experiment with the tool - steganography online

Question:

Experiment with the tool – Steganography Online (http://stylesuxx.github.io/steganography/) to get a feel of how the steganographic tool works.

1. In steganalysis, which methods are used to detect steganography?
2. Briefly describe how cryptography is applied in ATM, SSL, digital signatures, hashes and drive encryption.

Note: No.of words will be 400 including references. The paper must be in APA format