Overview:

This is a sample utility to split/merge 3 AES-256 keys.

NOTE: This example is built using JDK7, ultimate strength JCE (JDK7) and Maven 3.x

Unlimited Strength Policy JDK7
JDK must have the unlimited strength policy for the JDK version

To Run:

mvn clean test

Run | Generate AES-256 Key | Split AES-256 Key | Merge AES-256 Keys

Generate an AES-256 Key

mvn clean package // generate executable JAR file
java -jar key-split-merge-util.jar generateKey
// or optionally with Maven (using the above defaults)
mvn exec:java

Run | Generate AES-256 Key | Split AES-256 Key | Merge AES-256 Keys

Split AES-256 Key from command line to create 3 keys

mvn clean package // generate executable JAR file
java -jar key-split-merge-util.jar splitKey <hex AES-256 key>
// or optionally with Maven (using the above defaults)
mvn exec:java

Run | Generate AES-256 Key | Split AES-256 Key | Merge AES-256 Keys

Merge 3 AES-256 Key from command line

mvn clean package // generate executable JAR file
java -jar key-split-merge-util.jar mergeKeys <hex AES-256 key1> <hex AES-256 key2> <hex AES-256 key3> 
// or optionally with Maven (using the above defaults)
mvn exec:java

Run | Generate AES-256 Key | Split AES-256 Key | Merge AES-256 Keys

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aes-256-key-split-merge-utility's Issues

Merging AES keys is not working

I tried to merge two keys
java -jar key-split-merge-util.jar mergeKeys 8e3c9efe64ec35fab42fe1a009701aee3fc47decd2c61ea3e29dfeaf8c4efc86 00fba8989f65a1a7234cde6b5f3340d689a81ce86c4a69d30009026dcc74a76e


Exception in thread "main" java.lang.IllegalArgumentException: com.google.common.io.BaseEncoding$DecodingException: Unrecognized character: e
        at com.google.common.io.BaseEncoding.decode(BaseEncoding.java:248)
        at com.wecanendcraving.encryption.MainApp.main(MainApp.java:47)
Caused by: com.google.common.io.BaseEncoding$DecodingException: Unrecognized character: e
        at com.google.common.io.BaseEncoding$Alphabet.decode(BaseEncoding.java:543)
        at com.google.common.io.BaseEncoding$StandardBaseEncoding$2.read(BaseEncoding.java:715)
        at com.google.common.io.BaseEncoding.decodeChecked(BaseEncoding.java:265)
        at com.google.common.io.BaseEncoding.decode(BaseEncoding.java:246)
        ... 1 more

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