ciphertext
cyphertext
cryptotext

He will write out the ciphertext first, using every third line.

In this case we have to send a ciphertext for both cases.

Take the ciphertext message and put it in five character groups.

Which means you'd have an equal amount of ciphertext groups, right?

The ciphertext was read at high speed from a paper tape.

However, this is at the cost of a very large ciphertext expansion.

In particular, changing one bit of the key should change the ciphertext completely.

This ciphertext could be shown to the Americans without embarrassment.

A new value of r is chosen for each ciphertext.

Certain attacks are easier to carry out when a large amount of ciphertext is available.

The letters are then combined with no spaces for the final ciphertext.

If a ciphertext number becomes larger than 25 we wrap it to a value between 0-25.

One way to handle this last issue is through the method known as ciphertext stealing.

Another approach is to mark the ciphertext with markers at regular points in the output.

The ability to obtain any amount of information from the underlying ciphertext is considered a success.

"As opposed to ciphertext, which would be the characters you're using to conceal them."

The resulting ciphertext letter is printed onto the paper tape.

Considered one of the classic books on the subject, and includes many sample ciphertext for practice.

Here each ciphertext character was represented by a number.

An attacker already has access to the entire ciphertext packet.

On the other, it gives him a chance to go through the ciphertext by hand, at the very lowest level, which might be useful later.

That ciphertext is then fed into the next round of encryption under the same key.

It uses a syndrome as ciphertext and the message is an error pattern.

Any adversary that can see the ciphertext should not be able to determine anything about the original message.

He reads the ciphertext message to him letter by letter.