| ︙ | | |
21
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25
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|
-
+
+
+
|
const char *hex = "0123456789abcdef";
/* Macros */
#define BUFFER_SIZE 65536
#define CHAN_EOF 0x10
#define READ_DELAY 5
/* Digest format and operation */
/* Digest format (bits 0-3) and operation (bits 4-7) */
#define BIN_FORMAT 0x01
#define HEX_FORMAT 0x02
/*#define B64_FORMAT 0x04*/
#define IS_XOF 0x08
#define TYPE_MD 0x10
#define TYPE_HMAC 0x20
#define TYPE_CMAC 0x40
#define TYPE_MAC 0x80
/*******************************************************************/
/*
* This structure defines the per-instance state of a digest operation.
*/
typedef struct DigestState {
Tcl_Channel self; /* This socket channel */
Tcl_TimerToken timer; /* Timer for read events */
int flags; /* Chan config flags */
int watchMask; /* Current WatchProc mask */
int mode; /* Current mode of parent channel */
int format; /* Digest format and operation */
int length; /* Digest length in bytes */
Tcl_Interp *interp; /* Current interpreter */
EVP_MD_CTX *ctx; /* MD Context */
HMAC_CTX *hctx; /* HMAC context */
CMAC_CTX *cctx; /* CMAC context */
Tcl_Command token; /* Command token */
} DigestState;
|
| ︙ | | |
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|
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+
|
* Digest structure pointer
*
* Side effects:
* Creates structure
*
*-------------------------------------------------------------------
*/
DigestState *DigestStateNew(Tcl_Interp *interp, int format) {
DigestState *DigestStateNew(Tcl_Interp *interp, int format, int length) {
DigestState *statePtr;
statePtr = (DigestState *) ckalloc((unsigned) sizeof(DigestState));
if (statePtr != NULL) {
memset(statePtr, 0, sizeof(DigestState));
statePtr->self = NULL; /* This socket channel */
statePtr->timer = NULL; /* Timer to flush data */
statePtr->flags = 0; /* Chan config flags */
statePtr->watchMask = 0; /* Current WatchProc mask */
statePtr->mode = 0; /* Current mode of parent channel */
statePtr->format = format; /* Digest format and operation */
statePtr->length = length; /* Digest length in bytes */
statePtr->interp = interp; /* Current interpreter */
statePtr->ctx = NULL; /* MD Context */
statePtr->hctx = NULL; /* HMAC Context */
statePtr->cctx = NULL; /* CMAC Context */
statePtr->token = NULL; /* Command token */
}
return statePtr;
|
| ︙ | | |
154
155
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|
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|
+
-
-
-
+
+
+
+
+
+
+
+
+
+
-
-
-
+
+
+
+
+
-
-
-
+
+
+
+
|
const EVP_CIPHER *cipher = NULL;
const void *key = NULL;
Tcl_Size key_len = 0;
dprintf("Called");
/* Get digest */
if (type != TYPE_CMAC) {
md = Util_GetDigest(interp, digestObj, type != TYPE_CMAC);
if (md == NULL && type != TYPE_CMAC) {
return TCL_ERROR;
cipher = Util_GetCipher(interp, cipherObj, type == TYPE_CMAC);
if (cipher == NULL && type == TYPE_CMAC) {
return TCL_ERROR;
key = (const void *) Util_GetKey(interp, keyObj, &key_len, "key", 0, type != TYPE_MD);
if (key == NULL && type != TYPE_MD) {
return TCL_ERROR;
|
| ︙ | | |
192
193
194
195
196
197
198
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200
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|
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211
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215
216
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219
220
|
-
+
|
}
if (!res) {
Tcl_AppendResult(interp, "Create context failed", (char *) NULL);
return TCL_ERROR;
}
/* Initialize cryptography function */
/* Initialize hash function */
switch(type) {
case TYPE_MD:
res = EVP_DigestInit_ex(statePtr->ctx, md, NULL);
break;
case TYPE_HMAC:
res = HMAC_Init_ex(statePtr->hctx, key, (int) key_len, md, NULL);
break;
|
| ︙ | | |
233
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|
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|
+
|
*-------------------------------------------------------------------
*/
int DigestUpdate(DigestState *statePtr, char *buf, Tcl_Size read, int do_result) {
