From d651e25be0bc0c11f4d3d7c72be8cfbbe82b3874 Mon Sep 17 00:00:00 2001 From: Jakub Jelen Date: Fri, 10 Sep 2021 18:39:00 +0200 Subject: [PATCH] Allow building libgcrypt without Brainpool curves * README: Document possibility to build without brainpool curves * cipher/ecc-curves.c: Conditionalize brainpool curves definitions * configure.ac: Implement possibility to build without brainpool curves * tests/curves.c: Skip brainpool curves if they are not built-in * tests/keygrip.c: Skip brainpool curves if they are not built-in -- Signed-off-by: Jakub Jelen --- README | 3 +++ cipher/ecc-curves.c | 4 ++++ configure.ac | 13 +++++++++++++ tests/curves.c | 46 ++++++++++++++++++++++++++++++--------------- tests/keygrip.c | 2 ++ 5 files changed, 53 insertions(+), 15 deletions(-) diff --git a/README b/README index 436b6cd4..1044109c 100644 --- a/README +++ b/README @@ -127,6 +127,9 @@ the list used with the current build the program tests/version may be used. + --disable-brainpool + Do not build in support for Brainpool curves. + --disable-endian-check Don't let configure test for the endianness but try to use the OS provided macros at compile diff --git a/cipher/ecc-curves.c b/cipher/ecc-curves.c index 7c86e12c..8fd95a9c 100644 --- a/cipher/ecc-curves.c +++ b/cipher/ecc-curves.c @@ -77,6 +77,7 @@ static const struct { "NIST P-521", "1.3.132.0.35" }, { "NIST P-521", "nistp521" }, /* rfc5656. */ +#ifdef ENABLE_BRAINPOOL { "brainpoolP160r1", "1.3.36.3.3.2.8.1.1.1" }, { "brainpoolP192r1", "1.3.36.3.3.2.8.1.1.3" }, { "brainpoolP224r1", "1.3.36.3.3.2.8.1.1.5" }, @@ -84,6 +85,7 @@ static const struct { "brainpoolP320r1", "1.3.36.3.3.2.8.1.1.9" }, { "brainpoolP384r1", "1.3.36.3.3.2.8.1.1.11"}, { "brainpoolP512r1", "1.3.36.3.3.2.8.1.1.13"}, +#endif /* ENABLE_BRAINPOOL */ { "GOST2001-test", "1.2.643.2.2.35.0" }, { "GOST2001-CryptoPro-A", "1.2.643.2.2.35.1" }, @@ -297,6 +299,7 @@ static const ecc_domain_parms_t domain_parms[] = 1 }, +#ifdef ENABLE_BRAINPOOL { "brainpoolP160r1", 160, 0, MPI_EC_WEIERSTRASS, ECC_DIALECT_STANDARD, "0xe95e4a5f737059dc60dfc7ad95b3d8139515620f", @@ -391,6 +394,7 @@ static const ecc_domain_parms_t domain_parms[] = "b2dcde494a5f485e5bca4bd88a2763aed1ca2b2fa8f0540678cd1e0f3ad80892", 1 }, +#endif /* ENABLE_BRAINPOOL */ { "GOST2001-test", 256, 0, MPI_EC_WEIERSTRASS, ECC_DIALECT_STANDARD, diff --git a/configure.ac b/configure.ac index 6efbf139..f4ac1887 100644 --- a/configure.ac +++ b/configure.ac @@ -614,6 +614,14 @@ AC_ARG_WITH(fips-module-version, AC_DEFINE_UNQUOTED(FIPS_MODULE_VERSION, "$fips_module_version", [Define FIPS module version for certification]) +# Implementation of the --disable-brainpool switch. +AC_MSG_CHECKING([whether we want to disable the use of brainpool curves]) +AC_ARG_ENABLE(brainpool, + AS_HELP_STRING([--disable-brainpool], + [Disable the brainpool curves]), + use_brainpool="$enableval",use_brainpool=yes) +AC_MSG_RESULT($use_brainpool) + # Implementation of the --disable-jent-support switch. AC_MSG_CHECKING([whether jitter entropy support is requested]) AC_ARG_ENABLE(jent-support, @@ -2466,6 +2474,10 @@ if test x"$ppccryptosupport" = xyes ; then AC_DEFINE(ENABLE_PPC_CRYPTO_SUPPORT,1, [Enable support for POWER 8 (PowerISA 2.07) crypto extension.]) fi +if test x"$use_brainpool" = xyes ; then + AC_DEFINE(ENABLE_BRAINPOOL, 1, + [Enable support for the brainpool curves.]) +fi if test x"$jentsupport" = xyes ; then AC_DEFINE(ENABLE_JENT_SUPPORT, 1, [Enable support for the jitter entropy collector.]) @@ -3296,6 +3308,7 @@ GCRY_MSG_WRAP([Enabled digest algorithms:],[$enabled_digests]) GCRY_MSG_WRAP([Enabled kdf algorithms: ],[$enabled_kdfs]) GCRY_MSG_WRAP([Enabled pubkey algorithms:],[$enabled_pubkey_ciphers]) GCRY_MSG_SHOW([Random number generator: ],[$random]) +GCRY_MSG_SHOW([Enabled Brainpool curves: ],[$use_brainpool]) GCRY_MSG_SHOW([Try using jitter entropy: ],[$jentsupport]) GCRY_MSG_SHOW([Using linux capabilities: ],[$use_capabilities]) GCRY_MSG_SHOW([FIPS module version: ],[$fips_module_version]) diff --git a/tests/curves.c b/tests/curves.c index 3c738171..8eb79565 100644 --- a/tests/curves.c +++ b/tests/curves.c @@ -33,7 +33,11 @@ #include "t-common.h" /* Number of