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Michael Brown
327378a764
All of our current digest algorithms (MD4, MD5, SHA-1, and the SHA-2 family) use a Merkle-Damgård construction, with only the compression function, the initial digest values, the field sizes, and the endianness differing between algorithms. Provide a common implementation for Merkle-Damgård hash algorithms to reduce code size. Values are now held as host-endian quantities, with any swapping performed byte-by-byte as data is accumulated (using a compile-time constant that is XORed with the byte index). For the SHA family of algorithms, the values w[] are now calculated iteratively as we progress through the main loop: this substantially reduces the stack space required for the compression function. Signed-off-by: Michael Brown <mcb30@ipxe.org>
iPXE network bootloader
iPXE is the leading open source network boot firmware. It provides a full PXE implementation enhanced with additional features such as:
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boot from a web server via HTTP or HTTPS,
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boot from an iSCSI, FCoE, or AoE SAN,
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control the boot process with a script,
You can use iPXE to replace the existing PXE ROM on your network card, or you can chainload into iPXE to obtain the features of iPXE without the hassle of reflashing.
iPXE is free, open-source software licensed under the GNU GPL (with some portions under GPL-compatible licences).
You can download the rolling release binaries (built from the latest commit), or use the most recent stable release.
For full documentation, visit the iPXE website.