In a Multiplicative cipher, each character of the alphabet is assigned a value (starting at a zero index [A=0, B=1, etc]) and a coprime key to the length of ...

Tool to decrypt/encrypt with multiplicative encryption, a substitution cipher based on a multiplication operation.

This page defines a Multiplication Cipher Theory. In this case we take each letter (P) and multiple it by a value (a).

Tool to decrypt/encrypt with Affine cipher, an encryption function with additions and multiplication that codes a letter into another with value (ax + b) ...

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Опубликовано: 21 авг. 2022 г.

The Affine cipher is a monoalphabetic substitution cipher, where each letter in the alphabet is mapped to another letter through a simple mathematical ...

In affine cipher each letter in an alphabet is mapped to its numeric equivalent, encrypted using a simple mathematical function, and converted back to a letter.

6 авг. 2024 г. · The basic task behind the multiplicative cipher is to use a large prime number as a multiplication key, and then use the modular arithmetic of ...

If the multiplicative key is 2, each ciphertext letter corresponds to two plaintext letters; this is a two-to-one mapping. Remember, for an inverse to exist – ...

5 окт. 2020 г. · There is a matrix A that we don't want to be revealed, and there is a matrix B that is known. Is there any way to calculate A×B without revealing A?