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Comment:Added get digest info command to return properties of a digest
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SHA3-256: e47bd35656a2b193910b4d3998585a3224559bab1ecbb2707960bb4774208a57
User & Date: bohagan on 2023-11-18 18:55:03
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Context
2023-11-19
02:55
Added get cipher info command to return properties of a cipher check-in: 35832d0765 user: bohagan tags: crypto
2023-11-18
18:55
Added get digest info command to return properties of a digest check-in: e47bd35656 user: bohagan tags: crypto
06:58
Updated documentation for digest, cmac, and hmac command changes. check-in: 220a9947b7 user: bohagan tags: crypto
Changes
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Modified doc/tls.html from [939cd85094] to [268ee1f2cf].

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	    <dd><b>tls::handshake</b> <em> channel</em></dd>
	    <dd><b>tls::status </b> <em>?-local? channel</em></dd>
	    <dd><b>tls::connection </b> <em>channel</em></dd>
	    <dd><b>tls::import</b> <em>channel ?options?</em></dd>
	    <dd><b>tls::unimport</b> <em>channel</em></dd>
	    <dt>&nbsp;</dt>
	    <dd><b>tls::ciphers</b> <em>?protocol? ?verbose? ?supported?</em></dd>
	    <dd><b>tls::digests</b></dd>
	    <dd><b>tls::digests</b> <em>?name?</em></dd>
	    <dd><b>tls::macs</b></dd>
	    <dd><b>tls::protocols</b></dd>
	    <dd><b>tls::version</b></dd>
	    <dt>&nbsp;</dt>
	    <dd><b>tls::digest</b> <b>-digest</b> <em>name ?options?</em></dd>
	    <dd><b>tls::cmac</b> <b>-cipher</b> <em>name</em> <b>-key</b> <em>key ?options?</em></dd>
	    <dd><b>tls::hmac</b> <b>-digest</b> <em>name</em> <b>-key</b> <em>key ?options?</em></dd>
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<a href="#tls::status"><b>tls::status</b> <i>?-local? channel</i></a><br>
<a href="#tls::connection"><b>tls::connection</b> <i>channel</i></a><br>
<a href="#tls::handshake"><b>tls::handshake</b> <i>channel</i></a><br>
<a href="#tls::import"><b>tls::import</b> <i>channel ?options?</i></a><br>
<a href="#tls::unimport"><b>tls::unimport</b> <i>channel</i></a><br>
<br>
<a href="#tls::ciphers"><b>tls::ciphers</b> <i>?protocol? ?verbose? ?supported?</i></a><br>
<a href="#tls::digests"><b>tls::digests</b></a><br>
<a href="#tls::digests"><b>tls::digests</b> <i>?name?</i></a><br>
<a href="#tls::macs"><b>tls::macs</b></a><br>
<a href="#tls::protocols"><b>tls::protocols</b></a><br>
<a href="#tls::version"><b>tls::version</b></a><br>
<br>
<a href="#tls::digest"><b>tls::digest</b> <b>-digest</b> <i>name ?options?</i></a><br>
<a href="#tls::cmac"><b>tls::cmac</b> <b>-cipher</b> <i>name</i> <b>-key</b> <i>key ?options?</i></a><br>
<a href="#tls::hmac"><b>tls::hmac</b> <b>-digest</b> <i>name</i> <b>-key</b> <i>key ?options?</i></a><br>
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	only the ciphers supported for that protocol are returned. See
	<b>tls::protocols</b> command for the supported protocols. If
	<em>verbose</em> is specified as true then a verbose, human readable
	list is returned with additional information on the cipher. If
	<em>supported</em> is specified as true, then only the ciphers
	supported for protocol will be listed.</dd>

    <dt><a name="tls::digests"><strong>tls::digests</strong></a></dt>
    <dd>Returns a list of the hash algorithms for <b>tls::digest</b> command.</dd>
    <dt><a name="tls::digests"><strong>tls::digests</strong> <em>?name?</em></a></dt>
    <dd>Without <em>name</em>, returns a list of the supported hash algorithms
	for <b>tls::digest</b> command. With <em>name</em>, returns a list of
	property names and values describing digest <i>name</i>. Properties
	include name, description, size, block_size, type, and flags list.</dd>

    <dt><a name="tls::macs"><strong>tls::macs</strong></a></dt>
    <dd>Returns a list of the available Message Authentication Codes (MAC) for
	the <b>tls::digest</b> command.</dd>

    <dt><a name="tls::protocols"><strong>tls::protocols</strong></a></dt>
    <dd>Returns a list of supported protocols. Valid values are:
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Modified generic/tlsInfo.c from [bed510f6e3] to [f456ff7952].

