I'm starting a project with STM32F103VB ARM base MCU. How could I Read 96 bit unique ID and manipulate in my software for security and make unique MCU based software.
You don't have _any_ idea at all?
What about just store 96 bits somewhere at a fixed location in the flash? Or use 1-wire interface to a Dallas/Maxim serial-number chip? Or maybe use a SPI serial-number chip?
Why start your project with seeing problems? Why not start by seeing possibilities? A developer is expected to develop, which requires you to be inventive.
printf("STM32F1 %08X-%08X-%08X UNIQUE\r\n", *((unsigned long *)0x1FFFF7E8), *((unsigned long *)0x1FFFF7EC), *((unsigned long *)0x1FFFF7F0) );
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