How I set up my Mac for encrypting values using Spring on the command line

spring-cli-encryption-setup.sh

# Install the Spring Boot CLI via homebrew (https://brew.sh/)
brew update
brew tap pivotal/tap
brew install springboot

# Download the Java 8 JCE from here: http://www.oracle.com/technetwork/java/javase/downloads/jce8-download-2133166.html
# Extract the .zip file somewhere.  There should be three files:
#
# local_policy.jar
# README.txt
# US_export_policy.jar

# Put the new files in $JAVA_HOME/lib/security (assumes the JCE files were extracted to ~/Downloads):
sudo cp ~/Downloads/UnlimitedJCEPolicyJDK8/*.jar $JAVA_HOME/jre/lib/security

# Add the spring cloud CLI utils (instructions from here: https://cloud.spring.io/spring-cloud-cli/)
spring install org.springframework.cloud:spring-cloud-cli:1.2.3.RELEASE

# Test the encryption
spring encrypt my-test -key test-key
# returns fce9f55ae106d769e589d7b4198ee73779f5077d7fb780038259a831163ffc38

# Test the decryption
spring decrypt fce9f55ae106d769e589d7b4198ee73779f5077d7fb780038259a831163ffc38 -key test-key
# returns my-test

Almost worked as-is for me, but where the snippet says to
copy to $JAVA_HOME/jre/lib/security
it didn't work for me. I had to tweak it as so:
copy to $JAVA_HOME/Contents/Home/jre/lib/security

I was getting 'Unable to initialize due to invalid secret key'
after running 'spring encrypt my-test -key my_key'