Resolve issues raised after rebasing

Remove `cc_rand.h` and duplicate check in `mbedtls_ecdsa_sign()`,
that were inserted after rebasing.

features/mbedtls/targets/TARGET_CRYPTOCELL310/cc_rand.h

@@ -1,73 +0,0 @@
-/*
- *  cc_rand.h
- *
- *  Copyright (C) 2018, ARM Limited, All Rights Reserved
- *  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.
- *  You may obtain a copy of the License at
- *
- *  http://www.apache.org/licenses/LICENSE-2.0
- *
- *  Unless required by applicable law or agreed to in writing, software
- *  distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
- *  WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- *  See the License for the specific language governing permissions and
- *  limitations under the License.
- *
- */
-#ifndef __CC_RAND_H__
-#define __CC_RAND_H__
-#include <stddef.h>
-#include <stdint.h>
-
-typedef struct
-{
-    int  (*f_rng)(void* ctx, unsigned char* output, size_t outSizeBytes);
-    void* ctx;
-
-}mbedtls_rand_func_container;
-
-
-uint32_t mbedtls_to_cc_rand_func( void *mbedtls_rnd_ctx, uint16_t outSizeBytes, uint8_t *out_ptr )
-{
-    uint16_t i = 0;
-    uint8_t temp = 0;
-    mbedtls_rand_func_container* mbedtls_rand = (mbedtls_rand_func_container*)mbedtls_rnd_ctx;
-    uint32_t ret = mbedtls_rand->f_rng( mbedtls_rand->ctx, out_ptr, outSizeBytes );
-    if( ret != 0 )
-        return ret;
-
-    /*
-     * CC requires the random data as LE, so reversing the data
-     * (although this is random, but test vectors are in specific Endianess)
-     */
-    while ( i < ( outSizeBytes / 2 ) )
-    {
-        temp = out_ptr[outSizeBytes - 1 - i];
-        out_ptr[outSizeBytes - 1 - i] = out_ptr[i];
-        out_ptr[i] = temp;
-        ++i;
-    }
-    /*
-     * CC increases the random data by one, to put the vector in the proper range (1 to  n),
-     * The RFC tests supply a data buffer within range, and in order to generate the proper ephemeral key,
-     * need to decrease one from this data, before CC increases the data, so the output will be as expected
-     */
-    i = 0;
-    while( out_ptr[i] == 0 )
-    {
-        ++i;
-    }
-    while( i > 0 )
-    {
-        --out_ptr[i];
-        --i;
-    }
-    --out_ptr[0];
-    return ret;
-}
-
-
-#endif/* __CC_RAND_H__ */

features/mbedtls/targets/TARGET_CRYPTOCELL310/ecdsa_alt.c

@@ -84,12 +84,6 @@ int mbedtls_ecdsa_sign( mbedtls_ecp_group *grp, mbedtls_mpi *r, mbedtls_mpi *s,
         goto cleanup;
     }
 
-    if( blen > 0xFFFFFFFF )
-    {
-        ret = MBEDTLS_ERR_ECP_BAD_INPUT_DATA;
-        goto cleanup;
-    }
-
     if ( pDomain != NULL )
     {
         uint8_t temp_buf[ MAX_KEY_SIZE_IN_BYTES ] = {0};