBEVP_SignFinal_ex()\fR and
+\&\fBEVP_SignFinal()\fR return 1 for success and 0 for failure.
+.PP
+The error codes can be obtained by \fBERR_get_error\fR\|(3).
+.SH NOTES
+.IX Header "NOTES"
+The \fBEVP\fR interface to digital signatures should almost always be used in
+preference to the low-level interfaces. This is because the code then becomes
+transparent to the algorithm used and much more flexible.
+.PP
+When signing with some private key types the random number generator must
+be seeded. If the automatic seeding or reseeding of the OpenSSL CSPRNG fails
+due to external circumstances (see \fBRAND\fR\|(7)), the operation will fail.
+.PP
+The call to \fBEVP_SignFinal()\fR internally finalizes a copy of the digest context.
+This means that calls to \fBEVP_SignUpdate()\fR and \fBEVP_SignFinal()\fR can be called
+later to digest and sign additional data.
+.PP
+Since only a copy of the digest context is ever finalized the context must
+be cleaned up after use by calling \fBEVP_MD_CTX_free()\fR or a memory leak
+will occur.
+.SH BUGS
+.IX Header "BUGS"
+Older versions of this documentation wrongly stated that calls to
+\&\fBEVP_SignUpdate()\fR could not be made after calling \fBEVP_SignFinal()\fR.
+.PP
+Since the private key is passed in the call to \fBEVP_SignFinal()\fR any error
+relating to the private key (for example an unsuitable key and digest
+combination) will not be indicated until after potentially large amounts of
+data have been passed through \fBEVP_SignUpdate()\fR.
+.PP
+It is not possible to change the signing parameters using these function.
+.PP
+The previous two bugs are fixed in the newer EVP_DigestSign*() functions.
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+\&\fBEVP_PKEY_get_size\fR\|(3), \fBEVP_PKEY_get_bits\fR\|(3),
+\&\fBEVP_PKEY_get_security_bits\fR\|(3),
+\&\fBEVP_VerifyInit\fR\|(3),
+\&\fBEVP_DigestInit\fR\|(3),
+\&\fBevp\fR\|(7), \fBHMAC\fR\|(3), \fBMD2\fR\|(3),
+\&\fBMD5\fR\|(3), \fBMDC2\fR\|(3), \fBRIPEMD160\fR\|(3),
+\&\fBSHA1\fR\|(3), \fBopenssl\-dgst\fR\|(1)
+.SH HISTORY
+.IX Header "HISTORY"
+The function \fBEVP_SignFinal_ex()\fR was added in OpenSSL 3.0.
+.SH COPYRIGHT
+.IX Header "COPYRIGHT"
+Copyright 2000\-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>.