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authorRemko Tronçon <git@el-tramo.be>2013-04-26 20:07:58 (GMT)
committerRemko Tronçon <git@el-tramo.be>2013-04-27 11:02:06 (GMT)
commit5d8c328e236f57d7390d32f9ea7bd17a31e1e740 (patch)
treebebe606707a6b835fe3fd15e694d629b5e420947 /Swiften/Crypto/CommonCryptoCryptoProvider.cpp
parentaa131405927fc7f597ed06aff71abb0a30b59926 (diff)
downloadswift-5d8c328e236f57d7390d32f9ea7bd17a31e1e740.zip
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Removing third-party hash implementations.
Using library/platform implementation instead. Change-Id: I2457c2dad80e6fdda023a7f31c3906ff10fe09ed
Diffstat (limited to 'Swiften/Crypto/CommonCryptoCryptoProvider.cpp')
-rw-r--r--Swiften/Crypto/CommonCryptoCryptoProvider.cpp167
1 files changed, 167 insertions, 0 deletions
diff --git a/Swiften/Crypto/CommonCryptoCryptoProvider.cpp b/Swiften/Crypto/CommonCryptoCryptoProvider.cpp
new file mode 100644
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--- /dev/null
+++ b/Swiften/Crypto/CommonCryptoCryptoProvider.cpp
@@ -0,0 +1,167 @@
+/*
+ * Copyright (c) 2013 Remko Tronçon
+ * Licensed under the GNU General Public License.
+ * See the COPYING file for more information.
+ */
+
+#include <Swiften/Crypto/CommonCryptoCryptoProvider.h>
+
+#include <CommonCrypto/CommonDigest.h>
+#include <CommonCrypto/CommonHMAC.h>
+#include <cassert>
+
+#include <Swiften/Crypto/Hash.h>
+#include <Swiften/Base/ByteArray.h>
+#include <boost/numeric/conversion/cast.hpp>
+
+using namespace Swift;
+
+namespace {
+ class SHA1Hash : public Hash {
+ public:
+ SHA1Hash() : finalized(false) {
+ if (!CC_SHA1_Init(&context)) {
+ assert(false);
+ }
+ }
+
+ ~SHA1Hash() {
+ }
+
+ virtual Hash& update(const ByteArray& data) SWIFTEN_OVERRIDE {
+ return updateInternal(data);
+ }
+
+ virtual Hash& update(const SafeByteArray& data) SWIFTEN_OVERRIDE {
+ return updateInternal(data);
+ }
+
+ virtual std::vector<unsigned char> getHash() {
+ assert(!finalized);
+ std::vector<unsigned char> result(CC_SHA1_DIGEST_LENGTH);
+ CC_SHA1_Final(vecptr(result), &context);
+ return result;
+ }
+
+ private:
+ template<typename ContainerType>
+ Hash& updateInternal(const ContainerType& data) {
+ assert(!finalized);
+ if (!CC_SHA1_Update(&context, vecptr(data), boost::numeric_cast<CC_LONG>(data.size()))) {
+ assert(false);
+ }
+ return *this;
+ }
+
+ private:
+ CC_SHA1_CTX context;
+ bool finalized;
+ };
+
+ class MD5Hash : public Hash {
+ public:
+ MD5Hash() : finalized(false) {
+ if (!CC_MD5_Init(&context)) {
+ assert(false);
+ }
+ }
+
+ ~MD5Hash() {
+ }
+
+ virtual Hash& update(const ByteArray& data) SWIFTEN_OVERRIDE {
+ return updateInternal(data);
+ }
+
+ virtual Hash& update(const SafeByteArray& data) SWIFTEN_OVERRIDE {
+ return updateInternal(data);
+ }
+
+ virtual std::vector<unsigned char> getHash() {
+ assert(!finalized);
+ std::vector<unsigned char> result(CC_MD5_DIGEST_LENGTH);
+ CC_MD5_Final(vecptr(result), &context);
+ return result;
+ }
+
+ private:
+ template<typename ContainerType>
+ Hash& updateInternal(const ContainerType& data) {
+ assert(!finalized);
+ if (!CC_MD5_Update(&context, vecptr(data), boost::numeric_cast<CC_LONG>(data.size()))) {
+ assert(false);
+ }
+ return *this;
+ }
+
+ private:
+ CC_MD5_CTX context;
+ bool finalized;
+ };
+
+ template<typename T>
+ class HMACHash : public Hash {
+ public:
+ HMACHash(const T& key) : finalized(false) {
+ CCHmacInit(&context, kCCHmacAlgSHA1, vecptr(key), key.size());
+ }
+
+ ~HMACHash() {
+ }
+
+ virtual Hash& update(const ByteArray& data) SWIFTEN_OVERRIDE {
+ return updateInternal(data);
+ }
+
+ virtual Hash& update(const SafeByteArray& data) SWIFTEN_OVERRIDE {
+ return updateInternal(data);
+ }
+
+ virtual std::vector<unsigned char> getHash() {
+ assert(!finalized);
+ std::vector<unsigned char> result(CC_SHA1_DIGEST_LENGTH);
+ CCHmacFinal(&context, vecptr(result));
+ return result;
+ }
+
+ private:
+ template<typename ContainerType>
+ Hash& updateInternal(const ContainerType& data) {
+ assert(!finalized);
+ CCHmacUpdate(&context, vecptr(data), boost::numeric_cast<CC_LONG>(data.size()));
+ return *this;
+ }
+
+ private:
+ CCHmacContext context;
+ bool finalized;
+ };
+}
+
+CommonCryptoCryptoProvider::CommonCryptoCryptoProvider() {
+}
+
+CommonCryptoCryptoProvider::~CommonCryptoCryptoProvider() {
+}
+
+Hash* CommonCryptoCryptoProvider::createSHA1() {
+ return new SHA1Hash();
+}
+
+Hash* CommonCryptoCryptoProvider::createMD5() {
+ return new MD5Hash();
+}
+
+Hash* CommonCryptoCryptoProvider::createHMACSHA1(const SafeByteArray& key) {
+ return new HMACHash<SafeByteArray>(key);
+}
+
+Hash* CommonCryptoCryptoProvider::createHMACSHA1(const ByteArray& key) {
+ return new HMACHash<ByteArray>(key);
+}
+
+
+bool CommonCryptoCryptoProvider::isMD5AllowedForCrypto() const {
+ return true;
+}
+