openssl-verify - certificate verification command

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       Licensed under the Apache License 2.0 (the "License").  You may not use this file  except  in  compliance
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       <https://www.openssl.org/source/license.html>.

3.4.1                                              2025-04-03                               OPENSSL-VERIFY(1SSL)

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

       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 <openssl/x509_vfy.h>.

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

       The -show_chain option was added in OpenSSL 1.1.0.

       The -engineoption was deprecated in OpenSSL 3.0.

       openssl-verify - certificate verification command

-help
           Print out a usage message.

       -CRLfilefilename|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.

       -trustedfilename|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.

       -untrustedfilename|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.

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

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

       -engineid
           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.

       -CAfilefile, -no-CAfile, -CApathdir, -no-CApath, -CAstoreuri, -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.

       -providername-provider-pathpath-propquerypropq
           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.

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

opensslverify [-help] [-CRLfilefilename|uri] [-crl_download] [-show_chain] [-verbose] [-trustedfilename|uri] [-untrustedfilename|uri] [-vfyoptnm:v] [-nameoptoption] [-CAfilefile] [-no-CAfile]
       [-CApathdir] [-no-CApath] [-CAstoreuri] [-no-CAstore] [-engineid] [-allow_proxy_certs] [-attimetimestamp] [-no_check_time] [-check_ss_sig] [-crl_check] [-crl_check_all] [-explicit_policy]
       [-extended_crl] [-ignore_critical] [-inhibit_any] [-inhibit_map] [-partial_chain] [-policyarg]
       [-policy_check] [-policy_print] [-purposepurpose] [-suiteB_128] [-suiteB_128_only] [-suiteB_192]
       [-trusted_first] [-no_alt_chains] [-use_deltas] [-auth_levelnum] [-verify_depthnum] [-verify_emailemail] [-verify_hostnamehostname] [-verify_ipip] [-verify_namename] [-x509_strict] [-issuer_checks]
       [-providername] [-provider-pathpath] [-propquerypropq] [--] [certificate ...]