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zx_cprng_draw

NAME

Draw from the kernel's CPRNG.

SYNOPSIS

#include <zircon/syscalls.h>

void zx_cprng_draw(void* buffer, size_t buffer_size);

DESCRIPTION

zx_cprng_draw() draws random bytes from the kernel CPRNG. This data should be suitable for cryptographic applications.

Clients that require a large volume of randomness should consider using these bytes to seed a user-space random number generator for better performance.

RIGHTS

TODO(fxbug.dev/32253)

NOTES

zx_cprng_draw() triggers terminates the calling process if buffer is not a valid userspace pointer.

There are no other error conditions. If its arguments are valid, zx_cprng_draw() will succeed.

SEE ALSO