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Code Issues Releases Wiki Activity

Update API scheme to layer 84.

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This commit is contained in:
John Preston
2018-08-10 22:19:46 +03:00
parent 550c159ca8
commit bdab477040
20 changed files with 966 additions and 296 deletions
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27
Telegram/SourceFiles/mtproto/connection.cpp
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@@ -61,16 +61,20 @@ QString LogIdsVector(const QVector<MTPlong> &ids) {
return idsStr + "]";
}
bool IsGoodModExpFirst(const openssl::BigNum &modexp, const openssl::BigNum &prime) {
auto diff = prime - modexp;
bool IsGoodModExpFirst(
const openssl::BigNum &modexp,
const openssl::BigNum &prime) {
const auto diff = openssl::BigNum::Sub(prime, modexp);
if (modexp.failed() || prime.failed() || diff.failed()) {
return false;
}
constexpr auto kMinDiffBitsCount = 2048 - 64;
if (diff.isNegative() || diff.bitsSize() < kMinDiffBitsCount || modexp.bitsSize() < kMinDiffBitsCount) {
if (diff.isNegative()
|| diff.bitsSize() < kMinDiffBitsCount
|| modexp.bitsSize() < kMinDiffBitsCount
|| modexp.bytesSize() > kMaxModExpSize) {
return false;
}
Assert(modexp.bytesSize() <= kMaxModExpSize);
return true;
}
@@ -194,20 +198,21 @@ ModExpFirst CreateModExp(
BigNum prime(primeBytes);
auto result = ModExpFirst();
constexpr auto kMaxModExpFirstTries = 5;
result.randomPower.resize(ModExpFirst::kRandomPowerSize);
for (auto tries = 0; tries != kMaxModExpFirstTries; ++tries) {
while (true) {
bytes::set_random(result.randomPower);
for (auto i = 0; i != ModExpFirst::kRandomPowerSize; ++i) {
result.randomPower[i] ^= randomSeed[i];
}
auto modexp = BigNum::ModExp(BigNum(g), BigNum(result.randomPower), prime);
const auto modexp = BigNum::ModExp(
BigNum(g),
BigNum(result.randomPower),
prime);
if (IsGoodModExpFirst(modexp, prime)) {
result.modexp = modexp.getBytes();
break;
return result;
}
}
return result;
}
void wrapInvokeAfter(SecureRequest &to, const SecureRequest &from, const RequestMap &haveSent, int32 skipBeforeRequest = 0) {
@@ -3243,6 +3248,10 @@ bool IsPrimeAndGood(bytes::const_span primeBytes, int g) {
return internal::IsPrimeAndGood(primeBytes, g);
}
bool IsGoodModExpFirst(const openssl::BigNum &modexp, const openssl::BigNum &prime) {
return internal::IsGoodModExpFirst(modexp, prime);
}
ModExpFirst CreateModExp(int g, bytes::const_span primeBytes, bytes::const_span randomSeed) {
return internal::CreateModExp(g, primeBytes, randomSeed);
}