Research about Cryptography and Java Implementation

Knowledge Sharing:
1. Cryptography is the practice and study of techniques for secure communication in the presence of third parties (called adversaries).
2. In cryptography, a key derivation function (or KDF) derives one or more secret keys from a secret value such as a master key, a password, or a passphrase using a pseudo-random function.
3. In cryptography, a key is a piece of information (a parameter) that determines the functional output of a cryptographic algorithm or cipher.
4. In cryptography, a cipher (or cypher) is an algorithm for performing encryption or decryption—a series of well-defined steps that can be followed as a procedure.
5. In encryption, a key specifies the particular transformation of plaintext into ciphertext, or vice versa during decryption.

Classes:
MessageDigest


From Maths to Computer Science:
Binary [0, 1]
bit, byte
Character, char, unicode,

1 byte = 8 bits

References:
https://docs.oracle.com/javase/7/docs/technotes/guides/security/StandardNames.html
https://en.wikipedia.org/wiki/Bcrypt