1 files changed, 37 insertions, 0 deletions

diff --git a/CPP/7zip/Crypto/Sha1Cls.h b/CPP/7zip/Crypto/Sha1Cls.h
new file mode 100644
index 0000000..3461678
--- /dev/null
+++ b/CPP/7zip/Crypto/Sha1Cls.h
@@ -0,0 +1,37 @@
+// Crypto/Sha1Cls.h
+
+#ifndef __CRYPTO_SHA1_CLS_H
+#define __CRYPTO_SHA1_CLS_H
+
+#include "../../../C/Sha1.h"
+
+namespace NCrypto {
+namespace NSha1 {
+
+const unsigned kNumBlockWords = SHA1_NUM_BLOCK_WORDS;
+const unsigned kNumDigestWords = SHA1_NUM_DIGEST_WORDS;
+
+const unsigned kBlockSize = SHA1_BLOCK_SIZE;
+const unsigned kDigestSize = SHA1_DIGEST_SIZE;
+
+class CContext
+{
+  CSha1 _s;
+ 
+public:
+  void Init() throw() { Sha1_Init(&_s); }
+  void Update(const Byte *data, size_t size) throw() { Sha1_Update(&_s, data, size); }
+  void Final(Byte *digest) throw() { Sha1_Final(&_s, digest); }
+  void PrepareBlock(Byte *block, unsigned size) const throw()
+  {
+    Sha1_PrepareBlock(&_s, block, size);
+  }
+  void GetBlockDigest(const Byte *blockData, Byte *destDigest) const throw()
+  {
+    Sha1_GetBlockDigest(&_s, blockData, destDigest);
+  }
+};
+
+}}
+
+#endif