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ECDH: Use macro-based sizes in Everest x25519

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This commit is contained in:
Christoph M. Wintersteiger 2019-02-18 13:20:33 +00:00 committed by Janos Follath
parent 2f563e3482
commit 8592958205
1 changed files with 4 additions and 4 deletions
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8
3rdparty/everest/library/x25519.c vendored
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@ -68,7 +68,7 @@ int mbedtls_x25519_make_params( mbedtls_x25519_context *ctx, size_t *olen,
if( ( ret = f_rng( p_rng, ctx->our_secret, MBEDTLS_X25519_KEY_SIZE_BYTES ) ) != 0 )
return ret;
*olen = 36;
*olen = MBEDTLS_X25519_KEY_SIZE_BYTES + 4;
if( blen < *olen )
return( MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL );
@ -90,7 +90,7 @@ int mbedtls_x25519_make_params( mbedtls_x25519_context *ctx, size_t *olen,
int mbedtls_x25519_read_params( mbedtls_x25519_context *ctx,
const unsigned char **buf, const unsigned char *end )
{
if( end - *buf < 33 )
if( end - *buf < MBEDTLS_X25519_KEY_SIZE_BYTES + 1 )
return( MBEDTLS_ERR_ECP_BAD_INPUT_DATA );
if( ( *(*buf)++ != MBEDTLS_X25519_KEY_SIZE_BYTES ) )
@ -161,7 +161,7 @@ int mbedtls_x25519_make_public( mbedtls_x25519_context *ctx, size_t *olen,
if( ( ret = f_rng( p_rng, ctx->our_secret, MBEDTLS_X25519_KEY_SIZE_BYTES ) ) != 0 )
return ret;
*olen = 33;
*olen = MBEDTLS_X25519_KEY_SIZE_BYTES + 1;
if( blen < *olen )
return(MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL);
*buf++ = MBEDTLS_X25519_KEY_SIZE_BYTES;
@ -179,7 +179,7 @@ int mbedtls_x25519_make_public( mbedtls_x25519_context *ctx, size_t *olen,
int mbedtls_x25519_read_public( mbedtls_x25519_context *ctx,
const unsigned char *buf, size_t blen )
{
if( blen < 33 )
if( blen < MBEDTLS_X25519_KEY_SIZE_BYTES + 1 )
return(MBEDTLS_ERR_ECP_BUFFER_TOO_SMALL);
if( (*buf++ != MBEDTLS_X25519_KEY_SIZE_BYTES) )
return(MBEDTLS_ERR_ECP_BAD_INPUT_DATA);