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3rdparty: Make proper use of mbedtls_platform_zeroize in Everest x25519

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This commit is contained in:
Christoph M. Wintersteiger 2019-02-15 16:25:48 +00:00 committed by Janos Follath
parent fb779f1700
commit 088ef49681
1 changed files with 3 additions and 2 deletions
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5
3rdparty/everest/library/x25519.c vendored
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@ -41,7 +41,7 @@
*/
void mbedtls_x25519_init( mbedtls_x25519_context *ctx )
{
memset( ctx, 0, sizeof( mbedtls_x25519_context ) );
mbedtls_platform_zeroize( ctx, sizeof( mbedtls_x25519_context ) );
}
/*
@ -138,7 +138,8 @@ int mbedtls_x25519_calc_secret( mbedtls_x25519_context *ctx, size_t *olen,
Hacl_Curve25519_crypto_scalarmult( buf, ctx->our_secret, ctx->peer_point);
/* Wipe the DH secret and don't let the peer chose a small subgroup point */
memset( ctx->our_secret, 0, MBEDTLS_X25519_KEY_SIZE_BYTES );
mbedtls_platform_zeroize( ctx->our_secret, MBEDTLS_X25519_KEY_SIZE_BYTES );
if( memcmp( buf, ctx->our_secret, MBEDTLS_X25519_KEY_SIZE_BYTES) == 0 )
return MBEDTLS_ERR_ECP_RANDOM_FAILED;