Will quantum computer break ring signatures?

Question

I knows quantum computer breaks elliptic curve math but what about ring signature? thanks

Answer 1

"Normal" ring signatures aren't broken (meaning the true signer is revealed) by QC, but their security certainly is (unforgeability). However, the traceable version Monero uses (for double-spending prevention) is indeed able to be broken (meaning public key linked to key image and thus signer revealed) due to the existence of a key image.