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| File - Download Enigmak-2.0.0.zip | ||||||||
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A plea... Deanna and I have been running this site since 2008 and lately we're seeing a big increase in users (and cost) but a decline in percentage of users who donate. Our ad-free and junkware-free download site only works if everyone chips in to offset the revenue that ads on other sites bring in. Please donate at the bottom of the page. Every little bit helps. Thank you so much. Sincerely, your Older Geeks: Randy and Deanna Always scroll to the bottom of the page for the main download link. We don't believe in fake/misleading download buttons and tricks. The link is always in the same place. ENIGMAK v2.0.0 👉 Offline multi-round rotor cipher tool for encrypting messages with a 68-symbol alphabet. ENIGMAK is a browser-based cipher machine inspired by the historical Enigma rotor machine, but built on a fundamentally different architecture for educational, research, and general personal use. It runs entirely offline as a single HTML file with no installation, no server, and no network requests, and the project also includes Python and JavaScript implementations. ENIGMAK supports 1 to 13 rotors with irregular key-derived stepping, up to 34 Steckerbrett character-pair swaps, 10 keyboard layouts as substitution tables, key-derived rounds, a keyed diffusion layer, nonce support, embedded message authentication, a key fingerprint, and passphrase-based key representation. The author notes that it has not undergone formal cryptanalytic review and should not be used for classified, medical, legal, financial, or life-critical communications.  Features: 68-symbol alphabet covering uppercase letters, digits, semicolon, and standard special characters 1 to 13 rotors with irregular key-derived stepping Up to 34 symmetric Steckerbrett character-pair swaps Dynamic plugboard and scramble stages from unused keyboard layouts 10 keyboard layouts used as substitution tables Key-derived rounds from 1 to 999 Keyed 68-position diffusion transposition layer Optional nonce to prevent identical plaintexts from producing identical ciphertexts Embedded message authentication checksum at a key-derived position 4-character verbal key fingerprint Passphrase encoding for key sharing Live IoC display for statistical feedback Full offline operation with no dependencies for the main cipher files Included Python and JavaScript implementations alongside the HTML version Electron desktop wrapper available for standalone desktop use Supports only the 68-symbol ASCII alphabet; non-ASCII characters pass through unencrypted Supported operating systems: Windows macOS Linux Supported languages: English Changes: v2.0.0 04-03-26 Breaking Change Ciphertexts from v1.0.0 are not compatible with v2.0.0. Keys are unchanged; messages encrypted under v1.0.0 must be re-encrypted. Security Fixes (consolidated from rc.1 through rc.3.1) Position whitening layer (rc.1) - a key-derived LCG stream (seed = keySum XOR 0xC0FFEE42, period 2^32) applies a unique offset to every character position. Eliminates the confirmed chosen-plaintext periodicity leak present in v1.0.0, where bucketing ciphertext by position modulo 68 revealed measurable distribution bias (L1 ~0.025 in v1.0.0, now ~0.42+ consistent with random noise). Step mask leakage eliminated as a side effect. Credit: r/cryptography community, March 2026. Key-derived layout permutations (rc.2) - the ten keyboard layouts (QWERTY, Colemak, Dvorak, etc.) no longer use fixed ergonomic wirings as substitution tables. Each layout now derives a unique bijective permutation of all 68 characters from key material (seed = keySum XOR (layoutIndex * 0x9E3779B9 + 0xABCD1234)). Eliminates keyboard layout bias: cross-key top-5 character overlap drops to 0/5, consistent with random. All 10 permutations verified bijective by layout_bias_check.py. Rotor state feedback in position offsets (rc.3) - each character's round and scramble shifts now incorporate an FNV-1a digest of the current rotor state combined with absolute position and key material. Creates a cryptographic feedback loop where rotor state after character N influences offsets for character N+1. Eliminates the monocharacter oracle: encrypting repeated