Potential Vulnerabilities: In the above toy stream cipher application, assume that Alice uses your software as is$,$ and after encrypting n blocks of data, her computer completely crashes and then re$-$start just code to encrypt the rest of the data. Does this create a specific vulnerability in the encryption process? Describe an attack that can exploit the current state of the implementation in this event $($the answer should have ideally $5-6$ sentences, backed up with some basic equations to support the arguments$).$