Source Forge provides MD5 and SHA1 hashes (click the view details icon) for the dban-2.2.8_i586.iso
These are the values for the copy I downloaded on 7/18/14. MD5 and SHA1 do match.
Last modified: 2013-11-22 (15.5 MB)
MD5: D076D4BC510EB39F57196773172AD072
SHA1: 3CD23D557765C8CE8138A0FEC5ABE3DF32E9BE15
SHA256: 73FC9F22F9061ED5E7BFA43FDC329B0E541391B348C06B4A9CBCCA47C45A19E6