characters no longer produces extractable cycle structure, even under worst-case settings (1 layout, 1 rotor, 0 steck pairs, 1 round). New Features Key strength calculator - theoretical keyspace in bits, broken down by component: layouts (ordered permutations P(10,k)), rotors ((10 * 68)^n), steckerbrett pairs, rounds (999), and optional nonce (68^3). Available in the HTML machine, Python CLI (enigmak.py keystrength <key>), and JS module. Dedicated bias checker (python/layout_bias_check.py) - five-test suite verifying layout map bijectivity, frequency uniformity, cross-key independence, inter-layout independence, and elimination of v1.0.0 identity mapping bias. All five tests pass; old v1.0.0 wirings fail three of five. Electron desktop wrapper updated to v41.1.0 (Chromium 146, Node.js 24.14.0) with electron-builder 26.8.1. Windows arm64 build target added. About dialog updated with correct version, 68-symbol alphabet, and keyspace. Fixes calc_key_strength permutation formula - was using C(10,k) unordered combinations; corrected to P(10,k) ordered permutations. Layout order matters in ENIGMAK -- Colemak then Dvorak produces different ciphertext than Dvorak then Colemak. Previous formula understated keyspace by up to 24x for 4 layouts. Dvorak layout definition corrected - top row now correctly maps as ',.PYFGCRL, home row AOEUIDHTNS, bottom row ;QJKXBM. Python files reorganised - enigmak.py and layout_bias_check.py moved to python/ subfolder for cleaner project structure. Supply chain security note added to README advising users to run npm audit before building the Electron wrapper. UX Lowercase input warning - the HTML machine now shows a visible amber warning when lowercase input is detected, noting that lowercase letters fold to uppercase and case-sensitive content (URLs, passwords) may not decrypt identically. Non-ASCII note added to README and SECURITY.md: characters outside the 68-symbol ASCII alphabet pass through unencrypted. Do not use ENIGMAK to encrypt content containing non-ASCII characters. Known Limitations Non-ASCII characters (Cyrillic, accented Latin, emoji, etc.) pass through unencrypted, leaking content. Planned for v3.0.0. Word boundary leakage: spaces are not in the 68-symbol alphabet and appear in plaintext in ciphertext, revealing word lengths. Planned for v3.0.0. Lowercase letters fold to uppercase, breaking case-sensitive content such as URLs and passwords. Planned for v3.0.0. Not formally audited. Do not use for classified, medical, legal, or life-critical communications. Instructions: Download Enigmak-2.0.0.zip from OlderGeeks.com Right-click the file and choose Extract All Open the extracted folder Then open the Enigmak-main folder To use the main program (recommended): Locate enigmak.html inside the folder Double-click enigmak.html It will open in your default web browser No installation or internet connection is required To encrypt a message: Enter or configure a valid key string Type or paste your message into the input field Click EncryptTo decrypt a message: Paste the ciphertext (including checksum) Enter the exact same key Click DecryptOptional (advanced users): Open the python folder Run: python enigmak.py encrypt "PLAINTEXT" "KEY STRING" Use layout_bias_check.py to test cipher behaviorOptional (desktop app build): Open the electron folder Requires Node.js Run: npm installnpm startAdditional documentation: Open docs/index.html for a browser-based overview See README.md, SPECIFICATION.md, and TECHNICAL.md for full detailsImportant notes: Main usage is through enigmak.html no installation needed Only supports a 68-character ASCII set Lowercase letters are converted to uppercase Non-ASCII characters are not encrypted Click here to visit the author's website. Continue below for the main download link. |
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| Downloads | Views | Developer | Last Update | Version | Size | Type | Rank | |
| 208 | 828 | Awesomem8112 | Apr 03, 2026 - 11:22 | 2.0.0 | 110.6KB | ZIP |  , out of 6 Votes. |
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| File Tags | ||||||||
| ENIGMAK ENIGMAK v2.0.0 rotor cipher offline encryption browser based cipher Python JavaScript Electron security tool cryptography utility | ||||||||
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