How does a double transposition cipher work?

Also to know is, which is the key in a double transposition cipher?

Double transposition encryption uses twice a transposition cipher, usually the first transposition is by columns, and the second by rows. With the message found after the first permutation, then perform a second transposition, but with the rows.

How to encrypt using Double Transposition cipher?

	1	2
E	O	E
Y	D	X

Likewise, what is transposition cipher with example? One example of a transposition cipher, is to reverse the order of the letters in a plaintext. So "a simple example" becomes "ELPMAXE ELPMIS A". Another, similar, way to encrypt a message would be to reverse the letters of each word, but not the order in which the words are written.

Moreover, how does a transposition cipher work is it effective?

Transposition Ciphers. Unlike a simple substitution cipher (such as the Caesar Cipher), which switches the letters of a message around, Transposition Ciphers instead work by messing with the order of the letters to hide the message being sent. An excellent example of a Transposition Cipher is Columnar Transposition.

How do you break a transposition cipher?

The common way to break transposition cipher is by studying the frequency of digrams combining the columns in different ways or anagraming and comparing it to typical frequencies for your language.