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Remove duplicated sha1 implementation (Fixes #6568) (#6569)

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* Remove duplicated sha1 implementation (Fixes #6568)

The Hash library had its own copy of a loop-unrolled sha1 implementation
adding a large code footprint for no good reason, as there are several
sha1 implementations already in tree (one in NONOS-SDK as well as one
in bearssl). Switching to the bearssl one is straightforward and removes
about 3kb of code size overhead.

Also cleanup some obvious inefficiencies (copy by value, string
summing, no reservation causing repeated reallocations) in the
implementation.

* Remove overload variants for sha1(...) that accept nonconst data

The data is always remaining unmodified, so non-const overloads
are confusing and redundant. Also optimize the hexify variant
a bit more.
This commit is contained in:
Dirk Mueller
2019-10-01 05:58:09 +02:00
committed by Earle F. Philhower, III
parent 2a83adb0fd
commit 1d26b28225
4 changed files with 20 additions and 285 deletions
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12
libraries/Hash/src/Hash.h
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@ -27,16 +27,12 @@
//#define DEBUG_SHA1
void sha1(uint8_t * data, uint32_t size, uint8_t hash[20]);
void sha1(char * data, uint32_t size, uint8_t hash[20]);
void sha1(const uint8_t * data, uint32_t size, uint8_t hash[20]);
void sha1(const char * data, uint32_t size, uint8_t hash[20]);
void sha1(String data, uint8_t hash[20]);
void sha1(const uint8_t* data, uint32_t size, uint8_t hash[20]);
void sha1(const char* data, uint32_t size, uint8_t hash[20]);
void sha1(const String& data, uint8_t hash[20]);
String sha1(uint8_t* data, uint32_t size);
String sha1(char* data, uint32_t size);
String sha1(const uint8_t* data, uint32_t size);
String sha1(const char* data, uint32_t size);
String sha1(String data);
String sha1(const String& data);
#endif /* HASH_H_ */