Added framework as a flattened directory
Signed-off-by: Minos Galanakis <minos.galanakis@arm.com>
diff --git a/framework/tests/src/asn1_helpers.c b/framework/tests/src/asn1_helpers.c
new file mode 100644
index 0000000..c63bd0c
--- /dev/null
+++ b/framework/tests/src/asn1_helpers.c
@@ -0,0 +1,64 @@
+/** \file asn1_helpers.c
+ *
+ * \brief Helper functions for tests that manipulate ASN.1 data.
+ */
+
+/*
+ * Copyright The Mbed TLS Contributors
+ * SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+ */
+
+#include <test/helpers.h>
+#include <test/macros.h>
+
+#if defined(MBEDTLS_ASN1_PARSE_C)
+
+#include <mbedtls/asn1.h>
+
+#include <test/asn1_helpers.h>
+
+int mbedtls_test_asn1_skip_integer(unsigned char **p, const unsigned char *end,
+ size_t min_bits, size_t max_bits,
+ int must_be_odd)
+{
+ size_t len;
+ size_t actual_bits;
+ unsigned char msb;
+ TEST_EQUAL(mbedtls_asn1_get_tag(p, end, &len,
+ MBEDTLS_ASN1_INTEGER),
+ 0);
+
+ /* Check if the retrieved length doesn't extend the actual buffer's size.
+ * It is assumed here, that end >= p, which validates casting to size_t. */
+ TEST_ASSERT(len <= (size_t) (end - *p));
+
+ /* Tolerate a slight departure from DER encoding:
+ * - 0 may be represented by an empty string or a 1-byte string.
+ * - The sign bit may be used as a value bit. */
+ if ((len == 1 && (*p)[0] == 0) ||
+ (len > 1 && (*p)[0] == 0 && ((*p)[1] & 0x80) != 0)) {
+ ++(*p);
+ --len;
+ }
+ if (min_bits == 0 && len == 0) {
+ return 1;
+ }
+ msb = (*p)[0];
+ TEST_ASSERT(msb != 0);
+ actual_bits = 8 * (len - 1);
+ while (msb != 0) {
+ msb >>= 1;
+ ++actual_bits;
+ }
+ TEST_ASSERT(actual_bits >= min_bits);
+ TEST_ASSERT(actual_bits <= max_bits);
+ if (must_be_odd) {
+ TEST_ASSERT(((*p)[len-1] & 1) != 0);
+ }
+ *p += len;
+ return 1;
+exit:
+ return 0;
+}
+
+#endif /* MBEDTLS_ASN1_PARSE_C */