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Information technology. Open systems interconnection. Conformance testing methodology and framework - The Tree and tabular combined notation (TTCN). Original standard BS ISO IEC 9646-3-1998 in PDF full version. Additional info + preview on request

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Information processing. Volume and file structure of CD-ROM for information interchange. Original standard BS ISO IEC 9660-2023 in PDF full version. Additional info + preview on request

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Information technology. Security techniques. Digital signature schemes giving message recovery - Integer factorization based mechanisms. Original standard BS ISO IEC 9796-2-2010 in PDF full version. Additional info + preview on request

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Information technology. Security techniques. Digital signature schemes giving message recovery - Discrete logarithm based mechanisms. Original standard BS ISO IEC 9796-3-2006 (2014) in PDF full version. Additional info + preview on request

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Information technology. Security techniques. Message Authentication Codes (MACs) - Mechanisms using a block cipher. Original standard BS ISO IEC 9797-1-2011 + A1-2023 in PDF full version. Additional info + preview on request

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Information security. Message authentication codes (MACs) - Mechanisms using a dedicated hash-function. Original standard BS ISO IEC 9797-2-2021 (2024) in PDF full version. Additional info + preview on request

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