Import mbedtls-2.27.0

Imports Mbed TLS 2.27.0 from https://github.com/ARMmbed/mbedtls.git
commit f71e28780841 ("Merge pull request #843 from
paul-elliott-arm/mbedtls-2.27.0rc0-pr") (tag mbedtls-2.27.0, v2.27.0).

Files that are not needed are removed.

 cd lib/libmbedtls
 rm -rf mbedtls
 cp -R path/to/mbedtls-2.27.0/mbedtls .
 cd mbedtls
 rm CMakeLists.txt DartConfiguration.tcl Makefile
 rm .gitignore .travis.yml .pylintrc .globalrc .mypy.ini BRANCHES.md
 rm include/.gitignore include/CMakeLists.txt library/.gitignore
 rm library/CMakeLists.txt library/Makefile
 rm -rf .git .github doxygen configs programs scripts tests visualc yotta
 rm -rf 3rdparty ChangeLog.d docs
 rm -rf include/mbedtls/config_psa.h include/psa
 rm library/psa_* library/mps_*
 cd ..
 git add mbedtls

This is a complete overwrite of previous code so earlier changes in the
previous branch import/mbedtls-2.22.0 will be added on top of this commit.

Signed-off-by: Jerome Forissier <jerome@forissier.org>
diff --git a/lib/libmbedtls/mbedtls/library/aes.c b/lib/libmbedtls/mbedtls/library/aes.c
index c6a45f3..3f61642 100644
--- a/lib/libmbedtls/mbedtls/library/aes.c
+++ b/lib/libmbedtls/mbedtls/library/aes.c
@@ -1,8 +1,8 @@
-// SPDX-License-Identifier: Apache-2.0
 /*
  *  FIPS-197 compliant AES implementation
  *
- *  Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
+ *  Copyright The Mbed TLS Contributors
+ *  SPDX-License-Identifier: Apache-2.0
  *
  *  Licensed under the Apache License, Version 2.0 (the "License"); you may
  *  not use this file except in compliance with the License.
@@ -15,8 +15,6 @@
  *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  *  See the License for the specific language governing permissions and
  *  limitations under the License.
- *
- *  This file is part of mbed TLS (https://tls.mbed.org)
  */
 /*
  *  The AES block cipher was designed by Vincent Rijmen and Joan Daemen.
@@ -25,11 +23,7 @@
  *  http://csrc.nist.gov/publications/fips/fips197/fips-197.pdf
  */
 
-#if !defined(MBEDTLS_CONFIG_FILE)
-#include "mbedtls/config.h"
-#else
-#include MBEDTLS_CONFIG_FILE
-#endif
+#include "common.h"
 
 #if defined(MBEDTLS_AES_C)
 
@@ -736,6 +730,7 @@
 
     return( ret );
 }
+#endif /* !MBEDTLS_AES_SETKEY_DEC_ALT */
 
 #if defined(MBEDTLS_CIPHER_MODE_XTS)
 static int mbedtls_aes_xts_decode_keys( const unsigned char *key,
@@ -814,8 +809,6 @@
 }
 #endif /* MBEDTLS_CIPHER_MODE_XTS */
 
-#endif /* !MBEDTLS_AES_SETKEY_DEC_ALT */
-
 #define AES_FROUND(X0,X1,X2,X3,Y0,Y1,Y2,Y3)                     \
     do                                                          \
     {                                                           \
@@ -873,63 +866,56 @@
                                   unsigned char output[16] )
 {
     int i;
-    uint32_t *RK, X0, X1, X2, X3, Y0, Y1, Y2, Y3;
+    uint32_t *RK = ctx->rk;
+    struct
+    {
+        uint32_t X[4];
+        uint32_t Y[4];
+    } t;
 
