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A “cost” (N) that is to be determined. For initial implemention we use 2^12 2^14 = 16384. For improved security we expect to move to 2^16,. 2^17 or 2^18 for production, but the exact value still needs to be determined.
A block size (r) of 8 - this is the default.
Parallelization (p) of 1 - this is the default.
A keylen (output) of 8 bytes = 16 hex digits.
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