Manual: openssl-verify

OPENSSL-VERIFY(1SSL)					   OpenSSL					OPENSSL-VERIFY(1SSL)

NAME
       openssl-verify - certificate verification command

SYNOPSIS
       openssl verify [-help] [-CRLfile filename|uri] [-crl_download] [-show_chain] [-verbose] [-trusted filename|uri]
       [-untrusted filename|uri] [-vfyopt nm:v] [-nameopt option] [-CAfile file] [-no-CAfile] [-CApath dir] [-no-CApath]
       [-CAstore uri] [-no-CAstore] [-engine id] [-allow_proxy_certs] [-attime timestamp] [-no_check_time] [-check_ss_sig]
       [-crl_check] [-crl_check_all] [-explicit_policy] [-extended_crl] [-ignore_critical] [-inhibit_any] [-inhibit_map]
       [-partial_chain] [-policy arg] [-policy_check] [-policy_print] [-purpose purpose] [-suiteB_128] [-suiteB_128_only]
       [-suiteB_192] [-trusted_first] [-no_alt_chains] [-use_deltas] [-auth_level num] [-verify_depth num] [-verify_email
       email] [-verify_hostname hostname] [-verify_ip ip] [-verify_name name] [-x509_strict] [-issuer_checks] [-provider
       name] [-provider-path path] [-provparam [name:]key=value] [-propquery propq] [--] [certificate ...]

DESCRIPTION
       This command verifies certificate chains. If a certificate chain has multiple problems, this program attempts to
       display all of them.

OPTIONS
       -help
	   Print out a usage message.

       -CRLfile filename|uri
	   The	file  or  URI  should contain one or more CRLs in PEM or DER format.  This option can be specified more than
	   once to include CRLs from multiple sources.

       -crl_download
	   Attempt to download CRL information for certificates via their CDP entries.

       -show_chain
	   Display information about the certificate chain that has been built (if successful). Certificates  in  the  chain
	   that came from the untrusted list will be flagged as "untrusted".

       -verbose
	   Print extra information about the operations being performed.

       -trusted filename|uri
	   A  file  or URI of (more or less) trusted certificates.  See openssl-verification-options(1) for more information
	   on trust settings.

	   This option can be specified more than once to load certificates from multiple sources.

       -untrusted filename|uri
	   A file or URI of untrusted certificates to use for chain building.  This option can be specified more  than	once
	   to load certificates from multiple sources.

       -vfyopt nm:v
	   Pass	 options  to  the  signature  algorithm	 during	 verify	 operations.   Names and values of these options are
	   algorithm-specific.

       -nameopt option
	   This specifies how the subject or issuer names are displayed.  See openssl-namedisplay-options(1) for details.

       -engine id
	   See "Engine Options" in openssl(1).	This option is deprecated.

	   To load certificates or CRLs that require engine support, specify the -engine option before any of the  -trusted,
	   -untrusted or -CRLfile options.

       -CAfile file, -no-CAfile, -CApath dir, -no-CApath, -CAstore uri, -no-CAstore
	   See "Trusted Certificate Options" in openssl-verification-options(1) for details.

       -allow_proxy_certs, -attime, -no_check_time, -check_ss_sig, -crl_check, -crl_check_all, -explicit_policy,
       -extended_crl, -ignore_critical, -inhibit_any, -inhibit_map, -no_alt_chains, -partial_chain, -policy, -policy_check,
       -policy_print, -purpose, -suiteB_128, -suiteB_128_only, -suiteB_192, -trusted_first, -use_deltas, -auth_level,
       -verify_depth, -verify_email, -verify_hostname, -verify_ip, -verify_name, -x509_strict -issuer_checks
	   Set	  various    options	of    certificate    chain    verification.	See    "Verification   Options"	  in
	   openssl-verification-options(1) for details.

       -provider name
       -provider-path path
       -provparam [name:]key=value
       -propquery propq
	   See "Provider Options" in openssl(1), provider(7), and property(7).

       --  Indicates the last option. All arguments following this are assumed to be certificate files. This  is  useful  if
	   the first certificate filename begins with a -.

       certificate ...
	   One	or more target certificates to verify, one per file. If no certificates are given, this command will attempt
	   to read a single certificate from standard input.

DIAGNOSTICS
       When a verify operation fails the output messages can be somewhat cryptic. The general form of the error message is:

	server.pem: /C=AU/ST=Queensland/O=CryptSoft Pty Ltd/CN=Test CA (1024 bit)
	error 24 at 1 depth lookup:invalid CA certificate

       The first line contains the name of the certificate being verified followed by the subject name of  the	certificate.
       The second line contains the error number and the depth. The depth is number of the certificate being verified when a
       problem	was detected starting with zero for the target ("leaf") certificate itself then 1 for the CA that signed the
       target certificate and so on.  Finally a textual version of the error number is presented.

       A list of the error codes and messages can be found in X509_STORE_CTX_get_error(3); the full list is defined  in	 the
       header file .

       This command ignores many errors, in order to allow all the problems with a certificate chain to be determined.

SEE ALSO
       openssl-verification-options(1), openssl-x509(1), ossl_store-file(7)

HISTORY
       The -show_chain option was added in OpenSSL 1.1.0.

       The -engine option was deprecated in OpenSSL 3.0.

COPYRIGHT
       Copyright 2000-2021 The OpenSSL Project Authors. All Rights Reserved.

       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
       .

3.5.5							 2026-01-27					OPENSSL-VERIFY(1SSL)