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Comment:Moved common get cipher, digest, etc. functions to tlsUtil.c file. Renamed tlsKey.c to tlsKDF.c to better reflect contents. Standardized error messages.
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SHA3-256: 94f8408d0d20d0089c7a6f8a5bbd6280422e37285c33e6a3f66f10627dfd8482
User & Date: bohagan on 2023-12-24 22:57:35
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Context
2023-12-25
02:04
Added KDF test cases check-in: 4cc32676a2 user: bohagan tags: crypto
2023-12-24
22:57
Moved common get cipher, digest, etc. functions to tlsUtil.c file. Renamed tlsKey.c to tlsKDF.c to better reflect contents. Standardized error messages. check-in: 94f8408d0d user: bohagan tags: crypto
06:36
Added MAC test vectors. Added all.tcl files to each test subdirectory so all tests run. Updated Hash and KDF test vectors to add missing cleanupTests. Corrected bug with using dash in constraints. Added constraints for ciphers, digests, and kdfs. check-in: feef0d0cef user: bohagan tags: crypto
Changes
Unified Diff Ignore Whitespace Patch
Modified configure from [39b72b8793] to [5d330fed91].
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# stub library C source files to compile in TEA_ADD_STUB_SOURCES,
# and runtime Tcl library files in TEA_ADD_TCL_SOURCES.
# This defines PKG(_STUB)_SOURCES, PKG(_STUB)_OBJECTS, PKG_HEADERS
# and PKG_TCL_SOURCES.
#-----------------------------------------------------------------------


    vars="tls.c tlsBIO.c tlsDigest.c tlsEncrypt.c tlsInfo.c tlsIO.c tlsKey.c tlsX509.c"
    for i in $vars; do
	case $i in
	    \$*)
		# allow $-var names
		PKG_SOURCES="$PKG_SOURCES $i"
		PKG_OBJECTS="$PKG_OBJECTS $i"
		;;








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# stub library C source files to compile in TEA_ADD_STUB_SOURCES,
# and runtime Tcl library files in TEA_ADD_TCL_SOURCES.
# This defines PKG(_STUB)_SOURCES, PKG(_STUB)_OBJECTS, PKG_HEADERS
# and PKG_TCL_SOURCES.
#-----------------------------------------------------------------------


    vars="tls.c tlsBIO.c tlsDigest.c tlsEncrypt.c tlsInfo.c tlsIO.c tlsKDF.c tlsUtil.c tlsX509.c"
    for i in $vars; do
	case $i in
	    \$*)
		# allow $-var names
		PKG_SOURCES="$PKG_SOURCES $i"
		PKG_OBJECTS="$PKG_OBJECTS $i"
		;;
︙︙
Modified configure.ac from [c43a3df459] to [f02a7eeac0].
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# public headers that need to be installed in TEA_ADD_HEADERS,
# stub library C source files to compile in TEA_ADD_STUB_SOURCES,
# and runtime Tcl library files in TEA_ADD_TCL_SOURCES.
# This defines PKG(_STUB)_SOURCES, PKG(_STUB)_OBJECTS, PKG_HEADERS
# and PKG_TCL_SOURCES.
#-----------------------------------------------------------------------

TEA_ADD_SOURCES([tls.c tlsBIO.c tlsDigest.c tlsEncrypt.c tlsInfo.c tlsIO.c tlsKey.c tlsX509.c])
TEA_ADD_HEADERS([generic/tls.h])
TEA_ADD_INCLUDES([])
TEA_ADD_LIBS([])
TEA_ADD_CFLAGS([])
TEA_ADD_STUB_SOURCES([])
TEA_ADD_TCL_SOURCES([library/tls.tcl])









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# public headers that need to be installed in TEA_ADD_HEADERS,
# stub library C source files to compile in TEA_ADD_STUB_SOURCES,
# and runtime Tcl library files in TEA_ADD_TCL_SOURCES.
# This defines PKG(_STUB)_SOURCES, PKG(_STUB)_OBJECTS, PKG_HEADERS
# and PKG_TCL_SOURCES.
#-----------------------------------------------------------------------

