e39760a850
* Added AES-CBC module. * Added functions Md5Calculate, Sha1Calculate, Sha256Calculate, and Sha512Calculate to calculate a hash in one call. * Added function Rc4XorWithKey to encrypt/decrypt a buffer with RC4 in one call. * Bugfix: AesInitialise now returns -1 if invalid key size is provided. Previously it would return 0 despite what was documented.
332 lines
13 KiB
C
332 lines
13 KiB
C
////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// WjCryptLibTest_AesOfb
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//
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// Tests the cryptography functions against known test vectors to verify algorithms are correct.
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// Tests the following:
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// AES OFB
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//
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// This is free and unencumbered software released into the public domain - January 2018 waterjuice.org
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// IMPORTS
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdbool.h>
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#include "WjCryptLib_AesOfb.h"
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#include "WjCryptLib_Sha1.h"
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// MACROS
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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#define MIN( x, y ) ( ((x)<(y))?(x):(y) )
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// TYPES
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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#define MAX_PLAINTEXT_SIZE 100
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typedef struct
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{
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char* KeyHex;
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char* IvHex;
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char* CipherTextHex;
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} TestVector;
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// GLOBALS
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// These test vectors were created using openssl. Using the following commands:
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// > dd if=/dev/zero iflag=count_bytes count=48 status=none | openssl enc -aes-128-ofb -K 00000000000000000000000000000000 -iv 00000000000000000000000000000000 | xxd -p -c 48
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// > dd if=/dev/zero iflag=count_bytes count=48 status=none | openssl enc -aes-128-ofb -K 0102030405060708a1a2a3a4a5a6a7a8 -iv 00000000000000000000000000000000 | xxd -p -c 48
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// > dd if=/dev/zero iflag=count_bytes count=48 status=none | openssl enc -aes-128-ofb -K 00000000000000000000000000000000 -iv b1b2b3b4b5b6b7b8c1c2c3c4c5c6c7c8 | xxd -p -c 48
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// > dd if=/dev/zero iflag=count_bytes count=48 status=none | openssl enc -aes-128-ofb -K 0102030405060708a1a2a3a4a5a6a7a8 -iv b1b2b3b4b5b6b7b8c1c2c3c4c5c6c7c8 | xxd -p -c 48
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// > dd if=/dev/zero iflag=count_bytes count=48 status=none | openssl enc -aes-192-ofb -K 0102030405060708a1a2a3a4a5a6a7a8b1b2b3b4b5b6b7b8 -iv c1c2c3c4c5c6c7c8d1d2d3d4d5d6d7d8 | xxd -p -c 48
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// > dd if=/dev/zero iflag=count_bytes count=48 status=none | openssl enc -aes-256-ofb -K 0102030405060708a1a2a3a4a5a6a7a8b1b2b3b4b5b6b7b8c1c2c3c4c5c6c7c8 -iv d1d2d3d4d5d6d7d8e1e2e3e4e5e6e7e8 | xxd -p -c 48
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static TestVector gTestVectors [] =
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{
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{
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"00000000000000000000000000000000",
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"00000000000000000000000000000000",
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"66e94bd4ef8a2c3b884cfa59ca342b2ef795bd4a52e29ed713d313fa20e98dbca10cf66d0fddf3405370b4bf8df5bfb3"
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},
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{
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"0102030405060708a1a2a3a4a5a6a7a8",
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"00000000000000000000000000000000",
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"cdb33c236caa155b28d14e6db35053718a906fc0050ae8ad054621e487e5b0a264873309a9471152104a0a51361a91af"
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},
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{
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"00000000000000000000000000000000",
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"b1b2b3b4b5b6b7b8c1c2c3c4c5c6c7c8",
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"93fc4d6374dc544d40181d39066e9b0077aa627a84dbd57c9e72a1bbbc8bd1e082faf44d5ce57f6320e9f33d38a3a268"
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},
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{
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"0102030405060708a1a2a3a4a5a6a7a8",
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"b1b2b3b4b5b6b7b8c1c2c3c4c5c6c7c8",
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"551eb0c4d89d7e1b537b30f627cc5a0afdebd5a07483107df8555dbae9453189ae13766c9678554971151486cee958af"
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},
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{
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"0102030405060708a1a2a3a4a5a6a7a8b1b2b3b4b5b6b7b8",
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"c1c2c3c4c5c6c7c8d1d2d3d4d5d6d7d8",
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"e9128df92fd1da443f826d84fd46be40fffb4ad23477a02efb14cbfd9a28ebcc2e6a5948cd1980e7cd6f5d386f7f6539"
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},
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{
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"0102030405060708a1a2a3a4a5a6a7a8b1b2b3b4b5b6b7b8c1c2c3c4c5c6c7c8",
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"d1d2d3d4d5d6d7d8e1e2e3e4e5e6e7e8",
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"06a9a20023d47df78a5ead97715a85921cab7d5114fb74a1b99e66d915a0e125a0fcf198d93364235f9a33c02dc170f6"
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},
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};
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#define NUM_TEST_VECTORS ( sizeof(gTestVectors) / sizeof(gTestVectors[0]) )
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#define TEST_VECTOR_OUTPUT_SIZE 48
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// INTERNAL FUNCTIONS
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// HexToBytes
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//
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// Reads a string as hex and places it in Data. This function will output as many bytes as represented in the input
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// string, it will not check the output buffer length. On return *pDataSize will be number of bytes read.
