@AUTO PALENGTH

• Decide after the privacy amplification process, the key reduction amount is calculated by the system or decided by the user.

Note:If calculated by the system, the formula is:

paKeyLength_tmp = eckey_len_block - eve_info_estimate - safe_factor

[eve_info_estimate = eckey_len_block*binary_entropy_function(QBER)]

[I(Eve_shannon_info) <= 2^(-s)ln(2) ; s = safe_factor]

• Is store as autoPaLength in the fortran code.

example

@AUTO_PALENGTH
.TRUE.

Which mean the key reduction amount will calculated by the system like the formula above.