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    return TCL_OK;
	clientData = clientData;
}

/*
 *-------------------------------------------------------------------
 *
 * DigestInfo --
 *
 *	Return a list of properties and values for digestName.
 *
 * Results:
 *	A standard Tcl list.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------
 */
int DigestInfo(Tcl_Interp *interp, char *digestName) {
    Tcl_Obj *objPtr, *listPtr;
    EVP_MD *md = EVP_get_digestbyname(digestName);
    unsigned long flags;

    if (md == NULL) {
	Tcl_AppendResult(interp, "Invalid digest \"", digestName, "\"", NULL);
	return TCL_ERROR;
    }

    /* Get properties */
    objPtr = Tcl_NewListObj(0, NULL);
    LAPPEND_STR(interp, objPtr, "name", EVP_MD_name(md), -1);
    LAPPEND_STR(interp, objPtr, "description", "", -1);
    LAPPEND_INT(interp, objPtr, "size", EVP_MD_size(md));
    LAPPEND_INT(interp, objPtr, "block_size", EVP_MD_block_size(md));
    LAPPEND_STR(interp, objPtr, "provider", "", -1);
    LAPPEND_STR(interp, objPtr, "type", OBJ_nid2ln(EVP_MD_type(md)), -1);
    LAPPEND_STR(interp, objPtr, "pkey_type", OBJ_nid2ln(EVP_MD_pkey_type(md)), -1);
    flags = EVP_MD_flags(md);

    /* Flags */
    listPtr = Tcl_NewListObj(0, NULL);
    LAPPEND_BOOL(interp, listPtr, "One-shot", flags & EVP_MD_FLAG_ONESHOT);
    LAPPEND_BOOL(interp, listPtr, "XOF", flags & EVP_MD_FLAG_XOF);
    LAPPEND_BOOL(interp, listPtr, "DigestAlgorithmId_NULL", flags & EVP_MD_FLAG_DIGALGID_NULL);
    LAPPEND_BOOL(interp, listPtr, "DigestAlgorithmId_Abscent", flags & EVP_MD_FLAG_DIGALGID_ABSENT);
    LAPPEND_BOOL(interp, listPtr, "DigestAlgorithmId_Custom", flags & EVP_MD_FLAG_DIGALGID_CUSTOM);
    LAPPEND_BOOL(interp, listPtr, "FIPS", flags & EVP_MD_FLAG_FIPS);
    LAPPEND_OBJ(interp, objPtr, "flags", listPtr);

    Tcl_SetObjResult(interp, objPtr);
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------
 *
 * DigestsObjCmd --
 *
 *	Return a list of all valid hash algorithms or message digests.
 *
 * Results:
 *	A standard Tcl list.
 *
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    dprintf("Called");

#if OPENSSL_VERSION_NUMBER < 0x10100000L
    OpenSSL_add_all_digests(); /* Make sure they're loaded */
#endif

    /* Validate arg count */
    if (objc != 1) {
	Tcl_WrongNumArgs(interp, 1, objv, NULL);
    if (objc == 2) {
	char *digestName = Tcl_GetStringFromObj(objv[1],NULL);
	return DigestInfo(interp, digestName);
    } else if (objc > 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "?name?");
	return TCL_ERROR;
    }

    /* List all digests */
    objPtr = Tcl_NewListObj(0, NULL);
    OBJ_NAME_do_all(OBJ_NAME_TYPE_MD_METH, NamesCallback, (void *) objPtr);
    Tcl_SetObjResult(interp, objPtr);
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