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rel_1.6.0 init

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guocheng.kgc 2020-06-18 20:06:52 +08:00 • committed by shengdong.dsd
commit 27b3e2883d
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54
Living_SDK/security/alicrypto/libalicrypto/sw/ali_crypto_rand.c Normal file
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/**
* Copyright (C) 2017 The YunOS Project. All rights reserved.
**/
#include "ali_crypto.h"
#include "mbed_crypto.h"
//static uint32_t next = 1;
static uint32_t randseed = 12345;
uint32_t ali_crypt_rand_word(void)
{
return (randseed = randseed * 1664525 + 1013904223);
}
ali_crypto_result ali_rand_gen(uint8_t *buf, size_t len)
{
uint32_t i;
uint32_t tmp;
if (buf == NULL || len == 0) {
MBED_DBG_E("ali_rand_gen: invalid input args!\n");
return ALI_CRYPTO_INVALID_ARG;
}
tmp = ali_crypt_rand_word();
for (i = 0; i < len; i++) {
if ((i & 3) == 0) {
tmp = ali_crypt_rand_word();
}
buf[i] = ((tmp >> ((i & 3) << 3)) & 0xff);
}
return ALI_CRYPTO_SUCCESS;
}
ali_crypto_result ali_seed(uint8_t *seed, size_t seed_len)
{
uint32_t i, tmp = 0;
for (i = 0; i < (seed_len - seed_len % 4); i += 4) {
tmp ^= seed[i];
tmp ^= seed[i + 1] << 8;
tmp ^= seed[i + 2] << 16;
tmp ^= seed[i + 3] << 24;
}
while (i < seed_len) {
tmp ^= seed[i++];
}
randseed = tmp;
return ALI_CRYPTO_SUCCESS;
}

14
Living_SDK/security/alicrypto/libalicrypto/sw/ali_crypto_rand.h Normal file
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/*
* Copyright (C) 2016 The YunOS Project. All rights reserved.
*/
#ifndef _ALI_CRYPTO_RAND_H_
#define _ALI_CRYPTO_RAND_H_
#include "ali_crypto.h"
extern void ali_crypt_rand_reseed(uint32_t seed);
extern uint32_t ali_crypt_rand_word(void);
extern uint32_t ali_crypt_rand_bytes(uint8_t *buf, uint32_t len);
#endif /* _ALI_CRYPTO_RAND_H_ */