Perl Module String::CRC32 This packages provides a perl module to generate checksums from strings and from files. Written 19990310 by Soenke J. Peters . The checksums are the same as those calculated by ZMODEM, PKZIP, PICCHECK and many others. There's another perl module called String::CRC which allows to calculate not only 32 bit CRC numbers, but the generated sums differ from those of the programs mentioned above. Installation: "perl Makefile.PL" "make" "make test" "make install" If you find any bugs, please send me a good description (or a patch ;-) ). Thanks to s0lar(at)gmx.li who sent me a patch to replace PerlIO_getc with PerlIO_read to improve performance. Have fun, Soenke J. Peters Hamburg, Germany