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14 Dy.Ex.Engr.c. The bid hash values are digitally signed using valid Class - II or Class - III DigitalCertificate issued any Certifying Authority. The Contractors are required toobtain Digital Certificate in advance.d. After the hash value of bid data is generated, the Contractors cannot make anychange / addition in its bid data. The bidder may modify bids before thedeadline for Bid Preperation and Hash Submission as per Time Schedulementioned in the Tender documents.e. This stage will be applicable during both, Pre-bid / Pre-qualification andFinancial Bidding Processes.5. Close for Bidding (Generation of Super Hash Values):After the expiry of the cut - off time of Bid Preparation and Hash Submissionstage to be completed by the Contractors has lapsed, the Tender will be closedby the Tender Authority.The Tender Authority from PWD shall generate and digitally sign the SuperHash values (Seals).6. Decryption and Re-encryption of Bids (submitting the Bids online):After the time for generation of Super Hash values by the Tender Authorityfrom PWD has lapsed, the Contractors have to make the online payment ofRs. 1,038/- towards the fees of the Service Provider.After making online payment towards Fees of Service Provider, the Contractorsare required to decrypt their bid data using their Digital Certificate andimmediately reencrypt their bid data using the Public Key of the TenderingAuthority. The Public Key of the Tendering Authority is attached to the Tenderduring the Close for Bidding stage.Note: The details of the Processing Fees shall be verified and matched duringthe Technical Opening stage.At this time, the Contractors are also required to upload the files for which theygenerated the Hash values during the Bid Preparation and Hash Submissionstage.The Bid Data and Documents of only those Contractors who have submittedtheir Bid Hashes (Seals) within the stipulated time (as per the Tender TimeSchedule), will be available for decryption and re-encryption and to upload therelevant documents from Briefcase. A Contractor who has not submitted hisBid Preparation and Hash Submission stage within the stipulated time will notbe allowed to decrypt / reencrypt the Bid data / submit documents during thestage of Decryption and Reencryption of Bids (submitting the Bids online).Signature of Contractor No. of Corrections Executive Engineer