jBCrypt is a Java implementation of OpenBSD's Blowfish password
hashing code, compatible with the canonical C implementation of the
bcrypt algorithm.
This system hashes passwords using a version of Bruce Schneier's
Blowfish block cipher with modifications designed to raise the cost
of off-line password cracking and frustrate fast hardware implementation.
The computation cost of the algorithm is parametised, so it can be
increased as computers get faster. The intent is to make a compromise
of a password database less likely to result in an attacker gaining
knowledge of the plaintext passwords (e.g. using John the Ripper).
ASM is an all purpose Java bytecode manipulation and analysis framework.
It can be used to modify existing classes or dynamically generate
classes, directly in binary form. Provided common transformations and
analysis algorithms allow to easily assemble custom complex
transformations and code analysis tools.
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The GNU Java getopt classes support short and long argument parsing in a
manner 100% compatible with the version of GNU getopt with a mostly
compatible programmer's interface as well. Note that this is a port, not
a new implementation.
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JNA provides Java programs easy access to native shared libraries
without writing anything but Java code -- no JNI or native code is
required. This functionality is comparable to Windows' Platform/Invoke
and Python's ctypes. Access is dynamic at runtime without code
generation.
JNA allows you to call directly into native functions using natural Java
method invocation. The Java call looks just like it does in native code.
Most calls require no special handling or configuration; no boilerplate
or generated code is required.
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