Initial commit to populate CoreCLR repo

[tfs-changeset: 1407945]

1 files changed, 55 insertions, 0 deletions

diff --git a/src/vm/sha1.h b/src/vm/sha1.h
new file mode 100644
index 0000000000..ed814c0fa9
--- /dev/null
+++ b/src/vm/sha1.h
@@ -0,0 +1,55 @@
+//
+// Copyright (c) Microsoft. All rights reserved.
+// Licensed under the MIT license. See LICENSE file in the project root for full license information.
+//
+// 
+
+#if defined(FEATURE_CORECLR)
+#ifndef SHA1_H_
+#define SHA1_H_
+
+// Hasher class, performs no allocation and therefore does not throw or return
+// errors. Usage is as follows:
+//  Create an instance (this initializes the hash).
+//  Add one or more blocks of input data using AddData().
+//  Retrieve the hash using GetHash(). This can be done as many times as desired
+//  until the object is destructed. Once a hash is asked for, further AddData
+//  calls will be ignored. There is no way to reset object state (simply
+//  destroy the object and create another instead).
+
+#define SHA1_HASH_SIZE 20  // Number of bytes output by SHA-1
+
+typedef struct {
+        DWORD magic_sha1;    // Magic value for A_SHA_CTX
+        DWORD awaiting_data[16];
+                             // Data awaiting full 512-bit block.
+                             // Length (nbit_total[0] % 512) bits.
+                             // Unused part of buffer (at end) is zero
+        DWORD partial_hash[5];
+                             // Hash through last full block
+        DWORD nbit_total[2];       
+                             // Total length of message so far
+                             // (bits, mod 2^64)
+} SHA1_CTX;
+
+class SHA1Hash
+{
+private:
+    SHA1_CTX m_Context;
+    BYTE     m_Value[SHA1_HASH_SIZE];
+    BOOL     m_fFinalized;
+    
+    void SHA1Init(SHA1_CTX*);
+    void SHA1Update(SHA1_CTX*, const BYTE*, const DWORD);
+    void SHA1Final(SHA1_CTX*, BYTE* digest);
+
+public:
+    SHA1Hash();
+    void AddData(BYTE *pbData, DWORD cbData);
+    BYTE *GetHash();
+};
+
+#endif  // SHA1_H_
+#else // !defined(FEATURE_CORECLR)
+#include "crypto/sha1.h"
+#endif // defined(FEATURE_CORECLR)
\ No newline at end of file