TEA_ADD_SOURCES([tls.c tlsBIO.c tlsDigest.c tlsEncrypt.c tlsInfo.c tlsIO.c tlsKDF.c tlsUtil.c tlsX509.c])
TEA_ADD_HEADERS([generic/tls.h])
TEA_ADD_INCLUDES([])
TEA_ADD_LIBS([])
TEA_ADD_CFLAGS([])
TEA_ADD_STUB_SOURCES([])
TEA_ADD_TCL_SOURCES([library/tls.tcl])
︙︙
Modified generic/tlsDigest.c from [10998241d5] to [f2bddde2af].
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 * Side effects:
 *	No result or error message
 *
 *-------------------------------------------------------------------
 */
int DigestInitialize(Tcl_Interp *interp, DigestState *statePtr, Tcl_Obj *digestObj,
	Tcl_Obj *cipherObj, Tcl_Obj *keyObj, Tcl_Obj *macObj) {
    int key_len = 0, type = statePtr->format & 0xFF0;
    const char *digestName = NULL, *cipherName = NULL, *macName = NULL;
    const EVP_MD *md = NULL;
    const EVP_CIPHER *cipher = NULL;
    const unsigned char *key = NULL;


    dprintf("Called");



















    /* Create contexts */
    switch(type) {
    case TYPE_MD:
	statePtr->ctx = EVP_MD_CTX_new();
	res = (statePtr->ctx != NULL);
	break;








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 * Side effects:
 *	No result or error message
 *
 *-------------------------------------------------------------------
 */
int DigestInitialize(Tcl_Interp *interp, DigestState *statePtr, Tcl_Obj *digestObj,
	Tcl_Obj *cipherObj, Tcl_Obj *keyObj, Tcl_Obj *macObj) {
    int res = 0, type = statePtr->format & 0xFF0;

    const EVP_MD *md = NULL;
    const EVP_CIPHER *cipher = NULL;
    const void *key = NULL, *iv = NULL, *salt = NULL;
    int key_len = 0;

    dprintf("Called");

    /* Get digest */
    md = Util_GetDigest(interp, digestObj, type != TYPE_CMAC);
    if (md == NULL && type != TYPE_CMAC) {
	return TCL_ERROR;
    }

    /* Get cipher */
    cipher = Util_GetCipher(interp, cipherObj, type == TYPE_CMAC);
    if (cipher == NULL && type == TYPE_CMAC) {
	return TCL_ERROR;
    }

    /* Get key */
    key = (const void *) Util_GetKey(interp, keyObj, &key_len, "key", 0, type != TYPE_MD);
    if (key == NULL && type != TYPE_MD) {
	return TCL_ERROR;
    }

    /* Create contexts */
    switch(type) {
    case TYPE_MD:
	statePtr->ctx = EVP_MD_CTX_new();
	res = (statePtr->ctx != NULL);
	break;
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    }

    if (!res) {
	Tcl_AppendResult(interp, "Create context failed", NULL);
	return TCL_ERROR;
    }

    /* Get MAC */
    if (macObj != NULL) {
	macName = Tcl_GetStringFromObj(macObj, NULL);
	if (strcmp(macName, "cmac") == 0) {
	    type = TYPE_CMAC;
	} else if (strcmp(macName, "hmac") == 0) {
	    type = TYPE_HMAC;
	} else {
	    Tcl_AppendResult(interp, "Invalid MAC \"", macName, "\"", NULL);
	    return TCL_ERROR;
	}
    } else if (type == TYPE_MAC) {
	Tcl_AppendResult(interp, "No MAC specified", NULL);
	return TCL_ERROR;
    }

