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Avoid unaligned access in crypto i/o

0.14
Pieter Wuille 8 years ago
parent
commit
843c560003
  1. 36
      src/crypto/common.h

36
src/crypto/common.h

@ -10,57 +10,73 @@ @@ -10,57 +10,73 @@
#endif
#include <stdint.h>
#include <string.h>
#include "compat/endian.h"
uint16_t static inline ReadLE16(const unsigned char* ptr)
{
return le16toh(*((uint16_t*)ptr));
uint16_t x;
memcpy((char*)&x, ptr, 2);
return le16toh(x);
}
uint32_t static inline ReadLE32(const unsigned char* ptr)
{
return le32toh(*((uint32_t*)ptr));
uint32_t x;
memcpy((char*)&x, ptr, 4);
return le32toh(x);
}
uint64_t static inline ReadLE64(const unsigned char* ptr)
{
return le64toh(*((uint64_t*)ptr));
uint64_t x;
memcpy((char*)&x, ptr, 8);
return le64toh(x);
}
void static inline WriteLE16(unsigned char* ptr, uint16_t x)
{
*((uint16_t*)ptr) = htole16(x);
uint16_t v = htole16(x);
memcpy(ptr, (char*)&v, 2);
}
void static inline WriteLE32(unsigned char* ptr, uint32_t x)
{
*((uint32_t*)ptr) = htole32(x);
uint32_t v = htole32(x);
memcpy(ptr, (char*)&v, 4);
}
void static inline WriteLE64(unsigned char* ptr, uint64_t x)
{
*((uint64_t*)ptr) = htole64(x);
uint64_t v = htole64(x);
memcpy(ptr, (char*)&v, 8);
}
uint32_t static inline ReadBE32(const unsigned char* ptr)
{
return be32toh(*((uint32_t*)ptr));
uint32_t x;
memcpy((char*)&x, ptr, 4);
return be32toh(x);
}
uint64_t static inline ReadBE64(const unsigned char* ptr)
{
return be64toh(*((uint64_t*)ptr));
uint64_t x;
memcpy((char*)&x, ptr, 8);
return be64toh(x);
}
void static inline WriteBE32(unsigned char* ptr, uint32_t x)
{
*((uint32_t*)ptr) = htobe32(x);
uint32_t v = htobe32(x);
memcpy(ptr, (char*)&v, 4);
}
void static inline WriteBE64(unsigned char* ptr, uint64_t x)
{
*((uint64_t*)ptr) = htobe64(x);
uint64_t v = htobe64(x);
memcpy(ptr, (char*)&v, 8);
}
#endif // BITCOIN_CRYPTO_COMMON_H

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