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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static
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void
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HexToBytes
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(
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char const* HexString, // [in]
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uint8_t* Data, // [out]
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uint32_t* pDataSize // [out optional]
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)
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{
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uint32_t i;
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char holdingBuffer [3] = {0};
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unsigned hexToNumber;
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uint32_t outputIndex = 0;
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for( i=0; i<strlen(HexString)/2; i++ )
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{
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holdingBuffer[0] = HexString[i*2 + 0];
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holdingBuffer[1] = HexString[i*2 + 1];
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sscanf( holdingBuffer, "%x", &hexToNumber );
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Data[i] = (uint8_t) hexToNumber;
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outputIndex += 1;
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}
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if( NULL != pDataSize )
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{
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*pDataSize = outputIndex;
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}
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// TestVectors
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//
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// Tests AES OFB against fixed test vectors
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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static
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bool
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TestVectors
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(
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void
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)
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{
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uint32_t vectorIndex;
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uint8_t key [AES_KEY_SIZE_256];
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uint32_t keySize = 0;
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uint8_t iv [AES_OFB_IV_SIZE];
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uint8_t vector [TEST_VECTOR_OUTPUT_SIZE];
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uint8_t aesOfbOutput [TEST_VECTOR_OUTPUT_SIZE];
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uint8_t const zeroBuffer [TEST_VECTOR_OUTPUT_SIZE] = {0};
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for( vectorIndex=0; vectorIndex<NUM_TEST_VECTORS; vectorIndex++ )
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{
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HexToBytes( gTestVectors[vectorIndex].KeyHex, key, &keySize );
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HexToBytes( gTestVectors[vectorIndex].IvHex, iv, NULL );
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HexToBytes( gTestVectors[vectorIndex].CipherTextHex, vector, NULL );
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AesOfbXorWithKey( key, keySize, iv, zeroBuffer, aesOfbOutput, TEST_VECTOR_OUTPUT_SIZE );
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if( 0 != memcmp( aesOfbOutput, vector, TEST_VECTOR_OUTPUT_SIZE ) )
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{
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printf( "Test vector (index:%u) failed\n", vectorIndex );
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return false;
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}
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}
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// TestLargeVector
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//
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// Tests AES OFB against a known large vector (of 1 million bytes). We check it against a known SHA-1 hash of
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// the output.
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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static
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bool
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TestLargeVector
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(
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void
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)
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{
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//dd if=/dev/zero iflag=count_bytes count=1000000 status=none | openssl enc -aes-128-ofb -K 00001111222233334444555566667777 -iv 88889999aaaabbbbccccddddeeeeffff | openssl sha1
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//(stdin)= a0824dca21938b33a5a8db26c8ab2428624db6d3
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uint8_t const* key = (uint8_t const*)"\x00\x00\x11\x11\x22\x22\x33\x33\x44\x44\x55\x55\x66\x66\x77\x77";
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uint8_t const* iv = (uint8_t const*)"\x88\x88\x99\x99\xaa\xaa\xbb\xbb\xcc\xcc\xdd\xdd\xee\xee\xff\xff";
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uint8_t const* sha1Hash = (uint8_t const*)"\xa0\x82\x4d\xca\x21\x93\x8b\x33\xa5\xa8\xdb\x26\xc8\xab\x24\x28\x62\x4d\xb6\xd3";
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uint32_t const numBytesToGenerate = 1000000;
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uint8_t* buffer = malloc( numBytesToGenerate );
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uint32_t amountLeft = numBytesToGenerate;
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uint32_t chunkSize;
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Sha1Context sha1Context;
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AesOfbContext aesOfbContext;
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SHA1_HASH calcSha1;
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// Encrypt in one go first.
