clover · mtomko-clover · Sep 9, 2026
diff --git a/README_device_attestation.md b/README_device_attestation.md
@@ -0,0 +1,132 @@
+Device attestation
+===
+The Device Attestation SDK creates an _attestation_—a message signed with the Clover device private key. This is used to assert a set of truths about the device or the system state, such that the integrity and authenticity of the message are cryptographically guaranteed by the Clover hardware.
+
+# Create a signed message
+```
+val userTruths = mapOf(
+    "nonce" to theNonce,
+    "accountId" to theAccountId,
+    ...,
+)
+
+// Generate with certificate chain in JWS header
+val response = DeviceAttestationClient(context).sign(userTruths, CertificateReference.CERTIFICATE)
+// OR
+// Generate with SHA-256 certificate thumbprint reference
+val response = DeviceAttestationClient(context).sign(userTruths, CertificateReference.THUMBPRINT)
+```
+`message` is a [Java Web Signature](https://datatracker.ietf.org/doc/html/rfc7515) (JWS) [compact serialization](https://datatracker.ietf.org/doc/html/rfc7515#page-7). JWS is fairly simple, but if you are not comfortable with the specification, there are multiple robust client libraries:
+- **Node.js / TypeScript**: jose (https://www.npmjs.com/package/jose) or jsonwebtoken (https://www.npmjs.com/package/jsonwebtoken)
+- **Python**: PyJWT (https://pyjwt.readthedocs.io/) or authlib (https://authlib.org/)
+- **Java / Kotlin**: nimbus-jose-jwt (https://connect2id.com/products/nimbus-jose-jwt) or okta-jwt-verifier (https://github.com/okta/okta-jwt-verifier-java)
+- **Go**: go-jose (https://github.com/go-jose/go-jose)
+- **C# / .NET**: System.IdentityModel.Tokens.Jwt (https://www.nuget.org/packages/System.IdentityModel.Tokens.Jwt/)
+
+The following sections describe what to expect in a Clover device attestation JWS compact serialization. Refer to the JWS specification for details.
+
+## Header
+The JWS header contains _either_:
+- `x5c`: The Clover device intermediate certificate chain (default, or when `CertificateReference.CERTIFICATE` is used in signing).
+- `x5t#S256`: The base64, url-encoded SHA-256 certificate thumbprint reference (when `CertificateReference.THUMBPRINT` is used in signing).
+
+When invoking `DeviceAttestationClient.sign`, an optional `CertificateReference` can be supplied. This is either:
+- `CertificateReference.CERTIFICATE`: The entire intermediate certificate chain is encoded in the JWS header, in the `x5c` field.
+- `CertificateReference.THUMBPRINT`: A SHA-256 hash of the leaf certificate is encoded in the JWS header, in the `x5t#256` field.
+
+`CERTIFICATE` generates a larger message (roughly ~5k bytes, plus encoded payload length), but it is completely self-contained, and can be verified completely offline.
+
+`THUMBPRINT` generates a smaller message (roughly 800 bytes, plus encoded payload length). However, the verifier must obtain, or otherwise have access to, the intermediate certificate chain. The verifier must verify that the thumbprint (hash) in the JWS header matches the hash of the actual SHA-256 leaf certificate (in addition to verifying the signature, and validating the certificate chain).
+
+## Payload
+JWS does not define a payload format. Clover uses a well-defined JSON object that defines *device* and *user truths*.
+```
+{
+  "deviceTruths": {
+    "timestamp": "2026-06-16T21:12:36Z",
+    "clover_id": "GARENZRPEFZ6E",
+    "serial": "C051UQ03660028",
+    "mid": "12345678901",
+    "is_prod": "false"
+  },
+  "userTruths": {
+    "nonce": "c2519b9f-a8bd-459d-bcda-4fba2a014d65",
+    "accountId": "16433789684660082549"
+  }
+}
+```
+
+### Device truths
+Device truths are attestations made about the signing device, by the signing device.
+
+- `timestamp`: The time the attestation was signed.
+- `clover_id`: The Clover merchant UUID.
+- `serial`: The Clover device serial number.
+- `mid`: The merchant identifier (must not be confused with the merchant UUID).
+- `is_prod`: A flag indicating if the message was signed on a production, or otherwise development, Clover device. This must be used to select the correct device root, to complete message verification.
+
+The set of device truths is fixed; these same device truth keys exist in all signed messages.
+
+### User truths
