| /********************************************************************************/ |
| /* */ |
| /* VerifySignature */ |
| /* Written by Ken Goldman */ |
| /* IBM Thomas J. Watson Research Center */ |
| /* */ |
| /* (c) Copyright IBM Corporation 2015 - 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/tss.h> |
| #include <ibmtss/tssutils.h> |
| #include <ibmtss/Unmarshal_fp.h> |
| #include <ibmtss/tsscryptoh.h> |
| #include <ibmtss/tsscrypto.h> |
| #include <ibmtss/tssmarshal.h> |
| #include <ibmtss/tssresponsecode.h> |
| |
| #include "cryptoutils.h" |
| |
| static void printUsage(void); |
| TPM_RC rawUnmarshal(TPMT_SIGNATURE *target, |
| TPMI_ALG_PUBLIC algPublic, |
| TPMI_ALG_HASH halg, |
| uint8_t *buffer, size_t length); |
| |
| extern int tssUtilsVerbose; |
| |
| int main(int argc, char *argv[]) |
| { |
| TPM_RC rc = 0; |
| int i; /* argc iterator */ |
| TSS_CONTEXT *tssContext = NULL; |
| VerifySignature_In in; |
| VerifySignature_Out out; |
| TPMI_DH_OBJECT keyHandle = 0; |
| const char *pemFilename = NULL; |
| const char *hmacKeyFilename = NULL; |
| const char *signatureFilename = NULL; |
| TPMI_ALG_HASH halg = TPM_ALG_SHA256; |
| TPMI_ALG_PUBLIC algPublic = TPM_ALG_RSA; |
| const char *messageFilename = NULL; |
| int doHash = TRUE; |
| const char *ticketFilename = NULL; |
| int raw = FALSE; /* default TPMT_SIGNATURE */ |
| unsigned char *data = NULL; /* message */ |
| size_t dataLength; |
| uint8_t *buffer = NULL; /* for the free */ |
| uint8_t *buffer1 = NULL; /* for marshaling */ |
| size_t length = 0; |
| uint32_t sizeInBytes; /* hash algorithm mapped to size */ |
| TPMT_HA digest; /* digest of the message */ |
| TPMI_SH_AUTH_SESSION sessionHandle0 = TPM_RH_NULL; |
| unsigned int sessionAttributes0 = 0; |
| TPMI_SH_AUTH_SESSION sessionHandle1 = TPM_RH_NULL; |
| unsigned int sessionAttributes1 = 0; |
| TPMI_SH_AUTH_SESSION sessionHandle2 = TPM_RH_NULL; |
| unsigned int sessionAttributes2 = 0; |
| |
| setvbuf(stdout, 0, _IONBF, 0); /* output may be going through pipe to log file */ |
| TSS_SetProperty(NULL, TPM_TRACE_LEVEL, "1"); |
| tssUtilsVerbose = FALSE; |
| |
| /* command line argument defaults */ |
| for (i=1 ; (i<argc) && (rc == 0) ; i++) { |
| if (strcmp(argv[i],"-hk") == 0) { |
| i++; |
| if (i < argc) { |
| sscanf(argv[i],"%x", &keyHandle); |
| } |
| else { |
| printf("Missing parameter for -hk\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i],"-ipem") == 0) { |
| i++; |
| if (i < argc) { |
| pemFilename = argv[i]; |
| } |
| else { |
| printf("-ipem option needs a value\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i],"-ihmac") == 0) { |
| i++; |
| if (i < argc) { |
| hmacKeyFilename = argv[i]; |
| } |
| else { |
| printf("-ihmac option needs a value\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i],"-halg") == 0) { |
| i++; |
| if (i < argc) { |
| if (strcmp(argv[i],"sha1") == 0) { |
| halg = TPM_ALG_SHA1; |
| } |
| else if (strcmp(argv[i],"sha256") == 0) { |
| halg = TPM_ALG_SHA256; |
| } |
| else if (strcmp(argv[i],"sha384") == 0) { |
