HP-UX AAA Server A.08.00.01 Administrator's Guide

Table 16-4 Attributes for Configuring OTP Authentication (continued)
DescriptionConfiguration TypeAttribute Name
recalculate the next OTP values and check
against the received OTP to synchronize the
sequence counter. If this attribute is not
specified, the value of system wide
configuration entry otp_lookup_window is
used as the default value.
Default Value 10
Value Type integer
Specifies an eight-byte counter value. The
HMAC algorithm requires this counter value
to generate an OTP.
This counter value must be synchronized
between the OTP generator and the HP-UX
User level configuration
only
HOtp-Seq-Counter
AAA Server. This attribute is mandatory for
each user.
Value Type unsigned char
Specifies the unique shared secret between the
OTP generator and the HP-UX AAA Server
User level configuration
only
Otp-Shared-Secret
that generates the OTP. The HMAC algorithm
requires this counter value to generate an OTP.
The length of the shared secret must be at least
128 bits (RFC 4226 recommends 160 bits). This
attribute is mandatory for each user.
Value Type binary string
A unique serial number for OTP generators
(token devices or software that generates
OTP).
User level configuration
only
Otp-Token-Serial-
Number
Specifies the lock counter. If the number of
consecutive failed authentication attempts is
User, realm, or
system-wide level
configuration
Otp-Token-Lock-
Counter
greater than the configured
Otp-Token-Lock-Counter value, where
the time interval between two consecutive
failed authentication attempts is less than 60
seconds, the HP-UX AAA Server updates the
token status to LOCKED. If this attribute is not
specified, the value of system-wide
configuration item
otp_token_lock_counter is used as the
default value.
Default Value 6
Specifies the OTP length. Tokens can generate
OTPs having six, seven, or eight digits. If this
User, realm, or
system-wide level
configuration
Otp-Token-Length
attribute is not specified, the value of
Configuring OTP Authentication on the HP-UX AAA Server 189