1 files changed, 151 insertions, 0 deletions
diff --git a/lib/mbedtls-2.27.0/programs/pkey/pk_verify.c b/lib/mbedtls-2.27.0/programs/pkey/pk_verify.c
new file mode 100644
index 0000000..ee72243
--- /dev/null
+++ b/lib/mbedtls-2.27.0/programs/pkey/pk_verify.c
@@ -0,0 +1,151 @@
+/*
+ *  Public key-based signature verification program
+ *
+ *  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.
+ *  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.
+ */
+
+#if !defined(MBEDTLS_CONFIG_FILE)
+#include "mbedtls/config.h"
+#else
+#include MBEDTLS_CONFIG_FILE
+#endif
+
+#if defined(MBEDTLS_PLATFORM_C)
+#include "mbedtls/platform.h"
+#else
+#include <stdio.h>
+#include <stdlib.h>
+#define mbedtls_snprintf        snprintf
+#define mbedtls_printf          printf
+#define mbedtls_exit            exit
+#define MBEDTLS_EXIT_SUCCESS    EXIT_SUCCESS
+#define MBEDTLS_EXIT_FAILURE    EXIT_FAILURE
+#endif /* MBEDTLS_PLATFORM_C */
+
+#if !defined(MBEDTLS_BIGNUM_C) || !defined(MBEDTLS_MD_C) || \
+    !defined(MBEDTLS_SHA256_C) || !defined(MBEDTLS_PK_PARSE_C) ||   \
+    !defined(MBEDTLS_FS_IO)
+int main( void )
+{
+    mbedtls_printf("MBEDTLS_BIGNUM_C and/or MBEDTLS_MD_C and/or "
+           "MBEDTLS_SHA256_C and/or MBEDTLS_PK_PARSE_C and/or "
+           "MBEDTLS_FS_IO not defined.\n");
+    mbedtls_exit( 0 );
+}
+#else
+
+#include "mbedtls/error.h"
+#include "mbedtls/md.h"
+#include "mbedtls/pk.h"
+
+#include <stdio.h>
+#include <string.h>
+
+
+int main( int argc, char *argv[] )
+{
+    FILE *f;
+    int ret = 1;
+    int exit_code = MBEDTLS_EXIT_FAILURE;
+    size_t i;
+    mbedtls_pk_context pk;
+    unsigned char hash[32];
+    unsigned char buf[MBEDTLS_PK_SIGNATURE_MAX_SIZE];
+    char filename[512];
+
+    mbedtls_pk_init( &pk );
+
+    if( argc != 3 )
+    {
+        mbedtls_printf( "usage: mbedtls_pk_verify <key_file> <filename>\n" );
+
+#if defined(_WIN32)
+        mbedtls_printf( "\n" );
+#endif
+
+        goto exit;
+    }
+
+    mbedtls_printf( "\n  . Reading public key from '%s'", argv[1] );
+    fflush( stdout );
+
+    if( ( ret = mbedtls_pk_parse_public_keyfile( &pk, argv[1] ) ) != 0 )
+    {
+        mbedtls_printf( " failed\n  ! mbedtls_pk_parse_public_keyfile returned -0x%04x\n", (unsigned int) -ret );
+        goto exit;
+    }
+
+    /*
+     * Extract the signature from the file
+     */
+    mbedtls_snprintf( filename, sizeof(filename), "%s.sig", argv[2] );
+
+    if( ( f = fopen( filename, "rb" ) ) == NULL )
+    {
+        mbedtls_printf( "\n  ! Could not open %s\n\n", filename );
+        goto exit;
+    }
+
+    i = fread( buf, 1, sizeof(buf), f );
+
+    fclose( f );
+
+    /*
+     * Compute the SHA-256 hash of the input file and
+     * verify the signature
+     */
+    mbedtls_printf( "\n  . Verifying the SHA-256 signature" );
+    fflush( stdout );
+
+    if( ( ret = mbedtls_md_file(
+                    mbedtls_md_info_from_type( MBEDTLS_MD_SHA256 ),
+                    argv[2], hash ) ) != 0 )
+    {
+        mbedtls_printf( " failed\n  ! Could not open or read %s\n\n", argv[2] );
+        goto exit;
+    }
+
+    if( ( ret = mbedtls_pk_verify( &pk, MBEDTLS_MD_SHA256, hash, 0,
+                           buf, i ) ) != 0 )
+    {
+        mbedtls_printf( " failed\n  ! mbedtls_pk_verify returned -0x%04x\n", (unsigned int) -ret );
+        goto exit;
+    }
+
+    mbedtls_printf( "\n  . OK (the signature is valid)\n\n" );
+
+    exit_code = MBEDTLS_EXIT_SUCCESS;
+
+exit:
+    mbedtls_pk_free( &pk );
+
+#if defined(MBEDTLS_ERROR_C)
+    if( exit_code != MBEDTLS_EXIT_SUCCESS )
+    {
+        mbedtls_strerror( ret, (char *) buf, sizeof(buf) );
+        mbedtls_printf( "  !  Last error was: %s\n", buf );
+    }
+#endif
+
+#if defined(_WIN32)
+    mbedtls_printf( "  + Press Enter to exit this program.\n" );
+    fflush( stdout ); getchar();
+#endif
+
+    mbedtls_exit( exit_code );
+}
+#endif /* MBEDTLS_BIGNUM_C && MBEDTLS_SHA256_C &&
+          MBEDTLS_PK_PARSE_C && MBEDTLS_FS_IO */