7 files changed, 32 insertions, 2 deletions
diff --git a/src/hash/comb4p/comb4p.h b/src/hash/comb4p/comb4p.h
index 424512092..550b70b14 100644
--- a/src/hash/comb4p/comb4p.h
+++ b/src/hash/comb4p/comb4p.h
@@ -16,9 +16,13 @@ namespace Botan {
 * Combines two hash functions using a Feistel scheme. Described in
 * "On the Security of Hash Function Combiners", Anja Lehmann
 */
-class Comb4P : public HashFunction
+class BOTAN_DLL Comb4P : public HashFunction
    {
    public:
+      /**
+      * @param h1 the first hash
+      * @param h2 the second hash
+      */
       Comb4P(HashFunction* h1, HashFunction* h2);
 
       ~Comb4P() { delete hash1; delete hash2; }
diff --git a/src/hash/hash.h b/src/hash/hash.h
index 7cdfc6712..4f753f765 100644
--- a/src/hash/hash.h
+++ b/src/hash/hash.h
@@ -40,8 +40,13 @@ class BOTAN_DLL HashFunction : public BufferedComputation
       */
       virtual void clear() = 0;
 
+      /**
+      * @param hash_len the output length
+      * @param block_len the internal block size (if applicable)
+      */
       HashFunction(u32bit hash_len, u32bit block_len = 0) :
          BufferedComputation(hash_len), HASH_BLOCK_SIZE(block_len) {}
+
       virtual ~HashFunction() {}
    private:
       HashFunction& operator=(const HashFunction&);
diff --git a/src/hash/par_hash/par_hash.h b/src/hash/par_hash/par_hash.h
index 34d69e39a..d82a74a19 100644
--- a/src/hash/par_hash/par_hash.h
+++ b/src/hash/par_hash/par_hash.h
@@ -23,7 +23,10 @@ class BOTAN_DLL Parallel : public HashFunction
       std::string name() const;
       HashFunction* clone() const;
 
-      Parallel(const std::vector<HashFunction*>&);
+      /**
+      * @param hashes a set of hashes to compute in parallel
+      */
+      Parallel(const std::vector<HashFunction*>& hashes);
       ~Parallel();
    private:
       void add_data(const byte[], u32bit);
diff --git a/src/hash/sha1/sha160.h b/src/hash/sha1/sha160.h
index 3d46e0c79..c66831a1e 100644
--- a/src/hash/sha1/sha160.h
+++ b/src/hash/sha1/sha160.h
@@ -24,6 +24,12 @@ class BOTAN_DLL SHA_160 : public MDx_HashFunction
       SHA_160();
 
    protected:
+      /**
+      * Set a custom size for the W array. Normally 80, but some
+      * subclasses need slightly more for best performance/internal
+      * constraints
+      * @param W_size how big to make W
+      */
       SHA_160(u32bit W_size);
 
       void compress_n(const byte[], u32bit blocks);
diff --git a/src/hash/sha2/sha2_32.h b/src/hash/sha2/sha2_32.h
index 319432122..e8e60d07c 100644
--- a/src/hash/sha2/sha2_32.h
+++ b/src/hash/sha2/sha2_32.h
@@ -20,6 +20,10 @@ class BOTAN_DLL SHA_224_256_BASE : public MDx_HashFunction
    {
    protected:
       void clear();
+
+      /**
+      * @param out output size in bytes
+      */
       SHA_224_256_BASE(u32bit out) :
          MDx_HashFunction(out, 64, true, true) { clear(); }
 
diff --git a/src/hash/sha2/sha2_64.h b/src/hash/sha2/sha2_64.h
index 5094fc0d2..bf87eb62d 100644
--- a/src/hash/sha2/sha2_64.h
+++ b/src/hash/sha2/sha2_64.h
@@ -20,6 +20,9 @@ class BOTAN_DLL SHA_384_512_BASE : public MDx_HashFunction
    protected:
       void clear();
 
+      /**
+      * @param out output size in bytes
+      */
       SHA_384_512_BASE(u32bit out) :
          MDx_HashFunction(out, 128, true, true, 16) {}
 
diff --git a/src/hash/skein/skein_512.h b/src/hash/skein/skein_512.h
index b2ec57962..5d17fa564 100644
--- a/src/hash/skein/skein_512.h
+++ b/src/hash/skein/skein_512.h
@@ -20,6 +20,11 @@ namespace Botan {
 class BOTAN_DLL Skein_512 : public HashFunction
    {
    public:
+      /**
+      * @param output_bits the output size of Skein in bits
+      * @param personalization is a string that will paramaterize the
+      * hash output
+      */
       Skein_512(u32bit output_bits = 512,
                 const std::string& personalization = "");