java.security.InvalidKeyException: Illegal key size or default parameters in android

Question

I got the following error and I got a little stuck: Exception in thread \"main\"

java.security.InvalidKeyException: Illegal key size or default parameters
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Answer 1

private String cryptKey = "qkjll5@2md3gs5Q@FDFqf";

By default Java supports only 128-bit encryption

128bits == 16Bytes == 16 Chars.

So cryptKey cannot exceed 16 characters.

If you want to exceed more than 16 character you have to install Java Cryptography Extension (JCE) Unlimited Strength.

Why 128bits?