Encrypt
Encrypt this message using multiplicative key of 5:
trenches
Answer: rhunkjum
Decrypt this message that used multiplicative key of 11:
gsbwzmj
Answer: Ketchup
Convert from Binary to Decimal:
10101001101
Answer: 1357
240 + 325 = ______ (mod 11)
Answer: 4
Find a linear combination such that
7x+4y = GCD(7,4)
7x+4y = 1
x=-1
y=2
Encrypt this message using multiplicative key of 23:
garden snake
Answer: iabronynawo
Decrypt this message that used multiplicative key of 21:
anjmlijg
Answer: antidote
Convert from Binary to Decimal:
111111111011
Answer: 4091
54 - 356 = ______ (mod 21)
Answer: 13
Find a linear combination such that
21x+26y = GCD(26,21)
21x+26y = 1
x=5
y=-4
Encrypt this message using affine key of (7,14):
enigma machine
Answer: qbseuo uoclsbq
Decrypt this message that used affine key of (15,22):
ylfmzmyj
Answer: oblivion
Convert from Binary to Decimal:
001101101111
Answer: 879
102 * 345 = ______ (mod 143)
Answer: 12
Find a linear combination such that
1223x+5y = GCD(1223,5)
1223x+5y = 1
x=2
y=-489
Encrypt this message using affine key of (25,24):
Instructor Arlis
Answer: qlgfhewfkh yhnqg
Decrypt this message that used affine key of (25,13):
ywjujaufztv
Answer: pretentious
Convert from Decimal to Binary
11011
Answer: 10101100000011
12341*20890 = _____ (mod 26)
Answer: 22
Find a linear combination such that
836x+12y = GCD(836,12)
836x+12y = 4
x=-1
y=70
Encrypt this message using matrix key of
(8, 57)
(1, 10)
ZUQYWYLBIOVV
Answer: checkerboard
Decrypt this message that used matrix key of
(9, 13)
(1, 2)
XZBVLXPBWXYC
Answer: Red White Blue
Convert from Decimal to Binary
345978
1010100011101111010
256 = _____ (mod 192)
Answer: 145
Find a linear combination such that
9358x+843y = GCD(9358,843)
9358x+843y = 1
x=-119
y=1321