TclTLS
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Comment:Added kdfs command to list supported KDFs
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SHA3-256: baa6119ddf0ebcbcc8736770ffe97a2be51e2b5f1f36e915e81320431bb35389
User & Date: bohagan on 2023-12-23 21:23:51
Other Links: branch diff | manifest | tags
Context
2023-12-24
00:00
Added HKDF KDF check-in: 89db32e691 user: bohagan tags: crypto
2023-12-23
21:23
Added kdfs command to list supported KDFs check-in: baa6119ddf user: bohagan tags: crypto
2023-12-21
20:15
Merged in master changes check-in: 265ace08fe user: bohagan tags: crypto
Changes
Side-by-Side Diff Ignore Whitespace Patch
Modified generic/tlsDigest.c from [188fdc0d84] to [10998241d5].
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	}

	/* Get option */
	if (Tcl_GetIndexFromObj(interp, objv[idx], command_opts, "option", 0, &fn) != TCL_OK) {
	    return TCL_ERROR;
	}

	/* Validate arg has value */
	/* Validate arg has a value */
	if (fn > _opt_hexadecimal) {
	    if (++idx >= objc) {
		Tcl_AppendResult(interp, "No value for option \"", command_opts[fn], "\"", (char *) NULL);
		return TCL_ERROR;
	    }
	}
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Modified generic/tlsEncrypt.c from [c0069dd5ac] to [5bdc760fa1].
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	}

	/* Get option */
	if (Tcl_GetIndexFromObj(interp, objv[idx], command_opts, "option", 0, &fn) != TCL_OK) {
	    return TCL_ERROR;
	}

	/* Validate arg has value */
	/* Validate arg has a value */
	if (++idx >= objc) {
	    Tcl_AppendResult(interp, "No value for option \"", command_opts[fn], "\"", (char *) NULL);
	return TCL_ERROR;
    }

	switch(fn) {
	case _opt_chan:
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Modified generic/tlsInfo.c from [13359ae431] to [b61000448f]. 
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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 "tclOpts.h"
#include <openssl/crypto.h>
#include <openssl/ssl.h>
#include <openssl/safestack.h>

/*
 * Valid SSL and TLS Protocol Versions
 */
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    LAPPEND_BOOL(interp, listObj, "Custom IV", flags & EVP_CIPH_CUSTOM_IV);
    LAPPEND_BOOL(interp, listObj, "Control Init", flags & EVP_CIPH_CTRL_INIT);
    LAPPEND_BOOL(interp, listObj, "Custom Cipher", flags & EVP_CIPH_FLAG_CUSTOM_CIPHER);
    LAPPEND_BOOL(interp, listObj, "AEAD Cipher", flags & EVP_CIPH_FLAG_AEAD_CIPHER);
    LAPPEND_BOOL(interp, listObj, "Custom Copy", flags & EVP_CIPH_CUSTOM_COPY);
    LAPPEND_BOOL(interp, listObj, "Non FIPS Allow", flags & EVP_CIPH_FLAG_NON_FIPS_ALLOW);
    LAPPEND_OBJ(interp, resultObj, "flags", listObj);

    /* CTX only properties */
    {
	EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();
	int tag_len = 0;

	EVP_EncryptInit_ex(ctx, cipher, NULL, NULL, NULL);
	if (mode == EVP_CIPH_GCM_MODE || mode == EVP_CIPH_OCB_MODE) {
	    tag_len = EVP_GCM_TLS_TAG_LEN; /* EVP_MAX_AEAD_TAG_LENGTH */
	} else if (mode == EVP_CIPH_CCM_MODE) {
	    tag_len = EVP_CCM_TLS_TAG_LEN;
	} else if (cipher == EVP_get_cipherbyname("chacha20-poly1305")) {
	    tag_len = EVP_CHACHAPOLY_TLS_TAG_LEN; /* POLY1305_BLOCK_SIZE */
	}
	EVP_CIPHER_CTX_free(ctx);
	LAPPEND_INT(interp, resultObj, "tag_length", tag_len);
    }
    
    /* AEAD properties */
    {
	int aad_len = 0;
	if (flags & EVP_CIPH_FLAG_AEAD_CIPHER) {
	    aad_len = EVP_AEAD_TLS1_AAD_LEN;
	}
	LAPPEND_INT(interp, resultObj, "aad_length", aad_len);
    }

    Tcl_SetObjResult(interp, resultObj);
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------
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}

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

/*
 *-------------------------------------------------------------------
 *
 * KdfList --
 *
 *	Return a list of all KDF algorithms
 *
 * Results:
 *	A standard Tcl list.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------
 */
int KdfList(Tcl_Interp *interp, char *select_name) {
    Tcl_Obj *resultObj = Tcl_NewListObj(0, NULL);
    if (resultObj == NULL) {
	return TCL_ERROR;
    }

    Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj("hkdf", -1));
    Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj("pbkdf2", -1));
    Tcl_ListObjAppendElement(interp, resultObj, Tcl_NewStringObj("scrypt", -1));
    Tcl_SetObjResult(interp, resultObj);
    return TCL_OK;
}

/*
 *-------------------------------------------------------------------
 *
 * KdfsObjCmd --
 *
 *	Return a list of all valid Key Derivation Function (KDF).
 *
 * Results:
 *	A standard Tcl list.
 *
 * Side effects:
 *	None.
 *
 *-------------------------------------------------------------------
 */
int KdfsObjCmd(ClientData clientData, Tcl_Interp *interp, int objc, Tcl_Obj *const objv[]) {
    dprintf("Called");

    /* Clear errors */
    Tcl_ResetResult(interp);
    ERR_clear_error();


    /* Validate arg count */
    if (objc == 1) {
	return KdfList(interp, NULL);

    } else if (objc == 2) {


    } else {
	Tcl_WrongNumArgs(interp, 1, objv, "?name?");
	return TCL_ERROR;
    }
    return TCL_OK;
	clientData = clientData;
}

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

/*
 *-------------------------------------------------------------------
 *
 * MacInfo --
 *
 *	Return a list of properties and values for macName.
 *
 * Results:
 *	A standard Tcl list.
 *
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    OpenSSL_add_all_digests();
    OpenSSL_add_all_algorithms();
#endif

    Tcl_CreateObjCommand(interp, "tls::cipher", CipherObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::ciphers", CiphersObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::digests", DigestsObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::kdfs", KdfsObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::macs", MacsObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::pkeys", PkeysObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::protocols", ProtocolsObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    Tcl_CreateObjCommand(interp, "tls::version", VersionObjCmd, (ClientData) 0, (Tcl_CmdDeleteProc *) NULL);
    return TCL_OK;
}
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