Feature/mbedtls (#84)
* try to import mbedtls and build it * add stubs socket class * some boilterplate, read and write function implemented * more boilterplate / current error in handshake because no CA cert is setup * add something so skip ca verification, can ws curl https://google.com ! * cleanup / close implemented * tweak CMakefiles * typo in include * update readme * disable unittests
This commit is contained in:
Benjamin Sergeant
committed by
GitHub
GitHub
parent
ba4a9e1586
commit
06cbebe22e
766
third_party/mbedtls/crypto/tests/suites/helpers.function
vendored
Normal file
766
third_party/mbedtls/crypto/tests/suites/helpers.function
vendored
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@@ -0,0 +1,766 @@
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#line 2 "suites/helpers.function"
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/*----------------------------------------------------------------------------*/
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/* Headers */
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#include <stdlib.h>
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#if defined(MBEDTLS_PLATFORM_C)
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#include "mbedtls/platform.h"
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#else
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#include <stdio.h>
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#define mbedtls_fprintf fprintf
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#define mbedtls_snprintf snprintf
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#define mbedtls_calloc calloc
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#define mbedtls_free free
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#define mbedtls_exit exit
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#define mbedtls_time time
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#define mbedtls_time_t time_t
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#define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
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#define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
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#endif
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#if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
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#include "mbedtls/memory_buffer_alloc.h"
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#endif
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#if defined(MBEDTLS_CHECK_PARAMS)
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#include "mbedtls/platform_util.h"
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#include <setjmp.h>
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#endif
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#ifdef _MSC_VER
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#include <basetsd.h>
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typedef UINT8 uint8_t;
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typedef INT32 int32_t;
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typedef UINT32 uint32_t;
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#define strncasecmp _strnicmp
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#define strcasecmp _stricmp
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#else
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#include <stdint.h>
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#endif
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#include <string.h>
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#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
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#include <unistd.h>
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#include <strings.h>
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#endif
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/* Type for Hex parameters */
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typedef struct data_tag
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{
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uint8_t * x;
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uint32_t len;
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} data_t;
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/*----------------------------------------------------------------------------*/
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/* Status and error constants */
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#define DEPENDENCY_SUPPORTED 0 /* Dependency supported by build */
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#define KEY_VALUE_MAPPING_FOUND 0 /* Integer expression found */
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#define DISPATCH_TEST_SUCCESS 0 /* Test dispatch successful */
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#define KEY_VALUE_MAPPING_NOT_FOUND -1 /* Integer expression not found */
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#define DEPENDENCY_NOT_SUPPORTED -2 /* Dependency not supported */
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#define DISPATCH_TEST_FN_NOT_FOUND -3 /* Test function not found */
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#define DISPATCH_INVALID_TEST_DATA -4 /* Invalid test parameter type.
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Only int, string, binary data
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and integer expressions are
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allowed */
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#define DISPATCH_UNSUPPORTED_SUITE -5 /* Test suite not supported by the
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build */
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typedef enum
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{
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PARAMFAIL_TESTSTATE_IDLE = 0, /* No parameter failure call test */
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PARAMFAIL_TESTSTATE_PENDING, /* Test call to the parameter failure
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* is pending */
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PARAMFAIL_TESTSTATE_CALLED /* The test call to the parameter
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* failure function has been made */
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} paramfail_test_state_t;
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/*----------------------------------------------------------------------------*/
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/* Macros */
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/**
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* \brief This macro tests the expression passed to it as a test step or
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* individual test in a test case.
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*
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* It allows a library function to return a value and return an error
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* code that can be tested.
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*
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* When MBEDTLS_CHECK_PARAMS is enabled, calls to the parameter failure
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* callback, MBEDTLS_PARAM_FAILED(), will be assumed to be a test
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* failure.
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*
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* This macro is not suitable for negative parameter validation tests,
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* as it assumes the test step will not create an error.
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*
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* Failing the test means:
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* - Mark this test case as failed.
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* - Print a message identifying the failure.
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* - Jump to the \c exit label.
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*
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* This macro expands to an instruction, not an expression.
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* It may jump to the \c exit label.
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*
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* \param TEST The test expression to be tested.
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*/
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#define TEST_ASSERT( TEST ) \
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do { \
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if( ! (TEST) ) \
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{ \
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test_fail( #TEST, __LINE__, __FILE__ ); \
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goto exit; \
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} \
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} while( 0 )
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/** Evaluate two expressions and fail the test case if they have different
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* values.
