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uint256::GetCheapHash bigendian compatibility

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daniel 2015-11-23 10:05:50 +08:00 committed by daniel
parent 0b0fc179ab
commit c434940e83
1 changed files with 2 additions and 4 deletions
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6
src/uint256.h
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@ -12,6 +12,7 @@
#include <stdint.h> #include <stdint.h>
#include <string> #include <string>
#include <vector> #include <vector>
#include "crypto/common.h"
/** Template base class for fixed-sized opaque blobs. */ /** Template base class for fixed-sized opaque blobs. */
template<unsigned int BITS> template<unsigned int BITS>
@ -119,13 +120,10 @@ public:
* used when the contents are considered uniformly random. It is not appropriate * used when the contents are considered uniformly random. It is not appropriate
* when the value can easily be influenced from outside as e.g. a network adversary could * when the value can easily be influenced from outside as e.g. a network adversary could
* provide values to trigger worst-case behavior. * provide values to trigger worst-case behavior.
* @note The result of this function is not stable between little and big endian.
*/ */
uint64_t GetCheapHash() const uint64_t GetCheapHash() const
{ {
uint64_t result; return ReadLE64(data);
memcpy((void*)&result, (void*)data, 8);
return result;
} }
/** A more secure, salted hash function. /** A more secure, salted hash function.