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Diffstat (limited to 'qpid/cpp/src/qmf/Hash.cpp')
-rw-r--r-- | qpid/cpp/src/qmf/Hash.cpp | 45 |
1 files changed, 45 insertions, 0 deletions
diff --git a/qpid/cpp/src/qmf/Hash.cpp b/qpid/cpp/src/qmf/Hash.cpp new file mode 100644 index 0000000000..86738dda2f --- /dev/null +++ b/qpid/cpp/src/qmf/Hash.cpp @@ -0,0 +1,45 @@ +/* + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + * + */ + +#include "qmf/Hash.h" + +using namespace qmf; + +Hash::Hash() +{ + data[0] = 0x5A5A5A5A5A5A5A5ALL; + data[1] = 0x5A5A5A5A5A5A5A5ALL; +} + +void Hash::update(const char* s, uint32_t len) +{ + uint64_t* first = &data[0]; + uint64_t* second = &data[1]; + + for (uint32_t idx = 0; idx < len; idx++) { + uint64_t recycle = ((*second & 0xff00000000000000LL) >> 56); + *second = *second << 8; + *second |= ((*first & 0xFF00000000000000LL) >> 56); + *first = *first << 8; + *first = *first + (uint64_t) s[idx] + recycle; + } +} + |