本文整理汇总了C++中SecByteBlock::empty方法的典型用法代码示例。如果您正苦于以下问题：C++ SecByteBlock::empty方法的具体用法？C++ SecByteBlock::empty怎么用？C++ SecByteBlock::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SecByteBlock的用法示例。
在下文中一共展示了SecByteBlock::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: PEM_StripEncapsulatedHeader
void PEM_StripEncapsulatedHeader(BufferedTransformation& src, BufferedTransformation& dest, EncapsulatedHeader& header)
{
if(!src.AnyRetrievable())
return;
SecByteBlock line, ending;
size_t size = 0;
// The first line *must* be Proc-Type. Ensure we read it before dropping into the loop.
size = PEM_ReadLine(src, line, ending);
if(size == 0 || line.empty())
throw InvalidDataFormat("PEM_StripEncapsulatedHeader: failed to locate Proc-Type");
SecByteBlock field = GetControlField(line);
if(field.empty())
throw InvalidDataFormat("PEM_StripEncapsulatedHeader: failed to locate Proc-Type");
if(0 != CompareNoCase(field, SBB_PROC_TYPE))
throw InvalidDataFormat("PEM_StripEncapsulatedHeader: failed to locate Proc-Type");
line = GetControlFieldData(line);
string tline(reinterpret_cast<const char*>(line.data()),line.size());
PEM_ParseVersion(tline, header.m_version);
if(header.m_version != "4")
throw NotImplemented("PEM_StripEncapsulatedHeader: encryption version " + header.m_version + " not supported");
PEM_ParseOperation(tline, header.m_operation);
if(header.m_operation != "ENCRYPTED")
throw NotImplemented("PEM_StripEncapsulatedHeader: operation " + header.m_operation + " not supported");
// Next, we have to read until the first empty line
while(true)
{
if(!src.AnyRetrievable()) break; // End Of Buffer
size = PEM_ReadLine(src, line, ending);
if(size == 0) break; // End Of Buffer
if(line.size() == 0) break; // size is non-zero; empty line
field = GetControlField(line);
if(0 == CompareNoCase(field, SBB_DEK_INFO))
{
line = GetControlFieldData(line);
tline = string(reinterpret_cast<const char*>(line.data()),line.size());
PEM_ParseAlgorithm(tline, header.m_algorithm);
PEM_ParseIV(tline, header.m_iv);
continue;
}
if(0 == CompareNoCase(field, SBB_CONTENT_DOMAIN))
{
// Silently ignore
// Content-Domain: RFC822
continue;
}
if(!field.empty())
{
const char* ptr = (char*)field.begin();
size_t len = field.size();
string m(ptr, len);
throw NotImplemented("PEM_StripEncapsulatedHeader: " + m + " not supported");
}
}
if(header.m_algorithm.empty())
throw InvalidArgument("PEM_StripEncapsulatedHeader: no encryption algorithm");
if(header.m_iv.empty())
throw InvalidArgument("PEM_StripEncapsulatedHeader: no IV present");
// After the empty line is the encapsulated text. Transfer it to the destination.
src.TransferTo(dest);
}