From 0344c602eadc0802776b65ff90f0a02c856cf53c Mon Sep 17 00:00:00 2001
From: Tom Rini <trini@konsulko.com>
Date: Tue, 8 Oct 2024 13:56:50 -0600
Subject: Squashed 'lib/mbedtls/external/mbedtls/' content from commit
 2ca6c285a0dd

git-subtree-dir: lib/mbedtls/external/mbedtls
git-subtree-split: 2ca6c285a0dd3f33982dd57299012dacab1ff206
---
 scripts/mbedtls_dev/bignum_mod.py | 102 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 102 insertions(+)
 create mode 100644 scripts/mbedtls_dev/bignum_mod.py

(limited to 'scripts/mbedtls_dev/bignum_mod.py')

diff --git a/scripts/mbedtls_dev/bignum_mod.py b/scripts/mbedtls_dev/bignum_mod.py
new file mode 100644
index 00000000000..f554001ec74
--- /dev/null
+++ b/scripts/mbedtls_dev/bignum_mod.py
@@ -0,0 +1,102 @@
+"""Framework classes for generation of bignum mod test cases."""
+# Copyright The Mbed TLS Contributors
+# SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
+#
+
+from typing import Dict, List
+
+from . import test_data_generation
+from . import bignum_common
+from .bignum_data import ONLY_PRIME_MODULI
+
+class BignumModTarget(test_data_generation.BaseTarget):
+    #pylint: disable=abstract-method, too-few-public-methods
+    """Target for bignum mod test case generation."""
+    target_basename = 'test_suite_bignum_mod.generated'
+
+
+class BignumModMul(bignum_common.ModOperationCommon,
+                   BignumModTarget):
+    # pylint:disable=duplicate-code
+    """Test cases for bignum mpi_mod_mul()."""
+    symbol = "*"
+    test_function = "mpi_mod_mul"
+    test_name = "mbedtls_mpi_mod_mul"
+    input_style = "arch_split"
+    arity = 2
+
+    def arguments(self) -> List[str]:
+        return [self.format_result(self.to_montgomery(self.int_a)),
+                self.format_result(self.to_montgomery(self.int_b)),
+                bignum_common.quote_str(self.arg_n)
+               ] + self.result()
+
+    def result(self) -> List[str]:
+        result = (self.int_a * self.int_b) % self.int_n
+        return [self.format_result(self.to_montgomery(result))]
+
+
+class BignumModSub(bignum_common.ModOperationCommon, BignumModTarget):
+    """Test cases for bignum mpi_mod_sub()."""
+    symbol = "-"
+    test_function = "mpi_mod_sub"
+    test_name = "mbedtls_mpi_mod_sub"
+    input_style = "fixed"
+    arity = 2
+
+    def result(self) -> List[str]:
+        result = (self.int_a - self.int_b) % self.int_n
+        # To make negative tests easier, append 0 for success to the
+        # generated cases
+        return [self.format_result(result), "0"]
+
+class BignumModInvNonMont(bignum_common.ModOperationCommon, BignumModTarget):
+    """Test cases for bignum mpi_mod_inv() - not in Montgomery form."""
+    moduli = ONLY_PRIME_MODULI  # for now only prime moduli supported
+    symbol = "^ -1"
+    test_function = "mpi_mod_inv_non_mont"
+    test_name = "mbedtls_mpi_mod_inv non-Mont. form"
+    input_style = "fixed"
+    arity = 1
+    suffix = True
+    disallow_zero_a = True
+
+    def result(self) -> List[str]:
+        result = bignum_common.invmod_positive(self.int_a, self.int_n)
+        # To make negative tests easier, append 0 for success to the
+        # generated cases
+        return [self.format_result(result), "0"]
+
+class BignumModInvMont(bignum_common.ModOperationCommon, BignumModTarget):
+    """Test cases for bignum mpi_mod_inv() - Montgomery form."""
+    moduli = ONLY_PRIME_MODULI  # for now only prime moduli supported
+    symbol = "^ -1"
+    test_function = "mpi_mod_inv_mont"
+    test_name = "mbedtls_mpi_mod_inv Mont. form"
+    input_style = "arch_split"  # Mont. form requires arch_split
+    arity = 1
+    suffix = True
+    disallow_zero_a = True
+    montgomery_form_a = True
+
+    def result(self) -> List[str]:
+        result = bignum_common.invmod_positive(self.int_a, self.int_n)
+        mont_result = self.to_montgomery(result)
+        # To make negative tests easier, append 0 for success to the
+        # generated cases
+        return [self.format_result(mont_result), "0"]
+
+
+class BignumModAdd(bignum_common.ModOperationCommon, BignumModTarget):
+    """Test cases for bignum mpi_mod_add()."""
+    count = 0
+    symbol = "+"
+    test_function = "mpi_mod_add"
+    test_name = "mbedtls_mpi_mod_add"
+    input_style = "fixed"
+
+    def result(self) -> List[str]:
+        result = (self.int_a + self.int_b) % self.int_n
+        # To make negative tests easier, append "0" for success to the
+        # generated cases
+        return [self.format_result(result), "0"]
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