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besser82 / libxcrypt

Extended crypt library for descrypt, md5crypt, bcrypt, and others
GNU Lesser General Public License v2.1
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some undefined reference (utils.c) #133

Closed 0n1cOn3 closed 3 years ago

0n1cOn3 commented 3 years ago

Hey

Iv compiled lxcrypt under Ubuntu 20.04 and run make and i am getting the following error:

gcc -pipe -Wall -D_LINUX -D_OPENSSL_MD4 -g3 asleap.c -o asleap common.o utils.o sha1.o -lpcap -lxcrypt -lcrypto /usr/bin/ld: utils.o: in function DesEncrypt': /home/hx/tmp/asleap/utils.c:179: undefined reference tosetkey' /usr/bin/ld: /home/hx/tmp/asleap/utils.c:182: undefined reference to `encrypt' collect2: error: ld returned 1 exit status make: *** [Makefile:32: asleap] Error 1

0n1cOn3 commented 3 years ago

Oops, wrong project!

zackw commented 3 years ago

@0n1cOn3 FYI, setkey and encrypt implement the obsolete DES block cipher. This cipher is no longer considered secure, as modern computer hardware can crack it by brute force. Also, these functions are awkward to use, slow, and not thread-safe.

I see that asleap is a penetration testing tool, so it may still have legitimate uses for DES, but it should be using the implementation in libcrypto. libcrypto is actually a general-purpose cryptography library, unlike libxcrypt; it has a much nicer API for symmetric encryption.