-- Apr 13 In-Class Exercise Thread
m_1 = 42 / 2 = 21
m_2 = 42 / 3 = 14
m_3 = 42 / 7 = 6
compute t_i=(m_i)^(β1) mod n_i:
When i = 1:
EE(21, 2) -> EE(2, 1) -> EE(1, 0) = (1, 1, 0)
EE(2, 1) = (1, 0, 1)
EE(21, 2) = (1, 1, -10)
21*a - 10*2 = 1 where a = 1
c_1 = 21*1 = 21
When i = 2:
EE(14, 3) -> EE(3, 2) -> EE(2, 1) -> EE(1, 0) = (1, 1, 0)
EE(2, 1) = (1, 0, 1)
EE(3, 2) = (1, 1, -1)
EE(14, 3) = (1, -1, 5)
14*a + 5*3 = 1 where a = -1
c_2 = 14*-1 = -14
When i = 3:
EE(6, 7) -> EE(7, 6) -> EE(6, 1) -> EE(1, 0) = return (1, 1, 0)
EE(6, 1) = (1, 0, 1)
EE(7, 6) = (1, 1, -1)
EE(6, 7) = (1, -1, 1)
6*a + 1*7 = 1 where a = -1
c_3 = 6*-1 = -6
a = (a_1*c_1)+(a_2*c_2)+(a_3*c_3)
a = 1*21 + 2*-14 + 5*-6 = -37
a = -37 mod 42 = 5 mod 42
Check and confirm all the following are true:
5 = 1 mod 2,
5 = 2 mod 3,
5 = 5 mod 7
(
Edited: 2022-04-15)
<pre>
m_1 = 42 / 2 = 21
m_2 = 42 / 3 = 14
m_3 = 42 / 7 = 6
compute t_i=(m_i)^(β1) mod n_i:
When i = 1:
EE(21, 2) -> EE(2, 1) -> EE(1, 0) = (1, 1, 0)
EE(2, 1) = (1, 0, 1)
EE(21, 2) = (1, 1, -10)
21*a - 10*2 = 1 where a = 1
c_1 = 21*1 = 21
When i = 2:
EE(14, 3) -> EE(3, 2) -> EE(2, 1) -> EE(1, 0) = (1, 1, 0)
EE(2, 1) = (1, 0, 1)
EE(3, 2) = (1, 1, -1)
EE(14, 3) = (1, -1, 5)
14*a + 5*3 = 1 where a = -1
c_2 = 14*-1 = -14
When i = 3:
EE(6, 7) -> EE(7, 6) -> EE(6, 1) -> EE(1, 0) = return (1, 1, 0)
EE(6, 1) = (1, 0, 1)
EE(7, 6) = (1, 1, -1)
EE(6, 7) = (1, -1, 1)
6*a + 1*7 = 1 where a = -1
c_3 = 6*-1 = -6
a = (a_1*c_1)+(a_2*c_2)+(a_3*c_3)
a = 1*21 + 2*-14 + 5*-6 = -37
a = -37 mod 42 = 5 mod 42
Check and confirm all the following are true:
5 = 1 mod 2,
5 = 2 mod 3,
5 = 5 mod 7
</pre>