Updated on 2026-08-14

tangem-core/src/main/java/com/tangem/CardEnvironment.kt

@@ -10,7 +10,8 @@ data class CardEnvironment(
         val pin2: String = DEFAULT_PIN2,
         val cardId: String? = null,
         val terminalKeys: KeyPair? = null,
-        val encryptionKey: ByteArray? = null
+        val encryptionKey: ByteArray? = null,
+        val cvc: ByteArray? = null
 ) {
 
     companion object {

tangem-core/src/main/java/com/tangem/CardManager.kt

@@ -137,6 +137,9 @@ class CardManager(
     fun createWallet(cardId: String,
                      cvc: ByteArray? = null,
                      callback: (result: TaskEvent<CreateWalletResponse>) -> Unit) {
+
+        if (cvc != null) cardEnvironmentRepository[cardId] = fetchCardEnvironment(cardId).copy(cvc = cvc)
+
         val createWalletCommand = CreateWalletCommand(cardId)
         val task = SingleCommandTask(createWalletCommand)
         runTask(task, cardId, callback)

tangem-core/src/main/java/com/tangem/commands/CreateWalletCommand.kt

@@ -36,11 +36,9 @@ class CreateWalletResponse(
  * RemainingSignature is set to MaxSignatures.
  *
  * @property cardId CID, Unique Tangem card ID number.
- * @property cvc Optional 3-digit code printed on the card. Required if Use_CVC flag is set in Settings_Mask.
  */
 class CreateWalletCommand(
-        private val cardId: String,
-        private val cvc: ByteArray? = null
+        private val cardId: String
 ) : CommandSerializer<CreateWalletResponse>() {
 
     override fun serialize(cardEnvironment: CardEnvironment): CommandApdu {
@@ -49,8 +47,8 @@ class CreateWalletCommand(
                 Tlv(TlvTag.CardId, cardId.hexToBytes()),
                 Tlv(TlvTag.Pin2, cardEnvironment.pin2.calculateSha256())
         )
-        if (cvc != null) {
-            tlvData.add(Tlv(TlvTag.Cvc, cvc))
+        if (cardEnvironment.cvc != null) {
+            tlvData.add(Tlv(TlvTag.Cvc, cardEnvironment.cvc))
         }
 
         return CommandApdu(Instruction.CreateWallet, tlvData)

tangem-core/src/main/java/com/tangem/commands/PurgeWalletCommand.kt

@@ -28,7 +28,6 @@ class PurgeWalletResponse(
  * If Is_Reusable flag is disabled, the card switches to ‘Purged’ state.
  * ‘Purged’ state is final, it makes the card useless.
  * @property cardId CID, Unique Tangem card ID number.
- * @property cvc Optional 3-digit code printed on the card. Required if Use_CVC flag is set in Settings_Mask.
  */
 class PurgeWalletCommand(
         private val cardId: String