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wolfcrypt: add Caliptra Root of Trust CryptoCb port #10579

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7c52321
wolfcrypt: add Caliptra Root of Trust CryptoCb port
MarkAtwood Apr 5, 2026
ab44f06
caliptra: add hw-model test; fix ECDSA and HMAC
MarkAtwood Apr 5, 2026
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13 changes: 13 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -487,6 +487,9 @@ wrapper/Ada/obj/
wolfssl/debug-trace-error-codes.h
wolfssl/debug-untrace-error-codes.h

# AI tool configuration
.ai/
.claude/
AGENTS.md
CLAUDE.md

Expand All @@ -495,3 +498,13 @@ compile_commands.json

# Python cache
__pycache__/

# Beads issue tracker
.beads/
.dolt/
*.db
.beads-credential-key

# Caliptra hw-model test binary
wolfcrypt/src/port/caliptra/sim/caliptra_test_bin
wolfcrypt/src/port/caliptra/sim/*.o
41 changes: 40 additions & 1 deletion configure.ac
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Expand Up @@ -3201,6 +3201,41 @@ case "$ENABLED_STSAFE" in
esac


# Caliptra Cryptographic Mailbox
AC_ARG_ENABLE([caliptra],
[AS_HELP_STRING([--enable-caliptra],[enable Caliptra cryptographic mailbox CryptoCb port; implies --enable-cryptocb (default: disabled)])],
[ ENABLED_CALIPTRA=$enableval ],
[ ENABLED_CALIPTRA=no ]
)
if test "x$ENABLED_CALIPTRA" = "xyes"
then
AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_CALIPTRA"
AM_CFLAGS="$AM_CFLAGS -DWOLF_CRYPTO_CB_FREE"
# Caliptra requires WOLF_CRYPTO_CB and WOLF_CRYPTO_CB_FREE.
# ENABLED_CRYPTOCB is forced to yes below, alongside the cryptocb
# AC_ARG_ENABLE processing, so this declaration ordering is robust.
fi

# Caliptra software simulator: provides caliptra_mailbox_exec() so that
# libwolfssl and example binaries link without a real hardware backend.
# Enabled by default when --enable-caliptra is on; disable for production
# builds that supply their own caliptra_mailbox_exec() implementation.
AC_ARG_ENABLE([caliptra-sim],
[AS_HELP_STRING([--disable-caliptra-sim],[Disable bundled Caliptra software simulator; requires integrator-supplied caliptra_mailbox_exec() (default: enabled when --enable-caliptra)])],
[ ENABLED_CALIPTRA_SIM=$enableval ],
[ ENABLED_CALIPTRA_SIM=yes ]
)
if test "x$ENABLED_CALIPTRA" = "xno"
then
ENABLED_CALIPTRA_SIM=no
fi
if test "x$ENABLED_CALIPTRA_SIM" = "xyes"
then
AM_CFLAGS="$AM_CFLAGS -DWOLFSSL_CALIPTRA_SIM"
AC_MSG_WARN([Caliptra software simulator enabled (default). This is for offline development and test only -- production builds must pass --disable-caliptra-sim and supply a real caliptra_mailbox_exec() implementation.])
fi


# NXP SE050
# Example: "./configure --with-se050=/home/pi/simw_top"
ENABLED_SE050="no"
Expand Down Expand Up @@ -10620,7 +10655,7 @@ AC_ARG_ENABLE([cryptocb-sw-test],
[ ENABLED_CRYPTOCB_SW_TEST=yes ]
)

if test "x$ENABLED_PKCS11" = "xyes" || test "x$ENABLED_WOLFTPM" = "xyes" || test "$ENABLED_CAAM" != "no"
if test "x$ENABLED_PKCS11" = "xyes" || test "x$ENABLED_WOLFTPM" = "xyes" || test "$ENABLED_CAAM" != "no" || test "x$ENABLED_CALIPTRA" = "xyes"
then
ENABLED_CRYPTOCB=yes
fi
Expand Down Expand Up @@ -12370,6 +12405,8 @@ AM_CONDITIONAL([BUILD_IOTSAFE_HWRNG],[test "x$ENABLED_IOTSAFE_HWRNG" = "xyes"])
AM_CONDITIONAL([BUILD_SE050],[test "x$ENABLED_SE050" = "xyes"])
AM_CONDITIONAL([BUILD_STSAFE],[test "x$ENABLED_STSAFE" != "xno"])
AM_CONDITIONAL([BUILD_TROPIC01],[test "x$ENABLED_TROPIC01" = "xyes"])
AM_CONDITIONAL([BUILD_CALIPTRA],[test "x$ENABLED_CALIPTRA" = "xyes"])
AM_CONDITIONAL([BUILD_CALIPTRA_SIM],[test "x$ENABLED_CALIPTRA_SIM" = "xyes"])
AM_CONDITIONAL([BUILD_KDF],[test "x$ENABLED_KDF" = "xyes"])
AM_CONDITIONAL([BUILD_HMAC],[test "x$ENABLED_HMAC" = "xyes"])
AM_CONDITIONAL([BUILD_ERROR_STRINGS],[test "x$ENABLED_ERROR_STRINGS" = "xyes"])
Expand Down Expand Up @@ -12940,6 +12977,8 @@ echo " * IoT-Safe HWRNG: $ENABLED_IOTSAFE_HWRNG"
echo " * NXP SE050: $ENABLED_SE050"
echo " * STMicro STSAFE: $ENABLED_STSAFE"
echo " * TROPIC01: $ENABLED_TROPIC01"
echo " * Caliptra: $ENABLED_CALIPTRA"
echo " * Caliptra Sim: $ENABLED_CALIPTRA_SIM"
echo " * Maxim Integrated MAXQ10XX: $ENABLED_MAXQ10XX"
echo " * PSA: $ENABLED_PSA"
echo " * System CA certs: $ENABLED_SYS_CA_CERTS"
Expand Down
10 changes: 10 additions & 0 deletions wolfcrypt/src/include.am
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Expand Up @@ -244,6 +244,16 @@ if BUILD_TROPIC01
src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/port/tropicsquare/tropic01.c
endif

if BUILD_CALIPTRA
src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/port/caliptra/caliptra_port.c
endif
if BUILD_CALIPTRA_SIM
src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/port/caliptra/sim/caliptra_sim.c
endif
EXTRA_DIST += wolfcrypt/src/port/caliptra/caliptra_port.c \
wolfcrypt/src/port/caliptra/README.md \
wolfcrypt/src/port/caliptra/sim/caliptra_sim.c

if BUILD_PSA
src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/port/psa/psa.c
src_libwolfssl@LIBSUFFIX@_la_SOURCES += wolfcrypt/src/port/psa/psa_hash.c
Expand Down
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