Adding upstream version 4.22.0.upstream/4.22.0

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

1 files changed, 236 insertions, 0 deletions

diff --git a/upstream/debian-bookworm/man3/EVP_VerifyInit.3ssl b/upstream/debian-bookworm/man3/EVP_VerifyInit.3ssl
new file mode 100644
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+.rm #[ #] #H #V #F C
+.\" ========================================================================
+.\"
+.IX Title "EVP_VERIFYINIT 3SSL"
+.TH EVP_VERIFYINIT 3SSL "2023-10-23" "3.0.11" "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_VerifyInit_ex,
+EVP_VerifyInit, EVP_VerifyUpdate, EVP_VerifyFinal_ex, EVP_VerifyFinal
+\&\- EVP signature verification functions
+.SH "SYNOPSIS"
+.IX Header "SYNOPSIS"
+.Vb 1
+\& #include <openssl/evp.h>
+\&
+\& int EVP_VerifyInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl);
+\& int EVP_VerifyUpdate(EVP_MD_CTX *ctx, const void *d, unsigned int cnt);
+\& int EVP_VerifyFinal_ex(EVP_MD_CTX *ctx, const unsigned char *sigbuf,
+\&                        unsigned int siglen, EVP_PKEY *pkey,
+\&                        OSSL_LIB_CTX *libctx, const char *propq);
+\& int EVP_VerifyFinal(EVP_MD_CTX *ctx, unsigned char *sigbuf, unsigned int siglen,
+\&                     EVP_PKEY *pkey);
+\&
+\& int EVP_VerifyInit(EVP_MD_CTX *ctx, const EVP_MD *type);
+.Ve
+.SH "DESCRIPTION"
+.IX Header "DESCRIPTION"
+The \s-1EVP\s0 signature verification routines are a high-level interface to digital
+signatures.
+.PP
+\&\fBEVP_VerifyInit_ex()\fR sets up verification context \fIctx\fR to use digest
+\&\fItype\fR from \s-1ENGINE\s0 \fIimpl\fR. \fIctx\fR must be created by calling
+\&\fBEVP_MD_CTX_new()\fR before calling this function.
+.PP
+\&\fBEVP_VerifyUpdate()\fR hashes \fIcnt\fR bytes of data at \fId\fR into the
+verification context \fIctx\fR. This function can be called several times on the
+same \fIctx\fR to include additional data.
+.PP
+\&\fBEVP_VerifyFinal_ex()\fR verifies the data in \fIctx\fR using the public key
+\&\fIpkey\fR and \fIsiglen\fR bytes in \fIsigbuf\fR.
+The library context \fIlibctx\fR and property query \fIpropq\fR are used when creating
+a context to use with the key \fIpkey\fR.
+.PP
+\&\fBEVP_VerifyFinal()\fR is similar to \fBEVP_VerifyFinal_ex()\fR but uses default
+values of \s-1NULL\s0 for the library context \fIlibctx\fR and the property query \fIpropq\fR.
+.PP
+\&\fBEVP_VerifyInit()\fR initializes verification context \fIctx\fR to use the default
+implementation of digest \fItype\fR.
+.SH "RETURN VALUES"
+.IX Header "RETURN VALUES"
+\&\fBEVP_VerifyInit_ex()\fR and \fBEVP_VerifyUpdate()\fR return 1 for success and 0 for
+failure.
+.PP
+\&\fBEVP_VerifyFinal_ex()\fR and \fBEVP_VerifyFinal()\fR return 1 for a correct
+signature, 0 for failure and a negative value if some other error occurred.
+.PP
+The error codes can be obtained by \fBERR_get_error\fR\|(3).
+.SH "NOTES"
+.IX Header "NOTES"
+The \fB\s-1EVP\s0\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
+The call to \fBEVP_VerifyFinal()\fR internally finalizes a copy of the digest context.
+This means that calls to \fBEVP_VerifyUpdate()\fR and \fBEVP_VerifyFinal()\fR can be called
+later to digest and verify 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_VerifyUpdate()\fR could not be made after calling \fBEVP_VerifyFinal()\fR.
+.PP
+Since the public 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_DigestVerify*() function.
+.SH "SEE ALSO"
+.IX Header "SEE ALSO"
+\&\fBevp\fR\|(7),
+\&\fBEVP_SignInit\fR\|(3),
+\&\fBEVP_DigestInit\fR\|(3),
+\&\fBevp\fR\|(7), \s-1\fBHMAC\s0\fR\|(3), \s-1\fBMD2\s0\fR\|(3),
+\&\s-1\fBMD5\s0\fR\|(3), \s-1\fBMDC2\s0\fR\|(3), \s-1\fBRIPEMD160\s0\fR\|(3),
+\&\s-1\fBSHA1\s0\fR\|(3), \fBopenssl\-dgst\fR\|(1)
+.SH "HISTORY"
+.IX Header "HISTORY"
+The function \fBEVP_VerifyFinal_ex()\fR was added in OpenSSL 3.0.
+.SH "COPYRIGHT"
+.IX Header "COPYRIGHT"
+Copyright 2000\-2021 The OpenSSL Project Authors. All Rights Reserved.
+.PP
+Licensed under the Apache License 2.0 (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>.