astyle --recursive --indent=spaces=2 --style=kr --indent-col1-comments --break-blocks --convert-tabs --max-code-length=200
This is done for better merging branch/LG_PRE_RELEASE_0.3 into trunk (same process is applied on this branch) git-svn-id: http://svn.eurecom.fr/openair4G/trunk@7073 818b1a75-f10b-46b9-bf7c-635c3b92a50f
This commit is contained in:
Lionel Gauthier
+147
-140
@@ -45,193 +45,200 @@
|
||||
|
||||
int stream_encrypt_eea0(stream_cipher_t *stream_cipher, uint8_t **out)
|
||||
{
|
||||
uint8_t *data = NULL;
|
||||
uint8_t *data = NULL;
|
||||
|
||||
uint32_t byte_length;
|
||||
uint32_t byte_length;
|
||||
|
||||
DevAssert(stream_cipher != NULL);
|
||||
DevAssert(out != NULL);
|
||||
DevAssert(stream_cipher != NULL);
|
||||
DevAssert(out != NULL);
|
||||
|
||||
LOG_D(OSA, "Entering stream_encrypt_eea0, bits length %u, bearer %u, "
|
||||
"count %u, direction %s\n", stream_cipher->blength,
|
||||
stream_cipher->bearer, stream_cipher->count, stream_cipher->direction == SECU_DIRECTION_DOWNLINK ?
|
||||
"Downlink" : "Uplink");
|
||||
LOG_D(OSA, "Entering stream_encrypt_eea0, bits length %u, bearer %u, "
|
||||
"count %u, direction %s\n", stream_cipher->blength,
|
||||
stream_cipher->bearer, stream_cipher->count, stream_cipher->direction == SECU_DIRECTION_DOWNLINK ?
|
||||
"Downlink" : "Uplink");
|
||||
|
||||
byte_length = (stream_cipher->blength + 7) >> 3;
|
||||
byte_length = (stream_cipher->blength + 7) >> 3;
|
||||
|
||||
if (*out == NULL) {
|
||||
/* User did not provide output buffer */
|
||||
data = malloc(byte_length);
|
||||
*out = data;
|
||||
} else {
|
||||
data = *out;
|
||||
}
|
||||
if (*out == NULL) {
|
||||
/* User did not provide output buffer */
|
||||
data = malloc(byte_length);
|
||||
*out = data;
|
||||
} else {
|
||||
data = *out;
|
||||
}
|
||||
|
||||
memcpy (data, stream_cipher->message, byte_length);
|
||||
memcpy (data, stream_cipher->message, byte_length);
|
||||
|
||||
return 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int stream_encrypt_eea1(stream_cipher_t *stream_cipher, uint8_t **out)
|
||||
{
|
||||
osa_snow_3g_context_t snow_3g_context;
|
||||
int n ;
|
||||
int i = 0;
|
||||
uint32_t zero_bit = 0;
|
||||
uint32_t byte_length;
|
||||
uint32_t *KS;
|
||||
uint32_t K[4],IV[4];
|
||||
osa_snow_3g_context_t snow_3g_context;
|
||||
int n ;
|
||||
int i = 0;
|
||||
uint32_t zero_bit = 0;
|
||||
uint32_t byte_length;
|
||||
uint32_t *KS;
|
||||
uint32_t K[4],IV[4];
|
||||
|
||||
DevAssert(stream_cipher != NULL);
|
||||
DevAssert(stream_cipher->key != NULL);
|
||||
DevAssert(stream_cipher->key_length == 16);
|
||||
DevAssert(out != NULL);
|
||||
DevAssert(stream_cipher != NULL);
|
||||
DevAssert(stream_cipher->key != NULL);
|
||||
DevAssert(stream_cipher->key_length == 16);
|
||||
DevAssert(out != NULL);
|
||||
|
||||
n = ( stream_cipher->blength + 31 ) / 32;
|
||||
zero_bit = stream_cipher->blength & 0x7;
|
||||
byte_length = stream_cipher->blength >> 3;
|
||||
n = ( stream_cipher->blength + 31 ) / 32;
|
||||
zero_bit = stream_cipher->blength & 0x7;
|
||||
byte_length = stream_cipher->blength >> 3;
|
||||
|
||||
memset(&snow_3g_context, 0, sizeof(snow_3g_context));
