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authorRemko Tronçon <git@el-tramo.be>2011-04-04 20:51:49 (GMT)
committerRemko Tronçon <git@el-tramo.be>2011-04-18 19:11:40 (GMT)
commit1a92834490cda1352a46eaef02a4e7ff76ab94e3 (patch)
tree393a65efb8eb4aa7f284a9b46f2604bf1d295e5a /Swiften
parent36c2dbefc06607483eb0d309e3a9a4ad1f4f8f73 (diff)
downloadswift-contrib-1a92834490cda1352a46eaef02a4e7ff76ab94e3.zip
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Make SHA1 stateful.
Resolves: #814
Diffstat (limited to 'Swiften')
-rw-r--r--Swiften/StringCodecs/SHA1.cpp69
-rw-r--r--Swiften/StringCodecs/SHA1.h27
-rw-r--r--Swiften/StringCodecs/UnitTest/SHA1Test.cpp53
3 files changed, 117 insertions, 32 deletions
diff --git a/Swiften/StringCodecs/SHA1.cpp b/Swiften/StringCodecs/SHA1.cpp
index 9882f70..a78a7b0 100644
--- a/Swiften/StringCodecs/SHA1.cpp
+++ b/Swiften/StringCodecs/SHA1.cpp
@@ -4,10 +4,14 @@
* See Documentation/Licenses/GPLv3.txt for more information.
*/
+#include <Swiften/StringCodecs/SHA1.h>
+
#include "Swiften/Base/Platform.h"
#pragma GCC diagnostic ignored "-Wold-style-cast"
+using namespace Swift;
+
/*
SHA-1 in C
By Steve Reid <steve@edmweb.com>
@@ -25,21 +29,9 @@ A million repetitions of "a"
/* #define LITTLE_ENDIAN * This should be #define'd if true. */
/* #define SHA1HANDSOFF * Copies data before messing with it. */
-#include <boost/cstdint.hpp>
#include <stdio.h>
#include <string.h>
-typedef struct {
- boost::uint32_t state[5];
- boost::uint32_t count[2];
- boost::uint8_t buffer[64];
-} SHA1_CTX;
-
-void SHA1Transform(boost::uint32_t state[5], boost::uint8_t buffer[64]);
-void SHA1Init(SHA1_CTX* context);
-void SHA1Update(SHA1_CTX* context, boost::uint8_t* data, unsigned int len);
-void SHA1Final(boost::uint8_t digest[20], SHA1_CTX* context);
-
#define rol(value, bits) (((value) << (bits)) | ((value) >> (32 - (bits))))
/* blk0() and blk() perform the initial expand. */
@@ -63,7 +55,7 @@ void SHA1Final(boost::uint8_t digest[20], SHA1_CTX* context);
/* Hash a single 512-bit block. This is the core of the algorithm. */
-void SHA1Transform(boost::uint32_t state[5], boost::uint8_t buffer[64])
+void SHA1::Transform(boost::uint32_t state[5], boost::uint8_t buffer[64])
{
boost::uint32_t a, b, c, d, e;
typedef union {
@@ -118,7 +110,7 @@ static boost::uint8_t workspace[64];
/* SHA1Init - Initialize new context */
-void SHA1Init(SHA1_CTX* context)
+void SHA1::Init(SHA1::CTX* context)
{
/* SHA1 initialization constants */
context->state[0] = 0x67452301;
@@ -132,7 +124,7 @@ void SHA1Init(SHA1_CTX* context)
/* Run your data through this. */
-void SHA1Update(SHA1_CTX* context, boost::uint8_t* data, unsigned int len)
+void SHA1::Update(SHA1::CTX* context, boost::uint8_t* data, unsigned int len)
{
unsigned int i, j;
@@ -141,9 +133,9 @@ unsigned int i, j;
context->count[1] += (len >> 29);
if ((j + len) > 63) {
memcpy(&context->buffer[j], data, (i = 64-j));
- SHA1Transform(context->state, context->buffer);
+ Transform(context->state, context->buffer);
for ( ; i + 63 < len; i += 64) {
- SHA1Transform(context->state, &data[i]);
+ Transform(context->state, &data[i]);
}
j = 0;
}
@@ -154,7 +146,7 @@ unsigned int i, j;
/* Add padding and return the message digest. */
-void SHA1Final(boost::uint8_t digest[20], SHA1_CTX* context)
+void SHA1::Final(boost::uint8_t digest[20], SHA1::CTX* context)
{
boost::uint32_t i, j;
boost::uint8_t finalcount[8];
@@ -163,11 +155,11 @@ boost::uint8_t finalcount[8];
