#include "il2cpp-config.h"
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#include "il2cpp-api.h"
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#include "vm/Array.h"
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#include "os/Cryptography.h"
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#include "utils/Memory.h"
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#include "icalls/mscorlib/System.Security.Cryptography/RNGCryptoServiceProvider.h"
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namespace il2cpp
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{
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namespace icalls
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{
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namespace mscorlib
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{
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namespace System
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{
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namespace Security
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{
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namespace Cryptography
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{
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void RNGCryptoServiceProvider::RngClose(intptr_t provider)
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{
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os::Cryptography::ReleaseCryptographyProvider(reinterpret_cast<void*>(provider));
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}
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intptr_t RNGCryptoServiceProvider::RngGetBytes(intptr_t provider, Il2CppArray *data)
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{
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uint32_t len = il2cpp_array_length(data);
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unsigned char* buf = il2cpp_array_addr(data, unsigned char, 0);
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if (!os::Cryptography::FillBufferWithRandomBytes(reinterpret_cast<void*>(provider), len, buf))
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{
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os::Cryptography::ReleaseCryptographyProvider(reinterpret_cast<void*>(provider));
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provider = RngInitialize(NULL);
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if (!os::Cryptography::FillBufferWithRandomBytes(reinterpret_cast<void*>(provider), len, buf))
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{
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os::Cryptography::ReleaseCryptographyProvider(reinterpret_cast<void*>(provider));
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return 0;
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}
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}
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return provider;
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}
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intptr_t RNGCryptoServiceProvider::RngInitialize(Il2CppArray *seed)
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{
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void* provider = os::Cryptography::GetCryptographyProvider();
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if ((provider != 0) && seed)
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{
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uint32_t len = il2cpp_array_length(seed);
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unsigned char *buf = il2cpp_array_addr(seed, unsigned char, 0);
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unsigned char* data = (unsigned char*)IL2CPP_MALLOC(len);
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if (data)
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{
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memcpy(data, buf, len);
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os::Cryptography::FillBufferWithRandomBytes(provider, len, data);
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memset(data, 0, len);
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IL2CPP_FREE(data);
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}
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}
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return reinterpret_cast<intptr_t>(provider);
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}
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bool RNGCryptoServiceProvider::RngOpen()
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{
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return os::Cryptography::OpenCryptographyProvider();
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}
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} /* namespace Cryptography */
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} /* namespace Security */
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} /* namespace System */
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} /* namespace mscorlib */
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} /* namespace icalls */
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} /* namespace il2cpp */
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