int res = 0;
dprintf("Called");
/* Update hash function */
switch(statePtr->format & 0xFF0) {
case TYPE_MD:
res = EVP_DigestUpdate(statePtr->ctx, buf, (size_t) read);
break;
case TYPE_HMAC:
res = HMAC_Update(statePtr->hctx, (const unsigned char *) buf, (size_t) read);
break;
|
| ︙ | | |
275
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|
290
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323
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325
|
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+
-
+
+
+
+
-
+
-
-
-
-
+
+
+
|
int DigestFinalize(Tcl_Interp *interp, DigestState *statePtr, Tcl_Obj **resultObj) {
unsigned char md_buf[EVP_MAX_MD_SIZE];
unsigned int ulen;
int res = 0, md_len = 0, type = statePtr->format & 0xFF0;
dprintf("Called");
/* Finalize cryptography function and get result */
/* Finalize hash function and get result */
switch(type) {
case TYPE_MD:
if (!(statePtr->format & IS_XOF)) {
if (!(statePtr->format & IS_XOF) || statePtr->length == 0) {
/* Non XOF or XOF with default length */
res = EVP_DigestFinal_ex(statePtr->ctx, md_buf, &ulen);
md_len = (int) ulen;
} else {
/* XOF with custom length */
md_len = statePtr->length < EVP_MAX_MD_SIZE ? statePtr->length : EVP_MAX_MD_SIZE;
res = EVP_DigestFinalXOF(statePtr->ctx, md_buf, (size_t) EVP_MAX_MD_SIZE);
res = EVP_DigestFinalXOF(statePtr->ctx, md_buf, (size_t) md_len);
md_len = EVP_MAX_MD_SIZE;
size_t size;
res = CMAC_Final(statePtr->cctx, md_buf, &size);
md_len = (int) size;
size_t length;
res = CMAC_Final(statePtr->cctx, md_buf, &length);
md_len = (int) length;
break;
}
}
if (!res) {
if (resultObj == NULL) {
Tcl_AppendResult(interp, "Finalize failed: ", GET_ERR_REASON(), (char *) NULL);
|
| ︙ | | |
778
779
780
781
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783
784
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786
787
788
789
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791
792
|
795
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801
802
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804
805
806
807
808
809
|
-
+
|
*
* Side effects:
* Adds transform to channel and sets result to channel id or error message.
*
*----------------------------------------------------------------------
*/
static int DigestChannelHandler(Tcl_Interp *interp, const char *channel, Tcl_Obj *digestObj,
Tcl_Obj *cipherObj, int format, Tcl_Obj *keyObj, Tcl_Obj *macObj) {
Tcl_Obj *cipherObj, int format, Tcl_Obj *keyObj, Tcl_Obj *macObj, int length) {
int mode; /* OR-ed combination of TCL_READABLE and TCL_WRITABLE */
Tcl_Channel chan;
DigestState *statePtr;
dprintf("Called");
/* Validate args */
|
| ︙ | | |
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
|
824
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827
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829
830
831
832
833
834
835
836
837
838
|
-
+
|
/* Configure channel */
Tcl_SetChannelOption(interp, chan, "-translation", "binary");
if (Tcl_GetChannelBufferSize(chan) < EVP_MAX_MD_SIZE * 2) {
Tcl_SetChannelBufferSize(chan, EVP_MAX_MD_SIZE * 2);
}
/* Create state data structure */
if ((statePtr = DigestStateNew(interp, format)) == NULL) {
if ((statePtr = DigestStateNew(interp, format, length)) == NULL) {
Tcl_AppendResult(interp, "Memory allocation error", (char *) NULL);
return TCL_ERROR;
}
statePtr->self = chan;
statePtr->mode = mode;
/* Initialize hash function */
|
| ︙ | | |
984
985
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988
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1005
|
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1009
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1011
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1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
|
-
+
-
+
|
*
* Side effects:
* Creates command or error message
*
*-------------------------------------------------------------------
*/
int DigestCommandHandler(Tcl_Interp *interp, Tcl_Obj *cmdObj, Tcl_Obj *digestObj,
Tcl_Obj *cipherObj, int format, Tcl_Obj *keyObj, Tcl_Obj *macObj) {