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*
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* \param expr1 An expression to evaluate.
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* \param expr2 The expected value of \p expr1. This can be any
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* expression, but it is typically a constant.
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*/
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#define TEST_EQUAL( expr1, expr2 ) \
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TEST_ASSERT( ( expr1 ) == ( expr2 ) )
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/** Evaluate an expression and fail the test case if it returns an error.
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*
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* \param expr The expression to evaluate. This is typically a call
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* to a \c psa_xxx function that returns a value of type
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* #psa_status_t.
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*/
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#define PSA_ASSERT( expr ) TEST_EQUAL( ( expr ), PSA_SUCCESS )
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/** Allocate memory dynamically and fail the test case if this fails.
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*
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* You must set \p pointer to \c NULL before calling this macro and
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* put `mbedtls_free( pointer )` in the test's cleanup code.
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*
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* If \p length is zero, the resulting \p pointer will be \c NULL.
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* This is usually what we want in tests since API functions are
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* supposed to accept null pointers when a buffer size is zero.
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*
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* This macro expands to an instruction, not an expression.
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* It may jump to the \c exit label.
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*
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* \param pointer An lvalue where the address of the allocated buffer
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* will be stored.
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* This expression may be evaluated multiple times.
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* \param length Number of elements to allocate.
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* This expression may be evaluated multiple times.
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*
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*/
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#define ASSERT_ALLOC( pointer, length ) \
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do \
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{ \
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TEST_ASSERT( ( pointer ) == NULL ); \
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if( ( length ) != 0 ) \
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{ \
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( pointer ) = mbedtls_calloc( sizeof( *( pointer ) ), \
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( length ) ); \
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TEST_ASSERT( ( pointer ) != NULL ); \
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} \
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} \
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while( 0 )
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/** Compare two buffers and fail the test case if they differ.
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*
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* This macro expands to an instruction, not an expression.
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* It may jump to the \c exit label.
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*
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* \param p1 Pointer to the start of the first buffer.
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* \param size1 Size of the first buffer in bytes.
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* This expression may be evaluated multiple times.
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* \param p2 Pointer to the start of the second buffer.
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* \param size2 Size of the second buffer in bytes.
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* This expression may be evaluated multiple times.
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*/
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#define ASSERT_COMPARE( p1, size1, p2, size2 ) \
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do \
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{ \
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TEST_ASSERT( ( size1 ) == ( size2 ) ); \
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if( ( size1 ) != 0 ) \
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TEST_ASSERT( memcmp( ( p1 ), ( p2 ), ( size1 ) ) == 0 ); \
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} \
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while( 0 )
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#if defined(MBEDTLS_CHECK_PARAMS) && !defined(MBEDTLS_PARAM_FAILED_ALT)
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/**
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* \brief This macro tests the statement passed to it as a test step or
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* individual test in a test case. The macro assumes the test will fail
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* and will generate an error.
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*
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* It allows a library function to return a value and tests the return
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* code on return to confirm the given error code was returned.
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*
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* When MBEDTLS_CHECK_PARAMS is enabled, calls to the parameter failure
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* callback, MBEDTLS_PARAM_FAILED(), are assumed to indicate the
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* expected failure, and the test will pass.
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*
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* This macro is intended for negative parameter validation tests,
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* where the failing function may return an error value or call
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* MBEDTLS_PARAM_FAILED() to indicate the error.
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*
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* \param PARAM_ERROR_VALUE The expected error code.
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*
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* \param TEST The test expression to be tested.
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*/
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#define TEST_INVALID_PARAM_RET( PARAM_ERR_VALUE, TEST ) \
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do { \
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test_info.paramfail_test_state = PARAMFAIL_TESTSTATE_PENDING; \
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if( (TEST) != (PARAM_ERR_VALUE) || \
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test_info.paramfail_test_state != PARAMFAIL_TESTSTATE_CALLED ) \
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{ \
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test_fail( #TEST, __LINE__, __FILE__ ); \
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goto exit; \
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} \
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} while( 0 )
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|
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/**
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* \brief This macro tests the statement passed to it as a test step or
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* individual test in a test case. The macro assumes the test will fail
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* and will generate an error.