|
||||
/*Initialisation*/
|
||||
/* Load the confidentiality key for SNOW 3G initialization as in section
|
||||
3.4. */
|
||||
memcpy(K+3,stream_cipher->key+0,4); /*K[3] = key[0]; we assume
|
||||
K[3]=key[0]||key[1]||...||key[31] , with key[0] the
|
||||
* most important bit of key*/
|
||||
memcpy(K+2,stream_cipher->key+4,4); /*K[2] = key[1];*/
|
||||
memcpy(K+1,stream_cipher->key+8,4); /*K[1] = key[2];*/
|
||||
memcpy(K+0,stream_cipher->key+12,4); /*K[0] = key[3]; we assume
|
||||
K[0]=key[96]||key[97]||...||key[127] , with key[127] the
|
||||
* least important bit of key*/
|
||||
K[3] = hton_int32(K[3]);
|
||||
K[2] = hton_int32(K[2]);
|
||||
K[1] = hton_int32(K[1]);
|
||||
K[0] = hton_int32(K[0]);
|
||||
/* Prepare the initialization vector (IV) for SNOW 3G initialization as in
|
||||
section 3.4. */
|
||||
IV[3] = stream_cipher->count;
|
||||
IV[2] = ((((uint32_t)stream_cipher->bearer) << 3) | ((((uint32_t)stream_cipher->direction) & 0x1) << 2)) << 24;
|
||||
IV[1] = IV[3];
|
||||
IV[0] = IV[2];
|
||||
memset(&snow_3g_context, 0, sizeof(snow_3g_context));
|
||||
/*Initialisation*/
|
||||
/* Load the confidentiality key for SNOW 3G initialization as in section
|
||||
3.4. */
|
||||
memcpy(K+3,stream_cipher->key+0,4); /*K[3] = key[0]; we assume
|
||||
K[3]=key[0]||key[1]||...||key[31] , with key[0] the
|
||||
* most important bit of key*/
|
||||
memcpy(K+2,stream_cipher->key+4,4); /*K[2] = key[1];*/
|
||||
memcpy(K+1,stream_cipher->key+8,4); /*K[1] = key[2];*/
|
||||
memcpy(K+0,stream_cipher->key+12,4); /*K[0] = key[3]; we assume
|
||||
K[0]=key[96]||key[97]||...||key[127] , with key[127] the
|
||||
* least important bit of key*/
|
||||
K[3] = hton_int32(K[3]);
|
||||
K[2] = hton_int32(K[2]);
|
||||
K[1] = hton_int32(K[1]);
|
||||
K[0] = hton_int32(K[0]);
|
||||
/* Prepare the initialization vector (IV) for SNOW 3G initialization as in
|
||||
section 3.4. */
|
||||
IV[3] = stream_cipher->count;
|
||||
IV[2] = ((((uint32_t)stream_cipher->bearer) << 3) | ((((uint32_t)stream_cipher->direction) & 0x1) << 2)) << 24;
|
||||
IV[1] = IV[3];
|
||||
IV[0] = IV[2];
|
||||
|
||||
/* Run SNOW 3G algorithm to generate sequence of key stream bits KS*/
|
||||
osa_snow3g_initialize(K, IV, &snow_3g_context);
|
||||
KS = (uint32_t *)malloc(4*n);
|
||||
osa_snow3g_generate_key_stream(n,(uint32_t*)KS, &snow_3g_context);
|
||||
/* Run SNOW 3G algorithm to generate sequence of key stream bits KS*/
|
||||
osa_snow3g_initialize(K, IV, &snow_3g_context);
|
||||
KS = (uint32_t *)malloc(4*n);
|
||||
osa_snow3g_generate_key_stream(n,(uint32_t*)KS, &snow_3g_context);
|
||||
|
||||
if (zero_bit > 0) {
|
||||
if (zero_bit > 0) {
|
||||
|
||||
KS[n - 1] = KS[n - 1] & (uint32_t)(0xFFFFFFFF << (8 - zero_bit));
|
||||
}
|
||||
for (i=0;i<n;i++) {
|
||||
KS[i] = hton_int32(KS[i]);
|
||||
}
|
||||
KS[n - 1] = KS[n - 1] & (uint32_t)(0xFFFFFFFF << (8 - zero_bit));
|
||||
}
|
||||
|
||||
/* Exclusive-OR the input data with keystream to generate the output bit
|
||||
stream */
|
||||
for (i=0;i<n*4;i++) {
|
||||
stream_cipher->message[i] ^= *(((uint8_t*)KS)+i);
|
||||
}
|
||||
if (zero_bit > 0) {
|
||||
