72 lines
2.6 KiB
Text
72 lines
2.6 KiB
Text
# Notes on the wolfssl-fips project
|
|
|
|
First, if you did not get the FIPS files with your archive, you must contact
|
|
wolfSSL to obtain them.
|
|
|
|
The IDE/WIN/wolfssl-fips.sln solution is for the original FIPS #2425 certificate.
|
|
See IDE/WIN10/wolfssl-fips.sln for the FIPS v2 #3389 or later Visual Studio solution.
|
|
|
|
# Building the wolfssl-fips project
|
|
|
|
The wolfCrypt FIPS library for Windows is a part of the wolfSSL library. It
|
|
must be built as a static library, for the moment.
|
|
|
|
The library project is built with Whole Program Optimization disabled. This is
|
|
required so that necessary components of the library are not optimized away.
|
|
There are two functions added to the library that are used as markers in
|
|
memory for the in-core memory check of the code. WPO consolidates them into a
|
|
single function. WPO also optimizes away the automatic FIPS entry function.
|
|
|
|
Each of the source files inside the FIPS boundary defines their own code and
|
|
constant section. The code section names start with ".fipsA$" and the constant
|
|
section names start with ".fipsB$". Each subsection has a letter to organize
|
|
them in a specific order. This specific ordering puts marker functions and
|
|
constants on either end of the boundary so it can be hashed.
|
|
|
|
|
|
# In Core Memory Test
|
|
|
|
The In Core Memory test calculates a checksum (HMAC-SHA256) of the wolfCrypt
|
|
FIPS library code and constant data and compares it with a known value in
|
|
the code.
|
|
|
|
The Randomized Base Address setting needs to be disabled on the 32-bit builds
|
|
but can be enabled on the 64-bit builds. In the 32-bit mode the addresses
|
|
being different throws off the in-core memory calculation. It looks like in
|
|
64-bit mode the library uses all offsets, so the core hash calculation
|
|
is the same every time.
|
|
|
|
The "verifyCore" check value in the source fips_test.c needs to be updated when
|
|
building the code. The POS performs this check and the default failure callback
|
|
will print out the calculated checksum. When developing your code, copy this
|
|
value and paste it back into your code in the verifyCore initializer then
|
|
rebuild the code. When statically linking, you may have to recalculate your
|
|
check value when changing your application.
|
|
|
|
|
|
# Build Options
|
|
|
|
The default build options should be the proper default set of options:
|
|
|
|
* HAVE_FIPS
|
|
* HAVE_THREAD_LS
|
|
* HAVE_AESGCM
|
|
* HAVE_HASHDRBG
|
|
* WOLFSSL_SHA384
|
|
* WOLFSSL_SHA512
|
|
* NO_HC128
|
|
* NO_RC4
|
|
* NO_RABBIT
|
|
* NO_DSA
|
|
* NO_MD4
|
|
|
|
The "NO" options explicitly disable algorithms that are not allowed in
|
|
FIPS mode.
|
|
|
|
Additionally one may enable:
|
|
|
|
* HAVE_ECC
|
|
* OPENSSL_EXTRA
|
|
* WOLFSSL_KEY_GEN
|
|
|
|
These settings are defined in IDE/WIN/user_settings.h.
|