Error Loading extension section usr_cert

偏执的太偏执、 2022-08-02 14:50 616阅读 0赞

在用easy\_rsa生成ovpn配置时，出现如下错误：

[ root: /usr/share/easy-rsa] #/usr/share/easy-rsa/build-key --batch zzzz.29761
    Using Common Name: zzzz.29761
    Generating a 2048 bit RSA private key
    ...............+++
    .................................................................+++
    writing new private key to 'zzzz.29761.key'
    -----
    Using configuration from /usr/share/easy-rsa/openssl-1.0.0.cnf
    Error Loading extension section usr_cert
    140516636624544:error:0E06D06C:configuration file routines:NCONF_get_string:no value:conf_lib.c:335:group=CA_default name=email_in_dn
    140516636624544:error:2207507C:X509 V3 routines:v2i_GENERAL_NAME_ex:missing value:v3_alt.c:537:
    140516636624544:error:22098080:X509 V3 routines:X509V3_EXT_nconf:error in extension:v3_conf.c:93:name=subjectAltName, value=zzzz.29761

查看openvpn的版本信息：

# openvpn --version
    OpenVPN 2.3.2 x86_64-pc-linux-gnu [SSL (OpenSSL)] [LZO] [EPOLL] [PKCS11] [eurephia] [MH] [IPv6] built on Dec  1 2014
    Originally developed by James Yonan
    Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>

原因：  
在配置文件openssl-1.0.0.cnf中，\[usr\_cert\]节中多了参数： subjectAltName=email:copy，注释掉就OK了。

openssl-1.0.0.cnf内容：

[root@control 2.0]# cat openssl-1.0.0.cnf
    # For use with easy-rsa version 2.0 and OpenSSL 1.0.0*
    
    # This definition stops the following lines choking if HOME isn't
    # defined.
    HOME                    = .
    RANDFILE                = $ENV::HOME/.rnd
    openssl_conf            = openssl_init
    
    [ openssl_init ]
    # Extra OBJECT IDENTIFIER info:
    #oid_file = $ENV::HOME/.oid
    oid_section             = new_oids
    engines                 = engine_section
    
    # To use this configuration file with the "-extfile" option of the
    # "openssl x509" utility, name here the section containing the
    # X.509v3 extensions to use:
    # extensions =
    # (Alternatively, use a configuration file that has only
    # X.509v3 extensions in its main [= default] section.)
    
    [ new_oids ]
    
    # We can add new OIDs in here for use by 'ca' and 'req'.
    # Add a simple OID like this:
    # testoid1=1.2.3.4
    # Or use config file substitution like this:
    # testoid2=${testoid1}.5.6
    
    ####################################################################
    [ ca ]
    default_ca      = CA_default            # The default ca section
    
    ####################################################################
    [ CA_default ]
    
    dir             = $ENV::KEY_DIR         # Where everything is kept
    certs           = $dir                  # Where the issued certs are kept
    crl_dir         = $dir                  # Where the issued crl are kept
    database        = $dir/index.txt        # database index file.
    new_certs_dir   = $dir                  # default place for new certs.
    
    certificate     = $dir/ca.crt           # The CA certificate
    serial          = $dir/serial           # The current serial number
    crl             = $dir/crl.pem          # The current CRL
    private_key     = $dir/ca.key           # The private key
    RANDFILE        = $dir/.rand            # private random number file
    
    x509_extensions = usr_cert              # The extentions to add to the cert
    
    # Extensions to add to a CRL. Note: Netscape communicator chokes on V2 CRLs
    # so this is commented out by default to leave a V1 CRL.
    # crl_extensions = crl_ext
    
    default_days    = 3650                  # how long to certify for
    default_crl_days= 30                    # how long before next CRL
    default_md      = sha256                # use public key default MD
    preserve        = no                    # keep passed DN ordering
    
    # A few difference way of specifying how similar the request should look
    # For type CA, the listed attributes must be the same, and the optional
    # and supplied fields are just that :-)
    policy          = policy_anything
    
