Version 1.3.1 - Switch to SecureLicenseClient with signature verification

- Upgraded from LicenseClient to SecureLicenseClient with HMAC-SHA256 response signature verification
- Added Server Secret configuration field for secure communication
- Added rate limit exception handling with retry time display
- Added signature verification error handling
- Added URL validation error handling (SSRF protection)
- Updated all translation files with new strings
- Compiled .mo files for all 7 language variants

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

languages/wc-tier-package-prices-de_CH.po

@@ -359,12 +359,33 @@ msgid "Permission denied."
 msgstr "Zugriff verweigert."
 
 #: includes/class-wc-tpp-settings.php
-msgid "License key and server URL are required."
-msgstr "Lizenzschlüssel und Server-URL sind erforderlich."
+msgid "Server Secret"
+msgstr "Server-Geheimnis"
 
 #: includes/class-wc-tpp-settings.php
-msgid "Please enter both license server URL and license key."
-msgstr "Bitte geben Sie sowohl die Lizenzserver-URL als auch den Lizenzschlüssel ein."
+msgid "The shared secret for secure communication with the license server."
+msgstr "Das gemeinsame Geheimnis für die sichere Kommunikation mit dem Lizenzserver."
+
+#: includes/class-wc-tpp-settings.php
+msgid "License key, server URL, and server secret are required."
+msgstr "Lizenzschlüssel, Server-URL und Server-Geheimnis sind erforderlich."
+
+#: includes/class-wc-tpp-settings.php
+#. translators: %d: Number of seconds to wait
+msgid "Rate limit exceeded. Please try again in %d seconds."
+msgstr "Anfragelimit überschritten. Bitte versuchen Sie es in %d Sekunden erneut."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Response signature verification failed. Please check your server secret."
+msgstr "Überprüfung der Antwortsignatur fehlgeschlagen. Bitte überprüfen Sie Ihr Server-Geheimnis."
+
+#: includes/class-wc-tpp-settings.php
+msgid "An unexpected error occurred. Please try again."
+msgstr "Ein unerwarteter Fehler ist aufgetreten. Bitte versuchen Sie es erneut."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Please enter license server URL, license key, and server secret."
+msgstr "Bitte geben Sie die Lizenzserver-URL, den Lizenzschlüssel und das Server-Geheimnis ein."
 
 #: includes/class-wc-tpp-settings.php
 msgid "Validation failed."

languages/wc-tier-package-prices-de_CH_informal.po

@@ -359,12 +359,33 @@ msgid "Permission denied."
 msgstr "Zugriff verweigert."
 
 #: includes/class-wc-tpp-settings.php
-msgid "License key and server URL are required."
-msgstr "Lizenzschlüssel und Server-URL sind erforderlich."
+msgid "Server Secret"
+msgstr "Server-Geheimnis"
 
 #: includes/class-wc-tpp-settings.php
-msgid "Please enter both license server URL and license key."
-msgstr "Bitte gib sowohl die Lizenzserver-URL als auch den Lizenzschlüssel ein."
+msgid "The shared secret for secure communication with the license server."
+msgstr "Das gemeinsame Geheimnis für die sichere Kommunikation mit dem Lizenzserver."
+
+#: includes/class-wc-tpp-settings.php
+msgid "License key, server URL, and server secret are required."
+msgstr "Lizenzschlüssel, Server-URL und Server-Geheimnis sind erforderlich."
+
+#: includes/class-wc-tpp-settings.php
+#. translators: %d: Number of seconds to wait
+msgid "Rate limit exceeded. Please try again in %d seconds."
+msgstr "Anfragelimit überschritten. Bitte versuche es in %d Sekunden erneut."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Response signature verification failed. Please check your server secret."
+msgstr "Überprüfung der Antwortsignatur fehlgeschlagen. Bitte überprüfe dein Server-Geheimnis."
+
+#: includes/class-wc-tpp-settings.php
+msgid "An unexpected error occurred. Please try again."
+msgstr "Ein unerwarteter Fehler ist aufgetreten. Bitte versuche es erneut."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Please enter license server URL, license key, and server secret."
+msgstr "Bitte gib die Lizenzserver-URL, den Lizenzschlüssel und das Server-Geheimnis ein."
 
 #: includes/class-wc-tpp-settings.php
 msgid "Validation failed."

languages/wc-tier-package-prices-de_DE.po

@@ -359,12 +359,33 @@ msgid "Permission denied."
 msgstr "Zugriff verweigert."
 
