/* Initializes the input stream */
int initializeInputStream(char* aesKeyData, int aesKeyDataLength,
char* aesIv, int aesIvLength) {
if (aesIvLength != OAES_BLOCK_SIZE)
{
Limelog("AES IV is incorrect length. Should be %d\n", aesIvLength);
return -1;
}
oaesContext = oaes_alloc();
if (oaesContext == NULL)
{
Limelog("Failed to allocate OpenAES context\n");
return -1;
}
if (oaes_set_option(oaesContext, OAES_OPTION_CBC, aesIv) != OAES_RET_SUCCESS)
{
Limelog("Failed to set CBC and IV on OAES context\n");
return -1;
}
if (oaes_key_import_data(oaesContext, (const unsigned char*)aesKeyData, aesKeyDataLength) != OAES_RET_SUCCESS)
{
Limelog("Failed to import AES key data\n");
return -1;
}
LbqInitializeLinkedBlockingQueue(&packetQueue, 30);
initialized = 1;
return 0;
}
OAES_CTX * oaes_alloc(void)
{
oaes_ctx * _ctx = (oaes_ctx *) calloc( sizeof( oaes_ctx ), 1 );
if( NULL == _ctx )
return NULL;
#ifdef OAES_HAVE_ISAAC
{
ub4 _i = 0;
char _seed[RANDSIZ + 1];
_ctx->rctx = (randctx *) calloc( sizeof( randctx ), 1 );
if( NULL == _ctx->rctx )
{
free( _ctx );
return NULL;
}
oaes_get_seed( _seed );
memset( _ctx->rctx->randrsl, 0, RANDSIZ );
memcpy( _ctx->rctx->randrsl, _seed, RANDSIZ );
randinit( _ctx->rctx, TRUE);
}
#else
srand( oaes_get_seed() );
#endif // OAES_HAVE_ISAAC
_ctx->key = NULL;
oaes_set_option( _ctx, OAES_OPTION_CBC, NULL );
#ifdef OAES_DEBUG
_ctx->step_cb = NULL;
oaes_set_option( _ctx, OAES_OPTION_STEP_OFF, NULL );
#endif // OAES_DEBUG
return (OAES_CTX *) _ctx;
}
// caller must free b->out if it's not NULL
static OAES_RET _do_aes_decrypt(do_block *b)
{
OAES_CTX * ctx = NULL;
OAES_RET _rc = OAES_RET_SUCCESS;
if( NULL == b )
return OAES_RET_ARG1;
ctx = oaes_alloc();
if( NULL == ctx )
{
fprintf(stderr, "Error: Failed to initialize OAES.\n");
return OAES_RET_MEM;
}
if( _is_ecb )
if( OAES_RET_SUCCESS != oaes_set_option( ctx, OAES_OPTION_ECB, NULL ) )
fprintf(stderr, "Error: Failed to set OAES options.\n");
oaes_key_import_data( ctx, _key_data, _key_data_len );
b->out = NULL;
b->out_len = 0;
_rc = oaes_decrypt( ctx,
b->in, b->in_len, b->out, &(b->out_len) );
if( OAES_RET_SUCCESS != _rc )
{
fprintf(stderr, "Error: Failed to decrypt.\n");
oaes_free(&ctx);
return _rc;
}
b->out = (uint8_t *) calloc(b->out_len, sizeof(uint8_t));
if( NULL == b->out )
{
fprintf(stderr, "Error: Failed to allocate memory.\n");
oaes_free(&ctx);
return OAES_RET_MEM;
}
_rc = oaes_decrypt( ctx,
b->in, b->in_len, b->out, &(b->out_len) );
if( OAES_RET_SUCCESS != oaes_free(&ctx) )
fprintf(stderr, "Error: Failed to uninitialize OAES.\n");
return _rc;
}
/* M.new(nonce_string, key_index, initial_vector) returns aes_ctx */
static int api_new( lua_State *L) {
size_t size_nonce;
const uint8_t *nonce = (const uint8_t *) luaL_checklstring( L, 1, & size_nonce);
uint8_t key_CK [128/8];
int idx_K = luaL_checkinteger( L, 2)-1;
size_t initial_vector_length;
const char *initial_vector = luaL_optlstring( L, 3, NULL, & initial_vector_length);
if( initial_vector && initial_vector_length != 128/8) {
luaL_error( L, "Initial vector must be 16 bytes long");
}
OAES_CTX *ctx = oaes_alloc();
if( ! ctx) return 0;
get_cipher_key( nonce, size_nonce, idx_K, key_CK, 128/8);
oaes_key_import_data( ctx, key_CK, 128/8);
if( initial_vector) oaes_set_option( ctx, OAES_OPTION_CBC, initial_vector);
* (OAES_CTX **) lua_newuserdata( L, sizeof( ctx)) = ctx;
luaL_newmetatable( L, "OAES_CTX");
lua_setmetatable( L, -2);
return 1;
}
