> ## Documentation Index
> Fetch the complete documentation index at: https://docs.crossmint.com/llms.txt
> Use this file to discover all available pages before exploring further.

# CrossmintTEE

> Kotlin Interface

**Interface**

```kotlin theme={null}
interface CrossmintTEE
```

## Properties

### isHandshakeCompleted

```kotlin theme={null}
abstract val isHandshakeCompleted: Boolean
```

Indicates whether the handshake with the TEE service has been completed. Handshake must be completed before performing cryptographic operations.

### isOTPRequired

```kotlin theme={null}
abstract val isOTPRequired: StateFlow<Boolean>
```

Observable state indicating whether the OTP prompt should be shown.

## Functions

### awaitReady

```kotlin theme={null}
abstract suspend fun awaitReady()
```

Blocks continuation until a successful TEE load has completed. This method must be called before any signing operations.

### cancelOTP

```kotlin theme={null}
abstract fun cancelOTP()
```

Resets isOTPRequired to emit false

### performHandshake

```kotlin theme={null}
abstract suspend fun performHandshake(): Result<Unit, TEEError>
```

Performs the TEE handshake protocol. This is called automatically by load().

### provideOTP

```kotlin theme={null}
abstract fun provideOTP(code: String)
```

Provides the OTP code from the user to the TEE flow.

### signTransaction

```kotlin theme={null}
abstract suspend fun signTransaction(messageBytes: String, keyType: String, encoding: String, otpAuth: String): Result<String, TEEError>
```