-    RK = ctx->rk;
-
-    GET_UINT32_LE( X0, input,  0 ); X0 ^= *RK++;
-    GET_UINT32_LE( X1, input,  4 ); X1 ^= *RK++;
-    GET_UINT32_LE( X2, input,  8 ); X2 ^= *RK++;
-    GET_UINT32_LE( X3, input, 12 ); X3 ^= *RK++;
+    GET_UINT32_LE( t.X[0], input,  0 ); t.X[0] ^= *RK++;
+    GET_UINT32_LE( t.X[1], input,  4 ); t.X[1] ^= *RK++;
+    GET_UINT32_LE( t.X[2], input,  8 ); t.X[2] ^= *RK++;
+    GET_UINT32_LE( t.X[3], input, 12 ); t.X[3] ^= *RK++;
 
     for( i = ( ctx->nr >> 1 ) - 1; i > 0; i-- )
     {
-        AES_FROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 );
-        AES_FROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 );
+        AES_FROUND( t.Y[0], t.Y[1], t.Y[2], t.Y[3], t.X[0], t.X[1], t.X[2], t.X[3] );
+        AES_FROUND( t.X[0], t.X[1], t.X[2], t.X[3], t.Y[0], t.Y[1], t.Y[2], t.Y[3] );
     }
 
-    AES_FROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 );
+    AES_FROUND( t.Y[0], t.Y[1], t.Y[2], t.Y[3], t.X[0], t.X[1], t.X[2], t.X[3] );
 
-    X0 = *RK++ ^ \
-            ( (uint32_t) FSb[ ( Y0       ) & 0xFF ]       ) ^
-            ( (uint32_t) FSb[ ( Y1 >>  8 ) & 0xFF ] <<  8 ) ^
-            ( (uint32_t) FSb[ ( Y2 >> 16 ) & 0xFF ] << 16 ) ^
-            ( (uint32_t) FSb[ ( Y3 >> 24 ) & 0xFF ] << 24 );
+    t.X[0] = *RK++ ^ \
+            ( (uint32_t) FSb[ ( t.Y[0]       ) & 0xFF ]       ) ^
+            ( (uint32_t) FSb[ ( t.Y[1] >>  8 ) & 0xFF ] <<  8 ) ^
+            ( (uint32_t) FSb[ ( t.Y[2] >> 16 ) & 0xFF ] << 16 ) ^
+            ( (uint32_t) FSb[ ( t.Y[3] >> 24 ) & 0xFF ] << 24 );
 
-    X1 = *RK++ ^ \
-            ( (uint32_t) FSb[ ( Y1       ) & 0xFF ]       ) ^
-            ( (uint32_t) FSb[ ( Y2 >>  8 ) & 0xFF ] <<  8 ) ^
-            ( (uint32_t) FSb[ ( Y3 >> 16 ) & 0xFF ] << 16 ) ^
-            ( (uint32_t) FSb[ ( Y0 >> 24 ) & 0xFF ] << 24 );
+    t.X[1] = *RK++ ^ \
+            ( (uint32_t) FSb[ ( t.Y[1]       ) & 0xFF ]       ) ^
+            ( (uint32_t) FSb[ ( t.Y[2] >>  8 ) & 0xFF ] <<  8 ) ^
+            ( (uint32_t) FSb[ ( t.Y[3] >> 16 ) & 0xFF ] << 16 ) ^
+            ( (uint32_t) FSb[ ( t.Y[0] >> 24 ) & 0xFF ] << 24 );
 
-    X2 = *RK++ ^ \
-            ( (uint32_t) FSb[ ( Y2       ) & 0xFF ]       ) ^
-            ( (uint32_t) FSb[ ( Y3 >>  8 ) & 0xFF ] <<  8 ) ^
-            ( (uint32_t) FSb[ ( Y0 >> 16 ) & 0xFF ] << 16 ) ^
-            ( (uint32_t) FSb[ ( Y1 >> 24 ) & 0xFF ] << 24 );
+    t.X[2] = *RK++ ^ \
+            ( (uint32_t) FSb[ ( t.Y[2]       ) & 0xFF ]       ) ^
+            ( (uint32_t) FSb[ ( t.Y[3] >>  8 ) & 0xFF ] <<  8 ) ^
+            ( (uint32_t) FSb[ ( t.Y[0] >> 16 ) & 0xFF ] << 16 ) ^
+            ( (uint32_t) FSb[ ( t.Y[1] >> 24 ) & 0xFF ] << 24 );
 
