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Add single sha256 call to CHashWriter

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This commit is contained in:
Jeremy Rubin 2019-10-07 13:45:00 -07:00
parent 82127d27c9
commit b475d7d0fa
1 changed files with 20 additions and 7 deletions
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27
src/hash.h
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@ -98,7 +98,7 @@ inline uint160 Hash160(const T1& in1)
class CHashWriter
{
private:
CHash256 ctx;
CSHA256 ctx;
const int nType;
const int nVersion;
@ -110,13 +110,27 @@ public:
int GetVersion() const { return nVersion; }
void write(const char *pch, size_t size) {
ctx.Write({(const unsigned char*)pch, size});
ctx.Write((const unsigned char*)pch, size);
}
// invalidates the object
/** Compute the double-SHA256 hash of all data written to this object.
*
* Invalidates this object.
*/
uint256 GetHash() {
uint256 result;
ctx.Finalize(result);
ctx.Finalize(result.begin());
ctx.Reset().Write(result.begin(), CSHA256::OUTPUT_SIZE).Finalize(result.begin());
return result;
}
/** Compute the SHA256 hash of all data written to this object.
*
* Invalidates this object.
*/
uint256 GetSHA256() {
uint256 result;
ctx.Finalize(result.begin());
return result;
}
@ -124,9 +138,8 @@ public:
* Returns the first 64 bits from the resulting hash.
*/
inline uint64_t GetCheapHash() {
unsigned char result[CHash256::OUTPUT_SIZE];
ctx.Finalize(result);
return ReadLE64(result);
uint256 result = GetHash();
return ReadLE64(result.begin());
}
template<typename T>