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Code Issues Packages Projects Releases Wiki Activity

perf(android): cache device identity and speed hex encoding

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This commit is contained in:
Ayaan Zaidi
2026-02-25 20:44:46 +05:30
committed by Ayaan Zaidi
parent 00fc1f56f1
commit 8d68199793
1 changed files with 12 additions and 20 deletions
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32
apps/android/app/src/main/java/ai/openclaw/android/gateway/DeviceIdentityStore.kt
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@@ -3,11 +3,7 @@ package ai.openclaw.android.gateway
import android.content.Context import android.content.Context
import android.util.Base64 import android.util.Base64
import java.io.File import java.io.File
import java.security.KeyFactory
import java.security.KeyPairGenerator
import java.security.MessageDigest import java.security.MessageDigest
import java.security.Signature
import java.security.spec.PKCS8EncodedKeySpec
import kotlinx.serialization.Serializable import kotlinx.serialization.Serializable
import kotlinx.serialization.json.Json import kotlinx.serialization.json.Json
@@ -22,21 +18,26 @@ data class DeviceIdentity(
class DeviceIdentityStore(context: Context) { class DeviceIdentityStore(context: Context) {
private val json = Json { ignoreUnknownKeys = true } private val json = Json { ignoreUnknownKeys = true }
private val identityFile = File(context.filesDir, "openclaw/identity/device.json") private val identityFile = File(context.filesDir, "openclaw/identity/device.json")
@Volatile private var cachedIdentity: DeviceIdentity? = null
@Synchronized @Synchronized
fun loadOrCreate(): DeviceIdentity { fun loadOrCreate(): DeviceIdentity {
cachedIdentity?.let { return it }
val existing = load() val existing = load()
if (existing != null) { if (existing != null) {
val derived = deriveDeviceId(existing.publicKeyRawBase64) val derived = deriveDeviceId(existing.publicKeyRawBase64)
if (derived != null && derived != existing.deviceId) { if (derived != null && derived != existing.deviceId) {
val updated = existing.copy(deviceId = derived) val updated = existing.copy(deviceId = derived)
save(updated) save(updated)
cachedIdentity = updated
return updated return updated
} }
cachedIdentity = existing
return existing return existing
} }
val fresh = generate() val fresh = generate()
save(fresh) save(fresh)
cachedIdentity = fresh
return fresh return fresh
} }
@@ -151,22 +152,16 @@ class DeviceIdentityStore(context: Context) {
} }
} }
private fun stripSpkiPrefix(spki: ByteArray): ByteArray {
if (spki.size == ED25519_SPKI_PREFIX.size + 32 &&
spki.copyOfRange(0, ED25519_SPKI_PREFIX.size).contentEquals(ED25519_SPKI_PREFIX)
) {
return spki.copyOfRange(ED25519_SPKI_PREFIX.size, spki.size)
}
return spki
}
private fun sha256Hex(data: ByteArray): String { private fun sha256Hex(data: ByteArray): String {
val digest = MessageDigest.getInstance("SHA-256").digest(data) val digest = MessageDigest.getInstance("SHA-256").digest(data)
val out = StringBuilder(digest.size * 2) val out = CharArray(digest.size * 2)
var i = 0
for (byte in digest) { for (byte in digest) {
out.append(String.format("%02x", byte)) val v = byte.toInt() and 0xff
out[i++] = HEX[v ushr 4]
out[i++] = HEX[v and 0x0f]
} }
return out.toString() return String(out)
} }
private fun base64UrlEncode(data: ByteArray): String { private fun base64UrlEncode(data: ByteArray): String {
@@ -174,9 +169,6 @@ class DeviceIdentityStore(context: Context) {
} }
companion object { companion object {
private val ED25519_SPKI_PREFIX = private val HEX = "0123456789abcdef".toCharArray()
byteArrayOf(
0x30, 0x2a, 0x30, 0x05, 0x06, 0x03, 0x2b, 0x65, 0x70, 0x03, 0x21, 0x00,
)
} }
} }