Q: What is a product cipher?

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A cipher machine is a mechanical device for encoding and decoding messages.

The Greeks

unconditional security no matter how much computer power or time is available, the cipher cannot be broken since the ciphertext provides insufficient information to uniquely determine the corresponding plaintext computational security given limited computing resources (eg time needed for calculations is greater than age of universe), the cipher cannot be broken

code.

Using a keyword as long as the message will make a vigenere cipher unbreakable.

Related questions

Is the structure used by many signifi-cant symmetric block ciphers currently in use.

The BAUDOT code is made from a cipher. The cipher that does this is also known as a Bacon cipher.

how to read pigpen cipher

Cipher Complex happened in 360.

Cipher System was created in 1995.

Cipher - album - was created in 2001.

Cipher Method was created in 2000.

Cipher in the Snow was created in 1973.

definitely cipher

The duration of Cipher in the Snow is 1260.0 seconds.

The duration of Cipher Bureau is 1.07 hours.

A transposition cipher involves scrambling the letters in a message. The strengths of this are that there is less correspondence between characters, as there is in a substitution cipher, and that it tends to reduce redundancy.