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I am trying to generate an MD5 hash with Qt. The hash I generate needs to be compatible with other standard MD5 hashes generated with other languages such as PHP.
This code does not give me the desired results:
QString encodedPass = QString(QCryptographicHash::hash(("myPassword"),QCryptographicHash::Md5)); The result is "Þ±SoHu÷Õ?!?¡¯×L" instead of "deb1536f480475f7d593219aa1afd74c". Can someone show me what I am doing wrong?
866
The MD5 hashing algorithm uses a complex mathematical formula to create a hash. It converts data into blocks of specific sizes and manipulates that data a number of times. While this is happening, the algorithm adds a unique value into the calculation and converts the result into a small signature or hash.
Generally, two files can have the same md5 hash only if their contents are exactly the same. Even a single bit of variation will generate a completely different hash value. There is one caveat, though: An md5 sum is 128 bits (16 bytes).
It generally takes 3-4 hours to transfer via NC and then 40 minutes to get the md5sum. The security of the hash is not an issue in this case.
PHP gives it to you in hex, Qt in binary. Convert it to hex using QByteArray::toHex.
QString blah = QString(QCryptographicHash::hash(("myPassword"),QCryptographicHash::Md5).toHex()) If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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