 #: includes/class-wc-tpp-settings.php
-msgid "License key and server URL are required."
-msgstr "Lizenzschlüssel und Server-URL sind erforderlich."
+msgid "Server Secret"
+msgstr "Server-Geheimnis"
 
 #: includes/class-wc-tpp-settings.php
-msgid "Please enter both license server URL and license key."
-msgstr "Bitte geben Sie sowohl die Lizenzserver-URL als auch den Lizenzschlüssel ein."
+msgid "The shared secret for secure communication with the license server."
+msgstr "Das gemeinsame Geheimnis für die sichere Kommunikation mit dem Lizenzserver."
+
+#: includes/class-wc-tpp-settings.php
+msgid "License key, server URL, and server secret are required."
+msgstr "Lizenzschlüssel, Server-URL und Server-Geheimnis sind erforderlich."
+
+#: includes/class-wc-tpp-settings.php
+#. translators: %d: Number of seconds to wait
+msgid "Rate limit exceeded. Please try again in %d seconds."
+msgstr "Anfragelimit überschritten. Bitte versuchen Sie es in %d Sekunden erneut."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Response signature verification failed. Please check your server secret."
+msgstr "Überprüfung der Antwortsignatur fehlgeschlagen. Bitte überprüfen Sie Ihr Server-Geheimnis."
+
+#: includes/class-wc-tpp-settings.php
+msgid "An unexpected error occurred. Please try again."
+msgstr "Ein unerwarteter Fehler ist aufgetreten. Bitte versuchen Sie es erneut."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Please enter license server URL, license key, and server secret."
+msgstr "Bitte geben Sie die Lizenzserver-URL, den Lizenzschlüssel und das Server-Geheimnis ein."
 
 #: includes/class-wc-tpp-settings.php
 msgid "Validation failed."

languages/wc-tier-package-prices-de_DE_informal.po

@@ -359,12 +359,33 @@ msgid "Permission denied."
 msgstr "Zugriff verweigert."
 
 #: includes/class-wc-tpp-settings.php
-msgid "License key and server URL are required."
-msgstr "Lizenzschlüssel und Server-URL sind erforderlich."
+msgid "Server Secret"
+msgstr "Server-Geheimnis"
 
 #: includes/class-wc-tpp-settings.php
-msgid "Please enter both license server URL and license key."
-msgstr "Bitte gib sowohl die Lizenzserver-URL als auch den Lizenzschlüssel ein."
+msgid "The shared secret for secure communication with the license server."
+msgstr "Das gemeinsame Geheimnis für die sichere Kommunikation mit dem Lizenzserver."
+
+#: includes/class-wc-tpp-settings.php
+msgid "License key, server URL, and server secret are required."
+msgstr "Lizenzschlüssel, Server-URL und Server-Geheimnis sind erforderlich."
+
+#: includes/class-wc-tpp-settings.php
+#. translators: %d: Number of seconds to wait
+msgid "Rate limit exceeded. Please try again in %d seconds."
+msgstr "Anfragelimit überschritten. Bitte versuche es in %d Sekunden erneut."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Response signature verification failed. Please check your server secret."
+msgstr "Überprüfung der Antwortsignatur fehlgeschlagen. Bitte überprüfe dein Server-Geheimnis."
+
+#: includes/class-wc-tpp-settings.php
+msgid "An unexpected error occurred. Please try again."
+msgstr "Ein unerwarteter Fehler ist aufgetreten. Bitte versuche es erneut."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Please enter license server URL, license key, and server secret."
+msgstr "Bitte gib die Lizenzserver-URL, den Lizenzschlüssel und das Server-Geheimnis ein."
 
 #: includes/class-wc-tpp-settings.php
 msgid "Validation failed."

languages/wc-tier-package-prices-en_US.po

@@ -359,12 +359,33 @@ msgid "Permission denied."
 msgstr "Permission denied."
 
 #: includes/class-wc-tpp-settings.php
-msgid "License key and server URL are required."
-msgstr "License key and server URL are required."
+msgid "Server Secret"
+msgstr "Server Secret"
 
 #: includes/class-wc-tpp-settings.php
-msgid "Please enter both license server URL and license key."
-msgstr "Please enter both license server URL and license key."
+msgid "The shared secret for secure communication with the license server."
+msgstr "The shared secret for secure communication with the license server."
+
+#: includes/class-wc-tpp-settings.php
+msgid "License key, server URL, and server secret are required."
+msgstr "License key, server URL, and server secret are required."
+
+#: includes/class-wc-tpp-settings.php
+#. translators: %d: Number of seconds to wait
+msgid "Rate limit exceeded. Please try again in %d seconds."
+msgstr "Rate limit exceeded. Please try again in %d seconds."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Response signature verification failed. Please check your server secret."
+msgstr "Response signature verification failed. Please check your server secret."
+
+#: includes/class-wc-tpp-settings.php
+msgid "An unexpected error occurred. Please try again."
+msgstr "An unexpected error occurred. Please try again."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Please enter license server URL, license key, and server secret."
+msgstr "Please enter license server URL, license key, and server secret."
 
 #: includes/class-wc-tpp-settings.php
 msgid "Validation failed."

languages/wc-tier-package-prices-fr_CH.po

@@ -359,12 +359,33 @@ msgid "Permission denied."
 msgstr "Accès refusé."
 