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memset( buffer, 0, numBytesToGenerate );
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AesOfbXorWithKey( key, AES_KEY_SIZE_128, iv, buffer, buffer, numBytesToGenerate );
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Sha1Initialise( &sha1Context );
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Sha1Update( &sha1Context, buffer, numBytesToGenerate );
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Sha1Finalise( &sha1Context, &calcSha1 );
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if( 0 != memcmp( &calcSha1, sha1Hash, SHA1_HASH_SIZE ) )
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{
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printf( "Large test vector failed\n" );
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return false;
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}
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memset( buffer, 0, numBytesToGenerate );
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// Now encrypt in smaller pieces (10000 bytes at a time)
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Sha1Initialise( &sha1Context );
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AesOfbInitialiseWithKey( &aesOfbContext, key, AES_KEY_SIZE_128, iv );
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while( amountLeft > 0 )
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{
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memset( buffer, 0, numBytesToGenerate );
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chunkSize = MIN( amountLeft, 10000 );
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AesOfbOutput( &aesOfbContext, buffer, chunkSize );
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Sha1Update( &sha1Context, buffer, chunkSize );
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amountLeft -= chunkSize;
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}
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Sha1Finalise( &sha1Context, &calcSha1 );
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if( 0 != memcmp( &calcSha1, sha1Hash, SHA1_HASH_SIZE ) )
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{
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printf( "Large test vector failed\n" );
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return false;
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}
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return true;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// TestStreamConsistency
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//
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// Tests that an AES OFB stream is consistent regardless of the chunk sizes of the requests and/or stream
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// repositioning.
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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static
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bool
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TestStreamConsistency
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(
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void
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)
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{
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bool success = true;
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uint8_t const key[AES_KEY_SIZE_128] = { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 };
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uint8_t const iv[AES_OFB_IV_SIZE] = { 1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16 };
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#define STREAMSIZE 1000
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uint8_t stream [STREAMSIZE];
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uint8_t newStream [STREAMSIZE];
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uint8_t const zeroStream [STREAMSIZE] = {0};
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AesOfbContext context;
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uint32_t chunkSize;
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// First fill in stream with 1000 bytes generated in one go.
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memset( stream, 0, STREAMSIZE );
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AesOfbXorWithKey( key, sizeof(key), iv, stream, stream, STREAMSIZE );
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// Perform sanity check that the key is not all zero!
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if( 0 == memcmp( stream, zeroStream, STREAMSIZE ) )
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{
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printf( "AES OFB Stream all zero\n" );
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success = false;
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return success;
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}
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// Now recreate the stream in small bits. Starting at 1 byte at a time and increasing chunk size
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for( chunkSize=1; chunkSize<64; chunkSize++ )
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{
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uint32_t amountLeft = STREAMSIZE;
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uint32_t offset = 0;
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memset( newStream, 0, STREAMSIZE );
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AesOfbInitialiseWithKey( &context, key, sizeof(key), iv );
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while( amountLeft > 0 )
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{
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uint32_t thisChunkSize = MIN( chunkSize, amountLeft );
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AesOfbOutput( &context, newStream+offset, thisChunkSize );
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offset += thisChunkSize;
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amountLeft -= thisChunkSize;
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}
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// Now verify that the stream is consistent with the one generated all at once.
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if( 0 != memcmp( stream, newStream, STREAMSIZE ) )
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{
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printf( "AES OFB Stream not consistent\n" );
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success = false;
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break;
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}
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}
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#undef STREAMSIZE
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return success;
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}
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// PUBLIC FUNCTIONS
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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// TestAesOfb
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//
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// Test AES OFB algorithm
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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
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bool
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TestAesOfb
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(
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void
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)
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{
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bool totalSuccess = true;
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bool success;
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success = TestVectors( );
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if( !success ) { totalSuccess = false; }
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success = TestLargeVector( );
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if( !success ) { totalSuccess = false; }
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success = TestStreamConsistency( );
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if( !success ) { totalSuccess = false; }
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return totalSuccess;
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}
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