int ceil_index = (stream_cipher->blength+7) >> 3;
|
||||
stream_cipher->message[ceil_index - 1] = stream_cipher->message[ceil_index - 1] & (uint8_t)(0xFF << (8 - zero_bit));
|
||||
}
|
||||
free(KS);
|
||||
*out = stream_cipher->message;
|
||||
return 0;
|
||||
for (i=0; i<n; i++) {
|
||||
KS[i] = hton_int32(KS[i]);
|
||||
}
|
||||
|
||||
/* Exclusive-OR the input data with keystream to generate the output bit
|
||||
stream */
|
||||
for (i=0; i<n*4; i++) {
|
||||
stream_cipher->message[i] ^= *(((uint8_t*)KS)+i);
|
||||
}
|
||||
|
||||
if (zero_bit > 0) {
|
||||
int ceil_index = (stream_cipher->blength+7) >> 3;
|
||||
stream_cipher->message[ceil_index - 1] = stream_cipher->message[ceil_index - 1] & (uint8_t)(0xFF << (8 - zero_bit));
|
||||
}
|
||||
|
||||
free(KS);
|
||||
*out = stream_cipher->message;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int stream_encrypt_eea2(stream_cipher_t *stream_cipher, uint8_t **out)
|
||||
{
|
||||
uint8_t m[16];
|
||||
uint32_t local_count;
|
||||
uint8_t m[16];
|
||||
uint32_t local_count;
|
||||
|
||||
void *ctx;
|
||||
uint8_t *data = NULL;
|
||||
void *ctx;
|
||||
uint8_t *data = NULL;
|
||||
|
||||
uint32_t zero_bit = 0;
|
||||
uint32_t byte_length;
|
||||
uint32_t zero_bit = 0;
|
||||
uint32_t byte_length;
|
||||
|
||||
DevAssert(stream_cipher != NULL);
|
||||
DevAssert(out != NULL);
|
||||
DevAssert(stream_cipher != NULL);
|
||||
DevAssert(out != NULL);
|
||||
|
||||
LOG_D(OSA, "Entering stream_encrypt_eea2, bits length %u, bearer %u, "
|
||||
"count %u, direction %s\n", stream_cipher->blength,
|
||||
stream_cipher->bearer, stream_cipher->count, stream_cipher->direction == SECU_DIRECTION_DOWNLINK ?
|
||||
"Downlink" : "Uplink");
|
||||
LOG_D(OSA, "Entering stream_encrypt_eea2, bits length %u, bearer %u, "
|
||||
"count %u, direction %s\n", stream_cipher->blength,
|
||||
stream_cipher->bearer, stream_cipher->count, stream_cipher->direction == SECU_DIRECTION_DOWNLINK ?
|
||||
"Downlink" : "Uplink");
|
||||
|
||||
zero_bit = stream_cipher->blength & 0x7;
|
||||
zero_bit = stream_cipher->blength & 0x7;
|
||||
|
||||
byte_length = stream_cipher->blength >> 3;
|
||||
if (zero_bit > 0)
|
||||
byte_length += 1;
|
||||
byte_length = stream_cipher->blength >> 3;
|
||||
|
||||
ctx = malloc(nettle_aes128.context_size);
|
||||
if (zero_bit > 0)
|
||||
byte_length += 1;
|
||||
|
||||
if (*out == NULL) {
|
||||
/* User provided output buffer */
|
||||
data = malloc(byte_length);
|
||||
*out = data;
|
||||
} else {
|
||||
data = *out;
|
||||
}
|
||||
ctx = malloc(nettle_aes128.context_size);
|
||||
|
||||
local_count = hton_int32(stream_cipher->count);
|
||||
if (*out == NULL) {
|
||||
/* User provided output buffer */
|
||||
data = malloc(byte_length);
|
||||
*out = data;
|
||||
} else {
|
||||
data = *out;
|
||||
}
|
||||
|
||||
memset(m, 0, sizeof(m));
|
||||
memcpy(&m[0], &local_count, 4);
|
||||
m[4] = ((stream_cipher->bearer & 0x1F) << 3) |
|
||||
((stream_cipher->direction & 0x01) << 2);
|
||||
/* Other bits are 0 */
|
||||
local_count = hton_int32(stream_cipher->count);
|
||||
|
||||
memset(m, 0, sizeof(m));
|
||||
memcpy(&m[0], &local_count, 4);
|
||||
