Random forgery attacks against DTW-based online signature verification algorithm
Daigo Muramatsu · 2011
Skilled forged signatures are one of the most difficult to distinguish from genuine signatures and randomly forged signatures are considered to be less difficult than skilled forged signatures. However, since the FARs are generally calculated by averaging over all considered signatures (all considered signers), it might be possible that attacks using some selected signer's random forged signatures are stronger than those using skilled forged signatures. Therefore, we investigated the FARs against randomly forged signatures written by each signer. We evaluated a DTW-based online signature verification algorithm by using the SVC2004 database task 1 and task 2. The experimental results show that attacks using some signers' signatures are stronger than those using skilled forged signatures.