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Import Key

Import key allows to transit from an EOA wallet to an MPC wallet. This is a common use case in the digital wallet ecosystem where a wallet provider wants to onboard existing users from other wallets.

note

Although converting an EOA wallet to an MPC wallet increases security, it's important to note that the original private key still exists in full form. Therefore, we cannot provide the same level of security guarantees as with a natively generated MPC wallet, where the full private key is never assembled.

Step 1 : Create Session​

Step 2 : Perform Import​

  • Call trioSession.import() with keysharePrivateKey and rootChainCode(explained below) which returns Result of Success with Keyshare ByteArray or Failure with exception.

Example​

Example.kt
suspend fun performKeyImport(keysharePrivateKey: ByteArray, trioSession: TrioSession): ByteArray {
    return withContext(Dispatchers.IO) {
        trioSession.import(
            keysharePrivateKey = keysharePrivateKey, rootChainCode = getRootChainCode(),
        ).getOrThrow()
    }
}
  • keysharePrivateKey: This is the private key to be imported. It's a 32 bytes ByteArray.
  • rootChainCode: This is the BIP32 root chain code used along with this private key. If it doesn't exist, please use a cryptographically secure random 32 bytes ByteArray.

You have now successfully imported an existing private key into an MPC wallet! 🎉