Quantis software release Q3 2017
The latest release of the Quantis Software is available to download (see above) and features:
Quantis comes with a cross-operating system application called EasyQuantis, which allows you to read random numbers in the following formats:
The random numbers can be displayed in a window or saved in a file. The application can be used to access multiple Quantis generators. It features a graphical user interface but can also be used in command line mode.
The application also includes advanced functions such as scaling or randomness extraction.
A Command Line Interface can also be used to access Quantis and integrate EasyQuantis in scripts.
The Quantis library can be used to access the Quantis Quantum Random Number Generator. The library API is identical for the PCI, PCIe and USB library and is available on all supported operating systems.
The library offers the possibility to produce random binary data, integers and floating point numbers. It can be used to access multiple Quantis generators and includes advanced functionalities such as random data scaling.
The QuantisExtensions library implements a randomness extractor which can be used to postprocess the output of the Quantis TRNG.
Wrappers allowing to access the Quantis library, as well as sample source code, are provided for the following programming languages:
Quantis also supports the brand new C++11 random device API, which allows easy integration in existing boost or C++11 applications.
What is a checksum?
A checksum is a fixed-size datum computed from an arbitrary block of digital data for the purpose of detecting accidental errors that may have been introduced during its transmission or storage. The integrity of the data can be checked at any later time by recomputing the checksum and comparing it with the stored one. If the checksums do not match, the data was almost certainly altered (either intentionally or unintentionally).
Different functions can be used to compute a checksum. Examples include MD5 and SHA1.
Computing a checksum under Windows
Checksum computing is not featured in windows as a standard functionality, but a several software tools exist for this.
For example, one can use the HashCheck Shell Extension
Computing a checksum under Linux
Under Linux, computing a checksum is very simple. The following commands can be used in the command line interface:
– sha1sum filename
– md5sum filename