    /* Get digest */
    if (digestObj != NULL) {
	digestName = Tcl_GetStringFromObj(digestObj, NULL);
	md = EVP_get_digestbyname(digestName);
	if (md == NULL) {
	    Tcl_AppendResult(interp, "Invalid digest \"", digestName, "\"", NULL);
	    return TCL_ERROR;
	} else if (md == EVP_shake128() || md == EVP_shake256()) {
	    statePtr->format |= IS_XOF;
	}
    } else if (type != TYPE_CMAC) {
	Tcl_AppendResult(interp, "No digest specified", NULL);
	return TCL_ERROR;
    }

    /* Get cipher */
    if (cipherObj != NULL) {
	cipherName = Tcl_GetStringFromObj(cipherObj, NULL);
	cipher = EVP_get_cipherbyname(cipherName);
	if (cipher == NULL) {
	    Tcl_AppendResult(interp, "Invalid cipher \"", cipherName, "\"", NULL);
	    return TCL_ERROR;
	}
    } else if (type == TYPE_CMAC) {
	Tcl_AppendResult(interp, "No cipher specified", NULL);
	return TCL_ERROR;
    }

    /* Get key */
    if (keyObj != NULL) {
	key = Tcl_GetByteArrayFromObj(keyObj, &key_len);
    } else if (type != TYPE_MD) {
	Tcl_AppendResult(interp, "No key specified", NULL);
	return TCL_ERROR;
    }

    /* Initialize cryptography function */
    switch(type) {
    case TYPE_MD:
	res = EVP_DigestInit_ex(statePtr->ctx, md, NULL);
	break;
    case TYPE_HMAC:
	res = HMAC_Init_ex(statePtr->hctx, (const void *) key, key_len, md, NULL);
	break;
    case TYPE_CMAC:
	res = CMAC_Init(statePtr->cctx, (const void *) key, key_len, cipher, NULL);
	break;
    }

    if (!res) {
	Tcl_AppendResult(interp, "Initialize failed: ", REASON(), NULL);
	return TCL_ERROR;
    }








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    }

    if (!res) {
	Tcl_AppendResult(interp, "Create context failed", NULL);
	return TCL_ERROR;
    }





















































    /* Initialize cryptography 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, key_len, md, NULL);
	break;
    case TYPE_CMAC:
	res = CMAC_Init(statePtr->cctx, key, key_len, cipher, NULL);
	break;
    }

    if (!res) {
	Tcl_AppendResult(interp, "Initialize failed: ", REASON(), NULL);
	return TCL_ERROR;
    }
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	if (macObj != NULL) {
	    char *macName = Tcl_GetStringFromObj(macObj, NULL);
	    if (strcmp(macName,"cmac") == 0) {
		type = TYPE_CMAC;
	    } else if (strcmp(macName,"hmac") == 0) {
		type = TYPE_HMAC;
	    } else {
		Tcl_AppendResult(interp, "Invalid MAC \"", macName, "\"", NULL);
		return TCL_ERROR;
	    }
	} else {
	    Tcl_AppendResult(interp, "No MAC specified", 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);
    } else if (channel != NULL) {
	res = DigestChannelHandler(interp, channel, digestObj, cipherObj, format | type, keyObj, macObj);
    } else if (cmdObj != NULL) {
	res = DigestCommandHandler(interp, cmdObj, digestObj, cipherObj, format | type, keyObj, macObj);
    } else if (dataObj != NULL) {
	res = DigestDataHandler(interp, dataObj, digestObj, cipherObj, format | type, keyObj, macObj);
    } else {
	Tcl_AppendResult(interp, "No operation specified: Use -channel, -command, -data, or -file option", NULL);
	res = TCL_ERROR;
    }
    return res;
}

