Encrypt and decrypt (and also random generator)

Simple and fast pseudorandom number generator (PRNG) and cryptation method.

Key: Use any integer from 1 to 4294967295 (0xFFFFFFFF).
Windows CR+LF newlines Use Windows CR+LF newlines instead of Unix LF only.
HTML & ASCII optimization HTML whitespace collapsing, only 7 bits encrypted.
Decrypted text using Unicode characters:
Click buttons to encrypt/decrypt using the key.
Encrypted text using numbers (Unicode character codes):

Due to line lengths, a maximum of 1024 characters are allowed.

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Developed by Anders Danielsson