Tcl_Obj *cipherObj, int format, Tcl_Obj *keyObj, Tcl_Obj *macObj, int length) {
DigestState *statePtr;
char *cmdName = Tcl_GetString(cmdObj);
dprintf("Called");
/* Create state data structure */
if ((statePtr = DigestStateNew(interp, format)) == NULL) {
if ((statePtr = DigestStateNew(interp, format, length)) == NULL) {
Tcl_AppendResult(interp, "Memory allocation error", (char *) NULL);
return TCL_ERROR;
}
/* Initialize hash function */
if (DigestInitialize(interp, statePtr, digestObj, cipherObj, keyObj, macObj) != TCL_OK) {
return TCL_ERROR;
|
| ︙ | | |
1033
1034
1035
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1038
1039
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|
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1071
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1077
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1079
|
-
+
-
+
|
*
* Side effects:
* Sets result to message digest or error message
*
*-------------------------------------------------------------------
*/
int DigestDataHandler(Tcl_Interp *interp, Tcl_Obj *dataObj, Tcl_Obj *digestObj,
Tcl_Obj *cipherObj, int format, Tcl_Obj *keyObj, Tcl_Obj *macObj) {
Tcl_Obj *cipherObj, int format, Tcl_Obj *keyObj, Tcl_Obj *macObj, int length) {
unsigned char *data;
Tcl_Size data_len;
DigestState *statePtr;
dprintf("Called");
/* Get data */
data = Tcl_GetByteArrayFromObj(dataObj, &data_len);
if (data == NULL) {
Tcl_SetResult(interp, "No data", NULL);
return TCL_ERROR;
}
/* Create state data structure */
if ((statePtr = DigestStateNew(interp, format)) == NULL) {
if ((statePtr = DigestStateNew(interp, format, length)) == NULL) {
Tcl_AppendResult(interp, "Memory allocation error", (char *) NULL);
return TCL_ERROR;
}
/* Calc Digest */
if (DigestInitialize(interp, statePtr, digestObj, cipherObj, keyObj, macObj) != TCL_OK ||
DigestUpdate(statePtr, (char *) data, data_len, 1) != TCL_OK ||
|
| ︙ | | |
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
|
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
|
-
+
-
+
|
*
* Side effects:
* Result is message digest or error message
*
*-------------------------------------------------------------------
*/
int DigestFileHandler(Tcl_Interp *interp, Tcl_Obj *inFileObj, Tcl_Obj *digestObj,
Tcl_Obj *cipherObj, int format, Tcl_Obj *keyObj, Tcl_Obj *macObj) {
Tcl_Obj *cipherObj, int format, Tcl_Obj *keyObj, Tcl_Obj *macObj, int length) {
DigestState *statePtr;
Tcl_Channel chan = NULL;
unsigned char buf[BUFFER_SIZE];
int res = TCL_OK;
dprintf("Called");
/* Create state data structure */
if ((statePtr = DigestStateNew(interp, format)) == NULL) {
if ((statePtr = DigestStateNew(interp, format, length)) == NULL) {
Tcl_AppendResult(interp, "Memory allocation error", (char *) NULL);
return TCL_ERROR;
}
/* Open file channel */
chan = Tcl_FSOpenFileChannel(interp, inFileObj, "rb", 0444);
if (chan == (Tcl_Channel) NULL) {
|
| ︙ | | |
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
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1158
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1161
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1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
|
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
|
-
+
-
+
+
+
+
-
+
|
return res;
}
/*******************************************************************/
static const char *command_opts [] = { "-bin", "-binary", "-hex", "-hexadecimal",
"-chan", "-channel", "-cipher", "-command", "-data", "-digest", "-file", "-filename",
"-hash", "-key", "-mac", NULL};
"-hash", "-key", "-length", "-mac", "-size", NULL};
enum _command_opts {
_opt_bin, _opt_binary, _opt_hex, _opt_hexadecimal, _opt_chan, _opt_channel, _opt_cipher,
_opt_command, _opt_data, _opt_digest, _opt_file, _opt_filename, _opt_hash, _opt_key, _opt_mac
_opt_command, _opt_data, _opt_digest, _opt_file, _opt_filename, _opt_hash, _opt_key,
_opt_length, _opt_mac, _opt_size
};
/*
*-------------------------------------------------------------------
*
* DigestMain --
*
* Return message digest or Message Authentication Code (MAC) of
* data using user specified hash function.