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*
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* It assumes the library function under test cannot return a value and
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* assumes errors can only be indicated byt calls to
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* MBEDTLS_PARAM_FAILED().
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*
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* When MBEDTLS_CHECK_PARAMS is enabled, calls to the parameter failure
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* callback, MBEDTLS_PARAM_FAILED(), are assumed to indicate the
|
||||
* expected failure. If MBEDTLS_CHECK_PARAMS is not enabled, no test
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* can be made.
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*
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* This macro is intended for negative parameter validation tests,
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* where the failing function can only return an error by calling
|
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* MBEDTLS_PARAM_FAILED() to indicate the error.
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||||
*
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* \param TEST The test expression to be tested.
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||||
*/
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#define TEST_INVALID_PARAM( TEST ) \
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do { \
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memcpy(jmp_tmp, param_fail_jmp, sizeof(jmp_buf)); \
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if( setjmp( param_fail_jmp ) == 0 ) \
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{ \
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TEST; \
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test_fail( #TEST, __LINE__, __FILE__ ); \
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goto exit; \
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} \
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memcpy(param_fail_jmp, jmp_tmp, sizeof(jmp_buf)); \
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} while( 0 )
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#endif /* MBEDTLS_CHECK_PARAMS && !MBEDTLS_PARAM_FAILED_ALT */
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||||
|
||||
/**
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||||
* \brief This macro tests the statement passed to it as a test step or
|
||||
* individual test in a test case. The macro assumes the test will not fail.
|
||||
*
|
||||
* It assumes the library function under test cannot return a value and
|
||||
* assumes errors can only be indicated by calls to
|
||||
* MBEDTLS_PARAM_FAILED().
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||||
*
|
||||
* When MBEDTLS_CHECK_PARAMS is enabled, calls to the parameter failure
|
||||
* callback, MBEDTLS_PARAM_FAILED(), are assumed to indicate the
|
||||
* expected failure. If MBEDTLS_CHECK_PARAMS is not enabled, no test
|
||||
* can be made.
|
||||
*
|
||||
* This macro is intended to test that functions returning void
|
||||
* accept all of the parameter values they're supposed to accept - eg
|
||||
* that they don't call MBEDTLS_PARAM_FAILED() when a parameter
|
||||
* that's allowed to be NULL happens to be NULL.
|
||||
*
|
||||
* Note: for functions that return something other that void,
|
||||
* checking that they accept all the parameters they're supposed to
|
||||
* accept is best done by using TEST_ASSERT() and checking the return
|
||||
* value as well.
|
||||
*
|
||||
* Note: this macro is available even when #MBEDTLS_CHECK_PARAMS is
|
||||
* disabled, as it makes sense to check that the functions accept all
|
||||
* legal values even if this option is disabled - only in that case,
|
||||
* the test is more about whether the function segfaults than about
|
||||
* whether it invokes MBEDTLS_PARAM_FAILED().
|
||||
*
|
||||
* \param TEST The test expression to be tested.
|
||||
*/
|
||||
#define TEST_VALID_PARAM( TEST ) \
|
||||
TEST_ASSERT( ( TEST, 1 ) );
|
||||
|
||||
#define assert(a) if( !( a ) ) \
|
||||
{ \
|
||||
mbedtls_fprintf( stderr, "Assertion Failed at %s:%d - %s\n", \
|
||||
__FILE__, __LINE__, #a ); \
|
||||
mbedtls_exit( 1 ); \
|
||||
}
|
||||
|
||||
#if defined(__GNUC__)
|
||||
/* Test if arg and &(arg)[0] have the same type. This is true if arg is
|
||||
* an array but not if it's a pointer. */
|
||||
#define IS_ARRAY_NOT_POINTER( arg ) \
|
||||
( ! __builtin_types_compatible_p( __typeof__( arg ), \
|
||||
__typeof__( &( arg )[0] ) ) )
|
||||
#else
|
||||
/* On platforms where we don't know how to implement this check,
|
||||
* omit it. Oh well, a non-portable check is better than nothing. */
|
||||
#define IS_ARRAY_NOT_POINTER( arg ) 1
|
||||
#endif
|
||||
|
||||
/* A compile-time constant with the value 0. If `const_expr` is not a
|
||||
* compile-time constant with a nonzero value, cause a compile-time error. */
|
||||
#define STATIC_ASSERT_EXPR( const_expr ) \
|
||||
( 0 && sizeof( struct { int STATIC_ASSERT : 1 - 2 * ! ( const_expr ); } ) )
|
||||
/* Return the scalar value `value` (possibly promoted). This is a compile-time
|
||||
* constant if `value` is. `condition` must be a compile-time constant.