+User truths are attestations made by the caller about the device's relationship with their software. While not required, it is recommended that this at least contain a server-generated [cryptographic nonce](https://en.wikipedia.org/wiki/Cryptographic_nonce) that can be authenticated at verification time. It might also contain things like user or account IDs.
+
+## Signature
+Per the JWS specification, the signature signs the header and payload.
+
+# Verify a signed message
+To verify a message:
+1. Decode the JWS compact serialization.
+2. Verify the cryptographic signature.
+3. Verify that the certificate chain chains to either the development or production device Clover root certificate.
+
+If `THUMBPRINT` mode is used, the verifier must first retrieve and match the intermediate certificate chain before performing signature and path validation.
+
+A Kotlin and Python samples demonstrating verification is provided. See "Samples" below.
+
+The device production and development root certificate, in PEM format, can be found at:
+- `certs/device_root_prod.pem` (use with production Clover devices)
+- `certs/device_root_dev.pem` (use with development Clover devices)
+- `certs/device_root_dev_legacy.pem` (use with older development Clover devices)
+
+Because there are two development root certificates, you may have to write your code to attempt verification with each.
+
+respectively.
+
+> [!IMPORTANT]
+> Some older, primarily development devices, may have expired intermediate certificates. This does not affect the operation of the device, or the authenticity of the signature.  
+
+# Rate limiting
+Callers are limited to 24 signing requests per day (24 invocations of `DeviceAttestationClient.sign`).
+
+# Samples
+To demonstrate message signing and verification, run the Clover Android SDK Examples application, and select "Device attestation test". Find the functions `DeviceAttestationViewModel::sign` and `::verify`. Of course the signer and verifier will never be the same entity, outside sample code. 
+
+Two python samples can be found in `clover-android-sdk-examples/scripts/`:
+- `verify_device_attestation.py`: Manual parse and decode the JWS compact serialization, and manual cryptographic verification.
+- `jwt_verify_device_attestation.py`: Uses the [PyJWT](https://pyjwt.readthedocs.io/en/stable/) Python module to do the same.
+
+To use them, first generate a signed message using the "Device attestation test" screen in the Clover Android SDK Examples app on the device. In the device's log, look for messages like:
+```
+06-16 15:41:14.030  9492  9492 I device_attestation: Wrote attestation: /storage/emulated/0/Android/data/com.clover.android.sdk.examples/cache/attestation.jws
+06-16 15:41:14.035  9492  9492 I device_attestation: Wrote device certificates: /storage/emulated/0/Android/data/com.clover.android.sdk.examples/cache/device_certs.pem
+```
+Pull these files from the device to your host PC:
+```
+adb pull /storage/emulated/0/Android/data/com.clover.android.sdk.examples/cache/attestation.jws
+adb pull /storage/emulated/0/Android/data/com.clover.android.sdk.examples/cache/device_certs.pem
+```
+and run either Python script to verify it.
+
+For messages generated with a `CERTIFICATE` certificate reference:
+```
+clover-android-sdk-examples/scripts/verify_device_attestation.py --jws attestation.jws --root device_root.pem
+# OR
+clover-android-sdk-examples/scripts/jwt_verify_device_attestation.py --jws attestation.jws --root device_root.pem
+```
+
+For messages generated with a `THUMBPRINT` certificate reference:
+```
+clover-android-sdk-examples/scripts/verify_device_attestation.py --jws attestation.jws --root device_root.pem --certs device_certs.pem
+# OR
+clover-android-sdk-examples/scripts/jwt_verify_device_attestation.py --jws attestation.jws --root device_root.pem --certs device_certs.pem
+```
diff --git a/build.gradle b/build.gradle
@@ -82,15 +82,15 @@ subprojects {
           remoteLineSuffix.set("#L")
         }
         externalDocumentationLink {
-          url.set(new URL("https://square.github.io/retrofit/2.x/retrofit/"))
+          url.set(new URL("https://javadoc.io/doc/com.squareup.retrofit2/retrofit/2.12.0/"))
         }
         externalDocumentationLink {
-          url.set(new URL("https://square.github.io/okhttp/3.x/okhttp/"))
+          url.set(new URL("https://javadoc.io/doc/com.squareup.okhttp3/okhttp/3.12.13/"))
         }
         if(project.name == "clover-android-sdk") includes.from("overview.md")
 
