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Calendar Lock PEA is a self-decrypting archive for showing and modifying encrypted desktop calendars. The program offers a daily, weekly and monthly view and support many cloud providers. The shown calendars are never stored unencrypted on your disk or in the cloud, but exist as plain text only in the memory (RAM). Calendar Lock PEA is compatible with many iCalendar applications, platform independent and Open Source. No installation or registration is required, only a Java Runtime Environment. Calendar Lock PEA uses authenticated encryption (EAX mode) and a memory-hard key derivation function (Catena) to prevent against custom-hardware attacks and tries to protect your privacy as much as possible.