What is "substitutions"

Usage examples of "substitutions".

Their solution consists in large measure of breaking down the cipher until the method for solving monoalphabetic substitutions can be applied.

The better band-splitters shift these substitutions every few seconds or milliseconds.

But logic wasnt as great as the fear that she could be wrong, that there might be another explanation for the substitutions she had seen in the Tang vault.

But logic wasn’t as great as the fear that she could be wrong, that there might be another explanation for the substitutions she had seen in the Tang vault.

I made substitutions based on the assumption that K represented E, which meant, therefore, that the cipher alphabet would consist of a six-letter shift to the right of the plain-text alphabet.

Ciphers create substitutions for I mdependent letters or syllables, and they allow for more Mcomplex communications.