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Code Issues Releases Wiki Activity

properly initialize rng

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This commit is contained in:
Pavol Rusnak 2013-08-21 01:31:24 +02:00
parent ee09a6a7b2
commit 0ed5bea0d0
3 changed files with 12 additions and 2 deletions
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7
speed-stm32/.gitignore vendored Normal file
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@ -0,0 +1,7 @@
*.o
*.d
*.bin
*.hex
*.srec
*.list
*.elf

1
speed-stm32/rand.c
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@ -2,6 +2,7 @@
#include "rand.h"
void init_rand(void) {
RNG_CR |= RNG_CR_IE | RNG_CR_RNGEN;
}
uint32_t random32(void) {

6
speed-stm32/speed.c
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@ -213,8 +213,8 @@ void test_sign(void)
priv_key[i] = random32() & 0xFF;
}
// use our ECDSA signer to sign the message with the key
for (i = 0; i < 100; i++) {
// use our ECDSA signer 10 times to sign the message with the key
for (i = 0; i < 10; i++) {
ecdsa_sign(priv_key, msg, msg_len, sig, &sig_len);
}
}
@ -258,6 +258,8 @@ int main(void)
rcc_peripheral_enable_clock(&RCC_AHB1ENR, RCC_AHB1ENR_IOPAEN);
rcc_peripheral_enable_clock(&RCC_AHB2ENR, RCC_AHB2ENR_OTGFSEN);
rcc_peripheral_enable_clock(&RCC_AHB2ENR, RCC_AHB2ENR_RNGEN);
init_rand();
gpio_mode_setup(GPIOA, GPIO_MODE_AF, GPIO_PUPD_NONE, GPIO9 | GPIO11 | GPIO12);
gpio_set_af(GPIOA, GPIO_AF10, GPIO9 | GPIO11 | GPIO12);