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Every stream of data that travels through the channel is encrypted using AES encryption and is stored in database in encrypted form. So, here we define a highly secured model of a multi-tenant database protected by different encryption algorithms. However, the customers are often reluctant to store their highly confidential data using multi-tenant database in the fear of their information being exposed to other tenants either due to some application bug or any passive or active attack on the database. The application is planned to virtually partition its data and configuration and tenant is provided with a customized virtual application. Multi-tenancy which is an important feature of cloud computing provides a concept named multi-tenant database is a relational model-based database architecture where single instance of the database servers multiple customers called Tenants. In SaaS cloud provider provides their services to their customer's on rental basis which is usually very less as compared as paying for licensed applications. SaaS (Software as a Service) has been one of the major business models to provide cost saving Enterprise services to small and medium enterprises (SME). The popular IT giants such as Google, IBM, Microsoft, and Amazon have started their cloud computing infrastructure. Once this function has been called the key may not be used again.The Enterprise IT industry is undergoing a paradigm shift-with the help of cloud computing which is one of the main reasons. This should be called to clean up resources associated with Key. Same key data is being used multiple times. This permits the programmer to re-useĪ key and avoid the cost of re-generating the key schedule where the Note that the same key may be used toĮncrypt and decrypt data provided that the initialization vector is ::blowfish::Decrypt Key dataĭecipher data using the key. The result is a binaryĪrray the same size as the input of encrypted data. The data argument should be a binary array that is a Use a prepared key acquired by calling Init to encrypt the See MODES OF OPERATION for details about cipher modes. With ECB mode but is important for CBC mode. PROGRAMMING INTERFACE ::blowfish::Init mode keydata ivĬonstruct a new blowfish key schedule using the specified key data and The -pad option can be used toĬhange the padding character or to disable padding if the empty string Never add padding and instead will raise an error if the input is notĪ multiple of the block size. The blowfishĬommand will by default add nul characters to pad the input data to a Provided in units that are a multiple of 8 bytes. See MODES OF OPERATION for more about available modes andīlowfish is a 64-bit block cipher. Takes an 8 byte binary argument which defaults to 8 zeros. The -mode and -dir options are optional and default to cbc Schedule is quite an expensive operation in blowfish so it is worth String of variable length and is used to generate the blowfish IfĪn -out channel is given then the result will be written to Perform the blowfish algorithm on either the data providedīy the argument or on the data read from the -in channel. COMMANDS ::blowfish::blowfish ? -mode ? -dir ? -key keydata ? -iv vector? -out channel? -chunksize size? -pad padchar?