/*
 *-------------------------------------------------------------------








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	if (macObj != NULL) {
	    char *macName = Tcl_GetStringFromObj(macObj, NULL);
	    if (strcmp(macName,"cmac") == 0) {
		type = TYPE_CMAC;
	    } else if (strcmp(macName,"hmac") == 0) {
		type = TYPE_HMAC;
	    } else {
		Tcl_AppendResult(interp, "invalid MAC \"", macName, "\"", NULL);
		return TCL_ERROR;
	    }
	} else {
	    Tcl_AppendResult(interp, "no MAC", 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);
    } else if (channel != NULL) {
	res = DigestChannelHandler(interp, channel, digestObj, cipherObj, format | type, keyObj, macObj);
    } else if (cmdObj != NULL) {
	res = DigestCommandHandler(interp, cmdObj, digestObj, cipherObj, format | type, keyObj, macObj);
    } else if (dataObj != NULL) {
	res = DigestDataHandler(interp, dataObj, digestObj, cipherObj, format | type, keyObj, macObj);
    } else {
	Tcl_AppendResult(interp, "No operation: Use -channel, -command, -data, or -file option", NULL);
	res = TCL_ERROR;
    }
    return res;
}

/*
 *-------------------------------------------------------------------
︙︙
Modified generic/tlsEncrypt.c from [5bdc760fa1] to [f6412740bf].
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 *	No result or error message
 *
 *-------------------------------------------------------------------
 */
int EncryptInitialize(Tcl_Interp *interp, int type, EVP_CIPHER_CTX **ctx,
	Tcl_Obj *cipherObj, Tcl_Obj *keyObj, Tcl_Obj *ivObj) {
    const EVP_CIPHER *cipher;
    char *cipherName =  NULL, *keyString = NULL, *ivString = NULL;
    int cipher_len = 0, key_len = 0, iv_len = 0, res, max;
    unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];

    dprintf("Called");

    /* Init buffers */
    memset(key, 0, EVP_MAX_KEY_LENGTH);
    memset(iv, 0, EVP_MAX_IV_LENGTH);

    /* Get encryption parameters */
    if (cipherObj != NULL) {
	cipherName = Tcl_GetStringFromObj(cipherObj, &cipher_len);
    }
    if (keyObj != NULL) {
	keyString = Tcl_GetByteArrayFromObj(keyObj, &key_len);
    }
    if (ivObj != NULL) {
	ivString = Tcl_GetByteArrayFromObj(ivObj, &iv_len);
    }

    /* Get cipher name */
#if OPENSSL_VERSION_NUMBER < 0x30000000L
    cipher = EVP_get_cipherbyname(cipherName);
#else
    cipher = EVP_CIPHER_fetch(NULL, cipherName, NULL);
#endif
    if (cipher == NULL) {
	Tcl_AppendResult(interp, "Invalid cipher: \"", cipherName, "\"", NULL);
	return TCL_ERROR;
    }


    if (key_len > 0) {
#if OPENSSL_VERSION_NUMBER < 0x30000000L
	max = EVP_CIPHER_key_length(cipher);
#else
	max = EVP_CIPHER_get_key_length(cipher);
#endif
	if (max == 0) {
	} else if (key_len <= max) {
	    memcpy((void *) key, (const void *) keyString, (size_t) key_len);
	} else {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf("Key too long. Must be <= %d bytes", max));
	    return TCL_ERROR;
	}
    }

    if (iv_len > 0) {
#if OPENSSL_VERSION_NUMBER < 0x30000000L
	max = EVP_CIPHER_iv_length(cipher);
#else
	max = EVP_CIPHER_get_iv_length(cipher);
#endif
	if (max == 0) {

	} else if (iv_len <= max) {
	    memcpy((void *) iv, (const void *) ivString, (size_t) iv_len);
	} else {
	    Tcl_SetObjResult(interp, Tcl_ObjPrintf("IV too long. Must be <= %d bytes", max));
	    return TCL_ERROR;
	}
    }

    /* Create and initialize the context */
    if((*ctx = EVP_CIPHER_CTX_new()) == NULL) {
	Tcl_AppendResult(interp, "Memory allocation error", (char *) NULL);
	return TCL_ERROR;
    }

