$ sigtool --debug --info main.cvd
File: main.cvd
Build time: 11 Oct 2011 10:34 -0400
Version: 54
Signatures: 1044387
Functionality level: 60
Builder: sven
MD5: ef015484e18b983ddf08425e2dad6a3f
Digital signature: WOgEPNPkB4L0W5K9p1Wc+TE9DQOctxVBHGoR4pTqupMF6kJEVukelj0SPR6jTyczszfodstR+HPHG8mHjkvEtLzmmAz8WflU8vlf/XYW8Gjc6QuEetMN7yNy4JditkLVWCb/nf0gD943JTQ6lI+t7IoSqEk04jQncQ7nwNLIcZd
LibClamAV debug: Initialized 0.97.8 engine
LibClamAV debug: in cli_cvdload()
LibClamAV debug: MD5(.tar.gz) = ef015484e18b983ddf08425e2dad6a3f
LibClamAV debug: cli_versig: Decoded signature: ef015484e18b983ddf08425e2dad6a3f
LibClamAV debug: cli_versig: Digital signature is correct.
LibClamAV debug: in cli_tgzload()
LibClamAV debug: main.info loaded
LibClamAV debug: in cli_tgzload()
LibClamAV Error: cli_tgzload: Unknown type flag 'd'
LibClamAV debug: Cleaning up phishcheck
LibClamAV debug: Phishcheck cleaned up
ERROR: cvdinfo: Verification: Malformed database

$ sigtool --debug --info bytecode.cvd
File: bytecode.cvd
Build time: 13 Feb 2013 10:29 -0500
Version: 214
Signatures: 41
Functionality level: 63
Builder: neo
MD5: ff0c9c4e86dee9e705840537bd13ee71
Digital signature: w5Wj8A72FOT7uTGkl1VJ0hy1ud1T/Al8WRJkP7TPU+T/F9yrDYsQHRVtRPED6U0Ub487bZLj8chb+NtPFZ2w9HaD551UKec4+c7ZdhrR80WBkAu9TMO2PbmuHMq4G5aVXNCkLS6Bj9mwfocg71GZDNG2ATOIuge6FS8YDl48xPd
LibClamAV debug: Initialized 0.97.8 engine
LibClamAV debug: in cli_cvdload()
LibClamAV debug: MD5(.tar.gz) = ff0c9c4e86dee9e705840537bd13ee71
LibClamAV debug: cli_versig: Decoded signature: ff0c9c4e86dee9e705840537bd13ee71
LibClamAV debug: cli_versig: Digital signature is correct.
LibClamAV debug: in cli_tgzload()
LibClamAV Error: cli_tgzload: Unknown type flag 'y'
LibClamAV debug: Cleaning up phishcheck
LibClamAV debug: Phishcheck cleaned up
ERROR: cvdinfo: Verification: Malformed database