         perPackageOption {
-          matchingRegex.set("com.clover.sdk.internal.*")
+          matchingRegex.set('com\\.clover\\.sdk(\\..*)?\\.internal(\\..*)?')
           suppress.set(true)
         }
       }

diff --git a/certs/device_root_dev.pem b/certs/device_root_dev.pem
@@ -0,0 +1,21 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/certs/device_root_dev_legacy.pem b/certs/device_root_dev_legacy.pem
@@ -0,0 +1,20 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/certs/device_root_prod.pem b/certs/device_root_prod.pem
@@ -0,0 +1,24 @@
+-----BEGIN CERTIFICATE-----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+-----END CERTIFICATE-----
diff --git a/clover-android-connector-sdk/build.gradle b/clover-android-connector-sdk/build.gradle
@@ -16,7 +16,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
  * limitations under the License.
  */
 group = 'com.clover.sdk'
-version = '334'
+version = '340'
 
 
 apply from: file("${project.rootDir}/lib.gradle")

diff --git a/clover-android-connector-sdk/src/main/res/values-de-rDE/strings.xml b/clover-android-connector-sdk/src/main/res/values-de-rDE/strings.xml
@@ -1,4 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
+  <string name="sdkName">com.clover.connector.sdk.v3.PaymentConnector</string>
+  <string name="sdkVersion">3.0.0</string>
   <string name="default_manual_line_item_name">Manuelle Transaktion</string>
   <string name="authorization_line_item_name">Autorisierung</string>
-</resources>
+</resources>
diff --git a/clover-android-connector-sdk/src/main/res/values-en-rCA/strings.xml b/clover-android-connector-sdk/src/main/res/values-en-rCA/strings.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <string name="sdkName">com.clover.connector.sdk.v3.PaymentConnector</string>
+  <string name="sdkVersion">3.0.0</string>
+  <string name="default_manual_line_item_name">Manual Transaction</string>
+  <string name="authorization_line_item_name">Authorization</string>
+</resources>
diff --git a/clover-android-connector-sdk/src/main/res/values-en-rGB/strings.xml b/clover-android-connector-sdk/src/main/res/values-en-rGB/strings.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <string name="sdkName">com.clover.connector.sdk.v3.PaymentConnector</string>
+  <string name="sdkVersion">3.0.0</string>
+  <string name="default_manual_line_item_name">Manual Transaction</string>
+  <string name="authorization_line_item_name">Authorisation</string>
+</resources>
diff --git a/clover-android-connector-sdk/src/main/res/values-en-rIE/strings.xml b/clover-android-connector-sdk/src/main/res/values-en-rIE/strings.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <string name="sdkName">com.clover.connector.sdk.v3.PaymentConnector</string>
+  <string name="sdkVersion">3.0.0</string>
+  <string name="default_manual_line_item_name">Manual Transaction</string>
+  <string name="authorization_line_item_name">Authorisation</string>
+</resources>
diff --git a/clover-android-connector-sdk/src/main/res/values-fr-rCA/strings.xml b/clover-android-connector-sdk/src/main/res/values-fr-rCA/strings.xml
@@ -1,5 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-  <string name="default_manual_line_item_name">Transaction manuelle</string>
-  <string name="authorization_line_item_name">Autorisation</string>
-</resources>
+    <string name="sdkName">com.clover.connector.sdk.v3.PaymentConnector</string>
+    <string name="sdkVersion">3.0.0</string>
+    <string name="default_manual_line_item_name">Transaction manuelle</string>
+    <string name="authorization_line_item_name">Autorisation</string>
+</resources>
diff --git a/clover-android-connector-sdk/src/main/res/values-ja-rJP/strings.xml b/clover-android-connector-sdk/src/main/res/values-ja-rJP/strings.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <string name="sdkName">com.clover.connector.sdk.v3.PaymentConnector</string>
+  <string name="sdkVersion">3.0.0</string>
+  <string name="default_manual_line_item_name">直接入力決済</string>
+  <string name="authorization_line_item_name">オーソリ</string>
+</resources>
diff --git a/clover-android-connector-sdk/src/main/res/values-nl-rNL/strings.xml b/clover-android-connector-sdk/src/main/res/values-nl-rNL/strings.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+  <string name="sdkName">com.clover.connector.sdk.v3.PaymentConnector</string>
+  <string name="sdkVersion">3.0.0</string>
+  <string name="default_manual_line_item_name">Handmatige transactie</string>
+  <string name="authorization_line_item_name">Autorisatie</string>
+</resources>
diff --git a/clover-android-connector-sdk/src/main/res/values-pt-rBR/strings.xml b/clover-android-connector-sdk/src/main/res/values-pt-rBR/strings.xml
@@ -1,5 +1,7 @@
-<?xml version="1.0" encoding="utf-8"?>
+<?xml version="1.0" encoding="utf-8"?>
 <resources>
+  <string name="sdkName">com.clover.connector.sdk.v3.PaymentConnector</string>
+  <string name="sdkVersion">3.0.0</string>
   <string name="default_manual_line_item_name">Transação manual</string>
   <string name="authorization_line_item_name">Autorização</string>
-</resources>
+</resources>
diff --git a/clover-android-connector-sdk/src/main/res/values/strings.xml b/clover-android-connector-sdk/src/main/res/values/strings.xml
@@ -15,8 +15,9 @@
   ~ limitations under the License.
   -->
 
