Further improve and add in more complexity with layering.

Put all the text and markdowns in:

```
[TEXT HERE]
```

Here's the doc:

```
Modular Keycase Reverse(/) Puzzle Algorithm
Overview

Algorithm Name: Modular Keycase Reverse(/)
Inspired By: Caesar Cipher, AES
Complexity Layers: 2x Puzzle Layering, Advanced Encryption Techniques (5x), Self-Explanatory Complexity (8x)
Purpose: Encryption, Puzzle-Solving Challenges, Cryptography Exercises

Algorithm Structure

The Modular Keycase Reverse(/) (MKR) algorithm is a layered, modular encryption method with advanced character manipulation and case-dependent transformations. This algorithm applies two main encryption layers to ensure the complexity and obfuscation of the encoded message. Designed for difficult puzzle applications, it uses modular shifts, case-based transformations, and reversible steps to secure encoded messages.

Encoding Process
Inputs:
Plaintext Message: The original message to be encoded.
Key Phrase: A chosen keyword or phrase that dictates the shifts and transformations for each character.
Modular Base (M): A number, generally a prime, used as the base for modular arithmetic.
Step 1: Modular Key Shift

Repeat Key Phrase across the length of the Plaintext Message. For example, if the message is "HELLO WORLD" and the key is "KEY", repeat the key to match: "KEYKEYKEYKE".

Character Shifts:

Convert each character in both the Plaintext Message and the Key Phrase to its ASCII value.
For each character pair (P, K), calculate the Modular Shift:
𝐶
=
(
𝑃
+
𝐾
)
m
o
d
 
 
𝑀
C=(P+K)modM
Convert each result C back to a character, ensuring it wraps within the ASCII range of printable characters (32–126).

Result: Generate an intermediate encoded string after the Modular Key Shift.

Step 2: Case-Based Reversal

Case Inspection:

Split the characters in the intermediate encoded string into uppercase and lowercase subsets.
For Uppercase Characters:
Reverse the positions within the subset but keep them in their positions within the string.
For Lowercase Characters:
Apply a positional swap such that every second lowercase character is swapped with the one next to it.

Special Character Wrap:

Insert a specific delimiter (e.g., /) at every prime position within the string (2, 3, 5, 7, etc.) to increase obfuscation.

Result: Obtain the final encoded message as a complex string that includes modular transformations, case reversals, and special character wraps.

Decoding Process

To decode a message encoded with the Modular Keycase Reverse(/) algorithm, the recipient must have access to the Key Phrase and Modular Base (M).

Remove Special Character Wraps:

Identify and remove any / delimiters from the prime positions of the encoded message.

Reverse Case-Based Transformations:

For Uppercase Characters: Reverse the previous reversal of positions.
For Lowercase Characters: Undo the positional swaps applied in the encoding.

Modular Key Unshift:

Using the repeated Key Phrase, apply the inverse modular operation:
𝑃
=
(
𝐶
−
𝐾
)
m
o
d
 
 
𝑀
P=(C−K)modM
Convert each calculated P back to the character representation.

Result: Recover the original Plaintext Message.

Applications
Cryptography Challenges: Suitable for escape rooms, ARGs, and puzzles requiring high-level encryption mechanics.
Puzzle Games: Used in games where decoding messages is part of the storyline or objectives.
Educational Use: Demonstrates advanced modular arithmetic and character manipulation in cryptographic teaching.
Secret Communication: Can be used for secret message transmission where reversible encryption is critical.
Example

Plaintext Message: "HELLO WORLD"
Key Phrase: "KEY"
Modular Base (M): 97

Encoding Process:

Modular Key Shift applied, resulting in: Intermediate String "X*C!H5Q9"
Case-Based Reversal, final encoded message: "X*/C!H/5Q9"

Decoding Process:

Remove / characters, undo transformations, and reverse shifts to retrieve "HELLO WORLD".