    /* Initialize the operation. Need appropriate key and iv size. */
#if OPENSSL_VERSION_NUMBER < 0x30000000L
    if (type == TYPE_ENCRYPT) {
	res = EVP_EncryptInit_ex(*ctx, cipher, NULL, key, iv);
    } else {
	res = EVP_DecryptInit_ex(*ctx, cipher, NULL, key, iv);
    }
#else
	OSSL_PARAM params[2];
	int index = 0;

	if (iv != NULL) {
	    params[index++] = OSSL_PARAM_construct_octet_string(OSSL_CIPHER_PARAM_IV, (void *) iv, (size_t) iv_len);
	}
	params[index] = OSSL_PARAM_construct_end();

    if (type == TYPE_ENCRYPT) {
	res = EVP_EncryptInit_ex2(ctx, cipher, key, iv, params);
    } else {
	res = EVP_DecryptInit_ex2(ctx, cipher, key, iv, params);
    }
#endif

    if(!res) {
	Tcl_AppendResult(interp, "Initialize failed: ", REASON(), NULL);
	return TCL_ERROR;
    }




    return TCL_OK;
}

/*
 *-------------------------------------------------------------------
 *
 * EncryptUpdate --








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 *	No result or error message
 *
 *-------------------------------------------------------------------
 */
int EncryptInitialize(Tcl_Interp *interp, int type, EVP_CIPHER_CTX **ctx,
	Tcl_Obj *cipherObj, Tcl_Obj *keyObj, Tcl_Obj *ivObj) {
    const EVP_CIPHER *cipher;
    char *keyString = NULL, *ivString = NULL;
    int cipher_len = 0, key_len = 0, iv_len = 0, res, max;
    unsigned char key[EVP_MAX_KEY_LENGTH], iv[EVP_MAX_IV_LENGTH];

    dprintf("Called");

    /* Init buffers */
    memset(key, 0, EVP_MAX_KEY_LENGTH);
    memset(iv, 0, EVP_MAX_IV_LENGTH);












    /* Get cipher */

    cipher = Util_GetCipher(interp, cipherObj, 1);



    if (cipher == NULL) {

	return TCL_ERROR;
    }

    /*  Get key - Only support internally defined cipher lengths.
	Custom ciphers can be up to size_t bytes. */

    max = EVP_CIPHER_key_length(cipher);

    keyString = (const void *) Util_GetKey(interp, keyObj, &key_len, "key", max, FALSE);


    if (keyString != NULL) {
	memcpy((void *) key, (const void *) keyString, (size_t) key_len);
    } else if (keyObj != NULL)  {

	return TCL_ERROR;
    }

    /*  Get IV */


    max = EVP_CIPHER_iv_length(cipher);




    ivString = (const void *) Util_GetIV(interp, ivObj, &iv_len, max, FALSE);
    if (ivString != NULL) {
	memcpy((void *) iv, (const void *) ivString, (size_t) iv_len);
    } else if (ivObj != NULL) {

	return TCL_ERROR;
    }


    /* Create context */
    if((*ctx = EVP_CIPHER_CTX_new()) == NULL) {
	Tcl_AppendResult(interp, "Memory allocation error", (char *) NULL);
	return TCL_ERROR;
    }

    /* Initialize the operation. Need appropriate key and iv size. */

    if (type == TYPE_ENCRYPT) {
	res = EVP_EncryptInit_ex(*ctx, cipher, NULL, key, iv);
    } else {
	res = EVP_DecryptInit_ex(*ctx, cipher, NULL, key, iv);
    }
















    if(!res) {
	Tcl_AppendResult(interp, "Initialize failed: ", REASON(), NULL);
	return TCL_ERROR;
    }

    /* Erase buffers */
    memset(key, 0, EVP_MAX_KEY_LENGTH);
    memset(iv, 0, EVP_MAX_IV_LENGTH);
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------
 *
 * EncryptUpdate --
︙︙
Modified generic/tlsInt.h from [0f4281d913] to [8236808b5c].
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int             Tls_WaitForConnect(State *statePtr, int *errorCodePtr, int handshakeFailureIsPermanent);
int             Tls_DigestCommands(Tcl_Interp *interp);
int             Tls_EncryptCommands(Tcl_Interp *interp);
int             Tls_InfoCommands(Tcl_Interp *interp);
int             Tls_KeyCommands(Tcl_Interp *interp);

