Checksum Decoding or Key Delivery

I have a series of checksums that require a decoding function. If you can decode the checksums please make a bidding offer. If you have the SHA Universal KEY and IV and AES.CIPHER Code to decrypt the SHA digest; please offer a bid for the KEY and IV... (Budget: $250 - $750 AUD, Jobs: Algorithm, Cryptography, Data Analysis, Encryption, JavaScript, Security, Security Auditing, Software Architecture)