-    X3 = *RK++ ^ \
-            ( (uint32_t) FSb[ ( Y3       ) & 0xFF ]       ) ^
-            ( (uint32_t) FSb[ ( Y0 >>  8 ) & 0xFF ] <<  8 ) ^
-            ( (uint32_t) FSb[ ( Y1 >> 16 ) & 0xFF ] << 16 ) ^
-            ( (uint32_t) FSb[ ( Y2 >> 24 ) & 0xFF ] << 24 );
+    t.X[3] = *RK++ ^ \
+            ( (uint32_t) FSb[ ( t.Y[3]       ) & 0xFF ]       ) ^
+            ( (uint32_t) FSb[ ( t.Y[0] >>  8 ) & 0xFF ] <<  8 ) ^
+            ( (uint32_t) FSb[ ( t.Y[1] >> 16 ) & 0xFF ] << 16 ) ^
+            ( (uint32_t) FSb[ ( t.Y[2] >> 24 ) & 0xFF ] << 24 );
 
-    PUT_UINT32_LE( X0, output,  0 );
-    PUT_UINT32_LE( X1, output,  4 );
-    PUT_UINT32_LE( X2, output,  8 );
-    PUT_UINT32_LE( X3, output, 12 );
+    PUT_UINT32_LE( t.X[0], output,  0 );
+    PUT_UINT32_LE( t.X[1], output,  4 );
+    PUT_UINT32_LE( t.X[2], output,  8 );
+    PUT_UINT32_LE( t.X[3], output, 12 );
 
-    mbedtls_platform_zeroize( &X0, sizeof( X0 ) );
-    mbedtls_platform_zeroize( &X1, sizeof( X1 ) );
-    mbedtls_platform_zeroize( &X2, sizeof( X2 ) );
-    mbedtls_platform_zeroize( &X3, sizeof( X3 ) );
-
-    mbedtls_platform_zeroize( &Y0, sizeof( Y0 ) );
-    mbedtls_platform_zeroize( &Y1, sizeof( Y1 ) );
-    mbedtls_platform_zeroize( &Y2, sizeof( Y2 ) );
-    mbedtls_platform_zeroize( &Y3, sizeof( Y3 ) );
-
-    mbedtls_platform_zeroize( &RK, sizeof( RK ) );
+    mbedtls_platform_zeroize( &t, sizeof( t ) );
 
     return( 0 );
 }
@@ -953,63 +939,56 @@
                                   unsigned char output[16] )
 {
     int i;
-    uint32_t *RK, X0, X1, X2, X3, Y0, Y1, Y2, Y3;
+    uint32_t *RK = ctx->rk;
+    struct
+    {
+        uint32_t X[4];
+        uint32_t Y[4];
+    } t;
 
-    RK = ctx->rk;
-
-    GET_UINT32_LE( X0, input,  0 ); X0 ^= *RK++;
-    GET_UINT32_LE( X1, input,  4 ); X1 ^= *RK++;
-    GET_UINT32_LE( X2, input,  8 ); X2 ^= *RK++;
-    GET_UINT32_LE( X3, input, 12 ); X3 ^= *RK++;
+    GET_UINT32_LE( t.X[0], input,  0 ); t.X[0] ^= *RK++;
+    GET_UINT32_LE( t.X[1], input,  4 ); t.X[1] ^= *RK++;
+    GET_UINT32_LE( t.X[2], input,  8 ); t.X[2] ^= *RK++;
+    GET_UINT32_LE( t.X[3], input, 12 ); t.X[3] ^= *RK++;
 
     for( i = ( ctx->nr >> 1 ) - 1; i > 0; i-- )
     {
-        AES_RROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 );
-        AES_RROUND( X0, X1, X2, X3, Y0, Y1, Y2, Y3 );
+        AES_RROUND( t.Y[0], t.Y[1], t.Y[2], t.Y[3], t.X[0], t.X[1], t.X[2], t.X[3] );
+        AES_RROUND( t.X[0], t.X[1], t.X[2], t.X[3], t.Y[0], t.Y[1], t.Y[2], t.Y[3] );
     }
 