int main(int argc, char** argv)
{
size_t _i;
OAES_CTX * ctx = NULL;
uint8_t *_encbuf, *_decbuf, *_key_data = NULL, *_bin_data = NULL;
size_t _encbuf_len, _decbuf_len, _buf_len;
size_t _key_data_len = 0, _bin_data_len = 0;
char *_buf;
short _is_ecb = 0, _is_bin = 0;
char * _text = NULL, * _key_text = NULL;
int _key_len = 128;
uint8_t _iv[OAES_BLOCK_SIZE] = "";
uint8_t _pad = 0;
if( argc < 2 )
{
usage( argv[0] );
return EXIT_FAILURE;
}
for( _i = 1; _i < argc; _i++ )
{
int _found = 0;
if( 0 == strcmp( argv[_i], "-nostep" ) )
{
_found = 1;
_is_step = 0;
}
if( 0 == strcmp( argv[_i], "-ecb" ) )
{
_found = 1;
_is_ecb = 1;
}
if( 0 == strcmp( argv[_i], "-bin" ) )
{
_found = 1;
_is_bin = 1;
}
if( 0 == strcmp( argv[_i], "-key" ) )
{
_found = 1;
_i++; // len
if( _i >= argc )
{
printf("Error: No value specified for '-%s'.\n",
"key");
usage( argv[0] );
return EXIT_FAILURE;
}
_key_len = atoi( argv[_i] );
switch( _key_len )
{
case 128:
case 192:
case 256:
break;
default:
_key_text = argv[_i];
if( to_binary( NULL, &_key_data_len, _key_text ) )
{
printf( "Error: Invalid value [%s] specified for '-%s'.\n",
argv[_i], "key" );
return EXIT_FAILURE;
}
switch( _key_data_len )
{
case 16:
case 24:
case 32:
break;
default:
printf("Error: key_data [%s] specified for '-%s' has an invalid "
"size.\n", argv[_i], "key");
usage( argv[0] );
return EXIT_FAILURE;
}
}
}
if( 0 == _found )
{
if( _text )
{
printf("Error: Invalid option '%s'.\n", argv[_i]);
usage( argv[0] );
return EXIT_FAILURE;
}
else
{
_text = argv[_i];
if( _is_bin && to_binary( NULL, &_bin_data_len, _text ) )
{
printf( "Error: Invalid value [%s] specified for '-%s'.\n",
argv[_i], "bin" );
return EXIT_FAILURE;
}
}
}
}
if( NULL == _text )
{
usage( argv[0] );
return EXIT_FAILURE;
}
if( _is_step )
printf( "\nEnabling step mode, press Return to step.\n\n" );
if( _is_bin )
{
_bin_data = (uint8_t *) calloc(_bin_data_len, sizeof(uint8_t));
if( NULL == _bin_data )
{
printf( "Error: Failed to allocate memory.\n" );
return EXIT_FAILURE;
}
if( to_binary( _bin_data, &_bin_data_len, _text ) )
{
printf( "Error: Could not load data [%s].\n", _text);
free( _bin_data );
return EXIT_FAILURE;
}
}
else
{
oaes_sprintf( NULL, &_buf_len, (const uint8_t *)_text, strlen(_text));
_buf = (char *) calloc(_buf_len, sizeof(char));
printf( "\n***** plaintext *****\n" );
if( _buf )
{
oaes_sprintf( _buf, &_buf_len,
(const uint8_t *)_text, strlen( _text ) );
printf( "%s", _buf );
}
printf( "\n**********************\n" );
free( _buf );
}
ctx = oaes_alloc();
if( NULL == ctx )
{
printf("Error: Failed to initialize OAES.\n");
if( _bin_data )
free( _bin_data );
return EXIT_FAILURE;
}
if( OAES_RET_SUCCESS != oaes_set_option( ctx, OAES_OPTION_STEP_ON, step_cb ) )
printf("Error: Failed to set OAES options.\n");
if( _is_ecb )
if( OAES_RET_SUCCESS != oaes_set_option( ctx, OAES_OPTION_ECB, NULL ) )
printf("Error: Failed to set OAES options.\n");
if( _key_text )
{
_key_data = (uint8_t *) calloc(_key_data_len, sizeof(uint8_t));
if( NULL == _key_data )
{
printf( "Error: Failed to allocate memory.\n" );
if( _bin_data )
free( _bin_data );
return EXIT_FAILURE;
}
if( to_binary( _key_data, &_key_data_len, _key_text ) )
{
printf( "Error: Could not load key [%s].\n", _key_text);
free( _key_data );
return EXIT_FAILURE;
}
oaes_key_import_data( ctx, _key_data, _key_data_len );
}
else
switch( _key_len )
{
case 128:
if( OAES_RET_SUCCESS != oaes_key_gen_128(ctx) )
printf("Error: Failed to generate OAES %d bit key.\n", _key_len);