m[4] = ((stream_cipher->bearer & 0x1F) << 3) |
|
||||
((stream_cipher->direction & 0x01) << 2);
|
||||
/* Other bits are 0 */
|
||||
|
||||
#if defined(SECU_DEBUG)
|
||||
{
|
||||
int i;
|
||||
char payload[6 * byte_length + 1];
|
||||
int index = 0;
|
||||
{
|
||||
int i;
|
||||
char payload[6 * byte_length + 1];
|
||||
int index = 0;
|
||||
|
||||
for (i = 0; i < byte_length; i++)
|
||||
index += sprintf(&payload[index], "0x%02x ", stream_cipher->message[i]);
|
||||
LOG_D(OSA, "Original message: %s\n", payload);
|
||||
}
|
||||
for (i = 0; i < byte_length; i++)
|
||||
index += sprintf(&payload[index], "0x%02x ", stream_cipher->message[i]);
|
||||
|
||||
LOG_D(OSA, "Original message: %s\n", payload);
|
||||
}
|
||||
#endif
|
||||
|
||||
nettle_aes128.set_encrypt_key(ctx, stream_cipher->key_length,
|
||||
stream_cipher->key);
|
||||
nettle_aes128.set_encrypt_key(ctx, stream_cipher->key_length,
|
||||
stream_cipher->key);
|
||||
|
||||
nettle_ctr_crypt(ctx, nettle_aes128.encrypt,
|
||||
nettle_aes128.block_size, m,
|
||||
byte_length, data, stream_cipher->message);
|
||||
nettle_ctr_crypt(ctx, nettle_aes128.encrypt,
|
||||
nettle_aes128.block_size, m,
|
||||
byte_length, data, stream_cipher->message);
|
||||
|
||||
if (zero_bit > 0)
|
||||
data[byte_length - 1] = data[byte_length - 1] & (uint8_t)(0xFF << (8 - zero_bit));
|
||||
if (zero_bit > 0)
|
||||
data[byte_length - 1] = data[byte_length - 1] & (uint8_t)(0xFF << (8 - zero_bit));
|
||||
|
||||
free(ctx);
|
||||
free(ctx);
|
||||
|
||||
#if defined(SECU_DEBUG)
|
||||
{
|
||||
int i;
|
||||
char payload[6 * byte_length + 1];
|
||||
int index = 0;
|
||||
{
|
||||
int i;
|
||||
char payload[6 * byte_length + 1];
|
||||
int index = 0;
|
||||
|
||||
for (i = 0; i < byte_length; i++)
|
||||
index += sprintf(&payload[index], "0x%02x ", data[i]);
|
||||
LOG_D(OSA, "Encrypted message: %s\n", payload);
|
||||
}
|
||||
for (i = 0; i < byte_length; i++)
|
||||
index += sprintf(&payload[index], "0x%02x ", data[i]);
|
||||
|
||||
LOG_D(OSA, "Encrypted message: %s\n", payload);
|
||||
}
|
||||
#endif
|
||||
|
||||
return 0;
|
||||
return 0;
|
||||
}
|
||||
|
||||
int stream_encrypt(uint8_t algorithm, stream_cipher_t *stream_cipher, uint8_t **out)
|
||||
{
|
||||
if (algorithm == EEA0_ALG_ID) {
|
||||
return stream_encrypt_eea0(stream_cipher, out);
|
||||
} else if (algorithm == EEA1_128_ALG_ID) {
|
||||
return stream_encrypt_eea1(stream_cipher, out);
|
||||
} else if (algorithm == EEA2_128_ALG_ID) {
|
||||
return stream_encrypt_eea2(stream_cipher, out);
|
||||
}
|
||||
LOG_E(OSA, "Provided encryption algorithm is currently not supported = %u\n", algorithm);
|
||||
return -1;
|
||||
if (algorithm == EEA0_ALG_ID) {
|
||||
return stream_encrypt_eea0(stream_cipher, out);
|
||||
} else if (algorithm == EEA1_128_ALG_ID) {
|
||||
return stream_encrypt_eea1(stream_cipher, out);
|
||||
} else if (algorithm == EEA2_128_ALG_ID) {
|
||||
return stream_encrypt_eea2(stream_cipher, out);
|
||||
}
|
||||
|
||||
LOG_E(OSA, "Provided encryption algorithm is currently not supported = %u\n", algorithm);
|
||||
return -1;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user