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54 lines
1.2 KiB
54 lines
1.2 KiB
#include <sys/types.h> |
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#include <sodium.h> |
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extern "C" { |
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#include <switch/sf/service.h> |
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#include <switch/services/csrng.h> |
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} |
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static const char *randombytes_switchrandom_implementation_name() |
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{ |
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return "switchrandom"; |
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} |
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static bool randombytes_switchrandom_tryfill(void *const buf, const size_t size) |
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{ |
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Result res; |
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Service *csrngService = csrngGetServiceSession(); |
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if (!serviceIsActive(csrngService)) { |
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res = csrngInitialize(); |
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if (!R_SUCCEEDED(res)) |
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return false; |
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} |
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res = csrngGetRandomBytes(buf, size); |
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return R_SUCCEEDED(res); |
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} |
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static uint32_t randombytes_switchrandom() |
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{ |
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uint32_t num; |
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if (!randombytes_switchrandom_tryfill(&num, sizeof(uint32_t))) |
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sodium_misuse(); |
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return num; |
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} |
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static void randombytes_switchrandom_buf(void *const buf, const size_t size) |
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{ |
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if (!randombytes_switchrandom_tryfill(buf, size)) |
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sodium_misuse(); |
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} |
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struct randombytes_implementation randombytes_switchrandom_implementation = { |
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randombytes_switchrandom_implementation_name, |
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randombytes_switchrandom, |
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nullptr, |
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nullptr, |
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randombytes_switchrandom_buf, |
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nullptr |
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}; |
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void randombytes_switchrandom_init() |
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{ |
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randombytes_set_implementation(&randombytes_switchrandom_implementation); |
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atexit(csrngExit); |
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}
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