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Comment:Added provider command to load non-default providers in OpenSSL 3.0
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SHA3-256: b6001442d135cf12fde2acbd2332a5e39931e9f0453f7310fb738b701b428237
User & Date: bohagan on 2024-02-05 01:37:05
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Context
2024-02-06
02:42
Added provider test cases check-in: 5a41ff9aa1 user: bohagan tags: crypto
2024-02-05
01:37
Added provider command to load non-default providers in OpenSSL 3.0 check-in: b6001442d1 user: bohagan tags: crypto
2024-02-04
23:25
Code updates for gcc warnings check-in: e58f2c78c8 user: bohagan tags: crypto
Changes
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Modified doc/cryptography.html from [b81dbf8537] to [c0f7bb9ac4].

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	    <dd><b>tls::digests</b> <em>?name?</em></dd>
	    <dd><b>tls::kdfs</b></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::cmac</b> <b>-cipher</b> <em>name</em> <b>-key</b> <em>key ?options?</em></dd>
	    <dd><b>tls::digest</b> <b>-digest</b> <em>name ?options?</em></dd>
	    <dd><b>tls::hash</b> <b>-digest</b> <em>name ?options?</em></dd>
	    <dd><b>tls::hmac</b> <b>-digest</b> <em>name</em> <b>-key</b> <em>key ?options?</em></dd>
	    <dd><b>tls::md</b> <b>-digest</b> <em>name ?options?</em></dd>
	    <dd><b>tls::md4</b> <em>data</em></dd>
	    <dd><b>tls::md5</b> <em>data</em></dd>
	    <dd><b>tls::sha1</b> <em>data</em></dd>
	    <dd><b>tls::sha256</b> <em>data</em></dd>
	    <dd><b>tls::sha512</b> <em>data</em></dd>
	    <dd><b>tls::unstack</b> <em>channelId</em></dd>
	    <dt>&nbsp;</dt>
	    <dd><b>tls::encrypt</b> <b>-cipher</b> <em>name</em> <b>-key</b> <em>key ?options?</em></dd>
	    <dd><b>tls::decrypt</b> <b>-cipher</b> <em>name</em> <b>-key</b> <em>key ?options?</em></dd>
	    <dt>&nbsp;</dt>
	    <dd><b>tls::hkdf -digest</b> <em>digest</em> <b>-key</b> <em>key ?options?</em></dd>
	    <dd><b>tls::pbkdf2 -size</b> <em>length</em> <b>-digest</b> <em>digest ?options?</em></dd>
	    <dd><b>tls::scrypt -password</b> <em>string</em> <b>-salt</b> <em>string ?options?</em></dd>
	    <dt>&nbsp;</dt>
	    <dd><b>tls::random</b> <em>?</em><b>-private</b><em>? length</em></dd>
	    <dt>&nbsp;</dt>
	    <dd><b>tls::provider</b> <em>name</em></dd>
	</dl>
    </dd>
    <dd><a href="#OPTIONS">OPTIONS</a></dd>
    <dd><a href="#COMMANDS">COMMANDS</a></dd>
    <dd><a href="#GLOSSARY">GLOSSARY</a> </dd>
    <dd><a href="#EXAMPLES">EXAMPLES</a></dd>
    <dd><a href="#SPECIAL">SPECIAL CONSIDERATIONS</a></dd>
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<a href="#tls::digests"><b>tls::digests</b> <i>?name?</i></a><br>
<a href="#tls::kdfs"><b>tls::kdfs</b></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::cmac"><b>tls::cmac</b> <b>-cipher</b> <i>name</i> <b>-key</b> <i>key ?options?</i></a><br>
<a href="#tls::digest"><b>tls::digest</b> <b>-digest</b> <i>name ?options?</i></a><br>
<a href="#tls::hash"><b>tls::hash</b> <b>-digest</b> <i>name ?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>
<a href="#tls::md"><b>tls::md</b> <b>-digest</b> <i>name ?options?</i></a><br>
<a href="#tls::md4"><b>tls::md4</b> <i>data</i></a><br>
<a href="#tls::md5"><b>tls::md5</b> <i>data</i></a><br>
<a href="#tls::sha1"><b>tls::sha1</b> <i>data</i></a><br>
<a href="#tls::sha256"><b>tls::sha256</b> <i>data</i></a><br>
<a href="#tls::sha512"><b>tls::sha512</b> <i>data</i></a><br>
<a href="#tls::unstack"><b>tls::unstack</b> <i>channelId</i></a><br>
<br>
<a href="#tls::encrypt"><b>tls::encrypt</b> <b>-cipher</b> <i>name</i> <b>-key</b> <i>key ?options?</i></a><br>
<a href="#tls::decrypt"><b>tls::decrypt</b> <b>-cipher</b> <i>name</i> <b>-key</b> <i>key ?options?</i></a><br>
<br>
<a href="#tls::hkdf"><b>tls::hkdf -digest</b> <i>digest</i> <b>-key</b> <i>key ?options?</i></a><br>
<a href="#tls::pbkdf2"><b>tls::pbkdf2 -size</b> <i>length</i> <b>-digest</b> <i>digest ?options?</i></a><br>
<a href="#tls::scrypt"><b>tls::scrypt -password</b> <i>string</i> <b>-salt</b> <i>string ?options?</i></a><br>
<br>
<a href="#tls::random"><b>tls::random</b> <i>?</i><b>-private</b><i>? length</i></a><br>
<br>
<a href="#tls::provider"><b>tls::provider</b> <i>name</i></a><br>

