Certificates (From AAF)

DCAE service components will use common certifcates generated from AAF/test instance and made available during deployment of DCAE TLS init container.

DCAE has a generalized process of certificate distribution as documented here - https://docs.onap.org/projects/onap-dcaegen2/en/latest/sections/tls_enablement.html

The updated certificates are located in https://git.onap.org/dcaegen2/deployments/tree/tls-init-container/tls

Certificates (Manual configuration of self-signed certifcates)

Configuration of Certificates in test environment(For FTP over TLS):

DFC supports two protocols: FTPES and SFTP. For FTPES, it is mutual authentication with certificates. In our test environment, we use vsftpd to simulate xNF, and we generate self-signed keys & certificates on both vsftpd server and DFC.

1. Generate key/certificate with openssl for DFC:

openssl genrsa -out dfc.key 2048
openssl req -new -out dfc.csr -key dfc.key
openssl x509 -req -days 365 -in dfc.csr -signkey dfc.key -out dfc.crt

2. Generate key & certificate with openssl for vsftpd:

openssl genrsa -out ftp.key 2048
openssl req -new -out ftp.csr -key ftp.key
openssl x509 -req -days 365 -in ftp.csr -signkey ftp.key -out ftp.crt

3. Configure java keystore in DFC:

We have two keystore files, one for TrustManager, one for KeyManager.

For TrustManager:

  1. First, convert your certificate in a DER format :

openssl x509 -outform der -in ftp.crt -out ftp.der

  1. And after copy existing keystore and password from container:

kubectl cp <DFC pod>:/opt/app/datafile/etc/cert/trust.jks trust.jks
kubectl cp <DFC pod>:/opt/app/datafile/etc/cert/trust.pass trust.pass

  1. Import DER certificate in the keystore :

keytool -import -alias ftp -keystore trust.jks -file ftp.der

For KeyManager:

  1. Import dfc.crt and dfc.key to dfc.jks. This is a bit troublesome.

Convert x509 Cert and Key to a pkcs12 file

openssl pkcs12 -export -in dfc.crt -inkey dfc.key -out cert.p12 -name dfc

Note: Make sure you put a password on the p12 file - otherwise you’ll get a null reference exception when you try to import it.

  1. Create password files for cert.p12

    printf "[your password]" > p12.pass

4. Update existing KeyStore files

Copy the new trust.jks and cert.p12 and password files from local environment to the DFC container.

mkdir mycert
cp cert.p12 mycert/
cp p12.pass mycert/
cp trust.jks mycert/
cp trust.pass mycert/
kubectl cp mycert/ <DFC pod>:/opt/app/datafile/etc/cert/

5. Update configuration in consul

Change path in consul:

dmaap.ftpesConfig.keyCert": "/opt/app/datafile/etc/cert/mycert/cert.p12
dmaap.ftpesConfig.keyPasswordPath": "/opt/app/datafile/etc/cert/mycert/p12.pass
dmaap.ftpesConfig.trustedCa": "/opt/app/datafile/etc/cert/mycert/trust.jks
dmaap.ftpesConfig.trustedCaPasswordPath": "/opt/app/datafile/etc/cert/mycert/trust.pass

Consul’s address: http://<worker external IP>:<Consul External Port>

kubectl -n onap get svc | grep consul
../../../_images/consule-certificate-update.png

6. Configure vsftpd:

update /etc/vsftpd/vsftpd.conf:

rsa_cert_file=/etc/ssl/private/ftp.crt
rsa_private_key_file=/etc/ssl/private/ftp.key
ssl_enable=YES
allow_anon_ssl=NO
force_local_data_ssl=YES
force_local_logins_ssl=YES

ssl_tlsv1=YES
ssl_sslv2=YES
ssl_sslv3=YES

require_ssl_reuse=NO
ssl_ciphers=HIGH

require_cert=YES
ssl_request_cert=YES
ca_certs_file=/home/vsftpd/myuser/dfc.crt

7. Other conditions

This has been tested with vsftpd and dfc, with self-signed certificates. In real deployment, we should use ONAP-CA signed certificate for DFC, and vendor-CA signed certificate for xNF.