An Elliptic Curve Based Schnorr Cloud Security Model in Distributed Environment

Algorithm 1

Hybrid Cloud Security Algorithm.

Input: Outsource field (),

Output: Response of TPA (TRUE or FALSE) ()

()    Initialize domain parameters ()

()    Begin

()    Choose a point in elliptic curve ().

()    Select pseudorandom number as a secret key .

()    Public key      // Key pair generation

()    Select the random number within the range ()

()    Hash value of message blocks

()    Random point

()    Calculate

() Calculate

               // Signature set creation

() Generate block tag for each block

() Client generates Index Hash Table (IHT) with server oriented parameters , , and AAI ()

() Generate hash table IHT

() Unique hash value () = record in index Hash Table ).

() = difference between existing and new entries in IHT

() If ()

() Update the hash value in table

() Else

() Goto step ()

() end       // Proof generation

() Check and

() if (check ≠ )

() terminate the process

() else

()

() If ()

() output = error

() else

()

() if (temp == σ)

() = TRUE

() else

() = FALSE

() end       // Proof verification

() if ( = TRUE)

() = blooming(message, integer, hash value)

() else

() Goto step ()

() end