Documentation

Example

let values = vec!['🍔', '🍟', '🌭', '🍦', '🍩'];
let indices = vec![(1, 1), (1, 5), (5, 5), (5, 1), (3, 3)];
let diagram = SimpleDiagram::from_values(&values, &indices);

The simple diagram looks like this:

Generate mnemonic:

let master = diagram.bip32_master("🚲🍀🌈".as_bytes())?;
let mnemonic = master.bip85_mnemonic(Language::English, 15, 0)?;

lady announce wife please settle connect april hour caution split festival genuine logic digital dignity

Generate wallet private key

let priv_key = master.bip85_wif(0)?;

L25LxS22MwRpEnnFs81XitJyrkimpZGLjgKHRAikLxJoxWMkVuHd

Generate xpriv

let xpriv = master.bip85_xpriv(0)?;

xprv9s21ZrQH143K47Cxw6R8QnGdAru5BaK7kT5awzC9VvmpXnpCQPdEmPyJeR9w3FeJ3hmEBRCRLGhMNpnkcM9q2w3J3T55bSSqMLRDpJLZU4B

Generate password

let pwd = master.bip85_pwd(Password::Emoji, 20, 0)?;

🙏✋🍕🌻🎄🙏👍🔔🔔🍺💊🍄🍺⚡✋👌😍🚗🍎🚗

Entropy Evaluation

mnemonic 12 words entropy = (2048)¹² = (2¹¹)¹² = 2¹³²
mnemonic 24 words entropy = (2048)²⁴ = (2¹¹)²⁴ = 2²⁶⁴
(In fact, because the tail of 4bits/8bits is a checksum, the real entropy is 2¹²⁸/2²⁵⁶.)

Only Emoji Characters

emoji characters amount 1,431 ≈ 2¹⁰
9 cells permutation in 7 * 7 grid = (A₄₉⁹) = 49! / 40! ≈ 2⁴⁹
9 emoji characters in simple diagram = (2¹⁰)⁹ * 2⁴⁹ = 2¹³⁹ > 2¹³²
18 cells permutation in 7 * 7 grid = (A₄₉¹⁸) = 49! / 31! ≈ 2⁹⁵
18 emoji characters in simple diagram = (2¹⁰)¹⁸ * 2⁹⁵ = 2²⁷⁵ > 2²⁶⁴

So, 9 emoji characters provide the equivalent encryption strength of 12 mnemonics.
and 18 emoji characters provide the equivalent encryption strength of 24 mnemonics.

Any Unicode Characters

unicode characters amount 155,063 ≈ 2¹⁷
6 cells permutation in 7 * 7 grid = (A₄₉⁶) = 49! / 43! ≈ 2³³
6 unicode characters in simple diagram = (2¹⁷)⁶ * 2³³ = 2¹³⁵ > 2¹³²
12 cells permutation in 7 * 7 grid = (A₄₉¹²) = 49! / 37! ≈ 2⁶⁵
12 unicode characters in simple diagram = (2¹⁷)¹² * 2⁶⁵ = 2²⁶⁹ > 2²⁶⁴

So, 6 unicode characters provide the equivalent encryption strength of 12 mnemonics.
and 12 unicode characters provide the equivalent encryption strength of 24 mnemonics.

ComplexDiagram can be filled with 50 unicode characters in a cell, providing better encryption strength.
(In fact, higher entropy values are meaningless because the length of the private key is 256 bits.)