-    AES_RROUND( Y0, Y1, Y2, Y3, X0, X1, X2, X3 );
+    AES_RROUND( t.Y[0], t.Y[1], t.Y[2], t.Y[3], t.X[0], t.X[1], t.X[2], t.X[3] );
 
-    X0 = *RK++ ^ \
-            ( (uint32_t) RSb[ ( Y0       ) & 0xFF ]       ) ^
-            ( (uint32_t) RSb[ ( Y3 >>  8 ) & 0xFF ] <<  8 ) ^
-            ( (uint32_t) RSb[ ( Y2 >> 16 ) & 0xFF ] << 16 ) ^
-            ( (uint32_t) RSb[ ( Y1 >> 24 ) & 0xFF ] << 24 );
+    t.X[0] = *RK++ ^ \
+            ( (uint32_t) RSb[ ( t.Y[0]       ) & 0xFF ]       ) ^
+            ( (uint32_t) RSb[ ( t.Y[3] >>  8 ) & 0xFF ] <<  8 ) ^
+            ( (uint32_t) RSb[ ( t.Y[2] >> 16 ) & 0xFF ] << 16 ) ^
+            ( (uint32_t) RSb[ ( t.Y[1] >> 24 ) & 0xFF ] << 24 );
 
-    X1 = *RK++ ^ \
-            ( (uint32_t) RSb[ ( Y1       ) & 0xFF ]       ) ^
-            ( (uint32_t) RSb[ ( Y0 >>  8 ) & 0xFF ] <<  8 ) ^
-            ( (uint32_t) RSb[ ( Y3 >> 16 ) & 0xFF ] << 16 ) ^
-            ( (uint32_t) RSb[ ( Y2 >> 24 ) & 0xFF ] << 24 );
+    t.X[1] = *RK++ ^ \
+            ( (uint32_t) RSb[ ( t.Y[1]       ) & 0xFF ]       ) ^
+            ( (uint32_t) RSb[ ( t.Y[0] >>  8 ) & 0xFF ] <<  8 ) ^
+            ( (uint32_t) RSb[ ( t.Y[3] >> 16 ) & 0xFF ] << 16 ) ^
+            ( (uint32_t) RSb[ ( t.Y[2] >> 24 ) & 0xFF ] << 24 );
 
-    X2 = *RK++ ^ \
-            ( (uint32_t) RSb[ ( Y2       ) & 0xFF ]       ) ^
-            ( (uint32_t) RSb[ ( Y1 >>  8 ) & 0xFF ] <<  8 ) ^
-            ( (uint32_t) RSb[ ( Y0 >> 16 ) & 0xFF ] << 16 ) ^
-            ( (uint32_t) RSb[ ( Y3 >> 24 ) & 0xFF ] << 24 );
+    t.X[2] = *RK++ ^ \
+            ( (uint32_t) RSb[ ( t.Y[2]       ) & 0xFF ]       ) ^
+            ( (uint32_t) RSb[ ( t.Y[1] >>  8 ) & 0xFF ] <<  8 ) ^
+            ( (uint32_t) RSb[ ( t.Y[0] >> 16 ) & 0xFF ] << 16 ) ^
+            ( (uint32_t) RSb[ ( t.Y[3] >> 24 ) & 0xFF ] << 24 );
 
