Throw errors on bad decoding of keys. Remove logging. Change "hash" to MAC. Changed a few variable names, cleaned up some spacing.
Throw errors on bad decoding of keys. Remove logging. Change "hash" to MAC.
Changed a few variable names, cleaned up some spacing.

shibenli/java-aes-crypto,scottyab/java-aes-crypto,bbreck3/java-aes-crypto,doridori/java-aes-crypto,tozny/java-aes-crypto,HappyYang/java-aes-crypto,orhanobut/java-aes-crypto,draekko/java-aes-crypto