| halg = TPM_ALG_SHA384; |
| } |
| else if (strcmp(argv[i],"sha512") == 0) { |
| halg = TPM_ALG_SHA512; |
| } |
| else { |
| printf("Bad parameter %s for -halg\n", argv[i]); |
| printUsage(); |
| } |
| } |
| else { |
| printf("-halg option needs a value\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i], "-rsa") == 0) { |
| algPublic = TPM_ALG_RSA; |
| } |
| else if (strcmp(argv[i], "-ecc") == 0) { |
| algPublic = TPM_ALG_ECC; |
| } |
| else if (strcmp(argv[i],"-if") == 0) { |
| i++; |
| if (i < argc) { |
| messageFilename = argv[i]; |
| } |
| else { |
| printf("-if option needs a value\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i],"-ih") == 0) { |
| i++; |
| if (i < argc) { |
| messageFilename = argv[i]; |
| doHash = FALSE; |
| } |
| else { |
| printf("-ih option needs a value\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i],"-is") == 0) { |
| i++; |
| if (i < argc) { |
| signatureFilename = argv[i]; |
| } |
| else { |
| printf("-is option needs a value\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i],"-raw") == 0) { |
| raw = TRUE; |
| } |
| else if (strcmp(argv[i],"-tk") == 0) { |
| i++; |
| if (i < argc) { |
| ticketFilename = argv[i]; |
| } |
| else { |
| printf("-tk option needs a value\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i],"-se0") == 0) { |
| i++; |
| if (i < argc) { |
| sscanf(argv[i],"%x", &sessionHandle0); |
| } |
| else { |
| printf("Missing parameter for -se0\n"); |
| printUsage(); |
| } |
| i++; |
| if (i < argc) { |
| sscanf(argv[i],"%x", &sessionAttributes0); |
| if (sessionAttributes0 > 0xff) { |
| printf("Out of range session attributes for -se0\n"); |
| printUsage(); |
| } |
| } |
| else { |
| printf("Missing parameter for -se0\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i],"-se1") == 0) { |
| i++; |
| if (i < argc) { |
| sscanf(argv[i],"%x", &sessionHandle1); |
| } |
| else { |
| printf("Missing parameter for -se1\n"); |
| printUsage(); |
| } |
| i++; |
| if (i < argc) { |
| sscanf(argv[i],"%x", &sessionAttributes1); |
| if (sessionAttributes1 > 0xff) { |
| printf("Out of range session attributes for -se1\n"); |
| printUsage(); |
| } |
| } |
| else { |
| printf("Missing parameter for -se1\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i],"-se2") == 0) { |
| i++; |
| if (i < argc) { |
| sscanf(argv[i],"%x", &sessionHandle2); |
| } |
| else { |
| printf("Missing parameter for -se2\n"); |
| printUsage(); |
| } |
| i++; |
| if (i < argc) { |
| sscanf(argv[i],"%x", &sessionAttributes2); |
| if (sessionAttributes2 > 0xff) { |
| printf("Out of range session attributes for -se2\n"); |
| printUsage(); |
| } |
| } |
| else { |
| printf("Missing parameter for -se2\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i],"-h") == 0) { |
| printUsage(); |
| } |
| else if (strcmp(argv[i],"-v") == 0) { |
| tssUtilsVerbose = TRUE; |
| TSS_SetProperty(NULL, TPM_TRACE_LEVEL, "2"); |
| } |
| else { |
| printf("\n%s is not a valid option\n", argv[i]); |
| printUsage(); |
| } |
| } |
| if ((keyHandle == 0) && (pemFilename == NULL) && (hmacKeyFilename == NULL)) { |
