Protein Motifs to Hide GA-Based Encrypted Data

Algorithm 4

Discovery Algorithm.

	Input: Protein_cover.
	Fibonacci_Seed1.
	Fibonacci_Seed2;
	Output: Encrypted Data;
	Begin.
	0://Initialization.
	Enc_data = “”; new = Fibonacci_Seed2;
	while (abs(sin(Fibonacci_Seed1))<0.3 or abs(sin(Fibonacci_Seed2))<0.3).
	{ new = Generate_fibonacci_term(); }
	Step = 1;
(1)	while (not_end_of(Protein_cover)) do
	{//get byte from cipher text.
	sin4FibonacciTerm = trunc(abs(sin(new))10);
	Byte1 = get_byte_at_location(Protein_cover, Step);
	P2bits = extract(Byte1, 4,2);//extract 2 bits starting from bit#4.
	Byte2 = get_byte_at_location(Protein_cover, Step+1);
	P3bits2 = extract(Byte2, 1,3);//extract 3 bits starting from bit#1.
	Byte3 = get_byte_at_location(Protein_cover, Step+2);
	P3bits1 = extract(Byte3, 1,3);//extract 3 bits starting from bit#1.
	Enc_data = Enc_data + concatenate(P2bits, P3bits2, P3bits1);
	Step = Step + sin4FibonacciTerm;
	new = Generate_fibonacci_term();
	}//while.
	return Encrypted data, Enc_data, to be decrypted by the decryption algorithm;
	End//Hiding Algorithm.