CD-ROM Digest MD5

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

It reports for each track:

· size (read)
· MD5 digest

Supports:

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

Doesn't support:

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

Known problem:

· 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.

Be aware:

· 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.

Build:

Run "make" or

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

Example:

$ ./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.