finalcount[i] = (boost::uint8_t) ((context->count[(i >= 4 ? 0 : 1)]
>> ((3-(i & 3)) * 8) ) & 255); /* Endian independent */
}
- SHA1Update(context, (boost::uint8_t *)("\200"), 1);
+ Update(context, (boost::uint8_t *)("\200"), 1);
while ((context->count[0] & 504) != 448) {
- SHA1Update(context, (boost::uint8_t *)("\0"), 1);
+ Update(context, (boost::uint8_t *)("\0"), 1);
}
- SHA1Update(context, finalcount, 8); /* Should cause a SHA1Transform() */
+ Update(context, finalcount, 8); /* Should cause a SHA1Transform() */
for (i = 0; i < 20; i++) {
digest[i] = (boost::uint8_t)
((context->state[i>>2] >> ((3-(i & 3)) * 8) ) & 255);
@@ -179,24 +171,43 @@ boost::uint8_t finalcount[8];
memset(context->count, 0, 8);
memset(&finalcount, 0, 8);
#ifdef SHA1HANDSOFF /* make SHA1Transform overwrite it's own static vars */
- SHA1Transform(context->state, context->buffer);
+ Transform(context->state, context->buffer);
#endif
}
// -----------------------------------------------------------------------------
-#include "Swiften/StringCodecs/SHA1.h"
-
namespace Swift {
+SHA1::SHA1() {
+ Init(&context);
+}
+
+SHA1& SHA1::update(const std::vector<unsigned char>& input) {
+ std::vector<unsigned char> inputCopy(input);
+ Update(&context, (boost::uint8_t*) &inputCopy[0], inputCopy.size());
+ return *this;
+}
+
+std::vector<unsigned char> SHA1::getHash() const {
+ std::vector<unsigned char> digest;
+ digest.resize(20);
+ CTX contextCopy(context);
+ Final((boost::uint8_t*) &digest[0], &contextCopy);
+ return digest;
+}
+
ByteArray SHA1::getHash(const ByteArray& input) {
- ByteArray inputCopy(input);
+ CTX context;
+ Init(&context);
+
+ std::vector<unsigned char> inputCopy(input.getVector());
+ Update(&context, (boost::uint8_t*) &inputCopy[0], inputCopy.size());
+
ByteArray digest;
digest.resize(20);
- SHA1_CTX context;
- SHA1Init(&context);
- SHA1Update(&context, (boost::uint8_t*) inputCopy.getData(), inputCopy.getSize());
- SHA1Final((boost::uint8_t*) digest.getData(), &context);
+ Final((boost::uint8_t*) digest.getData(), &context);
+
return digest;
}
diff --git a/Swiften/StringCodecs/SHA1.h b/Swiften/StringCodecs/SHA1.h
index fc5ba0e..9c0232a 100644
--- a/Swiften/StringCodecs/SHA1.h
+++ b/Swiften/StringCodecs/SHA1.h
@@ -6,11 +6,38 @@
#pragma once
+#include <vector>
+#include <boost/cstdint.hpp>
+
#include "Swiften/Base/ByteArray.h"
namespace Swift {
class SHA1 {
public:
+ SHA1();
+
+ SHA1& update(const std::vector<unsigned char>& data);
+ std::vector<unsigned char> getHash() const;
+
+ /**
+ * Equivalent of:
+ * SHA1().update(data),getHash(), but slightly more efficient and
+ * convenient.
+ */
static ByteArray getHash(const ByteArray& data);
+
+ private:
+ typedef struct {
+ boost::uint32_t state[5];
+ boost::uint32_t count[2];
+ boost::uint8_t buffer[64];
+ } CTX;
+ static void Init(CTX* context);
+ static void Transform(boost::uint32_t state[5], boost::uint8_t buffer[64]);
+ static void Update(CTX* context, boost::uint8_t* data, unsigned int len);
+ static void Final(boost::uint8_t digest[20], CTX* context);
+
+ private:
+ CTX context;
};
}
diff --git a/Swiften/StringCodecs/UnitTest/SHA1Test.cpp b/Swiften/StringCodecs/UnitTest/SHA1Test.cpp
index 9434235..984f512 100644
--- a/Swiften/StringCodecs/UnitTest/SHA1Test.cpp
+++ b/Swiften/StringCodecs/UnitTest/SHA1Test.cpp
@@ -16,18 +16,65 @@ using namespace Swift;
class SHA1Test : public CppUnit::TestFixture {
