Solana: Having any pubkey as signer for a function

HERE’S AN EXAMPLE ARTICLE ON CREATING A FUNCTION WITH ANY PUBKEY AS SIGNER FOR A FUNCTION ON SOLANA:

Creating A Function With Any Pubkey As Signer On Solana

In the world of blockchain, have different types of accounts (or “signers”) can be crucial in Building Complex Programs. One common scenario is when you want to create a function that requires two or more signers to verify its execution. In this article, we’ll explore how to achieve this on Solana using Anchor.

The Basics

Before diving into the code, let’s quickly cover some essential concepts:

• A Signer is an account that has a private key (also known as a" pubkey ") and can be used to sign messages or contracts.

• In Anchor, you don't need to specify the type of signer in your program. Instead, you'll use thedeclare_id!Macro to declare it.

Example Code

HERE'S AN EXAMPLE CODE SNIPPET THAT DEMONSTRATES How to create a Function with any Pubkey As Signer:

rust

Use Anchor_lang :: Prelude ::*;

Declare_id! (“5FB2DXRY8JW4K9YFB6JZ1APPU3OK9KQCZCR7MS”);

#[Program]

pub fn create_function (

#[-parameter]

New_value pub: string,

#[parameter]

Pubkey1: Pubkey,

#[parameter]

Pubkey2: Pubkey,

) -> Result <(), Error> {

let mut accounts = [

Signer :: NEW (& Pubkey1, 1),

Signer :: NEW (& Pubkey2, 1),

];

Let (address, account) = Self.signer_sign_out (Accounts)?;

// now we can use the signed address and account to call our function

#[allow (dead_code)]

pub fn my_function (

#[param]

param_value: string,

) -> Result {

Let result = Account :: Call (& Address, “My_function”, & Param_value)?

OK (result)

}

}

`

In this example, we’ve created a create_function program that takes three parameters:

• New_value: the string to be returned by our function

• Pubkey1 andPubkey2: these are two public keys. In Anchor, you can use any pubkey as signer for your functions.

• The Signer_sign_out Function Returns a Tuple of(Address, Account), WhereAddress is the signed address and account is the signed account.

When we call our function my_function, we pass inParam_value: "Hello". Since Pubkey1 andPubkey2 are any Pubkey as Signer, We Can Using Them To Sign This Parameter Value. The Account :: Call Function Returns a result of typeresult , which indicates whether the call was successful.

Conclusion

In this article, we have explored how to create a function with any pubkey as signer on Solana using anchor. By leveraging the Declare_id! Macro and using Signer :: NEW to create signers, you can write functions that require multiple signers to verify their execution. Remember to keep your code secure by following best practices for signing and verifying signatures.

I Hope this Helps! Let me know if you have any questions or need further clarification on any of the concepts discussed in this article.