Is getrandom secure?

[Kevin Wang]

Dear All,

I've noticed that gramine emulates the getrandom syscall and /dev/random with RDRAND instraction. Does it mean that workloads can rely on getrandom to get true random number and no one in the middle can manipulate the result?

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Kevin Wang

Regards

[Michał Kowalczyk]

RDRAND is not a true random generator, but it's suitable for cryptographical purposes.

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