Yes, but only for very specific data. If you stored the results, you'd have a lookup table of a tonne of 'salts' that appended to the transaction data. The only

Yes, but only for very specific data. If you stored the results, you'd have a lookup table of a tonne of 'salts' that appended to the transaction data. The only real danger is hash collisions I guess - but MD5 is a broken encryption scheme anyway.