From 676852ca9ba566c75f4e5aa5f3853ca20ae88189 Mon Sep 17 00:00:00 2001
From: "Nicolas \"Pixel\" Noble" <pixel@nobis-crew.org>
Date: Fri, 20 Jun 2014 23:32:32 -0700
Subject: Better hashes implementation.

---
 includes/BHashes.h | 90 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 includes/BSHA1.h   | 21 -------------
 2 files changed, 90 insertions(+), 21 deletions(-)
 create mode 100644 includes/BHashes.h
 delete mode 100644 includes/BSHA1.h

(limited to 'includes')

diff --git a/includes/BHashes.h b/includes/BHashes.h
new file mode 100644
index 0000000..505e417
--- /dev/null
+++ b/includes/BHashes.h
@@ -0,0 +1,90 @@
+#pragma once
+
+#include <array>
+#include <Exceptions.h>
+#include <tomcrypt.h>
+
+namespace Balau {
+
+template<const struct ltc_hash_descriptor * desc>
+class Hash {
+  public:
+      Hash() { reset(); }
+    void reset() {
+        int r = desc->init(&m_state);
+        IAssert(r == CRYPT_OK, "init for %s returned %i", desc->name, r);
+    }
+    void update(const uint8_t * data, const size_t len) {
+        int r = desc->process(&m_state, data, len);
+        IAssert(r == CRYPT_OK, "process for %s returned %i", desc->name, r);
+    }
+    void update(const String & data) { update((uint8_t *) data.to_charp(), data.strlen()); }
+    template<size_t L>
+    void update(const char (&str)[L]) { update((uint8_t *) str, L - 1); }
+    template<size_t L>
+    unsigned final(uint8_t (&digest)[L]) { return final(digest, L); }
+    unsigned final(void * digest, unsigned outlen) {
+        AAssert(outlen >= digestSize(), "digest size too small being passed on for %s: %u instead of %u", name(), outlen, digestSize());
+        int r = desc->done(&m_state, (uint8_t *)digest);
+        IAssert(r == CRYPT_OK, "done for %s returned %i", desc->name, r);
+        return digestSize();
+    }
+
+    static const unsigned digestSize() { return desc->hashsize; }
+    static const unsigned blockSize() { return desc->blocksize; }
+    static const char * name() { return desc->name; }
+    static char hashID() { return desc->ID; }
+
+  private:
+    hash_state m_state;
+};
+
+template<class Hash>
+class HMAC {
+  public:
+    void prepare(const uint8_t * key, const size_t len) {
+        int r = hmac_init(&m_state, find_hash_id(Hash::hashID()), key, len);
+        IAssert(r == CRYPT_OK, "hmac_init for %s returned %i", Hash::name(), r);
+    }
+    void prepare(const String & data) { prepare((uint8_t *) data.to_charp(), data.strlen()); }
+    template<size_t L>
+    void prepare(const char (&str)[L]) { prepare((uint8_t *) str, L - 1); }
+    void update(const uint8_t * data, const size_t len) {
+        int r = hmac_process(&m_state, data, len);
+        IAssert(r == CRYPT_OK, "hmac_process for %s returned %i", Hash::name(), r);
+    }
+    void update(const String & data) { update((uint8_t *) data.to_charp(), data.strlen()); }
+    template<size_t L>
+    void update(const char (&str)[L]) { update((uint8_t *) str, L - 1); }
+    template<size_t L>
+    unsigned final(uint8_t(&digest)[L]) { return final(digest, L); }
+    unsigned final(void * digest, unsigned outlen) {
+        int r = hmac_done(&m_state, (uint8_t *) digest, &outlen);
+        IAssert(r == CRYPT_OK, "hmac_done for %s returned %i", Hash::name(), r);
+        return outlen;
+    }
+
+    static const unsigned digestSize() { return Hash::digestSize(); }
+    static const unsigned blockSize() { return Hash::blockSize(); }
+
+  private:
+    hmac_state m_state;
+};
+
+class CHC       : public Hash<&chc_desc> { };
+class Whirlpool : public Hash<&whirlpool_desc> { };
+class SHA512    : public Hash<&sha512_desc> { };
+class SHA384    : public Hash<&sha384_desc> { };
+class SHA256    : public Hash<&sha256_desc> { };
+class SHA224    : public Hash<&sha224_desc> { };
+class SHA1      : public Hash<&sha1_desc> { };
+class MD5       : public Hash<&md5_desc> { };
+class MD4       : public Hash<&md4_desc> { };
+class MD2       : public Hash<&md2_desc> { };
+class Tiger     : public Hash<&tiger_desc> { };
+class RMD128    : public Hash<&rmd128_desc> { };
+class RMD160    : public Hash<&rmd160_desc> { };
+class RMD256    : public Hash<&rmd256_desc> { };
+class RMD320    : public Hash<&rmd320_desc> { };
+
+};
diff --git a/includes/BSHA1.h b/includes/BSHA1.h
deleted file mode 100644
index b58a890..0000000
--- a/includes/BSHA1.h
+++ /dev/null
@@ -1,21 +0,0 @@
-#pragma once
-
-#include <Exceptions.h>
-#include <tomcrypt.h>
-
-namespace Balau {
-
-class SHA1 {
-  public:
-      SHA1() { reset(); }
-    void reset() { sha1_init(&m_state); }
-    void update(const uint8_t * data, const size_t len) { sha1_process(&m_state, data, len); }
-    void final(uint8_t * digest) { sha1_done(&m_state, digest); }
-
-    enum { DIGEST_SIZE = 20 };
-
-  private:
-    hash_state m_state;
-};
-
-};
-- 
cgit v1.2.3