Available as of Camel 2.5
Jasypt is a simplified encryption library which makes encryption and decryption easy. Camel integrates with Jasypt to allow sensitive information in Properties files to be encrypted. By dropping
camel-jasypt on the classpath those encrypted values will automatically be decrypted on-the-fly by Camel. This ensures that human eyes can't easily spot sensitive information such as usernames and passwords.
Maven users will need to add the following dependency to their
pom.xml for this component:
The Jasypt component provides a little command line tooling to encrypt or decrypt values.
The console output the syntax and which options it provides:
For example to encrypt the value
tiger you run with the following parameters. In the apache camel kit, you cd into the lib folder and run the following java cmd, where <CAMEL_HOME> is where you have downloaded and extract the Camel distribution.
Which outputs the following result
This means the encrypted representation
qaEEacuW7BUti8LcMgyjKw== can be decrypted back to
tiger if you know the master password which was
If you run the tool again then the encrypted value will return a different result. But decrypting the value will always return the correct original value.
So you can test it by running the tooling using the following parameters:
Which outputs the following result:
The idea is then to use those encrypted values in your Properties files. Notice how the password value is encrypted and the value has the tokens surrounding
The tooling requires the following JARs in the classpath, which has been enlisted in the
MANIFEST.MF file of
optional/ as prefix. Hence why the java cmd above can pickup the needed JARs from the Apache Distribution in the
Jasypt 1.7 onwards is now fully standalone so no additional JARs is needed.
The options below are exclusive for the Jasypt component.
Specifies the master password to use for decrypting. This option is mandatory. See below for more details.
Name of an optional algorithm to use.
Protecting the master password
The master password used by Jasypt must be provided, so that it's capable of decrypting the values. However having this master password out in the open may not be an ideal solution. Therefore you could for example provide it as a JVM system property or as a OS environment setting. If you decide to do so then the
password option supports prefixes which dictates this.
sysenv: means to lookup the OS system environment with the given key.
sys: means to lookup a JVM system property.
For example you could provided the password before you start the application
Then start the application, such as running the start script.
When the application is up and running you can unset the environment
password option is then a matter of defining as follows:
Example with Java DSL
In Java DSL you need to configure Jasypt as a
JasyptPropertiesParser instance and set it on the Properties component as show below:
The properties file
myproperties.properties then contain the encrypted value, such as shown below. Notice how the password value is encrypted and the value has the tokens surrounding
Example with Spring XML
In Spring XML you need to configure the
JasyptPropertiesParser which is shown below. Then the Camel Properties component is told to use
jasypt as the properties parser, which means Jasypt has its chance to decrypt values looked up in the properties.
The Properties component can also be inlined inside the
<camelContext> tag which is shown below. Notice how we use the
propertiesParserRef attribute to refer to Jasypt.