| printf("Missing handle parameter -hk, PEM file name -ipem, or HMAC key file name -ihmac\n"); |
| printUsage(); |
| } |
| if (messageFilename == NULL) { |
| printf("Missing message file name -if or hash file name -ih\n"); |
| printUsage(); |
| } |
| if (signatureFilename == NULL) { |
| printf("Missing signature parameter -is\n"); |
| printUsage(); |
| } |
| if (rc == 0) { |
| rc = TSS_File_ReadBinaryFile(&data, /* freed @1 */ |
| &dataLength, |
| messageFilename); |
| } |
| /* hash the file */ |
| if (rc == 0) { |
| if (doHash) { |
| if (rc == 0) { |
| if (tssUtilsVerbose) printf("verifysignature: Hashing message file %s with halg %04x\n", |
| messageFilename, halg); |
| digest.hashAlg = halg; |
| sizeInBytes = TSS_GetDigestSize(digest.hashAlg); |
| rc = TSS_Hash_Generate(&digest, |
| dataLength, data, |
| 0, NULL); |
| } |
| if (rc == 0) { |
| if (tssUtilsVerbose) printf("verifysignature: Copying hash\n"); |
| /* digest to be verified */ |
| in.digest.t.size = sizeInBytes; |
| memcpy(&in.digest.t.buffer, (uint8_t *)&digest.digest, sizeInBytes); |
| } |
| } |
| else { |
| if (tssUtilsVerbose) printf("verifysignature: Using hash input file %s\n", messageFilename); |
| in.digest.t.size = (uint16_t)dataLength; |
| memcpy(&in.digest.t.buffer, (uint8_t *)data, dataLength); |
| } |
| if (rc == 0) { |
| if (tssUtilsVerbose) TSS_PrintAll("verifysignature: hash", |
| (uint8_t *)&in.digest.t.buffer, in.digest.t.size); |
| } |
| } |
| if (rc == 0) { |
| rc = TSS_File_ReadBinaryFile(&buffer, /* freed @2 */ |
| &length, |
| signatureFilename); |
| } |
| if (rc == 0) { |
| if (!raw) { |
| uint32_t ilength = length; /* values that can move during the unmarshal */ |
| buffer1 = buffer; |
| /* input is TPMT_SIGNATURE */ |
| rc = TSS_TPMT_SIGNATURE_Unmarshalu(&in.signature, &buffer1, &ilength, NO); |
| } |
| else { |
| /* input is raw bytes */ |
| rc = rawUnmarshal(&in.signature, algPublic, halg, buffer, length); |
| } |
| } |
| if (keyHandle != 0) { |
| if (rc == 0) { |
| /* Handle of key that will perform verifying */ |
| in.keyHandle = keyHandle; |
| } |
| /* Start a TSS context */ |
| if (rc == 0) { |
| rc = TSS_Create(&tssContext); |
| } |
| /* call TSS to execute the command */ |
| if (rc == 0) { |
| rc = TSS_Execute(tssContext, |
| (RESPONSE_PARAMETERS *)&out, |
| (COMMAND_PARAMETERS *)&in, |
| NULL, |
| TPM_CC_VerifySignature, |
| sessionHandle0, NULL, sessionAttributes0, |
| sessionHandle1, NULL, sessionAttributes1, |
| sessionHandle2, NULL, sessionAttributes2, |
| TPM_RH_NULL, NULL, 0); |
| } |
| { |
| TPM_RC rc1 = TSS_Delete(tssContext); |
| if (rc == 0) { |
| rc = rc1; |
| } |
| } |
| if ((rc == 0) && (ticketFilename != NULL)) { |
| rc = TSS_File_WriteStructure(&out.validation, |
| (MarshalFunction_t)TSS_TPMT_TK_VERIFIED_Marshalu, |
| ticketFilename); |
| } |
| } |
| if (pemFilename != NULL) { |
| if (rc == 0) { |
| rc = verifySignatureFromPem((uint8_t *)&in.digest.t.buffer, |
| in.digest.t.size, |
| &in.signature, |
| halg, |
| pemFilename); |
| } |
