PGP Encryption and Decryption

Apache Camel has a simple tool to aid in the encryption/decryption of files using PGP.

In order to set this up, you will need to do some legwork beforehand.

Install the crypto library in your POM
1. <dependency> <groupId>org.apache.camel</groupId> <artifactId>camel-crypto</artifactId> </dependency>
Generate a PGP keypair. This can be accomplished in many ways, but a standard way of handling it is using GPG on your unix box (or WSL).
1. Be sure to note the username and passphrase you selected
2. Be sure to follow encryption algorithm guidelines if they are provided by the client
Receive a public key from the client
Populate your secret key and the client’s public key into “resources”
1. this must be done locally as Platform Manager insists that resources be in json format, but these keys are asc

Here is an example route

<routes xmlns="http://camel.apache.org/schema/spring">
    <route xmlns="http://camel.apache.org/schema/spring" id="testDecryption">
        <from uri="file:{{testDecryption.directory}}?include={{testDecryption.filePattern}}&amp;{{file-parameters}}"/>

        <log message="Received encrypted file - ${header[CamelFileNameOnly]}" />
        <log message="Encrypted Body ${body}" />
        
        <unmarshal><pgp keyFileName="{{testDecryption.secretKey}}" keyUserid="{{testDecryption.email}}" password="{{pfx:secret_key_password}}"/></unmarshal>
        <log message="Decrypted Body ${body}" />
        
        <marshal><pgp keyFileName="{{testEncryption.publicKey}}" keyUserid="{{testEncryption.email}}"/></marshal>
        <log message="Re-encrypted body ${body}"/>
        
        <to uri="file:{{testEncryption.directory}}?fileName=output.pgp" />
    </route>

</routes>