aboutsummaryrefslogtreecommitdiff
path: root/src/hash.h
diff options
context:
space:
mode:
Diffstat (limited to 'src/hash.h')
-rw-r--r--src/hash.h36
1 files changed, 36 insertions, 0 deletions
diff --git a/src/hash.h b/src/hash.h
index eacb8f04fe..b9952d39fc 100644
--- a/src/hash.h
+++ b/src/hash.h
@@ -160,6 +160,41 @@ public:
}
};
+/** Reads data from an underlying stream, while hashing the read data. */
+template<typename Source>
+class CHashVerifier : public CHashWriter
+{
+private:
+ Source* source;
+
+public:
+ CHashVerifier(Source* source_) : CHashWriter(source_->GetType(), source_->GetVersion()), source(source_) {}
+
+ void read(char* pch, size_t nSize)
+ {
+ source->read(pch, nSize);
+ this->write(pch, nSize);
+ }
+
+ void ignore(size_t nSize)
+ {
+ char data[1024];
+ while (nSize > 0) {
+ size_t now = std::min<size_t>(nSize, 1024);
+ read(data, now);
+ nSize -= now;
+ }
+ }
+
+ template<typename T>
+ CHashVerifier<Source>& operator>>(T& obj)
+ {
+ // Unserialize from this stream
+ ::Unserialize(*this, obj);
+ return (*this);
+ }
+};
+
/** Compute the 256-bit hash of an object's serialization. */
template<typename T>
uint256 SerializeHash(const T& obj, int nType=SER_GETHASH, int nVersion=PROTOCOL_VERSION)
@@ -206,5 +241,6 @@ public:
* .Finalize()
*/
uint64_t SipHashUint256(uint64_t k0, uint64_t k1, const uint256& val);
+uint64_t SipHashUint256Extra(uint64_t k0, uint64_t k1, const uint256& val, uint32_t extra);
#endif // BITCOIN_HASH_H