WIP

pgpainless-core/src/main/kotlin/org/gnupg/GnuPGDummyKeyUtil.kt

@@ -56,6 +56,12 @@ class GnuPGDummyKeyUtil private constructor() {
          * @return builder
          */
         @JvmStatic fun modify(secretKeys: PGPSecretKeyRing) = Builder(secretKeys)
+
+        @JvmStatic fun serialToBytes(sn: Int) = byteArrayOf(
+            (sn shr 24).toByte(),
+            (sn shr(16)).toByte(),
+            (sn shr(8)).toByte(),
+            sn.toByte())
     }
 
     class Builder(private val keys: PGPSecretKeyRing) {

pgpainless-core/src/main/kotlin/org/pgpainless/PGPainless.kt

@@ -27,6 +27,7 @@ import org.pgpainless.bouncycastle.PolicyAdapter
 import org.pgpainless.bouncycastle.extensions.setAlgorithmSuite
 import org.pgpainless.decryption_verification.DecryptionBuilder
 import org.pgpainless.encryption_signing.EncryptionBuilder
+import org.pgpainless.hardware.HardwareTokenBackend
 import org.pgpainless.key.certification.CertifyCertificate
 import org.pgpainless.key.generation.KeyRingBuilder
 import org.pgpainless.key.generation.KeyRingTemplates
@@ -52,6 +53,8 @@ class PGPainless(
     val algorithmPolicy: Policy = Policy()
 ) {
 
+    val hardwareTokenBackends = mutableListOf<HardwareTokenBackend>()
+
     constructor(
         algorithmPolicy: Policy
     ) : this(OpenPGPImplementation.getInstance(), algorithmPolicy)

pgpainless-core/src/main/kotlin/org/pgpainless/exception/KeyException.kt

@@ -209,4 +209,8 @@ $algorithm of size $bitSize is not acceptable.""",
             }
         }
     }
+
+    class GeneralKeyException(message: String,
+                              fingerprint: OpenPgpFingerprint
+    ) : KeyException(message, fingerprint)
 }

pgpainless-core/src/main/kotlin/org/pgpainless/hardware/HardwareTokenBackend.kt

@@ -0,0 +1,7 @@
+package org.pgpainless.hardware
+
+interface HardwareTokenBackend {
+    fun listDeviceSerials(): List<ByteArray>
+
+    fun listKeyFingerprints(): Map<ByteArray, List<ByteArray>>
+}