*
* Returns:
* TCL_OK or TCL_ERROR
*
* Side effects:
* Sets result to message digest or error message
*
*-------------------------------------------------------------------
*/
static int DigestMain(int type, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
int format = HEX_FORMAT; /* Output format */
int length = 0; /* MD length, where 0=default size */
int start = 1, format = HEX_FORMAT, res = TCL_OK;
int start = 1, res = TCL_OK;
Tcl_Size fn;
Tcl_Obj *cipherObj = NULL, *cmdObj = NULL, *dataObj = NULL, *digestObj = NULL;
Tcl_Obj *fileObj = NULL, *keyObj = NULL, *macObj = NULL;
const char *channel = NULL, *opt;
dprintf("Called");
|
| ︙ | | |
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
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1274
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1280
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1289
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1294
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1302
1303
1304
1305
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1307
1308
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1310
1311
1312
1313
1314
1315
1316
1317
|
1278
1279
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1287
1288
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1290
1291
1292
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1294
1295
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1301
1302
1303
1304
1305
1306
1307
1308
1309
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1311
1312
1313
1314
1315
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1317
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1323
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1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
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1343
1344
1345
1346
1347
1348
1349
1350
1351
|
+
+
+
+
+
+
+
+
+
-
+
+
-
+
+
-
+
+
-
+
+
-
+
+
|
break;
case _opt_file:
case _opt_filename:
fileObj = objv[idx];
break;
case _opt_key:
keyObj = objv[idx];
break;
case _opt_length:
case _opt_size:
GET_OPT_INT(objv[idx], &length);
if (length < 1 || length > EVP_MAX_MD_SIZE) {
Tcl_AppendResult(interp, "Invalid length", (char *) NULL);
return TCL_ERROR;
}
break;
case _opt_mac:
macObj = objv[idx];
break;
}
}
/* Check types */
if (type == TYPE_MD) {
if (macObj != NULL) {
type = TYPE_MAC;
} else if (cipherObj != NULL) {
type = TYPE_CMAC;
} else if (keyObj != NULL) {
type = TYPE_HMAC;
}
}
/* Convert MAC to CMAC or HMAC type */
if (type == TYPE_MAC) {
if (macObj != NULL) {
char *macName = Tcl_GetString(macObj);
if (strcmp(macName,"cmac") == 0) {
type = TYPE_CMAC;
} else if (strcmp(macName,"hmac") == 0) {
type = TYPE_HMAC;
} else {
Tcl_AppendResult(interp, "invalid MAC \"", macName, "\"", (char *) NULL);
return TCL_ERROR;
}
} else {
Tcl_AppendResult(interp, "no MAC", (char *) NULL);
return TCL_ERROR;
}
}
/* Calc digest on file, stacked channel, using instance command, or data blob */
if (fileObj != NULL) {
res = DigestFileHandler(interp, fileObj, digestObj, cipherObj, format | type, keyObj, macObj);
res = DigestFileHandler(interp, fileObj, digestObj, cipherObj, format | type, keyObj,
macObj, length);
} else if (channel != NULL) {
res = DigestChannelHandler(interp, channel, digestObj, cipherObj, format | type, keyObj, macObj);
res = DigestChannelHandler(interp, channel, digestObj, cipherObj, format | type, keyObj,
macObj, length);
} else if (cmdObj != NULL) {
res = DigestCommandHandler(interp, cmdObj, digestObj, cipherObj, format | type, keyObj, macObj);
res = DigestCommandHandler(interp, cmdObj, digestObj, cipherObj, format | type, keyObj,
macObj, length);
} else if (dataObj != NULL) {
res = DigestDataHandler(interp, dataObj, digestObj, cipherObj, format | type, keyObj, macObj);
res = DigestDataHandler(interp, dataObj, digestObj, cipherObj, format | type, keyObj,
macObj, length);
} else {
Tcl_AppendResult(interp, "No operation: Use -channel, -command, -data, or -file option", (char *) NULL);
Tcl_AppendResult(interp, "No operation: Use -channel, -command, -data, or -file option",
(char *) NULL);
res = TCL_ERROR;
}
return res;
}
/*
*-------------------------------------------------------------------
|
| ︙ | | |
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
|
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
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1418
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1420
|
-
+
|
} else {
Tcl_WrongNumArgs(interp, 1, objv, "data");
return TCL_ERROR;
}
digestObj = Tcl_NewStringObj(digestName, -1);
Tcl_IncrRefCount(digestObj);
res = DigestDataHandler(interp, dataObj, digestObj, NULL, format, NULL, NULL);
res = DigestDataHandler(interp, dataObj, digestObj, NULL, format, NULL, NULL, EVP_MAX_MD_SIZE);
Tcl_DecrRefCount(digestObj);
return res;
}
int MD4ObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
(void) clientData;
return TemplateCmd(interp, objc, objv, "md4", HEX_FORMAT | TYPE_MD);
|
| ︙ | | |
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
|
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463
1464
1465
1466
1467
1468
1469
1470
1471
1472
1473
|
+
|
* Side effects:
* Creates commands
*
*-------------------------------------------------------------------
*/
int Tls_DigestCommands(Tcl_Interp *interp) {
Tcl_CreateObjCommand(interp, "::tls::digest", MdObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "::tls::hash", MdObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "::tls::md", MdObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "::tls::cmac", CMACObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "::tls::hmac", HMACObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "::tls::mac", MACObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "::tls::md4", MD4ObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "::tls::md5", MD5ObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "::tls::sha1", SHA1ObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "::tls::sha256", SHA256ObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "::tls::sha512", SHA512ObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
Tcl_CreateObjCommand(interp, "::tls::unstack", DigestUnstackObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
return TCL_OK;
}
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