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Man Pages
YKPARSE(1) YubiKey C Library Manual YKPARSE(1)

ykgenerate - construct and encrypt an OTP from given data

ykgenerate AESKEY YK_INTERNALNAME YK_COUNTER YK_LOW YK_HIGH YK_USE

Generate OTPs by encrypting given values under the given encryption key.

AESKEY
The 16-character AES-128 key to use in hex.
YK_INTERNALNAME
Hex encoded internal identity (48 bit).
YK_COUNTER
Hex encoded counter (16 bit).
YK_LOW
Hex encoded timestamp low (16 bit).
YK_HIGH
Hex encoded timestamp high (8bit).
YK_USE
Hex encoded use (8 bit).

Typical usage of the tool is as follows.
ykgenerate ecde18dbe76fbd0c33330f1c354871db 8792ebfe26cc 0013 c0a8 00 10
Use ykparse(1) to decode the resulting OTP.

YubiKeys can be obtained from Yubico: http://www.yubico.com/
Version 1.13 yubico-c

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