+<!-- smartling.instruction_attributes = comment -->
 <resources>
   <string name="sdkName">com.clover.connector.sdk.v3.PaymentConnector</string>
   <string name="sdkVersion">3.0.0</string>
-  <string name="default_manual_line_item_name">Manual Transaction</string>
-  <string name="authorization_line_item_name">Authorization</string></resources>
+  <string name="default_manual_line_item_name" comment="Location: CreateOrUpdateOrderTask.java. Purpose: Default name for a line item in a manually created order.">Manual Transaction</string>
+  <string name="authorization_line_item_name" comment="Location: CreateOrUpdateOrderTask.java. Purpose: The line item name used when the transaction type is an authorization, for web receipt generation.">Authorization</string></resources>
diff --git a/clover-android-loyalty-kit/build.gradle b/clover-android-loyalty-kit/build.gradle
@@ -16,7 +16,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
  * limitations under the License.
  */
 group = 'com.clover.sdk'
-version = '334'
+version = '340'
 
 
 apply from: file("${project.rootDir}/lib.gradle")

diff --git a/clover-android-sdk-examples/build.gradle b/clover-android-sdk-examples/build.gradle
@@ -16,7 +16,7 @@ import org.jetbrains.kotlin.gradle.tasks.KotlinCompile
  * limitations under the License.
  */
 group = 'com.clover.sdk'
-version = '334'
+version = '340'
 
 apply from: file("${project.rootDir}/app.gradle")
 apply plugin: 'kotlin-android'
@@ -92,6 +92,7 @@ dependencies {
   implementation "androidx.activity:activity-ktx:$ANDROIDX_ACTIVITY_VERSION"
   implementation "com.google.code.gson:gson:$GSON_VERSION"
   implementation "androidx.constraintlayout:constraintlayout:$ANDROIDX_CONSTRAINTLAYOUT_VERSION"
+  implementation "com.squareup.okhttp3:okhttp:$OKHTTP_VERSION"
 
   def room_version = "2.6.1"
   implementation("androidx.room:room-common:$room_version")