Adds partially support to t:sha1 transformation

src/utils/sha1.cc

@@ -65,7 +65,7 @@ void SHA1::update(std::istream *is) {
 }
 
 
-std::string SHA1::final() {
+std::string SHA1::final_bin(bool toReset = true) {
     /* Total number of hashed bits */
     uint64_t total_bits = (transforms*BLOCK_BYTES + buffer.size()) * 8;
 
@@ -91,6 +91,22 @@ std::string SHA1::final() {
     block[BLOCK_INTS - 2] = (total_bits >> 32);
     transform(block);
 
+    if (toReset) {
+        /* Reset for next run */
+        reset();
+    }
+
+    std::string bin;
+    bin.append((const char*) digest, BLOCK_INTS);
+
+    return bin;
+}
+
+
+std::string SHA1::final() {
+
+    final_bin(false);
+
     /* Hex std::string */
     std::ostringstream result;
     for (unsigned int i = 0; i < DIGEST_INTS; i++) {

src/utils/sha1.h

@@ -47,6 +47,10 @@ class SHA1 {
     void update(std::string *s);
     void update(std::istream *is);
     std::string final();
+    std::string final_bin() {
+        return final_bin(true);
+    }
+    std::string final_bin(bool reset);
 
  private:
     /* number of 32bit integers per SHA1 digest */