Fault and Tolerant Method Using Advanced Encryption Standard for Images
An Earth Observation (EO) satellites are satellites specifically designed to observe Earth from orbit, similarly reconnanissance satellites but intended for non-millitary uses such as environmental monitoring meterology, map making etc. AES (Advanced Encryption Standard) provides the highest level of security by utilizing the newest and strongest 128 bit AES encryption algorithm to encrypt and authenticate the data. At the same time while encryption process immunity of encryption is taken into the account. Five modes of AES have been used to perform security on satellite data. The different modes are ECB, CBC, OFB, CFB and CTR. All the above techniques except OFB lead to fault during data transmission to ground because of noisy channels. It is due to Single Event Upsets (SEU).