mincrypt: support SHA-256 hash algorithm
- adds a library to compute the SHA-256 hash
- updates the RSA verifier to take an argument specifying either SHA-1
or SHA-256
- updates DumpPublicKey to with new "key" version numbers for
specifying SHA-256
- adds new argument to adb auth code to maintain existing behavior
(cherry picked from commit 515e1639ef0ab5e3149fafeffce826cf654d616f)
Change-Id: Ib35643b3d864742e817ac6e725499b451e45afcf
diff --git a/include/mincrypt/sha256.h b/include/mincrypt/sha256.h
new file mode 100644
index 0000000..0f3efb7
--- /dev/null
+++ b/include/mincrypt/sha256.h
@@ -0,0 +1,29 @@
+// Copyright 2011 Google Inc. All Rights Reserved.
+// Author: mschilder@google.com (Marius Schilder)
+
+#ifndef SECURITY_UTIL_LITE_SHA256_H__
+#define SECURITY_UTIL_LITE_SHA256_H__
+
+#include <stdint.h>
+#include "hash-internal.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif // __cplusplus
+
+typedef HASH_CTX SHA256_CTX;
+
+void SHA256_init(SHA256_CTX* ctx);
+void SHA256_update(SHA256_CTX* ctx, const void* data, int len);
+const uint8_t* SHA256_final(SHA256_CTX* ctx);
+
+// Convenience method. Returns digest address.
+const uint8_t* SHA256_hash(const void* data, int len, uint8_t* digest);
+
+#define SHA256_DIGEST_SIZE 32
+
+#ifdef __cplusplus
+}
+#endif // __cplusplus
+
+#endif // SECURITY_UTIL_LITE_SHA256_H__