CPPUNIT_TEST_SUITE(SHA1Test);
CPPUNIT_TEST(testGetHash);
- CPPUNIT_TEST(testGetHash_Twice);
+ CPPUNIT_TEST(testGetHash_TwoUpdates);
+ CPPUNIT_TEST(testGetHash_TwoGetHash);
CPPUNIT_TEST(testGetHash_NoData);
+ CPPUNIT_TEST(testGetHash_InterleavedUpdate);
+ CPPUNIT_TEST(testGetHashStatic);
+ CPPUNIT_TEST(testGetHashStatic_Twice);
+ CPPUNIT_TEST(testGetHashStatic_NoData);
CPPUNIT_TEST_SUITE_END();
public:
void testGetHash() {
+ SHA1 sha;
+ sha.update(ByteArray::create("client/pc//Exodus 0.9.1<http://jabber.org/protocol/caps<http://jabber.org/protocol/disco#info<http://jabber.org/protocol/disco#items<http://jabber.org/protocol/muc<"));
+
+ CPPUNIT_ASSERT_EQUAL(ByteArray::create("\x42\x06\xb2\x3c\xa6\xb0\xa6\x43\xd2\x0d\x89\xb0\x4f\xf5\x8c\xf7\x8b\x80\x96\xed"), sha.getHash());
+ }
+
+ void testGetHash_TwoUpdates() {
+ SHA1 sha;
+ sha.update(ByteArray::create("client/pc//Exodus 0.9.1<http://jabber.org/protocol/caps<"));
+ sha.update(ByteArray::create("http://jabber.org/protocol/disco#info<http://jabber.org/protocol/disco#items<http://jabber.org/protocol/muc<"));
+
+ CPPUNIT_ASSERT_EQUAL(ByteArray::create("\x42\x06\xb2\x3c\xa6\xb0\xa6\x43\xd2\x0d\x89\xb0\x4f\xf5\x8c\xf7\x8b\x80\x96\xed"), sha.getHash());
+ }
+
+ void testGetHash_TwoGetHash() {
+ SHA1 sha;
+ sha.update(ByteArray::create("client/pc//Exodus 0.9.1<http://jabber.org/protocol/caps<http://jabber.org/protocol/disco#info<http://jabber.org/protocol/disco#items<http://jabber.org/protocol/muc<"));
+
+ sha.getHash();
+
+ CPPUNIT_ASSERT_EQUAL(ByteArray::create("\x42\x06\xb2\x3c\xa6\xb0\xa6\x43\xd2\x0d\x89\xb0\x4f\xf5\x8c\xf7\x8b\x80\x96\xed"), sha.getHash());
+ }
+
+ void testGetHash_InterleavedUpdate() {
+ SHA1 sha;
+
+ sha.update(ByteArray::create("client/pc//Exodus 0.9.1<http://jabber.org/protocol/caps<"));
+ sha.getHash();
+ sha.update(ByteArray::create("http://jabber.org/protocol/disco#info<http://jabber.org/protocol/disco#items<http://jabber.org/protocol/muc<"));
+
+ CPPUNIT_ASSERT_EQUAL(ByteArray::create("\x42\x06\xb2\x3c\xa6\xb0\xa6\x43\xd2\x0d\x89\xb0\x4f\xf5\x8c\xf7\x8b\x80\x96\xed"), sha.getHash());
+ }
+
+
+ void testGetHash_NoData() {
+ SHA1 sha;
+ sha.update(std::vector<unsigned char>());
+
+ CPPUNIT_ASSERT_EQUAL(ByteArray::create("\xda\x39\xa3\xee\x5e\x6b\x4b\x0d\x32\x55\xbf\xef\x95\x60\x18\x90\xaf\xd8\x07\x09"), sha.getHash());
+ }
+
+ void testGetHashStatic() {
ByteArray result(SHA1::getHash("client/pc//Exodus 0.9.1<http://jabber.org/protocol/caps<http://jabber.org/protocol/disco#info<http://jabber.org/protocol/disco#items<http://jabber.org/protocol/muc<"));
CPPUNIT_ASSERT_EQUAL(ByteArray("\x42\x06\xb2\x3c\xa6\xb0\xa6\x43\xd2\x0d\x89\xb0\x4f\xf5\x8c\xf7\x8b\x80\x96\xed"), result);
}
- void testGetHash_Twice() {
+ void testGetHashStatic_Twice() {
ByteArray input("client/pc//Exodus 0.9.1<http://jabber.org/protocol/caps<http://jabber.org/protocol/disco#info<http://jabber.org/protocol/disco#items<http://jabber.org/protocol/muc<");
SHA1::getHash(input);
ByteArray result(SHA1::getHash(input));
@@ -35,7 +82,7 @@ class SHA1Test : public CppUnit::TestFixture {
CPPUNIT_ASSERT_EQUAL(ByteArray("\x42\x06\xb2\x3c\xa6\xb0\xa6\x43\xd2\x0d\x89\xb0\x4f\xf5\x8c\xf7\x8b\x80\x96\xed"), result);
}
- void testGetHash_NoData() {
+ void testGetHashStatic_NoData() {
ByteArray result(SHA1::getHash(ByteArray()));
CPPUNIT_ASSERT_EQUAL(ByteArray("\xda\x39\xa3\xee\x5e\x6b\x4b\x0d\x32\x55\xbf\xef\x95\x60\x18\x90\xaf\xd8\x07\x09"), result);