    # For the CA policy
    [ policy_match ]
    countryName             = match
    stateOrProvinceName     = match
    organizationName        = match
    organizationalUnitName  = optional
    commonName              = supplied
    name                    = optional
    emailAddress            = optional
    
    # For the 'anything' policy
    # At this point in time, you must list all acceptable 'object'
    # types.
    [ policy_anything ]
    countryName             = optional
    stateOrProvinceName     = optional
    localityName            = optional
    organizationName        = optional
    organizationalUnitName  = optional
    commonName              = supplied
    name                    = optional
    emailAddress            = optional
    
    ####################################################################
    [ req ]
    default_bits            = $ENV::KEY_SIZE
    default_keyfile         = privkey.pem
    default_md              = sha256
    distinguished_name      = req_distinguished_name
    attributes              = req_attributes
    x509_extensions = v3_ca # The extentions to add to the self signed cert
    
    # Passwords for private keys if not present they will be prompted for
    # input_password = secret
    # output_password = secret
    
    # This sets a mask for permitted string types. There are several options.
    # default: PrintableString, T61String, BMPString.
    # pkix : PrintableString, BMPString (PKIX recommendation after 2004).
    # utf8only: only UTF8Strings (PKIX recommendation after 2004).
    # nombstr : PrintableString, T61String (no BMPStrings or UTF8Strings).
    # MASK:XXXX a literal mask value.
    string_mask = nombstr
    
    # req_extensions = v3_req # The extensions to add to a certificate request
    
    [ req_distinguished_name ]
    countryName                     = Country Name (2 letter code)
    countryName_default             = $ENV::KEY_COUNTRY
    countryName_min                 = 2
    countryName_max                 = 2
    
    stateOrProvinceName             = State or Province Name (full name)
    stateOrProvinceName_default     = $ENV::KEY_PROVINCE
    
    localityName                    = Locality Name (eg, city)
    localityName_default            = $ENV::KEY_CITY
    
    0.organizationName              = Organization Name (eg, company)
    0.organizationName_default      = $ENV::KEY_ORG
    
    # we can do this but it is not needed normally :-)
    #1.organizationName = Second Organization Name (eg, company)
    #1.organizationName_default = World Wide Web Pty Ltd
    
    organizationalUnitName          = Organizational Unit Name (eg, section)
    #organizationalUnitName_default =
    
    commonName                      = Common Name (eg, your name or your server\'s hostname)
    commonName_max                  = 64
    
    name                            = Name
    name_max                        = 64
    
    emailAddress                    = Email Address
    emailAddress_default            = $ENV::KEY_EMAIL
    emailAddress_max                = 40
    
    # JY -- added for batch mode
    organizationalUnitName_default = $ENV::KEY_OU
    commonName_default = $ENV::KEY_CN
    name_default = $ENV::KEY_NAME
    
    
    # SET-ex3 = SET extension number 3
    
    [ req_attributes ]
    challengePassword               = A challenge password
    challengePassword_min           = 4
    challengePassword_max           = 20
    
    unstructuredName                = An optional company name
    
    [ usr_cert ]
    
    # These extensions are added when 'ca' signs a request.
    
    # This goes against PKIX guidelines but some CAs do it and some software
    # requires this to avoid interpreting an end user certificate as a CA.
    
    basicConstraints=CA:FALSE
    
    # Here are some examples of the usage of nsCertType. If it is omitted
    # the certificate can be used for anything *except* object signing.
    
