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0a0b9fd760
problem: random byte generation on windows got stuck in an infinite loop solution: the failure test is incorrect. Change it
44 lines
794 B
C
44 lines
794 B
C
#include <windows.h>
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#include <WinCrypt.h>
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#define NCP ((HCRYPTPROV) 0)
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HCRYPTPROV hProvider = NCP;
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void randombytes(unsigned char *x,unsigned long long xlen)
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{
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unsigned i;
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BOOL ret;
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if (hProvider == NCP) {
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for(;;) {
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ret = CryptAcquireContext(&hProvider, NULL, NULL, PROV_RSA_FULL, CRYPT_VERIFYCONTEXT | CRYPT_SILENT);
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if (ret != FALSE) break;
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Sleep(1);
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}
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}
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while (xlen > 0) {
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if (xlen < 1048576) i = (unsigned) xlen; else i = 1048576;
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ret = CryptGenRandom(hProvider, i, x);
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if (ret == FALSE) {
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Sleep(1);
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continue;
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}
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x += i;
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xlen -= i;
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}
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}
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int randombytes_close(void)
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{
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int rc = -1;
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if((hProvider != NCP) && (CryptReleaseContext(hProvider, 0) != FALSE)) {
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hProvider = NCP;
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rc = 0;
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}
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return rc;
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}
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