This paper articulates how Service Oriented Architecture (SOA) and cloud computing together can facilitate technology setup in Telemetry (TM) processing with a case study from the Egyptian space program (ESP) and a comparative study with space situational awareness (SSA) program in European space agency (ESA), Moreover, this paper illustrates how cloud computing services and deployment models enable software and hardware decoupling and making flexible TM data analysis possible. The large amount of available computational resources facilitates a shift in approaches to software development, deployment and operations

Recently, many chaos-based stream cipher algorithms have been developed. Traditional chaos stream cipher is based on XORing a generated secure random number sequence based on chaotic maps (e.g. logistic map, Bernoulli Map, Tent Map etc.) with the original image to get the encrypted image, This type of stream cipher seems to be vulnerable to chosen plaintext attacks. This paper introduces a new stream cipher algorithm based on dynamic substitution box. The new algorithm uses one substitution box (S-box) and a chaotic shuffling process. Each byte in the plain image vector is substituted using a different S-box to get the cipher image vector. This algorithm is designed to be invulnerable to chosen plaintext attacks. In addition, this algorithm is more secured compared to conventional stream cipher.

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This paper illustrates how a grid computing architecture and a service oriented architecture (SOA) will accelerate telemetry (TM) data processing and make flexible TM data analysis service. Moreover, this paper will articulate grid computational and data resources management, tacking a TM system as a case study from the Egyptian space program (ESP).

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