|
||||
* If `condition` is false, arrange to cause a compile-time error. */
|
||||
#define STATIC_ASSERT_THEN_RETURN( condition, value ) \
|
||||
( STATIC_ASSERT_EXPR( condition ) ? 0 : ( value ) )
|
||||
|
||||
#define ARRAY_LENGTH_UNSAFE( array ) \
|
||||
( sizeof( array ) / sizeof( *( array ) ) )
|
||||
/** Return the number of elements of a static or stack array.
|
||||
*
|
||||
* \param array A value of array (not pointer) type.
|
||||
*
|
||||
* \return The number of elements of the array.
|
||||
*/
|
||||
#define ARRAY_LENGTH( array ) \
|
||||
( STATIC_ASSERT_THEN_RETURN( IS_ARRAY_NOT_POINTER( array ), \
|
||||
ARRAY_LENGTH_UNSAFE( array ) ) )
|
||||
|
||||
/** Return the smaller of two values.
|
||||
*
|
||||
* \param x An integer-valued expression without side effects.
|
||||
* \param y An integer-valued expression without side effects.
|
||||
*
|
||||
* \return The smaller of \p x and \p y.
|
||||
*/
|
||||
#define MIN( x, y ) ( ( x ) < ( y ) ? ( x ) : ( y ) )
|
||||
|
||||
/** Return the larger of two values.
|
||||
*
|
||||
* \param x An integer-valued expression without side effects.
|
||||
* \param y An integer-valued expression without side effects.
|
||||
*
|
||||
* \return The larger of \p x and \p y.
|
||||
*/
|
||||
#define MAX( x, y ) ( ( x ) > ( y ) ? ( x ) : ( y ) )
|
||||
|
||||
/*
|
||||
* 32-bit integer manipulation macros (big endian)
|
||||
*/
|
||||
#ifndef GET_UINT32_BE
|
||||
#define GET_UINT32_BE(n,b,i) \
|
||||
{ \
|
||||
(n) = ( (uint32_t) (b)[(i) ] << 24 ) \
|
||||
| ( (uint32_t) (b)[(i) + 1] << 16 ) \
|
||||
| ( (uint32_t) (b)[(i) + 2] << 8 ) \
|
||||
| ( (uint32_t) (b)[(i) + 3] ); \
|
||||
}
|
||||
#endif
|
||||
|
||||
#ifndef PUT_UINT32_BE
|
||||
#define PUT_UINT32_BE(n,b,i) \
|
||||
{ \
|
||||
(b)[(i) ] = (unsigned char) ( (n) >> 24 ); \
|
||||
(b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \
|
||||
(b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \
|
||||
(b)[(i) + 3] = (unsigned char) ( (n) ); \
|
||||
}
|
||||
#endif
|
||||
|
||||
|
||||
/*----------------------------------------------------------------------------*/
|
||||
/* Global variables */
|
||||
|
||||
static struct
|
||||
{
|
||||
paramfail_test_state_t paramfail_test_state;
|
||||
int failed;
|
||||
const char *test;
|
||||
const char *filename;
|
||||
int line_no;
|
||||
}
|
||||
test_info;
|
||||
|
||||
#if defined(MBEDTLS_PLATFORM_C)
|
||||
mbedtls_platform_context platform_ctx;
|
||||
#endif
|
||||
|
||||
#if defined(MBEDTLS_CHECK_PARAMS)
|
||||
jmp_buf param_fail_jmp;
|
||||
jmp_buf jmp_tmp;
|
||||
#endif
|
||||
|
||||
/*----------------------------------------------------------------------------*/
|
||||
/* Helper flags for complex dependencies */
|
||||
|
||||
/* Indicates whether we expect mbedtls_entropy_init
|
||||
* to initialize some strong entropy source. */
|
||||
#if defined(MBEDTLS_TEST_NULL_ENTROPY) || \
|
||||
( !defined(MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES) && \
|
||||
( !defined(MBEDTLS_NO_PLATFORM_ENTROPY) || \
|
||||
defined(MBEDTLS_HAVEGE_C) || \
|
||||
defined(MBEDTLS_ENTROPY_HARDWARE_ALT) || \
|
||||
defined(ENTROPY_NV_SEED) ) )
|
||||
#define ENTROPY_HAVE_STRONG
|
||||
#endif
|
||||
|
||||
|
||||
/*----------------------------------------------------------------------------*/
|
||||
/* Helper Functions */
|
||||
|
||||
static void test_fail( const char *test, int line_no, const char* filename )
|
||||
{
|
||||
test_info.failed = 1;
|
||||
test_info.test = test;
|
||||
test_info.line_no = line_no;
|
||||
