Signer

Kotlin Interface

Interface

interface Signer

Properties

Property	Type	Description
signerData	SignerData	The admin signer data associated with this signer. Contains signer-specific information (email, public key, etc.)

Functions

Function	Description
initialize	Initializes the signer with necessary service context. Must be called before sign() operations.
locator	-
sign	Signs a message and returns the signature.
signForApproval	Signs a message and returns typed output suitable for building an approval. The default implementation wraps sign as SigningOutput.Standard. Override to return SigningOutput.Passkey for passkey-based signers.

initialize

abstract suspend fun initialize(service: CrossmintService?)

Initializes the signer with necessary service context. Must be called before sign() operations.

locator

open fun locator(): String

sign

abstract suspend fun sign(message: String): Result<String, SignerError>

Signs a message and returns the signature.

signForApproval

open suspend fun signForApproval(message: String): Result<SigningOutput, SignerError>

Signs a message and returns typed output suitable for building an approval. The default implementation wraps sign as SigningOutput.Standard. Override to return SigningOutput.Passkey for passkey-based signers.