diff options
Diffstat (limited to 'src/libcryptobox/curve25519/curve25519.c')
| -rw-r--r-- | src/libcryptobox/curve25519/curve25519.c | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/src/libcryptobox/curve25519/curve25519.c b/src/libcryptobox/curve25519/curve25519.c index 1870d4987..df795a855 100644 --- a/src/libcryptobox/curve25519/curve25519.c +++ b/src/libcryptobox/curve25519/curve25519.c @@ -53,6 +53,9 @@ CURVE25519_DECLARE(avx); #endif +CURVE25519_DECLARE(ref); +#define CURVE25519_REF CURVE25519_IMPL(0, "ref", ref) + #if !defined(__LP64__) CURVE25519_DECLARE(donna32); #define CURVE25519_GENERIC CURVE25519_IMPL(0, "donna32", donna32) @@ -68,8 +71,52 @@ static const curve25519_impl_t curve25519_list[] = { #endif }; +const guchar secA[] = {0x5A, 0xC9, 0x9F, 0x33, 0x63, 0x2E, 0x5A, 0x76, 0x8D, + 0xE7, 0xE8, 0x1B, 0xF8, 0x54, 0xC2, 0x7C, 0x46, 0xE3, + 0xFB, 0xF2, 0xAB, 0xBA, 0xCD, 0x29, 0xEC, 0x4A, 0xFF, + 0x51, 0x73, 0x69, 0xC6, 0x60}; +const guchar secB[] = {0x47, 0xDC, 0x3D, 0x21, 0x41, 0x74, 0x82, 0x0E, 0x11, + 0x54, 0xB4, 0x9B, 0xC6, 0xCD, 0xB2, 0xAB, 0xD4, 0x5E, + 0xE9, 0x58, 0x17, 0x05, 0x5D, 0x25, 0x5A, 0xA3, 0x58, + 0x31, 0xB7, 0x0D, 0x32, 0x60}; + static const curve25519_impl_t *curve25519_opt = &curve25519_list[0]; +static gboolean +curve25519_test_impl (const curve25519_impl_t *impl) +{ + guchar sec_local[32], sec_ref[32], + pubA[32], pubB[32]; + + curve25519_impl_t ref_impl = CURVE25519_REF; + + ref_impl.scalarmult (pubA, secA, curve25519_basepoint); + ref_impl.scalarmult (pubB, secB, curve25519_basepoint); + + impl->scalarmult (sec_local, secA, pubB); + ref_impl.scalarmult (sec_ref, secA, pubB); + + if (memcmp (sec_local, sec_ref, sizeof (sec_ref)) != 0) { + return FALSE; + } + + impl->scalarmult (sec_local, secB, pubA); + ref_impl.scalarmult (sec_ref, secB, pubA); + + if (memcmp (sec_local, sec_ref, sizeof (sec_ref)) != 0) { + return FALSE; + } + + impl->scalarmult (sec_local, secB, pubA); + impl->scalarmult (sec_ref, secA, pubB); + + if (memcmp (sec_local, sec_ref, sizeof (sec_ref)) != 0) { + return FALSE; + } + + return TRUE; +} + void curve25519_load (void) { @@ -83,6 +130,7 @@ curve25519_load (void) } } } + g_assert (curve25519_test_impl (curve25519_opt)); } int |