BIO             *BIO_new_tcl(State* statePtr, int flags);











#define PTR2INT(x) ((int) ((intptr_t) (x)))

#endif /* _TLSINT_H */








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int             Tls_WaitForConnect(State *statePtr, int *errorCodePtr, int handshakeFailureIsPermanent);
int             Tls_DigestCommands(Tcl_Interp *interp);
int             Tls_EncryptCommands(Tcl_Interp *interp);
int             Tls_InfoCommands(Tcl_Interp *interp);
int             Tls_KeyCommands(Tcl_Interp *interp);

BIO             *BIO_new_tcl(State* statePtr, int flags);

EVP_CIPHER	*Util_GetCipher(Tcl_Interp *interp, Tcl_Obj *cipherObj, int no_null);
EVP_MD		*Util_GetDigest(Tcl_Interp *interp, Tcl_Obj *digestObj, int no_null);
unsigned char	*Util_GetIV(Tcl_Interp *interp, Tcl_Obj *ivObj, int *len, int max, int no_null);
unsigned char	*Util_GetKey(Tcl_Interp *interp, Tcl_Obj *keyObj, int *len, char *name, int max, int no_null);
unsigned char	*Util_GetSalt(Tcl_Interp *interp, Tcl_Obj *saltObj, int *len, int max, int no_null);
int		Util_GetInt(Tcl_Interp *interp, Tcl_Obj *dataObj, int *value, char *name, int min, int max);
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
EVP_MAC		*Util_GetMAC(Tcl_Interp *interp, Tcl_Obj *MacObj, int no_null);
#endif

#define PTR2INT(x) ((int) ((intptr_t) (x)))

#endif /* _TLSINT_H */
Added generic/tlsKDF.c version [2e942636f4].
Deleted generic/tlsKey.c version [9456e8167e].
Added generic/tlsUtil.c version [8f89b37f61].
Modified win/makefile.vc from [ac05bd257a] to [40a127f356].
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# defined by rules for object files.
PRJ_OBJS = $(TMP_DIR)\tls.obj \
	$(TMP_DIR)\tlsBIO.obj \
	$(TMP_DIR)\tlsDigest.obj \
	$(TMP_DIR)\tlsEncrypt.obj \
	$(TMP_DIR)\tlsInfo.obj \
	$(TMP_DIR)\tlsIO.obj \
	$(TMP_DIR)\tlsKey.obj \

	$(TMP_DIR)\tlsX509.obj

# Define any additional project include flags
# SSL_INSTALL_FOLDER = with the OpenSSL installation folder following.
PRJ_INCLUDES = -I"$(SSL_INSTALL_FOLDER)\include" -I"$(OPENSSL_INSTALL_DIR)\include"

# Define any additional compiler flags that might be required for the project








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# defined by rules for object files.
PRJ_OBJS = $(TMP_DIR)\tls.obj \
	$(TMP_DIR)\tlsBIO.obj \
	$(TMP_DIR)\tlsDigest.obj \
	$(TMP_DIR)\tlsEncrypt.obj \
	$(TMP_DIR)\tlsInfo.obj \
	$(TMP_DIR)\tlsIO.obj \
	$(TMP_DIR)\tlsKDF.obj \
	$(TMP_DIR)\tlsUtil.obj \
	$(TMP_DIR)\tlsX509.obj

# Define any additional project include flags
# SSL_INSTALL_FOLDER = with the OpenSSL installation folder following.
PRJ_INCLUDES = -I"$(SSL_INSTALL_FOLDER)\include" -I"$(OPENSSL_INSTALL_DIR)\include"

# Define any additional compiler flags that might be required for the project
︙︙
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