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Diffstat (limited to 'secure/lib/libcrypto/man/X509_cmp.3')
-rw-r--r-- | secure/lib/libcrypto/man/X509_cmp.3 | 209 |
1 files changed, 209 insertions, 0 deletions
diff --git a/secure/lib/libcrypto/man/X509_cmp.3 b/secure/lib/libcrypto/man/X509_cmp.3 new file mode 100644 index 000000000000..74c3882ea322 --- /dev/null +++ b/secure/lib/libcrypto/man/X509_cmp.3 @@ -0,0 +1,209 @@ +.\" 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" +X509_cmp, X509_NAME_cmp, X509_issuer_and_serial_cmp, X509_issuer_name_cmp, X509_subject_name_cmp, X509_CRL_cmp, X509_CRL_match \&\- compare X509 certificates and related values +.SH "SYNOPSIS" +.IX Header "SYNOPSIS" +.Vb 1 +\& #include <openssl/x509.h> +\& +\& int X509_cmp(const X509 *a, const X509 *b); +\& int X509_NAME_cmp(const X509_NAME *a, const X509_NAME *b); +\& int X509_issuer_and_serial_cmp(const X509 *a, const X509 *b); +\& int X509_issuer_name_cmp(const X509 *a, const X509 *b); +\& int X509_subject_name_cmp(const X509 *a, const X509 *b); +\& int X509_CRL_cmp(const X509_CRL *a, const X509_CRL *b); +\& int X509_CRL_match(const X509_CRL *a, const X509_CRL *b); +.Ve +.SH "DESCRIPTION" +.IX Header "DESCRIPTION" +This set of functions are used to compare X509 objects, including X509 +certificates, X509 \s-1CRL\s0 objects and various values in an X509 certificate. +.PP +The \fBX509_cmp()\fR function compares two \fBX509\fR objects indicated by parameters +\&\fBa\fR and \fBb\fR. The comparison is based on the \fBmemcmp\fR result of the hash +values of two \fBX509\fR objects and the canonical (\s-1DER\s0) encoding values. +.PP +The \fBX509_NAME_cmp()\fR function compares two \fBX509_NAME\fR objects indicated by +parameters \fBa\fR and \fBb\fR. The comparison is based on the \fBmemcmp\fR result of +the canonical (\s-1DER\s0) encoding values of the two objects. \fBi2d_X509_NAME\fR\|(3) +has a more detailed description of the \s-1DER\s0 encoding of the \fBX509_NAME\fR structure. +.PP +The \fBX509_issuer_and_serial_cmp()\fR function compares the serial number and issuer +values in the given \fBX509\fR objects \fBa\fR and \fBb\fR. +.PP +The \fBX509_issuer_name_cmp()\fR, \fBX509_subject_name_cmp()\fR and \fBX509_CRL_cmp()\fR functions +are effectively wrappers of the \fBX509_NAME_cmp()\fR function. These functions compare +issuer names and subject names of the objects, or issuers of \fBX509_CRL\fR +objects, respectively. +.IX Xref "509" +.PP +The \fBX509_CRL_match()\fR function compares two \fBX509_CRL\fR objects. Unlike the +\&\fBX509_CRL_cmp()\fR function, this function compares the whole \s-1CRL\s0 content instead +of just the issuer name. +.SH "RETURN VALUES" +.IX Header "RETURN VALUES" +Like common memory comparison functions, the \fBX509\fR comparison functions return +an integer less than, equal to, or greater than zero if object \fBa\fR is found to +be less than, to match, or be greater than object \fBb\fR, respectively. +.PP +\&\fBX509_NAME_cmp()\fR, \fBX509_issuer_and_serial_cmp()\fR, \fBX509_issuer_name_cmp()\fR, +\&\fBX509_subject_name_cmp()\fR and \fBX509_CRL_cmp()\fR may return \fB\-2\fR to indicate an error. +.SH "NOTES" +.IX Header "NOTES" +These functions in fact utilize the underlying \fBmemcmp\fR of the C library to do +the comparison job. Data to be compared varies from \s-1DER\s0 encoding data, hash +value or \fB\s-1ASN1_STRING\s0\fR. The sign of the comparison can be used to order the +objects but it does not have a special meaning in some cases. +.PP +\&\fBX509_NAME_cmp()\fR and wrappers utilize the value \fB\-2\fR to indicate errors in some +circumstances, which could cause confusion for the applications. +.SH "SEE ALSO" +.IX Header "SEE ALSO" +\&\fBi2d_X509_NAME\fR\|(3), \fBi2d_X509\fR\|(3) +.SH "COPYRIGHT" +.IX Header "COPYRIGHT" +Copyright 2019 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>. |