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diff --git a/secure/lib/libcrypt/README b/secure/lib/libcrypt/README deleted file mode 100644 index ab8af5a..0000000 --- a/secure/lib/libcrypt/README +++ /dev/null @@ -1,98 +0,0 @@ - - FreeSec - NetBSD libcrypt replacement - - David Burren <davidb@werj.com.au> - Release 1.0, March 1994 - - Document ref: $FreeBSD$ - - -Description -=========== -This library is a drop-in replacement for the libcrypt used in U.S. copies -of NetBSD, duplicating that library's functionality. A suite of verification -and benchmark tools is provided. - -FreeSec 1.0 is an original implementation of the DES algorithm and the -crypt(3) interfaces used in Unix-style operating systems. It was produced -in Australia and as such is not covered by U.S. export restrictions (at -least for copies that remain outside the U.S.). - - -History -======= -An earlier version of the FreeSec library was built using the UFC-crypt -package that is distributed as part of the GNU library. UFC-crypt did not -support the des_cipher() or des_setkey() functions, nor the new-style -crypt with long keys. These were implemented in FreeSec 0.2, but at least -one bug remained, where encryption would only succeed if either the salt -or the plaintext was zero. Because of its heritage FreeSec 0.2 was covered -by the GNU Library Licence. - -FreeSec 1.0 is an original implementation by myself, and has been tested -against the verification suite I'd been using with FreeSec 0.2 (this is not -encumbered by any licence). FreeSec 1.0 is covered by a Berkeley-style -licence, which better fits into the *BSD hierarchy than the earlier GNU -licence. - - -Why should you use FreeSec? -=========================== -FreeSec is intended as a replacement for the U.S.-only NetBSD libcrypt, -to act as a baseline for encryption functionality. - -Some other packages (such as Eric Young's libdes package) are faster and -more complete than FreeSec, but typically have different licencing -arrangements. While some applications will justify the use of these -packages, the idea here is that everyone should have access to *at least* -the functionality of FreeSec. - - -Performance of FreeSec 1.0 -========================== -I compare below the performance of three libcrypt implementations. As can be -seen, it's between the U.S. library and UFC-crypt. While the performance of -FreeSec 1.0 is good enough to keep me happy for now, I hope to improve it in -future versions. I was interested to note that while UFC-crypt is faster on -a 386, hardware characteristics can have markedly different effects on each -implementation. - - -386DX40, 128k cache | U.S. BSD | FreeSec 1.0 | FreeSec 0.2 -CFLAGS=-O2 | | | -========================+===============+===============+================== -crypt (alternate keys) | 317 | 341 | 395 - crypt/sec | | | -------------------------+---------------+---------------+------------------ -crypt (constant key) | 317 | 368 | 436 - crypt/sec | | | -------------------------+---------------+---------------+------------------ -des_cipher( , , , 1) | 6037 | 7459 | 3343 - blocks/sec | | | -------------------------+---------------+---------------+------------------ -des_cipher( , , , 25) | 8871 | 9627 | 15926 - blocks/sec | | | - -Notes: The results tabled here are the average over 10 runs. - The entry/exit code for FreeSec 0.2's des_cipher() is particularly - inefficient, thus the anomalous result for single encryptions. - - -As an experiment using a machine with a larger register set and an -obscenely fast CPU, I obtained the following results: - - 60 MHz R4400 | FreeSec 1.0 | FreeSec 0.2 - ========================+================================= - crypt (alternate keys) | 2545 | 2702 - crypt/sec | | - ------------------------+--------------------------------- - crypt (constant key) | 2852 | 2981 - crypt/sec | | - ------------------------+--------------------------------- - des_cipher( , , , 1) | 56443 | 21409 - blocks/sec | | - ------------------------+--------------------------------- - des_cipher( , , , 25) | 82531 | 18276 - blocks/sec | | - -Obviously your mileage will vary with your hardware and your compiler... |
