CD-ROM Digest MD5 For Linux

CD-ROM Digest MD5 is a quick and dirty program to compute checksum of individual track.

· size (read) · MD5 digest

· multi track CD-ROM · mode 1 · Linux ioctl() · libmhash

· DVD · Audio CD · Multi session · Other operating system

· Track are often bigger than the data written inside · The program will report an error at the end of the data · I don't know the way to detect the end of data. · The checksum is good, and the size too.

· Track shorter than 4s -> 300 frames -> 614400 bytes are padded · To check the checksum, pad the img/iso file to 614400 and run md5sum

Requirements:

· libmhash, or port it to OpenSSL, Gcrypt or other.

Run "make" or

gcc -W -Wall cd5.c -o cd5 -lmhash

$ ./cd5

Track 1 to 3 (3 tracks) ioctl(/dev/cdrom, CDROMREADMODE1(1277)) failed: Input/output error Track 1, data, 0 + 1429 | 2615296 22597f64d164d509ef988b4ae97d3ad2 ioctl(/dev/cdrom, CDROMREADMODE1(1729)) failed: Input/output error Track 2, data, 1429 + 452 | 614400 c8605c7db3dd78fba70c2030d339f22b ioctl(/dev/cdrom, CDROMREADMODE1(4001)) failed: Input/output error Track 3, data, 1881 + 2272 | 4341760 8084e5945813a02415d08fb027d9ea97

For the ioctl() errors, see above. Just check that track size match ISO file size (except for file under 614400 bytes). One rule: if digest mismatch there's an error.