break;
case 192:
if( OAES_RET_SUCCESS != oaes_key_gen_192(ctx) )
printf("Error: Failed to generate OAES %d bit key.\n", _key_len);
break;
case 256:
if( OAES_RET_SUCCESS != oaes_key_gen_256(ctx) )
printf("Error: Failed to generate OAES %d bit key.\n", _key_len);
break;
default:
break;
}
if( _bin_data )
{
if( OAES_RET_SUCCESS != oaes_encrypt( ctx,
_bin_data, _bin_data_len, NULL, &_encbuf_len, NULL, NULL ) )
printf("Error: Failed to retrieve required buffer size for encryption.\n");
_encbuf = (uint8_t *) calloc(_encbuf_len, sizeof(uint8_t));
if( NULL == _encbuf )
{
printf( "Error: Failed to allocate memory.\n" );
if( _key_data )
free( _key_data );
free( _bin_data );
return EXIT_FAILURE;
}
printf( "\n" );
if( OAES_RET_SUCCESS != oaes_encrypt( ctx,
_bin_data, _bin_data_len, _encbuf, &_encbuf_len, _iv, &_pad ) )
printf("Error: Encryption failed.\n");
printf( "\n**********************\n\n" );
}
else
{
if( OAES_RET_SUCCESS != oaes_encrypt( ctx,
(const uint8_t *)_text, strlen( _text ), NULL, &_encbuf_len,
NULL, NULL ) )
printf("Error: Failed to retrieve required buffer size for encryption.\n");
_encbuf = (uint8_t *) calloc(_encbuf_len, sizeof(uint8_t));
if( NULL == _encbuf )
{
printf( "Error: Failed to allocate memory.\n" );
if( _key_data )
free( _key_data );
return EXIT_FAILURE;
}
printf( "\n" );
if( OAES_RET_SUCCESS != oaes_encrypt( ctx,
(const uint8_t *)_text, strlen( _text ), _encbuf, &_encbuf_len,
_iv, &_pad ))
printf("Error: Encryption failed.\n");
printf( "\n**********************\n\n" );
}
if( OAES_RET_SUCCESS != oaes_decrypt( ctx,
_encbuf, _encbuf_len, NULL, &_decbuf_len, NULL, NULL ) )
printf("Error: Failed to retrieve required buffer size for encryption.\n");
_decbuf = (uint8_t *) calloc(_decbuf_len, sizeof(uint8_t));
if( NULL == _decbuf )
{
printf( "Error: Failed to allocate memory.\n" );
if( _key_data )
free( _key_data );
if( _bin_data )
free( _bin_data );
free( _encbuf );
return EXIT_FAILURE;
}
if( OAES_RET_SUCCESS != oaes_decrypt( ctx,
_encbuf, _encbuf_len, _decbuf, &_decbuf_len, _iv, _pad ) )
printf("Error: Decryption failed.\n");
if( OAES_RET_SUCCESS != oaes_free( &ctx ) )
printf("Error: Failed to uninitialize OAES.\n");
oaes_sprintf( NULL, &_buf_len, _encbuf, _encbuf_len );
_buf = (char *) calloc(_buf_len, sizeof(char));
printf( "\n***** cyphertext *****\n" );
if( _buf )
{
oaes_sprintf( _buf, &_buf_len, _encbuf, _encbuf_len );
printf( "%s", _buf );
}
printf( "\n**********************\n" );
free( _buf );
oaes_sprintf( NULL, &_buf_len, _decbuf, _decbuf_len );
_buf = (char *) calloc(_buf_len, sizeof(char));
printf( "\n***** plaintext *****\n" );
if( _buf )
{
oaes_sprintf( _buf, &_buf_len, _decbuf, _decbuf_len );
printf( "%s", _buf );
}
printf( "\n**********************\n\n" );
free( _buf );
free( _encbuf );
free( _decbuf );
if( _key_data )
free( _key_data );
if( _bin_data )
free( _bin_data );
return (EXIT_SUCCESS);
}
int main(int argc, char** argv)
{
size_t _i;
OAES_CTX * ctx = NULL;
uint8_t *_encbuf, *_decbuf;
size_t _encbuf_len, _decbuf_len, _buf_len;
char *_buf;
short _is_ecb = 0;
char * _text = NULL;
int _key_len = 128;
if( argc < 2 )
{
usage( argv[0] );
return EXIT_FAILURE;
}
for( _i = 1; _i < argc; _i++ )
{
int _found = 0;
if( 0 == strcmp( argv[_i], "-ecb" ) )
{
_found = 1;
_is_ecb = 1;
}
if( 0 == strcmp( argv[_i], "-key" ) )
{
_found = 1;
_i++; // len
if( _i >= argc )
{
printf("Error: No value specified for '-%s'.\n",