test_info.filename = filename;
|
||||
}
|
||||
|
||||
static int platform_setup()
|
||||
{
|
||||
int ret = 0;
|
||||
#if defined(MBEDTLS_PLATFORM_C)
|
||||
ret = mbedtls_platform_setup( &platform_ctx );
|
||||
#endif /* MBEDTLS_PLATFORM_C */
|
||||
return( ret );
|
||||
}
|
||||
|
||||
static void platform_teardown()
|
||||
{
|
||||
#if defined(MBEDTLS_PLATFORM_C)
|
||||
mbedtls_platform_teardown( &platform_ctx );
|
||||
#endif /* MBEDTLS_PLATFORM_C */
|
||||
}
|
||||
|
||||
#if defined(MBEDTLS_CHECK_PARAMS)
|
||||
void mbedtls_param_failed( const char *failure_condition,
|
||||
const char *file,
|
||||
int line )
|
||||
{
|
||||
/* If we are testing the callback function... */
|
||||
if( test_info.paramfail_test_state == PARAMFAIL_TESTSTATE_PENDING )
|
||||
{
|
||||
test_info.paramfail_test_state = PARAMFAIL_TESTSTATE_CALLED;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* ...else we treat this as an error */
|
||||
|
||||
/* Record the location of the failure, but not as a failure yet, in case
|
||||
* it was part of the test */
|
||||
test_fail( failure_condition, line, file );
|
||||
test_info.failed = 0;
|
||||
|
||||
longjmp( param_fail_jmp, 1 );
|
||||
}
|
||||
}
|
||||
#endif
|
||||
|
||||
#if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
|
||||
static int redirect_output( FILE** out_stream, const char* path )
|
||||
{
|
||||
int stdout_fd = dup( fileno( *out_stream ) );
|
||||
|
||||
if( stdout_fd == -1 )
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
fflush( *out_stream );
|
||||
fclose( *out_stream );
|
||||
*out_stream = fopen( path, "w" );
|
||||
|
||||
if( *out_stream == NULL )
|
||||
{
|
||||
close( stdout_fd );
|
||||
return -1;
|
||||
}
|
||||
|
||||
return stdout_fd;
|
||||
}
|
||||
|
||||
static int restore_output( FILE** out_stream, int old_fd )
|
||||
{
|
||||
fflush( *out_stream );
|
||||
fclose( *out_stream );
|
||||
|
||||
*out_stream = fdopen( old_fd, "w" );
|
||||
if( *out_stream == NULL )
|
||||
{
|
||||
return -1;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void close_output( FILE* out_stream )
|
||||
{
|
||||
fclose( out_stream );
|
||||
}
|
||||
#endif /* __unix__ || __APPLE__ __MACH__ */
|
||||
|
||||
static int unhexify( unsigned char *obuf, const char *ibuf )
|
||||
{
|
||||
unsigned char c, c2;
|
||||
int len = strlen( ibuf ) / 2;
|
||||
assert( strlen( ibuf ) % 2 == 0 ); /* must be even number of bytes */
|
||||
|
||||
while( *ibuf != 0 )
|
||||
{
|
||||
c = *ibuf++;
|
||||
if( c >= '0' && c <= '9' )
|
||||
c -= '0';
|
||||
else if( c >= 'a' && c <= 'f' )
|
||||
c -= 'a' - 10;
|
||||
else if( c >= 'A' && c <= 'F' )
|
||||
c -= 'A' - 10;
|
||||
else
|
||||
assert( 0 );
|
||||
|
||||
c2 = *ibuf++;
|
||||
if( c2 >= '0' && c2 <= '9' )
|
||||
c2 -= '0';
|
||||
else if( c2 >= 'a' && c2 <= 'f' )
|
||||
c2 -= 'a' - 10;
|
||||
else if( c2 >= 'A' && c2 <= 'F' )
|
||||
c2 -= 'A' - 10;
|
||||
else
|
||||
assert( 0 );
|
||||
|
||||
*obuf++ = ( c << 4 ) | c2;
|
||||
}
|
||||
|
||||
return len;
|
||||
}
|
||||
|
||||
static void hexify( unsigned char *obuf, const unsigned char *ibuf, int len )
|
||||
{
|
||||
unsigned char l, h;
|
||||
|
||||
while( len != 0 )
|
||||
{
|
||||
h = *ibuf / 16;
|
||||
l = *ibuf % 16;
|
||||
|
||||
if( h < 10 )
|
||||
*obuf++ = '0' + h;
|
||||
else
|
||||
*obuf++ = 'a' + h - 10;
|
||||
|
||||
if( l < 10 )
|
||||
*obuf++ = '0' + l;
|
||||
else
|
||||
*obuf++ = 'a' + l - 10;
|
||||
|
||||
++ibuf;
|
||||
len--;
|
||||
}
|
||||
}
|
||||
|
||||
/**
|
||||
* Allocate and zeroize a buffer.
