2 .\" Copyright (c) 2003 Sam Leffler, Errno Consulting
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28 .Dd September 12, 2004
33 .Nd SafeNet crypto accelerator
37 .Nm sysctl Va hw.safe.debug
38 .Nm sysctl Va hw.safe.dump
39 .Nm sysctl Va hw.safe.rnginterval
40 .Nm sysctl Va hw.safe.rngbufsize
41 .Nm sysctl Va hw.safe.rngmaxalarm
45 driver supports cards containing SafeNet crypto accelerator chips.
49 driver registers itself to accelerate DES, Triple-DES, AES, MD5-HMAC,
50 SHA1-HMAC, and NULL operations for
55 On all models, the driver registers itself to provide random data to the
58 Periodically the driver will poll the hardware RNG and retrieve
59 data for use by the system.
60 If the driver detects that the hardware RNG is resonating with any local
61 signal, it will reset the oscillators that generate random data.
64 settings control this procedure:
65 .Va hw.safe.rnginterval
66 specifies the time, in seconds, between polling operations,
67 .Va hw.safe.rngbufsize
68 specifies the number of 32-bit words to retrieve on each poll,
70 .Va hw.safe.rngmaxalarm
71 specifies the threshold for resetting the oscillators.
73 When the driver is compiled with
77 variables are provided for debugging purposes:
79 can be set to a non-zero value to enable debugging messages to be sent
80 to the console for each cryptographic operation,
82 is a write-only variable that can be used to force driver state to be sent
86 to dump the current state of the descriptor ring,
89 to dump the hardware DMA registers,
93 to dump the hardware interrupt registers.
97 driver supports cards containing any of the following chips:
98 .Bl -tag -width "SafeNet 1141" -offset indent
100 The original chipset.
101 Supports DES, Triple-DES, AES, MD5, and SHA-1
102 symmetric crypto operations, RNG, public key operations, and full IPsec
105 A faster version of the 1141.
115 Public key support is not implemented.