"key");
usage( argv[0] );
return EXIT_FAILURE;
}
_key_len = atoi( argv[_i] );
switch( _key_len )
{
case 128:
case 192:
case 256:
break;
default:
printf("Error: Invalid value [%d] specified for '-%s'.\n",
_key_len, "key");
usage( argv[0] );
return EXIT_FAILURE;
}
}
if( 0 == _found )
{
if( _text )
{
printf("Error: Invalid option '%s'.\n", argv[_i]);
usage( argv[0] );
return EXIT_FAILURE;
}
else
{
_text = (char *) calloc(strlen( argv[_i] ) + 1, sizeof(char));
if( NULL == _text )
{
printf("Error: Failed to allocate memory.\n", argv[_i]);
return EXIT_FAILURE;
}
strcpy( _text, argv[_i] );
}
}
}
if( NULL == _text )
{
usage( argv[0] );
return EXIT_FAILURE;
}
oaes_sprintf( NULL, &_buf_len,
(const uint8_t *)_text, strlen( _text ) );
_buf = (char *) calloc(_buf_len, sizeof(char));
printf( "\n***** plaintext *****\n" );
if( _buf )
{
oaes_sprintf( _buf, &_buf_len,
(const uint8_t *)_text, strlen( _text ) );
printf( "%s", _buf );
}
printf( "\n**********************\n" );
free( _buf );
ctx = oaes_alloc();
if( NULL == ctx )
{
printf("Error: Failed to initialize OAES.\n");
free( _text );
return EXIT_FAILURE;
}
if( _is_ecb )
if( OAES_RET_SUCCESS != oaes_set_option( ctx, OAES_OPTION_ECB, NULL ) )
printf("Error: Failed to set OAES options.\n");
switch( _key_len )
{
case 128:
if( OAES_RET_SUCCESS != oaes_key_gen_128(ctx) )
printf("Error: Failed to generate OAES %d bit key.\n", _key_len);
break;
case 192:
if( OAES_RET_SUCCESS != oaes_key_gen_192(ctx) )
printf("Error: Failed to generate OAES %d bit key.\n", _key_len);
break;
case 256:
if( OAES_RET_SUCCESS != oaes_key_gen_256(ctx) )
printf("Error: Failed to generate OAES %d bit key.\n", _key_len);
break;
default:
break;
}
if( OAES_RET_SUCCESS != oaes_encrypt( ctx,
(const uint8_t *)_text, strlen( _text ), NULL, &_encbuf_len ) )
printf("Error: Failed to retrieve required buffer size for encryption.\n");
_encbuf = (uint8_t *) calloc( _encbuf_len, sizeof(uint8_t) );
if( NULL == _encbuf )
{
printf( "Error: Failed to allocate memory.\n" );
free( _text );
return EXIT_FAILURE;
}
if( OAES_RET_SUCCESS != oaes_encrypt( ctx,
(const uint8_t *)_text, strlen( _text ), _encbuf, &_encbuf_len ) )
printf("Error: Encryption failed.\n");
if( OAES_RET_SUCCESS != oaes_decrypt( ctx,
_encbuf, _encbuf_len, NULL, &_decbuf_len ) )
printf("Error: Failed to retrieve required buffer size for encryption.\n");
_decbuf = (uint8_t *) calloc( _decbuf_len, sizeof(uint8_t) );
if( NULL == _decbuf )
{
printf( "Error: Failed to allocate memory.\n" );
free( _text );
free( _encbuf );
return EXIT_FAILURE;
}
if( OAES_RET_SUCCESS != oaes_decrypt( ctx,
_encbuf, _encbuf_len, _decbuf, &_decbuf_len ) )
printf("Error: Decryption failed.\n");
if( OAES_RET_SUCCESS != oaes_free( &ctx ) )
printf("Error: Failed to uninitialize OAES.\n");
oaes_sprintf( NULL, &_buf_len, _encbuf, _encbuf_len );
_buf = (char *) calloc(_buf_len, sizeof(char));
printf( "\n***** cyphertext *****\n" );
if( _buf )
{
oaes_sprintf( _buf, &_buf_len, _encbuf, _encbuf_len );
printf( "%s", _buf );
}
printf( "\n**********************\n" );
free( _buf );
oaes_sprintf( NULL, &_buf_len, _decbuf, _decbuf_len );
_buf = (char *) calloc(_buf_len, sizeof( char));
printf( "\n***** plaintext *****\n" );
if( _buf )
{
oaes_sprintf( _buf, &_buf_len, _decbuf, _decbuf_len );
printf( "%s", _buf );
}
printf( "\n**********************\n\n" );
free( _buf );
free( _encbuf );
free( _decbuf );
free( _text );
return (EXIT_SUCCESS);
}