| if (tssUtilsVerbose) printf("verifysignature: verifySignatureFromPem rc %08x\n", rc); |
| } |
| if (hmacKeyFilename != NULL) { |
| if (rc == 0) { |
| rc = verifySignatureFromHmacKey((uint8_t *)&in.digest.t.buffer, |
| in.digest.t.size, |
| &in.signature, |
| halg, |
| hmacKeyFilename); |
| } |
| if (tssUtilsVerbose) printf("verifysignature: verifySignatureFromHmacKey rc %08x\n", rc); |
| } |
| if (rc == 0) { |
| if (tssUtilsVerbose) printf("verifysignature: success\n"); |
| } |
| else { |
| const char *msg; |
| const char *submsg; |
| const char *num; |
| printf("verifysignature: failed, rc %08x\n", rc); |
| TSS_ResponseCode_toString(&msg, &submsg, &num, rc); |
| printf("%s%s%s\n", msg, submsg, num); |
| rc = EXIT_FAILURE; |
| } |
| free(data); /* @1 */ |
| free(buffer); /* @2 */ |
| return rc; |
| } |
| |
| /* rawUnmarshal() unmarshals a raw openssl signature 'buffer' into the TPMT_SIGNATURE structure. |
| |
| It handles RSA and ECC P256. |
| */ |
| |
| TPM_RC rawUnmarshal(TPMT_SIGNATURE *tSignature, |
| TPMI_ALG_PUBLIC algPublic, |
| TPMI_ALG_HASH halg, |
| uint8_t *signatureBin, size_t signatureBinLen) |
| { |
| TPM_RC rc = 0; |
| switch (algPublic) { |
| case TPM_ALG_RSA: |
| rc = convertRsaBinToTSignature(tSignature, |
| halg, |
| signatureBin, |
| signatureBinLen); |
| break; |
| #ifndef TPM_TSS_NOECC |
| case TPM_ALG_ECC: |
| /* TPM_ALG_ECC, the raw signature is DER encoded R and S elements */ |
| rc = convertEcBinToTSignature(tSignature, |
| halg, |
| signatureBin, |
| signatureBinLen); |
| break; |
| #endif /* TPM_TSS_NOECC */ |
| default: |
| printf("rawUnmarshal: algorithm %04x not supported\n", algPublic); |
| rc = TPM_RC_ASYMMETRIC; |
| } |
| return rc; |
| } |
| |
| static void printUsage(void) |
| { |
| printf("\n"); |
| printf("verifysignature\n"); |
| printf("\n"); |
| printf("Runs TPM2_VerifySignature and/or verifies using the PEM public key\n"); |
| printf("\n"); |
| printf("\t-if\tinput message file name\n"); |
| printf("\t-ih\tinput hash file name\n"); |
| printf("\n"); |
| printf("\t\tOne of -if, -ih must be specified\n"); |
| printf("\n"); |
| printf("\t-is\tsignature file name\n"); |
| printf("\t[-raw\tsignature specified by -is is in raw format]\n"); |
| printf("\t\t(default TPMT_SIGNATURE)\n"); |
| printf("\t-hk\tkey handle\n"); |
| printf("\t-ipem\tpublic key PEM format file name to verify signature\n"); |
| printf("\t-ihmac\tHMAC key in raw binary format file name to verify signature\n"); |
| printf("\n"); |
| printf("\t\tOne of -hk, -ipem, -ihmac must be specified\n"); |
| printf("\n"); |
| printf("\t[-tk\tticket file name (requires -hk)]\n"); |
| printf("\n"); |
| printf("\t[-halg\t(sha1, sha256, sha384 sha512) (default sha256)]\n"); |
| printf("\n"); |
| printf("\t[Asymmetric Key Algorithm]\n"); |
| printf("\n"); |
| printf("\t[-rsa\t(default)]\n"); |
| printf("\t[-ecc\t]\n"); |
| printf("\n"); |
| printf("\t-se[0-2] session handle / attributes (default NULL)\n"); |
| printf("\t01\tcontinue\n"); |
| printf("\t20\tcommand decrypt\n"); |
| printf("\t80\taudit\n"); |
| exit(1); |
| } |