 #: includes/class-wc-tpp-settings.php
-msgid "License key and server URL are required."
-msgstr "La clé de licence et l'URL du serveur sont requises."
+msgid "Server Secret"
+msgstr "Secret serveur"
 
 #: includes/class-wc-tpp-settings.php
-msgid "Please enter both license server URL and license key."
-msgstr "Veuillez entrer l'URL du serveur de licence et la clé de licence."
+msgid "The shared secret for secure communication with the license server."
+msgstr "Le secret partagé pour la communication sécurisée avec le serveur de licence."
+
+#: includes/class-wc-tpp-settings.php
+msgid "License key, server URL, and server secret are required."
+msgstr "La clé de licence, l'URL du serveur et le secret serveur sont requis."
+
+#: includes/class-wc-tpp-settings.php
+#. translators: %d: Number of seconds to wait
+msgid "Rate limit exceeded. Please try again in %d seconds."
+msgstr "Limite de requêtes dépassée. Veuillez réessayer dans %d secondes."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Response signature verification failed. Please check your server secret."
+msgstr "La vérification de la signature a échoué. Veuillez vérifier votre secret serveur."
+
+#: includes/class-wc-tpp-settings.php
+msgid "An unexpected error occurred. Please try again."
+msgstr "Une erreur inattendue s'est produite. Veuillez réessayer."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Please enter license server URL, license key, and server secret."
+msgstr "Veuillez entrer l'URL du serveur de licence, la clé de licence et le secret serveur."
 
 #: includes/class-wc-tpp-settings.php
 msgid "Validation failed."

languages/wc-tier-package-prices-it_CH.po

@@ -359,12 +359,33 @@ msgid "Permission denied."
 msgstr "Accesso negato."
 
 #: includes/class-wc-tpp-settings.php
-msgid "License key and server URL are required."
-msgstr "La chiave di licenza e l'URL del server sono obbligatori."
+msgid "Server Secret"
+msgstr "Segreto del server"
 
 #: includes/class-wc-tpp-settings.php
-msgid "Please enter both license server URL and license key."
-msgstr "Inserisci sia l'URL del server di licenza che la chiave di licenza."
+msgid "The shared secret for secure communication with the license server."
+msgstr "Il segreto condiviso per la comunicazione sicura con il server di licenza."
+
+#: includes/class-wc-tpp-settings.php
+msgid "License key, server URL, and server secret are required."
+msgstr "La chiave di licenza, l'URL del server e il segreto del server sono obbligatori."
+
+#: includes/class-wc-tpp-settings.php
+#. translators: %d: Number of seconds to wait
+msgid "Rate limit exceeded. Please try again in %d seconds."
+msgstr "Limite di richieste superato. Per favore riprova tra %d secondi."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Response signature verification failed. Please check your server secret."
+msgstr "Verifica della firma della risposta fallita. Per favore controlla il tuo segreto del server."
+
+#: includes/class-wc-tpp-settings.php
+msgid "An unexpected error occurred. Please try again."
+msgstr "Si è verificato un errore imprevisto. Per favore riprova."
+
+#: includes/class-wc-tpp-settings.php
+msgid "Please enter license server URL, license key, and server secret."
+msgstr "Inserisci l'URL del server di licenza, la chiave di licenza e il segreto del server."
 
 #: includes/class-wc-tpp-settings.php
 msgid "Validation failed."

languages/wc-tier-package-prices.pot

@@ -2,9 +2,9 @@
 # This file is distributed under the GPL v2 or later.
 msgid ""
 msgstr ""
-"Project-Id-Version: WooCommerce Tier and Package Prices 1.2.7\n"
+"Project-Id-Version: WooCommerce Tier and Package Prices 1.3.1\n"
 "Report-Msgid-Bugs-To: https://src.bundespruefstelle.ch/wc-tier-package-prices\n"
-"POT-Creation-Date: 2025-12-30 00:00+0000\n"
+"POT-Creation-Date: 2026-01-27 00:00+0000\n"
 "MIME-Version: 1.0\n"
 "Content-Type: text/plain; charset=UTF-8\n"
 "Content-Transfer-Encoding: 8bit\n"
@@ -332,11 +332,32 @@ msgid "Permission denied."
 msgstr ""
 
 #: includes/class-wc-tpp-settings.php
-msgid "License key and server URL are required."
+msgid "Server Secret"
 msgstr ""
 
 #: includes/class-wc-tpp-settings.php
-msgid "Please enter both license server URL and license key."
+msgid "The shared secret for secure communication with the license server."
+msgstr ""
+
+#: includes/class-wc-tpp-settings.php
+msgid "License key, server URL, and server secret are required."
+msgstr ""
+
+#: includes/class-wc-tpp-settings.php
+#. translators: %d: Number of seconds to wait
+msgid "Rate limit exceeded. Please try again in %d seconds."
+msgstr ""
+
+#: includes/class-wc-tpp-settings.php
+msgid "Response signature verification failed. Please check your server secret."
+msgstr ""
+
+#: includes/class-wc-tpp-settings.php
+msgid "An unexpected error occurred. Please try again."
+msgstr ""
+
+#: includes/class-wc-tpp-settings.php
+msgid "Please enter license server URL, license key, and server secret."
 msgstr ""
 
 #: includes/class-wc-tpp-settings.php