| /********************************************************************************/ |
| /* */ |
| /* TPM public key TPM2B_PUBLIC to TPM2B_ECC_POINT */ |
| /* Written by Ken Goldman */ |
| /* IBM Thomas J. Watson Research Center */ |
| /* */ |
| /* (c) Copyright IBM Corporation 2017 - 2019 */ |
| /* */ |
| /* All rights reserved. */ |
| /* */ |
| /* Redistribution and use in source and binary forms, with or without */ |
| /* modification, are permitted provided that the following conditions are */ |
| /* met: */ |
| /* */ |
| /* Redistributions of source code must retain the above copyright notice, */ |
| /* this list of conditions and the following disclaimer. */ |
| /* */ |
| /* Redistributions in binary form must reproduce the above copyright */ |
| /* notice, this list of conditions and the following disclaimer in the */ |
| /* documentation and/or other materials provided with the distribution. */ |
| /* */ |
| /* Neither the names of the IBM Corporation nor the names of its */ |
| /* contributors may be used to endorse or promote products derived from */ |
| /* this software without specific prior written permission. */ |
| /* */ |
| /* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS */ |
| /* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT */ |
| /* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR */ |
| /* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT */ |
| /* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, */ |
| /* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT */ |
| /* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, */ |
| /* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY */ |
| /* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */ |
| /* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE */ |
| /* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ |
| /********************************************************************************/ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <string.h> |
| #include <stdint.h> |
| |
| #include <ibmtss/tsserror.h> |
| #include <ibmtss/tssutils.h> |
| #include <ibmtss/tssresponsecode.h> |
| #include <ibmtss/Unmarshal_fp.h> |
| #include <ibmtss/tssmarshal.h> |
| |
| static void printUsage(void); |
| |
| extern int tssUtilsVerbose; |
| |
| int main(int argc, char *argv[]) |
| { |
| TPM_RC rc = 0; |
| int i; /* argc iterator */ |
| const char *publicKeyFilename = NULL; |
| const char *pointFilename = NULL; |
| TPM2B_PUBLIC public; |
| TPM2B_ECC_POINT eccPoint2b; |
| |
| tssUtilsVerbose = FALSE; |
| for (i=1 ; (i<argc) && (rc == 0) ; i++) { |
| if (strcmp(argv[i],"-ipu") == 0) { |
| i++; |
| if (i < argc) { |
| publicKeyFilename = argv[i]; |
| } |
| else { |
| printf("-ipu option needs a value\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i],"-pt") == 0) { |
| i++; |
| if (i < argc) { |
| pointFilename = argv[i]; |
| } |
| else { |
| printf("-pt option needs a value\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i],"-h") == 0) { |
| printUsage(); |
| } |
| else if (strcmp(argv[i],"-v") == 0) { |
| tssUtilsVerbose = TRUE; |
| } |
| else { |
| printf("\n%s is not a valid option\n", argv[i]); |
| printUsage(); |
| } |
| } |
| if (publicKeyFilename == NULL) { |
| printf("Missing public key parameter -ipu\n"); |
| printUsage(); |
| } |
| if (pointFilename == NULL) { |
| printf("Missing point file name parameter -pt\n"); |
| printUsage(); |
| } |
| /* read the TPM public key to a structure */ |
| if (rc == 0) { |
| rc = TSS_File_ReadStructureFlag(&public, |
| (UnmarshalFunctionFlag_t)TSS_TPM2B_PUBLIC_Unmarshalu, |
| TRUE, /* NULL permitted */ |
| publicKeyFilename); |
| } |
| if (rc == 0) { |
| if (public.publicArea.type != TPM_ALG_ECC) { |
| printf("Public key parameter -ipu type %04x is not TPM_ALG_ECC\n", |
| public.publicArea.type); |
| printUsage(); |
| } |
| } |
| if (rc == 0) { |
| /* copy the TPMS_ECC_POINT */ |
| eccPoint2b.point = public.publicArea.unique.ecc; |
| /* TSS_TPM2B_ECC_POINT_Marshal() fills in the redundant TPM2B_ECC_POINT size */ |
| rc = TSS_File_WriteStructure(&eccPoint2b, |
| (MarshalFunction_t)TSS_TPM2B_ECC_POINT_Marshalu, |
| pointFilename); |
| |
| } |
| if (rc == 0) { |
| if (tssUtilsVerbose) printf("tpmpublic2eccpoint: success\n"); |
| } |
| else { |
| const char *msg; |
| const char *submsg; |
| const char *num; |
| printf("tpmpublic2eccpoint: failed, rc %08x\n", rc); |
| TSS_ResponseCode_toString(&msg, &submsg, &num, rc); |
| printf("%s%s%s\n", msg, submsg, num); |
| rc = EXIT_FAILURE; |
| } |
| return rc; |
| } |
| |
| static void printUsage(void) |
| { |
| printf("\n"); |
| printf("tpmpublic2eccpoint\n"); |
| printf("\n"); |
| printf("Converts an EC TPM2B_PUBLIC to TPM2B_ECC_POINT. The intended use case\n"); |
| printf("is to convert the public key output of certain commands (TPM2_CreatePrimary,\n"); |
| printf("TPM2_Create, TPM2_CreateLoaded, TPM2_ReadPublic) to a format useful for\n"); |
| printf("TPM2_ZGen_2Phase.\n"); |
| printf("\n"); |
| printf("\t-ipu\tEC public key input file in TPM TPM2B_PUBLIC format\n"); |
| printf("\t-pt\tEC public key output file in TPM TPM2B_ECC_POINT format\n"); |
| exit(1); |
| } |