Cloudera Docs

Encrypt-Config Tool

The encrypt-config command line tool can be used to encrypt NiFi Registry configuration by invoking the tool with the following command:

./bin/encrypt-config --nifiRegistry [options]

You can use the following command line options with the encrypt-config tool:

  • -h,--help Show usage information (this message)

  • -v,--verbose Enables verbose mode (off by default)

  • -p,--password <password> Protect the files using a password-derived key. If an argument is not provided to this flag, interactive mode will be triggered to prompt the user to enter the password.

  • -k,--key <keyhex> Protect the files using a raw hexadecimal key. If an argument is not provided to this flag, interactive mode will be triggered to prompt the user to enter the key.

  • --oldPassword <password> If the input files are already protected using a password-derived key, this specifies the old password so that the files can be unprotected before re-protecting.

  • --oldKey <keyhex> If the input files are already protected using a key, this specifies the raw hexadecimal key so that the files can be unprotected before re-protecting.

  • -b,--bootstrapConf <file> The bootstrap.conf file containing no master key or an existing master key. If a new password/key is specified and no output bootstrap.conf file is specified, then this file will be overwritten to persist the new master key.

  • -B,--outputBootstrapConf <file> The destination bootstrap.conf file to persist master key. If specified, the input bootstrap.conf will not be modified.

  • -r,--nifiRegistryProperties <file> The nifi-registry.properties file containing unprotected config values, overwritten if no output file specified.

  • -R,--outputNifiRegistryProperties <file> The destination nifi-registry.properties file containing protected config values.

  • -a,--authorizersXml <file> The authorizers.xml file containing unprotected config values, overwritten if no output file specified.

  • -A,--outputAuthorizersXml <file> The destination authorizers.xml file containing protected config values.

  • -i,--identityProvidersXml <file> The identity-providers.xml file containing unprotected config values, overwritten if no output file specified.

  • -I,--outputIdentityProvidersXml <file> The destination identity-providers.xml file containing protected config values.

As an example of how the tool works, assume that you have installed the tool on a machine supporting 256-bit encryption and with the following existing values in the nifi-registry.properties file:

# security properties #
nifi.registry.security.keystore=/path/to/keystore.jks
nifi.registry.security.keystoreType=JKS
nifi.registry.security.keystorePasswd=thisIsABadKeystorePassword
nifi.registry.security.keyPasswd=thisIsABadKeyPassword
nifi.registry.security.truststore=
nifi.registry.security.truststoreType=
nifi.registry.security.truststorePasswd=

Enter the following arguments when using the tool:

./bin/encrypt-config.sh nifi-registry \
-b bootstrap.conf \
-k 0123456789ABCDEFFEDCBA98765432100123456789ABCDEFFEDCBA9876543210 \
-r nifi-registry.properties

As a result, the nifi-registry.properties file is overwritten with protected properties and sibling encryption identifiers (aes/gcm/256, the currently supported algorithm):

# security properties #
nifi.registry.security.keystore=/path/to/keystore.jks
nifi.registry.security.keystoreType=JKS
nifi.registry.security.keystorePasswd=oBjT92hIGRElIGOh||MZ6uYuWNBrOA6usq/Jt3DaD2e4otNirZDytac/w/KFe0HOkrJR03vcbo
nifi.registry.security.keystorePasswd.protected=aes/gcm/256
nifi.registry.security.keyPasswd=ac/BaE35SL/esLiJ||+ULRvRLYdIDA2VqpE0eQXDEMjaLBMG2kbKOdOwBk/hGebDKlVg==
nifi.registry.security.keyPasswd.protected=aes/gcm/256
nifi.registry.security.truststore=
nifi.registry.security.truststoreType=
nifi.registry.security.truststorePasswd=

When applied to identity-providers.xml or authorizers.xml, the property elements are updated with an encryption attribute. For example:

<!-- LDAP Provider -->
<provider>
   <identifier>ldap-provider</identifier>
   <class>org.apache.nifi.registry.security.ldap.LdapProvider</class>
   <property name="Authentication Strategy">START_TLS</property>
   <property name="Manager DN">someuser</property>
   <property name="Manager Password" encryption="aes/gcm/128">q4r7WIgN0MaxdAKM||SGgdCTPGSFEcuH4RraMYEdeyVbOx93abdWTVSWvh1w+klA</property>
   <property name="TLS - Keystore">/path/to/keystore.jks</property>
   <property name="TLS - Keystore Password" encryption="aes/gcm/128">Uah59TWX+Ru5GY5p||B44RT/LJtC08QWA5ehQf01JxIpf0qSJUzug25UwkF5a50g</property>
   <property name="TLS - Keystore Type">JKS</property>
   ...
</provider>

Additionally, the bootstrap.conf file is updated with the encryption key as follows:

# Master key in hexadecimal format for encrypted sensitive configuration values
nifi.registry.bootstrap.sensitive.key=0123456789ABCDEFFEDCBA98765432100123456789ABCDEFFEDCBA9876543210

Sensitive configuration values are encrypted by the tool by default, however you can encrypt any additional properties, if desired. To encrypt additional properties, specify them as comma-separated values in the nifi.registry.sensitive.props.additional.keys property.

If the nifi-registry.properties file already has valid protected values and you wish to protect additional values using the same master key already present in your bootstrap.conf, then run the tool without specifying a new key:

# bootstrap.conf already contains master key property
# nifi-registy.properties has been updated for nifi.registry.sensitive.props.additional.keys=...

./bin/encrypt-config.sh --nifiRegistry -b bootstrap.conf -r nifi-registry.properties