Ruby

ARC4 PRNG (Pseudo Random Number Generator)

See more Encryption Examples

Uses the ARC4 stream encryption algorithm as a pseudo random number generator. Ruby

require 'chilkat'

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

crypt = Chilkat::CkCrypt2.new()

# Set the encryption algorithm to ARC4:	
crypt.put_CryptAlgorithm("arc4")

# We want the encrypted output to be a hex-encoded string.
crypt.put_EncodingMode("hex")

key = "000102030405060708090A0B0C0D0E0F"
data = "12345678"

# Key length is 128 bits in this example.
crypt.put_KeyLength(128)
crypt.SetEncodedKey(key,"hex")

# Generate 16 "random" 8-byte blocks, encoded as hex strings.
# This example will generate the identical output each time
# it is run.

for i in 0 .. 15
    cipherHex = crypt.encryptStringENC(data)
    print data + "\n";
    print cipherHex + "\n";
    data = cipherHex
end