From 4e2c7b2b070699b9f0a9cfe75de8316866cc5ed1 Mon Sep 17 00:00:00 2001 From: Uros Majstorovic Date: Thu, 31 Mar 2022 13:17:48 +0200 Subject: random numbers for fe310 --- fw/fe310/eos/rng.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 fw/fe310/eos/rng.c (limited to 'fw/fe310/eos/rng.c') diff --git a/fw/fe310/eos/rng.c b/fw/fe310/eos/rng.c new file mode 100644 index 0000000..317941d --- /dev/null +++ b/fw/fe310/eos/rng.c @@ -0,0 +1,27 @@ +#include +#include +#include + +#include "net.h" + +int getentropy(unsigned char *b, size_t sz) { + unsigned char type; + unsigned char *buffer; + uint16_t len; + int rv; + + buffer = eos_net_alloc(); + + type = EOS_NET_MTYPE_RNG; + len = sizeof(uint16_t); + buffer[0] = sz >> 8; + buffer[1] = sz; + + rv = eos_net_xchg(&type, buffer, &len); + if (rv || (len != sz)) rv = -1; + + if (!rv) memcpy(b, buffer, sz); + eos_net_free(buffer, 1); + + return rv; +} -- cgit v1.2.3