curves defined in ../cipher/ecc-curves.c */ -#define N_CURVES 27 +#ifdef ENABLE_BRAINPOOL +# define N_CURVES 27 +#else +# define N_CURVES 20 +#endif /* A real world sample public key. */ static char const sample_key_1[] = @@ -52,6 +56,7 @@ static char const sample_key_1[] = static char const sample_key_1_curve[] = "NIST P-256"; static unsigned int sample_key_1_nbits = 256; +#ifdef ENABLE_BRAINPOOL /* A made up sample public key. */ static char const sample_key_2[] = "(public-key\n" @@ -68,6 +73,7 @@ static char const sample_key_2[] = " ))"; static char const sample_key_2_curve[] = "brainpoolP160r1"; static unsigned int sample_key_2_nbits = 160; +#endif /* ENABLE_BRAINPOOL */ static int in_fips_mode; @@ -113,6 +119,7 @@ check_matching (void) gcry_sexp_release (key); +#ifdef ENABLE_BRAINPOOL if (!in_fips_mode) { err = gcry_sexp_new (&key, sample_key_2, 0, 1); @@ -130,6 +137,7 @@ check_matching (void) gcry_sexp_release (key); } +#endif /* ENABLE_BRAINPOOL */ } #define TEST_ERROR_EXPECTED (1 << 0) @@ -185,20 +193,26 @@ check_get_params (void) { GCRY_PK_ECC, "1.3.132.0.35" }, { GCRY_PK_ECC, "nistp521" }, - { GCRY_PK_ECC, "brainpoolP160r1", TEST_NOFIPS }, - { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.1", TEST_NOFIPS }, - { GCRY_PK_ECC, "brainpoolP192r1", TEST_NOFIPS }, - { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.3", TEST_NOFIPS }, - { GCRY_PK_ECC, "brainpoolP224r1", TEST_NOFIPS }, - { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.5", TEST_NOFIPS }, - { GCRY_PK_ECC, "brainpoolP256r1", TEST_NOFIPS }, - { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.7", TEST_NOFIPS }, - { GCRY_PK_ECC, "brainpoolP320r1", TEST_NOFIPS }, - { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.9", TEST_NOFIPS }, - { GCRY_PK_ECC, "brainpoolP384r1", TEST_NOFIPS }, - { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.11", TEST_NOFIPS }, - { GCRY_PK_ECC, "brainpoolP512r1", TEST_NOFIPS }, - { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.13", TEST_NOFIPS }, +#ifdef ENABLE_BRAINPOOL +# define BRAINPOOL_FLAGS TEST_NOFIPS +#else +# define BRAINPOOL_FLAGS TEST_ERROR_EXPECTED +#endif /* ENABLE_BRAINPOOL */ + { GCRY_PK_ECC, "brainpoolP160r1", BRAINPOOL_FLAGS }, + { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.1", BRAINPOOL_FLAGS }, + { GCRY_PK_ECC, "brainpoolP192r1", BRAINPOOL_FLAGS }, + { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.3", BRAINPOOL_FLAGS }, + { GCRY_PK_ECC, "brainpoolP224r1", BRAINPOOL_FLAGS }, + { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.5", BRAINPOOL_FLAGS }, + { GCRY_PK_ECC, "brainpoolP256r1", BRAINPOOL_FLAGS }, + { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.7", BRAINPOOL_FLAGS }, + { GCRY_PK_ECC, "brainpoolP320r1", BRAINPOOL_FLAGS }, + { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.9", BRAINPOOL_FLAGS }, + { GCRY_PK_ECC, "brainpoolP384r1", BRAINPOOL_FLAGS }, + { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.11", BRAINPOOL_FLAGS }, + { GCRY_PK_ECC, "brainpoolP512r1", BRAINPOOL_FLAGS }, + { GCRY_PK_ECC, "1.3.36.3.3.2.8.1.1.13", BRAINPOOL_FLAGS }, +#undef BRAINPOOL_ERROR_EXPECTED { GCRY_PK_ECC, "GOST2001-test", TEST_NOFIPS }, { GCRY_PK_ECC, "1.2.643.2.2.35.0", TEST_NOFIPS }, @@ -282,6 +296,7 @@ check_get_params (void) gcry_sexp_release (param); +#ifdef ENABLE_BRAINPOOL if (!in_fips_mode) { param = gcry_pk_get_param (GCRY_PK_ECDSA, sample_key_2_curve); @@ -297,6 +312,7 @@ check_get_params (void) gcry_sexp_release (param); } +#endif /* ENABLE_BRAINPOOL */ /* Some simple tests */ for (idx=0; idx < DIM (tv); idx++) diff --git a/tests/keygrip.c b/tests/keygrip.c index 49bd71bc..fc4c17be 100644 --- a/tests/keygrip.c +++ b/tests/keygrip.c @@ -149,6 +149,7 @@ static struct " (q #04C8A4CEC2E9A9BC8E173531A67B0840DF345C32E261ADD780E6D83D56EFADFD5DE872F8B854819B59543CE0B7F822330464FBC4E6324DADDCD9D059554F63B344#)))", "\xE6\xDF\x94\x2D\xBD\x8C\x77\x05\xA3\xDD\x41\x6E\xFC\x04\x01\xDB\x31\x0E\x99\xB6" }, +#ifdef ENABLE_BRAINPOOL { GCRY_PK_ECC, "(public-key" @@ -197,6 +198,7 @@ static struct "\xD6\xE1\xBF\x43\xAC\x9B\x9A\x12\xE7\x3F", 1 }, +#endif /*ENABLE_BRAINPOOL */ { /* Ed25519 standard */ GCRY_PK_ECC, "(public-key" -- 2.34.1