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  5. Sign Hmac

    SIGN HMAC

    HMAC data.

    Description

    Perform an HMAC operation in device and return the result.

    Shell Example

    Perform an HMAC operation using the HMAC Key 0x7cf2:

    yubihsm> hmac 0 0x7cf2 666f6f626172
4c17e17300a51a3f8aeeba131e9c680e4e40b429aa1d547807efd8e3d95ccd39

    Protocol Details

    Command

    Tc = 0x53

    Lc = 2 + LD

    Vc = I || D

    I := Object ID of the HMAC Key (2 bytes)

    D := Data to HMAC

    Response

    Tr = 0xd3

    Lr = LR

    Vr = R

    R := HMAC Response, 20, 32, 48 or 64 bytes depending on the Algorithm.