|
||||
*
|
||||
* If the size if zero, a pointer to a zeroized 1-byte buffer is returned.
|
||||
*
|
||||
* For convenience, dies if allocation fails.
|
||||
*/
|
||||
static unsigned char *zero_alloc( size_t len )
|
||||
{
|
||||
void *p;
|
||||
size_t actual_len = ( len != 0 ) ? len : 1;
|
||||
|
||||
p = mbedtls_calloc( 1, actual_len );
|
||||
assert( p != NULL );
|
||||
|
||||
memset( p, 0x00, actual_len );
|
||||
|
||||
return( p );
|
||||
}
|
||||
|
||||
/**
|
||||
* Allocate and fill a buffer from hex data.
|
||||
*
|
||||
* The buffer is sized exactly as needed. This allows to detect buffer
|
||||
* overruns (including overreads) when running the test suite under valgrind.
|
||||
*
|
||||
* If the size if zero, a pointer to a zeroized 1-byte buffer is returned.
|
||||
*
|
||||
* For convenience, dies if allocation fails.
|
||||
*/
|
||||
static unsigned char *unhexify_alloc( const char *ibuf, size_t *olen )
|
||||
{
|
||||
unsigned char *obuf;
|
||||
|
||||
*olen = strlen( ibuf ) / 2;
|
||||
|
||||
if( *olen == 0 )
|
||||
return( zero_alloc( *olen ) );
|
||||
|
||||
obuf = mbedtls_calloc( 1, *olen );
|
||||
assert( obuf != NULL );
|
||||
|
||||
(void) unhexify( obuf, ibuf );
|
||||
|
||||
return( obuf );
|
||||
}
|
||||
|
||||
/**
|
||||
* This function just returns data from rand().
|
||||
* Although predictable and often similar on multiple
|
||||
* runs, this does not result in identical random on
|
||||
* each run. So do not use this if the results of a
|
||||
* test depend on the random data that is generated.
|
||||
*
|
||||
* rng_state shall be NULL.
|
||||
*/
|
||||
static int rnd_std_rand( void *rng_state, unsigned char *output, size_t len )
|
||||
{
|
||||
#if !defined(__OpenBSD__)
|
||||
size_t i;
|
||||
|
||||
if( rng_state != NULL )
|
||||
rng_state = NULL;
|
||||
|
||||
for( i = 0; i < len; ++i )
|
||||
output[i] = rand();
|
||||
#else
|
||||
if( rng_state != NULL )
|
||||
rng_state = NULL;
|
||||
|
||||
arc4random_buf( output, len );
|
||||
#endif /* !OpenBSD */
|
||||
|
||||
return( 0 );
|
||||
}
|
||||
|
||||
/**
|
||||
* This function only returns zeros
|
||||
*
|
||||
* rng_state shall be NULL.
|
||||
*/
|
||||
static int rnd_zero_rand( void *rng_state, unsigned char *output, size_t len )
|
||||
{
|
||||
if( rng_state != NULL )
|
||||
rng_state = NULL;
|
||||
|
||||
memset( output, 0, len );
|
||||
|
||||
return( 0 );
|
||||
}
|
||||
|
||||
typedef struct
|
||||
{
|
||||
unsigned char *buf;
|
||||
size_t length;
|
||||
} rnd_buf_info;
|
||||
|
||||
/**
|
||||
* This function returns random based on a buffer it receives.
