Base100 💯

Base💯 is an encoding method that represents each byte as a unique Unicode symbol displayed as an emoji. Base100 thus allows binary data to be represented as a sequence of Unicode symbols, without separators or standard ASCII characters.

Base100 maps each byte to a Unicode code point. The 256 possible byte values—from 0 to 255, therefore correspond to the code points ranging from U+1F3F7 to U+1F4F6 (256 emojis in total).

Base100 decoding involves converting each Base100 symbol into its corresponding byte. For each symbol, its value is obtained by subtracting U+1F3F7 from its Unicode code point.

The resulting bytes can then be interpreted as binary data or decoded as UTF-8 text if they constitute a valid UTF-8 sequence.

The message is composed only of emoji, one per byte, belonging to the Unicode range U+1F3F7 to U+1F4F6.

If the plain message is written in ASCII code and is 10 characters long, the encrypted message is made up of 10 emojis (equivalent to one digit by substitution).

If the plain message is only composed of letters (and they are all the same case, no upper and lower case) then the message is composed of at most 26 emojis (equivalent to a monoalphabetic substitution).

The number 100, sometimes written 💯 (double underlined number one hundred emoji) is a clue.

The Emoji characters used are only these:

🏷, 🏸, 🏹, 🏺, 🏻, 🏼, 🏽, 🏾, 🏿, 🐀, 🐁, 🐂, 🐃, 🐄, 🐅, 🐆, 🐇, 🐈, 🐉, 🐊, 🐋, 🐌, 🐍, 🐎, 🐏, 🐐, 🐑, 🐒, 🐓, 🐔, 🐕, 🐖, 🐗, 🐘, 🐙, 🐚, 🐛, 🐜, 🐝, 🐞, 🐟, 🐠, 🐡, 🐢, 🐣, 🐤, 🐥, 🐦, 🐧, 🐨, 🐩, 🐪, 🐫, 🐬, 🐭, 🐮, 🐯, 🐰, 🐱, 🐲, 🐳, 🐴, 🐵, 🐶, 🐷, 🐸, 🐹, 🐺, 🐻, 🐼, 🐽, 🐾, 🐿, 👀, 👁, 👂, 👃, 👄, 👅, 👆, 👇, 👈, 👉, 👊, 👋, 👌, 👍, 👎, 👏, 👐, 👑, 👒, 👓, 👔, 👕, 👖, 👗, 👘, 👙, 👚, 👛, 👜, 👝, 👞, 👟, 👠, 👡, 👢, 👣, 👤, 👥, 👦, 👧, 👨, 👩, 👪, 👫, 👬, 👭, 👮, 👯, 👰, 👱, 👲, 👳, 👴, 👵, 👶, 👷, 👸, 👹, 👺, 👻, 👼, 👽, 👾, 👿, 💀, 💁, 💂, 💃, 💄, 💅, 💆, 💇, 💈, 💉, 💊, 💋, 💌, 💍, 💎, 💏, 💐, 💑, 💒, 💓, 💔, 💕, 💖, 💗, 💘, 💙, 💚, 💛, 💜, 💝, 💞, 💟, 💠, 💡, 💢, 💣, 💤, 💥, 💦, 💧, 💨, 💩, 💪, 💫, 💬, 💭, 💮, 💯, 💰, 💱, 💲, 💳, 💴, 💵, 💶, 💷, 💸, 💹, 💺, 💻, 💼, 💽, 💾, 💿, 📀, 📁, 📂, 📃, 📄, 📅, 📆, 📇, 📈, 📉, 📊, 📋, 📌, 📍, 📎, 📏, 📐, 📑, 📒, 📓, 📔, 📕, 📖, 📗, 📘, 📙, 📚, 📛, 📜, 📝, 📞, 📟, 📠, 📡, 📢, 📣, 📤, 📥, 📦, 📧, 📨, 📩, 📪, 📫, 📬, 📭, 📮, 📯, 📰, 📱, 📲, 📳, 📴, 📵, 📶

Base💯 was created by Adam Niederer. The Base100 project appeared on GitHub in 2017, with several versions released in October 2017.

The original repository serves as the primary reference for how this encoding works: here

The name Base100 likely comes from a combination of two ideas: Base (as in Base64), which indicates that it's a coding system, and 100, which has a 💯 emoji that's also very visual and eye-catching.

So the name isn't strictly technical, but rather marketing and symbolic.

No. Despite its name, Base100 does not use an alphabet of 100 symbols.

Base100 uses 256 different symbols, one for each possible byte value. The name Base100 is linked to the 💯 emoji, not to a mathematical base of 100.