</p>

<br>
<h3><a name="OPTIONS">OPTIONS</a></h3>

<p>The following options are used by the cryptography commands.</p>
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	<em>?[</em><b>-chan</b> <em>channelId |</em> <b>-command</b> <em>cmdName |</em>
	<b>-file</b> <em>filename | ?</em><b>-data</b><em>? data]</em></a></dt>
    <dd>Calculate the Cipher-based Message Authentication Code (CMAC) where
	<em>key</em> is a shared key and output the result per the I/O options
	in the specified format. MACs are used to ensure authenticity and the
	integrity of data. See <a href="#OPTIONS"><b>options</b></a> for usage
	info. Option <b>-key</b> is only used for some ciphers.</dd>

    <dt><a name="tls::digest"><strong>tls::digest</strong>
	<em>option value ...</em></a></dt>
    <dd>Alias for <b>tls::md</b>.</dd>

    <dt><a name="tls::hash"><strong>tls::hash</strong>
	<em>option value ...</em></a></dt>
    <dd>Alias for <b>tls::md</b>.</dd>

    <dt><a name="tls::hmac"><strong>tls::hmac</strong>
	<em>?</em><b>-digest</b><em>? name</em>
	<b>-key</b> <em>key ?</em>
	<b>-bin</b>|<b>-hex</b>
	<em>?[</em><b>-chan</b> <em>channelId |</em> <b>-command</b> <em>cmdName |</em>
	<b>-file</b> <em>filename | ?</em><b>-data</b><em>? data]</em></a></dt>
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	<em>?</em><b>-private</b><em>? length</em></a></dt>
    <dd>Generate <i>length</i> random bytes using a cryptographically secure
	pseudo random generator (CSPRNG). OpenSSL uses a security level of 256
	bits. Will return an error if a trusted entropy source such as the OS
	isn't available. Use <b>-private</b> option if the values are intended
	to remain private in case the public PRNG is compromised.</dd>

<br>

<h4><a name="PROVIDER">Load Provider</a></h4>
These commands provide access to the OpenSSL providers.
<br>
<br>
    <dt><a name="tls::provider"><strong>tls::provider</strong>
	<em>name</em></a></dt>
    <dd>Load <i>name</i> default provider. Valid provider names are:
    <b>default</b>, <b>base</b>, <b>fips</b>, and <b>legacy</b>. Use
    <b>legacy</b> to load the legacy provider ciphers, digests, etc.</dd>

</dl>

<br>
<h3><a name="GLOSSARY">GLOSSARY</a></h3>

<p>The following is a list of the terminology used in this package along with
brief definitions. For more details, please consult with the OpenSSL documentation.</p>
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Modified generic/tlsInfo.c from [981453e7ce] to [d866fb1c06]. 

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/*
 * Information Commands Module
 *
 * Provides commands that return info related to the OpenSSL config and data.
 *
 * Copyright (C) 2023 Brian O'Hagan
 *
 */

#include "tlsInt.h"
#include <openssl/crypto.h>
#include <openssl/ssl.h>
#include <openssl/safestack.h>
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
#include <openssl/provider.h>
#endif

/*
 * Valid SSL and TLS Protocol Versions
 */
static const char *protocols[] = {
	"ssl2", "ssl3", "tls1", "tls1.1", "tls1.2", "tls1.3", NULL
};
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}

/*******************************************************************/

/*
 *-------------------------------------------------------------------
 *
 * ProviderObjCmd --
 *
 *	Load a provider.
 *
 * Results:
 *	A standard Tcl result.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------
 */
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
static int
ProviderObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    char *name;
    (void) clientData;

    dprintf("Called");

    /* Validate arg count */
    if (objc != 2) {
	Tcl_WrongNumArgs(interp, 1, objv, "provider");
	return TCL_ERROR;
    }

    name = Tcl_GetStringFromObj(objv[1], NULL);
    if (!OSSL_PROVIDER_try_load(NULL, (const char *) name, 1)) {
	Tcl_AppendResult(interp, GET_ERR_REASON(), (char *) NULL);
	return TCL_ERROR;
    }

    return TCL_OK;
}
#endif

/*******************************************************************/

/*
 *-------------------------------------------------------------------
 *
 * VersionObjCmd --
 *
 *	Return a string with the OpenSSL version info.
 *
 * Results:
 *	A standard Tcl result.
 *
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    Tcl_CreateObjCommand(interp, "tls::cipher", CipherObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::ciphers", CiphersObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::digests", DigestsObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::kdfs", KdfsObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::macs", MacsObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::pkeys", PkeysObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::protocols", ProtocolsObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
#if OPENSSL_VERSION_NUMBER >= 0x30000000L
    Tcl_CreateObjCommand(interp, "tls::provider", ProviderObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
#endif
    Tcl_CreateObjCommand(interp, "tls::version", VersionObjCmd, (ClientData) NULL, (Tcl_CmdDeleteProc *) NULL);
    return TCL_OK;
}

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