md5substr

Multi-threaded SIMD program to generate collisions for truncated MD5 hashes, e.g. substr(md5(pass), 0, 8)

This can also be used to generate "vanity" MD5 hashes

Compile

cc -o md5substr md5substr.c -march=native -O4 -funroll-loops -pthread

Usage

./md5substr <target> <offset>

Examples

If the hash "bab3d011" was generated with substr(md5(pass), 0, 8),

./md5substr bab3d011 0

If the hash "deadbea7" was generated with substr(md5(pass), 16, 8),

./md5substr deadbea7 16