-    X3 = *RK++ ^ \
-            ( (uint32_t) RSb[ ( Y3       ) & 0xFF ]       ) ^
-            ( (uint32_t) RSb[ ( Y2 >>  8 ) & 0xFF ] <<  8 ) ^
-            ( (uint32_t) RSb[ ( Y1 >> 16 ) & 0xFF ] << 16 ) ^
-            ( (uint32_t) RSb[ ( Y0 >> 24 ) & 0xFF ] << 24 );
+    t.X[3] = *RK++ ^ \
+            ( (uint32_t) RSb[ ( t.Y[3]       ) & 0xFF ]       ) ^
+            ( (uint32_t) RSb[ ( t.Y[2] >>  8 ) & 0xFF ] <<  8 ) ^
+            ( (uint32_t) RSb[ ( t.Y[1] >> 16 ) & 0xFF ] << 16 ) ^
+            ( (uint32_t) RSb[ ( t.Y[0] >> 24 ) & 0xFF ] << 24 );
 
-    PUT_UINT32_LE( X0, output,  0 );
-    PUT_UINT32_LE( X1, output,  4 );
-    PUT_UINT32_LE( X2, output,  8 );
-    PUT_UINT32_LE( X3, output, 12 );
+    PUT_UINT32_LE( t.X[0], output,  0 );
+    PUT_UINT32_LE( t.X[1], output,  4 );
+    PUT_UINT32_LE( t.X[2], output,  8 );
+    PUT_UINT32_LE( t.X[3], output, 12 );
 
-    mbedtls_platform_zeroize( &X0, sizeof( X0 ) );
-    mbedtls_platform_zeroize( &X1, sizeof( X1 ) );
-    mbedtls_platform_zeroize( &X2, sizeof( X2 ) );
-    mbedtls_platform_zeroize( &X3, sizeof( X3 ) );
-
-    mbedtls_platform_zeroize( &Y0, sizeof( Y0 ) );
-    mbedtls_platform_zeroize( &Y1, sizeof( Y1 ) );
-    mbedtls_platform_zeroize( &Y2, sizeof( Y2 ) );
-    mbedtls_platform_zeroize( &Y3, sizeof( Y3 ) );
-
-    mbedtls_platform_zeroize( &RK, sizeof( RK ) );
+    mbedtls_platform_zeroize( &t, sizeof( t ) );
 
     return( 0 );
 }
@@ -1847,7 +1826,7 @@
         mode = i & 1;
 
         if( verbose != 0 )
-            mbedtls_printf( "  AES-ECB-%3d (%s): ", keybits,
+            mbedtls_printf( "  AES-ECB-%3u (%s): ", keybits,
                             ( mode == MBEDTLS_AES_DECRYPT ) ? "dec" : "enc" );
 
         memset( buf, 0, 16 );
@@ -1909,7 +1888,7 @@
         mode = i & 1;
 
         if( verbose != 0 )
-            mbedtls_printf( "  AES-CBC-%3d (%s): ", keybits,
+            mbedtls_printf( "  AES-CBC-%3u (%s): ", keybits,
                             ( mode == MBEDTLS_AES_DECRYPT ) ? "dec" : "enc" );
 
         memset( iv , 0, 16 );
@@ -1984,7 +1963,7 @@
         mode = i & 1;
 
         if( verbose != 0 )
-            mbedtls_printf( "  AES-CFB128-%3d (%s): ", keybits,
+            mbedtls_printf( "  AES-CFB128-%3u (%s): ", keybits,
                             ( mode == MBEDTLS_AES_DECRYPT ) ? "dec" : "enc" );
 
         memcpy( iv,  aes_test_cfb128_iv, 16 );
@@ -2047,7 +2026,7 @@
         mode = i & 1;
 
         if( verbose != 0 )
-            mbedtls_printf( "  AES-OFB-%3d (%s): ", keybits,
+            mbedtls_printf( "  AES-OFB-%3u (%s): ", keybits,
                             ( mode == MBEDTLS_AES_DECRYPT ) ? "dec" : "enc" );
 
         memcpy( iv,  aes_test_ofb_iv, 16 );