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spl: implement CryptoService.

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This commit is contained in:
Michael Scire 2019-04-24 21:00:39 -07:00
parent ccbab35deb
commit bfa84e27c1
12 changed files with 558 additions and 102 deletions
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18
stratosphere/spl/source/spl_ctr_drbg.cpp
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@ -26,9 +26,9 @@ void CtrDrbg::Update(const void *data) {
IncrementCounter(this->counter);
aes128EncryptBlock(&this->aes_ctx, &this->work[1][offset], this->counter);
}
Xor(this->work[1], data, sizeof(this->work[1]));
std::memcpy(this->key, &this->work[1][0], sizeof(this->key));
std::memcpy(this->counter, &this->work[1][BlockSize], sizeof(this->key));
}
@ -51,31 +51,31 @@ bool CtrDrbg::GenerateRandomBytes(void *out, size_t size) {
if (size > MaxRequestSize) {
return false;
}
if (this->reseed_counter > ReseedInterval) {
return false;
}
aes128ContextCreate(&this->aes_ctx, this->key, true);
u8 *cur_dst = reinterpret_cast<u8 *>(out);
size_t aligned_size = (size & ~(BlockSize - 1));
for (size_t offset = 0; offset < aligned_size; offset += BlockSize) {
IncrementCounter(this->counter);
aes128EncryptBlock(&this->aes_ctx, cur_dst, this->counter);
cur_dst += BlockSize;
}
if (size > aligned_size) {
IncrementCounter(this->counter);
aes128EncryptBlock(&this->aes_ctx, this->work[1], this->counter);
std::memcpy(cur_dst, this->work[1], size - aligned_size);
}
std::memset(this->work[0], 0, sizeof(this->work[0]));
this->Update(this->work[0]);
this->reseed_counter++;
return true;
}