import io.outblock.flowwalletkit.security.KeyGenerator
 
// Generate a new key pair
val keyPair = KeyGenerator.generateKeyPair()
 
// Generate a deterministic key from seed
val seed = ByteArray(32) // Your seed bytes
val deterministicKey = KeyGenerator.generateFromSeed(seed)

import io.outblock.flowwalletkit.security.KeyStorage
 
// Store a private key
KeyStorage.storePrivateKey(privateKey, "key_alias")
 
// Retrieve a private key
val privateKey = KeyStorage.getPrivateKey("key_alias")

import io.outblock.flowwalletkit.security.Encryption
 
// Encrypt data
val encrypted = Encryption.encrypt(data, publicKey)
 
// Decrypt data
val decrypted = Encryption.decrypt(encrypted, privateKey)

// Derive encryption key from password
val salt = ByteArray(16) // Random salt
val key = Encryption.deriveKey(password, salt)

import io.outblock.flowwalletkit.security.Network
 
// Configure secure network communication
Network.configure {
    certificatePinning = true
    minimumTLSVersion = TLSVersion.TLS_1_3
    allowedCipherSuites = listOf(/* secure cipher suites */)
}

import io.outblock.flowwalletkit.security.SecurityChecks
 
// Check for root/jailbreak
if (SecurityChecks.isDeviceRooted()) {
    // Handle rooted device
}

// Verify app integrity
SecurityChecks.verifyAppIntegrity(context) { result ->
    when (result) {
        is IntegrityResult.Valid -> // Proceed
        is IntegrityResult.Invalid -> // Handle integrity violation
    }
}

import io.outblock.flowwalletkit.security.SecureMemory
 
// Store sensitive data in secure memory
val secureString = SecureMemory.allocateString("sensitive data")
try {
    // Use secure string
} finally {
    secureString.clear() // Properly clear memory
}

// Generate keys securely
val keyPair = KeyGenerator.generateSecureKeyPair()
 
// Never expose private keys
private fun signTransaction(transaction: Transaction) {
    val signature = KeyStorage.signWithStoredKey(transaction)
    // Use signature...
}

// Always encrypt sensitive data before storage
storage.saveEncrypted("wallet_data", walletData)
 
// Use secure random for critical operations
val random = SecureRandom()
val bytes = ByteArray(32)
random.nextBytes(bytes)

sealed class SecurityError : Exception() {
    class KeyGenerationError : SecurityError()
    class EncryptionError : SecurityError()
    class IntegrityError : SecurityError()
    class SecurityCheckError : SecurityError()
}
 
try {
    KeyGenerator.generateKeyPair()
} catch (e: SecurityError) {
    when (e) {
        is SecurityError.KeyGenerationError -> // Handle key generation failure
        is SecurityError.EncryptionError -> // Handle encryption failure
        is SecurityError.IntegrityError -> // Handle integrity check failure
        is SecurityError.SecurityCheckError -> // Handle security check failure
    }
}

import io.outblock.flowwalletkit.security.SecurityConfig
 
SecurityConfig.configure {
    // Key generation parameters
    keySize = 2048
    keyAlgorithm = "RSA"
    
    // Encryption settings
    encryptionAlgorithm = "AES/GCM/NoPadding"
    ivLength = 12
    
    // Security checks
    requireDeviceUnlocked = true
    requireStrongBox = true
    requireBiometric = false
}

import io.outblock.flowwalletkit.security.BiometricAuth
 
// Initialize biometric authentication
val biometricAuth = BiometricAuth(context)
 
// Authenticate user
biometricAuth.authenticate(
    title = "Confirm Transaction",
    subtitle = "Use biometric to sign transaction",
    onSuccess = { 
        // Proceed with operation
    },
    onError = { error ->
        // Handle authentication error
    }
)

import io.outblock.flowwalletkit.security.SecurityAudit
 
// Log security-relevant events
SecurityAudit.logEvent(
    type = SecurityEventType.KEY_GENERATION,
    result = SecurityEventResult.SUCCESS,
    details = "Generated new key pair"
)
 
// Get security audit log
val auditLog = SecurityAudit.getLog()

import io.outblock.flowwalletkit.security.EmergencyKit
 
// Configure emergency measures
EmergencyKit.configure {
    // Define conditions for emergency
    maxFailedAttempts = 3
    lockoutDuration = 24.hours
    
    // Define recovery actions
    onEmergency = {
        wipeKeys()
        notifyUser()
        lockWallet()
    }
}