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authorPieter Wuille <pieter.wuille@gmail.com>2017-07-13 23:26:04 -0700
committerPieter Wuille <pieter.wuille@gmail.com>2017-07-20 09:03:53 -0700
commit2991c91d88f3d17ac6b38bddfa6f1b6b8d835c0f (patch)
tree38783e7e46a9fbf4b038236f2cde834afe1a6fdb /src/crypto
parent4d50f38fe05374342b4b55953d188fd50d422663 (diff)
Add SHA256 dispatcher
Diffstat (limited to 'src/crypto')
-rw-r--r--src/crypto/sha256.cpp13
-rw-r--r--src/crypto/sha256.h6
2 files changed, 17 insertions, 2 deletions
diff --git a/src/crypto/sha256.cpp b/src/crypto/sha256.cpp
index 45ee93d471..3649dc4be0 100644
--- a/src/crypto/sha256.cpp
+++ b/src/crypto/sha256.cpp
@@ -8,6 +8,8 @@
#include <string.h>
+#include <atomic>
+
// Internal implementation code.
namespace
{
@@ -131,8 +133,15 @@ void Transform(uint32_t* s, const unsigned char* chunk, size_t blocks)
}
} // namespace sha256
+
+void (*Transform)(uint32_t*, const unsigned char*, size_t) = sha256::Transform;
+
} // namespace
+std::string SHA256AutoDetect()
+{
+ return "standard";
+}
////// SHA-256
@@ -150,12 +159,12 @@ CSHA256& CSHA256::Write(const unsigned char* data, size_t len)
memcpy(buf + bufsize, data, 64 - bufsize);
bytes += 64 - bufsize;
data += 64 - bufsize;
- sha256::Transform(s, buf, 1);
+ Transform(s, buf, 1);
bufsize = 0;
}
if (end - data >= 64) {
size_t blocks = (end - data) / 64;
- sha256::Transform(s, data, blocks);
+ Transform(s, data, blocks);
data += 64 * blocks;
bytes += 64 * blocks;
}
diff --git a/src/crypto/sha256.h b/src/crypto/sha256.h
index 127e62a228..aa4f3972cc 100644
--- a/src/crypto/sha256.h
+++ b/src/crypto/sha256.h
@@ -7,6 +7,7 @@
#include <stdint.h>
#include <stdlib.h>
+#include <string>
/** A hasher class for SHA-256. */
class CSHA256
@@ -25,4 +26,9 @@ public:
CSHA256& Reset();
};
+/** Autodetect the best available SHA256 implementation.
+ * Returns the name of the implementation.
+ */
+std::string SHA256AutoDetect();
+
#endif // BITCOIN_CRYPTO_SHA256_H