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ANSI X9.9 uses DES for its crypto - these keys are 56 bits long, or 112 bits for 3DES. The financial world mostly moved to 3DES a few years back so keys will generally be 112 bits. Normally they have parity bits added (1 per 7 bits of key), so are transmitted as 64 bit (single DES) or 128 bit (triple DES) values. When presented in human-readable form, they ...



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