Generating Vanity Keypairs in Solana Using TypeScript

As a developer working with Solana, you are probably familiar with the Keypair class provided by the Solana SDK. One of the most common use cases for keypairs is generating empty keys, also known as “public keys.” In this article, we will explore how to generate empty keypairs using TypeScript, beyond the default methods provided by the Keypair class.

Why Vanity Keypairs?

Vanity keypairs are useful when you need a short, unique public key for testing or demonstration purposes. They are also required for certain Solana features, such as account addition and account delegation.

Generating Vanilla Keypairs Using TypeScript

You can use the Keypair.generate() method to generate vanilla keypairs. However, this method does not provide an easy way to manually generate key pairs without specifying a prefix or suffix.

One way is to use a custom generator function that takes a string argument and returns a new instance of Keypair with the generated empty key pair. Here is an example implementation:

interface GenerateVanityKeypairOptions {
prefix?: string;
suffix?: string;
}
const generateVanityKeypair = (options: GenerateVanityKeypairOptions) => {
const [prefix, suffix] = Options.prefix && options.suffix ? [options.prefix, options.suffix] : [''];
const keypair = Keypair.generate({ prefix, suffix });
return { keypair };
};
const generVanityKeypair = (options: GenerateVanityKeypairOptions) => {
const keypair = generateVanityKeypair(options);
return keypair;
};
// Usage example:
const options: GenerateVanityKeypairOptions = {
prefix: "solana-keypair-",
suffix: ".json",
};
const vanillaKeypair = generateVanityKeypair(options);
console.log(vanillaKeypair.keypair.toString('base64')); // Output: your_vanity_keypair_key

In this example, the function generateVanityKeypair takes an options object with a “prefix” and/or “suffix” property. If specified, these values ​​are used to create a cosmetic keypair; otherwise, the default prefixes/suffixes are used.

The generateVanityKeypair function calls generateVanityKeypair and returns the generated vanilla key pair.

Matching prefix/suffix

While this implementation provides a basic way to generate empty key pairs using TypeScript, it may not be suitable for all use cases. If you need to match specific prefixes or suffixes, you can create a custom method that takes an options object with the “prefix” and/or “suffix” properties.

Here’s an updated example:

interface GenerateVanityKeypairOptions {
prefix?: string;
suffix?: string;
}
const generVanityKeypair = (options: GenerateVanityKeypairOptions) => {
if (!('prefix' in options || 'suffix' in options)) {
throw new Error('Missing required option');
}
const [prefix, suffix] = Options.prefix && options.suffix ? [options.prefix, options.suffix] : [''];
const keypair = Keypair.generate({ prefix, suffix });
return keypair;
};
const generVanityKeypair = (options: GenerateVanityKeypairOptions) => {
if (!('prefix' in options || 'suffix' in options)) {
throw new Error('Missing required option');
}
const keypair = generateVanityKeypair(options);
return keypair;
};

In this updated example, the `generateVanityKeypair' function checks for both theprefix'' andsuffix'' properties. If either is missing, an error is thrown.

Creating empty keypairs using TypeScript, beyond the default methods of the`Keypair” class, can be achieved by using a custom generator function that takes a string argument. This implementation provides a basic way to generate vanilla keypairs with prefixes and suffixes, but you may need to create additional logic to match specific keys.

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