OpenSSL -- TLS Client Certificate Request Configuration File

# TLS client certificate request
 
[ req ]
default_bits            = 8192                  # RSA key size
encrypt_key             = yes                   # Protect private key
default_md              = sha256                # MD to use
utf8                    = yes                   # Input is UTF-8
string_mask             = utf8only              # Emit UTF-8 strings
prompt                  = yes                   # Prompt for DN
distinguished_name      = client_dn             # DN template
req_extensions          = client_reqext         # Desired extensions
 
[ client_dn ]
countryName             = "1. Country Name (2 letters) (eg, US)       "
countryName_max         = 2
stateOrProvinceName     = "2. State or Province Name   (eg, region)   "
localityName            = "3. Locality Name            (eg, city)     "
organizationName        = "4. Organization Name        (eg, company)  "
organizationalUnitName  = "5. Organizational Unit Name (eg, section)  "
commonName              = "6. Common Name              (eg, full name)"
commonName_max          = 64
emailAddress            = "7. Email Address            (eg, name@fqdn)"
emailAddress_max        = 40
 
[ client_reqext ]
keyUsage                = critical,digitalSignature
extendedKeyUsage        = clientAuth
subjectKeyIdentifier    = hash
subjectAltName          = email:move