本文整理汇总了C++中SecureString::empty方法的典型用法代码示例。如果您正苦于以下问题：C++ SecureString::empty方法的具体用法？C++ SecureString::empty怎么用？C++ SecureString::empty使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类SecureString的用法示例。
在下文中一共展示了SecureString::empty方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。
示例1: Check
bool CMnemonic::Check(SecureString mnemonic)
{
if (mnemonic.empty()) {
return false;
}
uint32_t nWordCount{};
for (size_t i = 0; i < mnemonic.size(); ++i) {
if (mnemonic[i] == ' ') {
nWordCount++;
}
}
nWordCount++;
// check number of words
if (nWordCount != 12 && nWordCount != 18 && nWordCount != 24) {
return false;
}
SecureString ssCurrentWord;
SecureVector bits(32 + 1);
uint32_t nWordIndex, ki, nBitsCount{};
for (size_t i = 0; i < mnemonic.size(); ++i)
{
ssCurrentWord = "";
while (i + ssCurrentWord.size() < mnemonic.size() && mnemonic[i + ssCurrentWord.size()] != ' ') {
if (ssCurrentWord.size() >= 9) {
return false;
}
ssCurrentWord += mnemonic[i + ssCurrentWord.size()];
}
i += ssCurrentWord.size();
nWordIndex = 0;
for (;;) {
if (!wordlist[nWordIndex]) { // word not found
return false;
}
if (ssCurrentWord == wordlist[nWordIndex]) { // word found on index nWordIndex
for (ki = 0; ki < 11; ki++) {
if (nWordIndex & (1 << (10 - ki))) {
bits[nBitsCount / 8] |= 1 << (7 - (nBitsCount % 8));
}
nBitsCount++;
}
break;
}
nWordIndex++;
}
}
if (nBitsCount != nWordCount * 11) {
return false;
}
bits[32] = bits[nWordCount * 4 / 3];
CSHA256().Write(&bits[0], nWordCount * 4 / 3).Finalize(&bits[0]);
bool fResult = 0;
if (nWordCount == 12) {
fResult = (bits[0] & 0xF0) == (bits[32] & 0xF0); // compare first 4 bits
} else
if (nWordCount == 18) {
fResult = (bits[0] & 0xFC) == (bits[32] & 0xFC); // compare first 6 bits
} else
if (nWordCount == 24) {
fResult = bits[0] == bits[32]; // compare 8 bits
}
return fResult;
}