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| ** GNU General Public License Usage |
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| |
| #include <qcryptographichash.h> |
| |
| #ifdef Q_OS_SYMBIAN |
| #define _MD5_H_ // Needed to disable system header |
| #endif |
| |
| #include "../../3rdparty/md5/md5.h" |
| #include "../../3rdparty/md5/md5.cpp" |
| #include "../../3rdparty/md4/md4.h" |
| #include "../../3rdparty/md4/md4.cpp" |
| #include "../../3rdparty/sha1/sha1.cpp" |
| |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QCryptographicHashPrivate |
| { |
| public: |
| QCryptographicHash::Algorithm method; |
| union { |
| MD5Context md5Context; |
| md4_context md4Context; |
| Sha1State sha1Context; |
| }; |
| QByteArray result; |
| }; |
| |
| /*! |
| \class QCryptographicHash |
| |
| \brief The QCryptographicHash class provides a way to generate cryptographic hashes. |
| |
| \since 4.3 |
| |
| \ingroup tools |
| \reentrant |
| |
| QCryptographicHash can be used to generate cryptographic hashes of binary or text data. |
| |
| Currently MD4, MD5, and SHA-1 are supported. |
| */ |
| |
| /*! |
| \enum QCryptographicHash::Algorithm |
| |
| \value Md4 Generate an MD4 hash sum |
| \value Md5 Generate an MD5 hash sum |
| \value Sha1 Generate an SHA1 hash sum |
| */ |
| |
| /*! |
| Constructs an object that can be used to create a cryptographic hash from data using \a method. |
| */ |
| QCryptographicHash::QCryptographicHash(Algorithm method) |
| : d(new QCryptographicHashPrivate) |
| { |
| d->method = method; |
| reset(); |
| } |
| |
| /*! |
| Destroys the object. |
| */ |
| QCryptographicHash::~QCryptographicHash() |
| { |
| delete d; |
| } |
| |
| /*! |
| Resets the object. |
| */ |
| void QCryptographicHash::reset() |
| { |
| switch (d->method) { |
| case Md4: |
| md4_init(&d->md4Context); |
| break; |
| case Md5: |
| MD5Init(&d->md5Context); |
| break; |
| case Sha1: |
| sha1InitState(&d->sha1Context); |
| break; |
| } |
| d->result.clear(); |
| } |
| |
| /*! |
| Adds the first \a length chars of \a data to the cryptographic |
| hash. |
| */ |
| void QCryptographicHash::addData(const char *data, int length) |
| { |
| switch (d->method) { |
| case Md4: |
| md4_update(&d->md4Context, (const unsigned char *)data, length); |
| break; |
| case Md5: |
| MD5Update(&d->md5Context, (const unsigned char *)data, length); |
| break; |
| case Sha1: |
| sha1Update(&d->sha1Context, (const unsigned char *)data, length); |
| break; |
| } |
| d->result.clear(); |
| } |
| |
| /*! |
| \overload addData() |
| */ |
| void QCryptographicHash::addData(const QByteArray &data) |
| { |
| addData(data.constData(), data.length()); |
| } |
| |
| /*! |
| Returns the final hash value. |
| |
| \sa QByteArray::toHex() |
| */ |
| QByteArray QCryptographicHash::result() const |
| { |
| if (!d->result.isEmpty()) |
| return d->result; |
| |
| switch (d->method) { |
| case Md4: { |
| md4_context copy = d->md4Context; |
| d->result.resize(MD4_RESULTLEN); |
| md4_final(©, (unsigned char *)d->result.data()); |
| break; |
| } |
| case Md5: { |
| MD5Context copy = d->md5Context; |
| d->result.resize(16); |
| MD5Final(©, (unsigned char *)d->result.data()); |
| break; |
| } |
| case Sha1: { |
| Sha1State copy = d->sha1Context; |
| d->result.resize(20); |
| sha1FinalizeState(©); |
| sha1ToHash(©, (unsigned char *)d->result.data()); |
| } |
| } |
| return d->result; |
| } |
| |
| /*! |
| Returns the hash of \a data using \a method. |
| */ |
| QByteArray QCryptographicHash::hash(const QByteArray &data, Algorithm method) |
| { |
| QCryptographicHash hash(method); |
| hash.addData(data); |
| return hash.result(); |
| } |
| |
| QT_END_NAMESPACE |