A small update to zipdump: this version displays the ZIP comment (if present) and also counts unique bytes, i.e. the number of different byte values found in the data.
zipdump_v0_0_4.zip (https)
MD5: 64EE6575309654B6671554D0A4DA50E5
SHA256: C323C0580E95F87406A72A542A7FBF5DE39EBEF7CAFC970A7C428CA1E870F9CF
Didier Stevens 