Modernize sample keys and sample configs

I kept most of the certificate properties equal to the old
certs, since some people's test scripts might rely on them (and
it does not require any creativity from my part).

Changes:
 * Add script to generate fresh test/sample keys
   (but keep sample keys in git for simple testing)
 * Switch from 1024 to 4096 bits RSA CA
 * Switch from 1024 to 2048 bits client/server RSA keys
 * Switch from 1024 to 2048 bits Diffie-Hellman parameters
 * Generate EC client and server cert, but sign with RSA CA
   (lets us test EC <-> RSA interoperability)
 * Remove 3DES cipher from 'sample' config
 * Add 'remote-cert-tls server' to client config
 * Update config files to deprecate nsCertType in favour of the
   keyUsage and extendedKeyUsage extensions.
 * Make naming more consistent

Signed-off-by: Steffan Karger <steffan@karger.me>
Acked-by: Samuli Seppänen <samuli@openvpn.net>
Message-Id: <CAA1AbxKZr_E6Wk9GBbB3xpLyJzyBxSa1k21UDXnC90d8refUzw@mail.gmail.com>
URL: http://article.gmane.org/gmane.network.openvpn.devel/9226
Signed-off-by: Gert Doering <gert@greenie.muc.de>

1 files changed, 139 insertions, 0 deletions

diff --git a/sample/sample-keys/openssl.cnf b/sample/sample-keys/openssl.cnf
new file mode 100644
index 0000000..aabfd48
--- /dev/null
+++ b/sample/sample-keys/openssl.cnf
@@ -0,0 +1,139 @@
+# Heavily borrowed from EasyRSA 3, for use with OpenSSL 1.0.*
+
+####################################################################
+[ ca ]
+default_ca	= CA_default		# The default ca section
+
+####################################################################
+[ CA_default ]
+
+dir		= sample-ca		# 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	= basic_exts		# The extentions to add to the cert
+
+# This allows a V2 CRL. Ancient browsers don't like it, but anything Easy-RSA
+# is designed for will. In return, we get the Issuer attached to CRLs.
+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 'anything' policy, which defines allowed DN fields
+[ policy_anything ]
+countryName		= optional
+stateOrProvinceName	= optional
+localityName		= optional
+organizationName	= optional
+organizationalUnitName	= optional
+commonName		= supplied
+name			= optional
+emailAddress		= optional
+
+####################################################################
+# Easy-RSA request handling
+# We key off $DN_MODE to determine how to format the DN
+[ req ]
+default_bits		= 2048
+default_keyfile		= privkey.pem
+default_md		= sha256
+distinguished_name	= cn_only
+x509_extensions		= easyrsa_ca	# The extentions to add to the self signed cert
+
+# A placeholder to handle the $EXTRA_EXTS feature:
+#%EXTRA_EXTS%	# Do NOT remove or change this line as $EXTRA_EXTS support requires it
+
+####################################################################
+# Easy-RSA DN (Subject) handling
+
+# Easy-RSA DN for cn_only support:
+[ cn_only ]
+commonName		= Common Name (eg: your user, host, or server name)
+commonName_max		= 64
+commonName_default	= changeme
+
+# Easy-RSA DN for org support:
+[ org ]
+countryName			= Country Name (2 letter code)
+countryName_default		= KG
+countryName_min			= 2
+countryName_max			= 2
+
+stateOrProvinceName		= State or Province Name (full name)
+stateOrProvinceName_default	= NA
+
+localityName			= Locality Name (eg, city)
+localityName_default		= BISHKEK
+
+0.organizationName		= Organization Name (eg, company)
+0.organizationName_default	= OpenVPN-TEST
+
+organizationalUnitName		= Organizational Unit Name (eg, section)
+organizationalUnitName_default	=
+
+commonName			= Common Name (eg: your user, host, or server name)
+commonName_max			= 64
+commonName_default		=
+
+emailAddress			= Email Address
+emailAddress_default		= me@myhost.mydomain
+emailAddress_max		= 64
+
+####################################################################
+
+[ basic_exts ]
+basicConstraints	= CA:FALSE
+subjectKeyIdentifier	= hash
+authorityKeyIdentifier	= keyid,issuer:always
+
+# The Easy-RSA CA extensions
+[ easyrsa_ca ]
+
+# PKIX recommendations:
+
+subjectKeyIdentifier=hash
+authorityKeyIdentifier=keyid:always,issuer:always
+
+# This could be marked critical, but it's nice to support reading by any
+# broken clients who attempt to do so.
+basicConstraints = CA:true
+
+# Limit key usage to CA tasks. If you really want to use the generated pair as
+# a self-signed cert, comment this out.
+keyUsage = cRLSign, keyCertSign
+
+# CRL extensions.
+[ crl_ext ]
+
+# Only issuerAltName and authorityKeyIdentifier make any sense in a CRL.
+
+# issuerAltName=issuer:copy
+authorityKeyIdentifier=keyid:always,issuer:always
+
+
+# Server extensions.
+[ server ]
+
+basicConstraints       = CA:FALSE
+nsCertType             = server
+nsComment              = "OpenSSL Generated Server Certificate"
+subjectKeyIdentifier   = hash
+authorityKeyIdentifier = keyid,issuer:always
+extendedKeyUsage       = serverAuth
+keyUsage               = digitalSignature, keyEncipherment