Exercise 5:


Plain text:
informationsecurity
1.key:
vlaksjdhfgqodzmxncb

Alt.key:
tlftrffwmixor|{xbch

Vernam Cipher:

 i  		n 		f 		o 		 	r 		m		a 		t 			i 		o 		n
01101001 01101110 01100110 01101111 01110010 01101101 01100001 01110100 01101001 01101111 01101110

 s 			e 		c  		  u 		r 		i 		t 		  y
01110011 01100101 01100011 01110101 01110010 01101001 01110100 01111001

+

  v  		l 		a 		k 			s 		j 		d 		h 			f 		g 		q
01110110 01101100 01100001 01101011 01110011 01101010 01100100 01101000 01100110 01100111 01110001

 o 			d 		z 		m 			x 		n 		c 		  b
01101111 01100100 01111010 01101101 01111000 01101110 01100011 01100010

=

Non-displayable characters so cipher text is in ASCII decimal numbers:

Cipher text > 31 2 7 4 1 7 5 28 15 8 31 28 1 25 24 10 7 23 27

Alternate text: knapsackbagssecrets