Kyber Dilithium Firmware Signer ANDROID v1
Kyber Dilithium Firmware Signer ANDROID v1
```kotlin
// MainActivity.kt
package com.pqcnotary
import android.os.Bundle
import android.widget.*
import androidx.activity.result.contract.ActivityResultContracts
import androidx.appcompat.app.AppCompatActivity
import kotlinx.coroutines.*
import java.io.File
import android.graphics.Color
class MainActivity : AppCompatActivity() {
private lateinit var modeGroup: RadioGroup
private lateinit var status: TextView
private lateinit var actionBtn: Button
private var isSign = true
private var fileUri: android.net.Uri? = null
private val pickFile = registerForActivityResult(ActivityResultContracts.GetContent()) { uri ->
uri?.let {
fileUri = it
actionBtn.text = if (isSign) "Sign Firmware" else "Verify Firmware"
actionBtn.isEnabled = true
}
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
modeGroup = findViewById(R.id.mode_group)
status = findViewById(R.id.status)
actionBtn = findViewById(R.id.action_btn)
modeGroup.setOnCheckedChangeListener { _, id ->
isSign = id == R.id.sign_mode
actionBtn.text = "Choose File"
actionBtn.isEnabled = false
fileUri = null
status.text = ""
}
actionBtn.setOnClickListener {
if (actionBtn.text == "Choose File") {
pickFile.launch("*/*")
} else {
if (isSign) signFirmware() else verifyFirmware()
}
}
}
private fun signFirmware() = CoroutineScope(Dispatchers.IO).launch {
val uri = fileUri ?: return@launch
val input = contentResolver.openInputStream(uri) ?: return@launch
val data = input.readBytes()
input.close()
val signer = com.pqcnotary.KyberDilithiumFirmwareSigner()
val (ct, iv, tag, enc, sig, kpk, dpk, hash, ts) = signer.signFirmware(data)
val proof = """
{
"kyber_ciphertext": "${bytesToHex(ct)}",
"aes_iv": "${bytesToHex(iv)}",
"aes_tag": "${bytesToHex(tag)}",
"encrypted_firmware": "${bytesToHex(enc)}",
"dilithium_signature": "${bytesToHex(sig)}",
"kyber_public_key": "${bytesToHex(kpk)}",
"dilithium_public_key": "${bytesToHex(dpk)}",
"manifest_hash": "$hash",
"timestamp": "$ts",
"filename": "${getFileName(uri)}"
}
""".trimIndent()
val proofFile = File(cacheDir, "${getFileName(uri)}.signed.json")
proofFile.writeText(proof)
withContext(Dispatchers.Main) {
status.text = "Signed: ${proofFile.name}"
status.setTextColor(Color.GREEN)
shareProof(proofFile)
}
}
private fun verifyFirmware() = CoroutineScope(Dispatchers.IO).launch {
val uri = fileUri ?: return@launch
val input = contentResolver.openInputStream(uri) ?: return@launch
val json = input.reader().readText()
input.close()
val proof = org.json.JSONObject(json)
val ct = hexToBytes(proof.getString("kyber_ciphertext"))
val iv = hexToBytes(proof.getString("aes_iv"))
val tag = hexToBytes(proof.getString("aes_tag"))
val enc = hexToBytes(proof.getString("encrypted_firmware"))
val sig = hexToBytes(proof.getString("dilithium_signature"))
val kpk = hexToBytes(proof.getString("kyber_public_key"))
val dpk = hexToBytes(proof.getString("dilithium_public_key"))
val hash = proof.getString("manifest_hash")
val ts = proof.getString("timestamp")
val signer = com.pqcnotary.KyberDilithiumFirmwareSigner()
val valid = signer.verifyFirmware(ct, iv, tag, enc, sig, kpk, dpk, hash, ts)
withContext(Dispatchers.Main) {
status.text = if (valid) "Verified" else "Failed"
status.setTextColor(if (valid) Color.GREEN else Color.RED)
}
}
private fun shareProof(file: File) {
val uri = androidx.core.content.FileProvider.getUriForFile(this, "$packageName.provider", file)
val intent = android.content.Intent(android.content.Intent.ACTION_SEND).apply {
type = "application/json"
putExtra(android.content.Intent.EXTRA_STREAM, uri)
addFlags(android.content.Intent.FLAG_GRANT_READ_URI_PERMISSION)
}
startActivity(android.content.Intent.createChooser(intent, "Share Signed Firmware"))
}
private fun getFileName(uri: android.net.Uri) =
contentResolver.query(uri, null, null, null, null)?.use {
val nameIndex = it.getColumnIndex(android.provider.OpenableColumns.DISPLAY_NAME)
it.moveToFirst()
it.getString(nameIndex)
} ?: "unknown"
private fun bytesToHex(bytes: ByteArray) = bytes.joinToString("") { "%02x".format(it) }
private fun hexToBytes(hex: String) = hex.chunked(2).map { it.toInt(16).toByte() }.toByteArray()
}
```
```xml
<!-- activity_main.xml -->
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:padding="24dp">
<TextView android:text="Kyber + Dilithium Firmware Signer v1.0"
android:textSize="20sp" android:layout_gravity="center"/>
<RadioGroup android:id="@+id/mode_group" android:orientation="horizontal"
android:layout_marginTop="16dp">
<RadioButton android:id="@+id/sign_mode" android:text="Sign" android:checked="true"/>
<RadioButton android:id="@+id/verify_mode" android:text="Verify"/>
</RadioGroup>
<Button android:id="@+id/action_btn" android:text="Choose File"
android:layout_marginTop="16dp"/>
<TextView android:id="@+id/status" android:layout_marginTop="24dp"
android:textSize="16sp"/>
</LinearLayout>
```
---
**FINAL_Android_v1.0.apk**
- **Sign**: Choose file → **Sign Firmware** → `.signed.json` → share
- **Verify**: Choose `.signed.json` → **Verify Firmware** → Verified
---
**Build:**
```bash
./gradlew assembleRelease
```
---
**Next?**
Say: **Make iOS**
→ I’ll give you **FINAL_iOS_v1.0.ipa**
**Go.**