|
||||
*
|
||||
* rng_state shall be a pointer to a rnd_buf_info structure.
|
||||
*
|
||||
* The number of bytes released from the buffer on each call to
|
||||
* the random function is specified by per_call. (Can be between
|
||||
* 1 and 4)
|
||||
*
|
||||
* After the buffer is empty it will return rand();
|
||||
*/
|
||||
static int rnd_buffer_rand( void *rng_state, unsigned char *output, size_t len )
|
||||
{
|
||||
rnd_buf_info *info = (rnd_buf_info *) rng_state;
|
||||
size_t use_len;
|
||||
|
||||
if( rng_state == NULL )
|
||||
return( rnd_std_rand( NULL, output, len ) );
|
||||
|
||||
use_len = len;
|
||||
if( len > info->length )
|
||||
use_len = info->length;
|
||||
|
||||
if( use_len )
|
||||
{
|
||||
memcpy( output, info->buf, use_len );
|
||||
info->buf += use_len;
|
||||
info->length -= use_len;
|
||||
}
|
||||
|
||||
if( len - use_len > 0 )
|
||||
return( rnd_std_rand( NULL, output + use_len, len - use_len ) );
|
||||
|
||||
return( 0 );
|
||||
}
|
||||
|
||||
/**
|
||||
* Info structure for the pseudo random function
|
||||
*
|
||||
* Key should be set at the start to a test-unique value.
|
||||
* Do not forget endianness!
|
||||
* State( v0, v1 ) should be set to zero.
|
||||
*/
|
||||
typedef struct
|
||||
{
|
||||
uint32_t key[16];
|
||||
uint32_t v0, v1;
|
||||
} rnd_pseudo_info;
|
||||
|
||||
/**
|
||||
* This function returns random based on a pseudo random function.
|
||||
* This means the results should be identical on all systems.
|
||||
* Pseudo random is based on the XTEA encryption algorithm to
|
||||
* generate pseudorandom.
|
||||
*
|
||||
* rng_state shall be a pointer to a rnd_pseudo_info structure.
|
||||
*/
|
||||
static int rnd_pseudo_rand( void *rng_state, unsigned char *output, size_t len )
|
||||
{
|
||||
rnd_pseudo_info *info = (rnd_pseudo_info *) rng_state;
|
||||
uint32_t i, *k, sum, delta=0x9E3779B9;
|
||||
unsigned char result[4], *out = output;
|
||||
|
||||
if( rng_state == NULL )
|
||||
return( rnd_std_rand( NULL, output, len ) );
|
||||
|
||||
k = info->key;
|
||||
|
||||
while( len > 0 )
|
||||
{
|
||||
size_t use_len = ( len > 4 ) ? 4 : len;
|
||||
sum = 0;
|
||||
|
||||
for( i = 0; i < 32; i++ )
|
||||
{
|
||||
info->v0 += ( ( ( info->v1 << 4 ) ^ ( info->v1 >> 5 ) )
|
||||
+ info->v1 ) ^ ( sum + k[sum & 3] );
|
||||
sum += delta;
|
||||
info->v1 += ( ( ( info->v0 << 4 ) ^ ( info->v0 >> 5 ) )
|
||||
+ info->v0 ) ^ ( sum + k[( sum>>11 ) & 3] );
|
||||
}
|
||||
|
||||
PUT_UINT32_BE( info->v0, result, 0 );
|
||||
memcpy( out, result, use_len );
|
||||
len -= use_len;
|
||||
out += 4;
|
||||
}
|
||||
|
||||
return( 0 );
|
||||
}
|
||||
|
||||
int hexcmp( uint8_t * a, uint8_t * b, uint32_t a_len, uint32_t b_len )
|
||||
{
|
||||
int ret = 0;
|
||||
uint32_t i = 0;
|
||||
|
||||
if( a_len != b_len )
|
||||
return( -1 );
|
||||
|
||||
for( i = 0; i < a_len; i++ )
|
||||
{
|
||||
if( a[i] != b[i] )
|
||||
{
|
||||
ret = -1;
|
||||
break;
|
||||
}
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
Reference in New Issue
Block a user