    # This is OK for an SSL server.
    # nsCertType = server
    
    # For an object signing certificate this would be used.
    # nsCertType = objsign
    
    # For normal client use this is typical
    # nsCertType = client, email
    
    # and for everything including object signing:
    # nsCertType = client, email, objsign
    
    # This is typical in keyUsage for a client certificate.
    # keyUsage = nonRepudiation, digitalSignature, keyEncipherment
    
    # This will be displayed in Netscape's comment listbox.
    nsComment                       = "Easy-RSA Generated Certificate"
    
    # PKIX recommendations harmless if included in all certificates.
    subjectKeyIdentifier=hash
    authorityKeyIdentifier=keyid,issuer:always
    extendedKeyUsage=clientAuth
    keyUsage = digitalSignature
    
    
    # This stuff is for subjectAltName and issuerAltname.
    # Import the email address.
    # subjectAltName=email:copy
    
    # Copy subject details
    # issuerAltName=issuer:copy
    
    #nsCaRevocationUrl = http://www.domain.dom/ca-crl.pem
    #nsBaseUrl
    #nsRevocationUrl
    #nsRenewalUrl
    #nsCaPolicyUrl
    #nsSslServerName
    
    [ server ]
    
    # JY ADDED -- Make a cert with nsCertType set to "server"
    basicConstraints=CA:FALSE
    nsCertType                     = server
    nsComment                      = "Easy-RSA Generated Server Certificate"
    subjectKeyIdentifier=hash
    authorityKeyIdentifier=keyid,issuer:always
    extendedKeyUsage=serverAuth
    keyUsage = digitalSignature, keyEncipherment
    
    [ v3_req ]
    
    # Extensions to add to a certificate request
    
    basicConstraints = CA:FALSE
    keyUsage = nonRepudiation, digitalSignature, keyEncipherment
    
    [ v3_ca ]
    
    
    # Extensions for a typical CA
    
    
    # PKIX recommendation.
    
    subjectKeyIdentifier=hash
    
    authorityKeyIdentifier=keyid:always,issuer:always
    
    # This is what PKIX recommends but some broken software chokes on critical
    # extensions.
    #basicConstraints = critical,CA:true
    # So we do this instead.
    basicConstraints = CA:true
    
    # Key usage: this is typical for a CA certificate. However since it will
    # prevent it being used as an test self-signed certificate it is best
    # left out by default.
    # keyUsage = cRLSign, keyCertSign
    
    # Some might want this also
    # nsCertType = sslCA, emailCA
    
    # Include email address in subject alt name: another PKIX recommendation
    # subjectAltName=email:copy
    # Copy issuer details
    # issuerAltName=issuer:copy
    
    # DER hex encoding of an extension: beware experts only!
    # obj=DER:02:03
    # Where 'obj' is a standard or added object
    # You can even override a supported extension:
    # basicConstraints= critical, DER:30:03:01:01:FF
    
    [ crl_ext ]
    
    # CRL extensions.
    # Only issuerAltName and authorityKeyIdentifier make any sense in a CRL.
    
    # issuerAltName=issuer:copy
    authorityKeyIdentifier=keyid:always,issuer:always
    
    [ engine_section ]
    #
    # If you are using PKCS#11
    # Install engine_pkcs11 of opensc (www.opensc.org)
    # And uncomment the following
    # verify that dynamic_path points to the correct location
    #
    #pkcs11 = pkcs11_section
    
    [ pkcs11_section ]
    engine_id = pkcs11
    dynamic_path = /usr/lib/engines/engine_pkcs11.so
    MODULE_PATH = $ENV::PKCS11_MODULE_PATH
    PIN = $ENV::PKCS11_PIN
    init = 0

参考：  
1 Error Loading extension section usr\_cert：[http://stackoverflow.com/questions/24255205/error-loading-extension-section-usr-cert][http_stackoverflow.com_questions_24255205_error-loading-extension-section-usr-cert]  
2 openvpn配置文件详解：[http://www-2w.blog.163.com/blog/static/9793151820111010253869/][http_www-2w.blog.163.com_blog_static_9793151820111010253869]

[http_stackoverflow.com_questions_24255205_error-loading-extension-section-usr-cert]: http://stackoverflow.com/questions/24255205/error-loading-extension-section-usr-cert
[http_www-2w.blog.163.com_blog_static_9793151820111010253869]: http://www-2w.blog.163.com/blog/static/9793151820111010253869/