diff options
Diffstat (limited to 'roms/skiboot/libstb/tss2/ibmtpm20tss/utils/policysigned.c')
| -rw-r--r-- | roms/skiboot/libstb/tss2/ibmtpm20tss/utils/policysigned.c | 456 |
1 files changed, 456 insertions, 0 deletions
diff --git a/roms/skiboot/libstb/tss2/ibmtpm20tss/utils/policysigned.c b/roms/skiboot/libstb/tss2/ibmtpm20tss/utils/policysigned.c new file mode 100644 index 000000000..469cec9b2 --- /dev/null +++ b/roms/skiboot/libstb/tss2/ibmtpm20tss/utils/policysigned.c @@ -0,0 +1,456 @@ +/********************************************************************************/ +/* */ +/* PolicySigned */ +/* 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> + +#ifdef TPM_POSIX +#include <netinet/in.h> +#endif +#ifdef TPM_WINDOWS +#include <winsock2.h> +#endif + +#include <ibmtss/tss.h> +#include <ibmtss/tssutils.h> +#include <ibmtss/tsscryptoh.h> +#include <ibmtss/tsscrypto.h> +#include <ibmtss/tssresponsecode.h> +#include <ibmtss/tssmarshal.h> + +#include "cryptoutils.h" + +static void printUsage(void); +static TPM_RC signAHash(TPM2B_PUBLIC_KEY_RSA *signature, + TPMT_HA *aHash, + const char *signingKeyFilename, + const char *signingKeyPassword); + +extern int tssUtilsVerbose; + +int main(int argc, char *argv[]) +{ + TPM_RC rc = 0; + int i; /* argc iterator */ + TSS_CONTEXT *tssContext = NULL; + PolicySigned_In in; + PolicySigned_Out out; + TPMI_DH_OBJECT authObject = 0; + TPMI_SH_POLICY policySession = 0; + const char *nonceTPMFilename = NULL; + const char *cpHashAFilename = NULL; + const char *policyRefFilename = NULL; + const char *ticketFilename = NULL; + const char *timeoutFilename = NULL; + int32_t expiration = 0; + const char *signingKeyFilename = NULL; + const char *signingKeyPassword = NULL; + const char *signatureFilename = NULL; + uint8_t *signature = NULL; + size_t signatureLength; + TPMI_ALG_HASH halg = TPM_ALG_SHA256; + TPMT_HA aHash; + + 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 */ + + in.nonceTPM.b.size = 0; /* three of the components to aHash are optional */ + in.cpHashA.b.size = 0; + in.policyRef.b.size = 0; + + for (i=1 ; (i<argc) && (rc == 0) ; i++) { + if (strcmp(argv[i],"-hk") == 0) { + i++; + if (i < argc) { + sscanf(argv[i],"%x", &authObject); + } + else { + printf("Missing parameter for -hk\n"); + printUsage(); + } + } + else if (strcmp(argv[i],"-ha") == 0) { + i++; + if (i < argc) { + sscanf(argv[i],"%x", &policySession); + } + else { + printf("Missing parameter for -ha\n"); + printUsage(); + } + } + else if (strcmp(argv[i],"-in") == 0) { + i++; + if (i < argc) { + nonceTPMFilename = argv[i]; + } + else { + printf("-in option needs a value\n"); + printUsage(); + } + } + else if (strcmp(argv[i],"-cp") == 0) { + i++; + if (i < argc) { + cpHashAFilename = argv[i]; + } + else { + printf("-cp option needs a value\n"); + printUsage(); + } + } + else if (strcmp(argv[i],"-pref") == 0) { + i++; + if (i < argc) { + policyRefFilename = argv[i]; + } + else { + printf("-pref option needs a value\n"); + printUsage(); + } + } + else if (strcmp(argv[i],"-exp") == 0) { + i++; + if (i < argc) { + expiration = atoi(argv[i]); + } + else { + printf("Missing parameter for -exp\n"); + printUsage(); + } + } + else if (strcmp(argv[i],"-sk") == 0) { + i++; + if (i < argc) { + signingKeyFilename = argv[i]; + } + else { + printf("-sk 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],"-tk") == 0) { + i++; + if (i < argc) { + ticketFilename = argv[i]; + } + else { + printf("-tk option needs a value\n"); + printUsage(); + } + } + else if (strcmp(argv[i],"-to") == 0) { + i++; + if (i < argc) { + timeoutFilename = argv[i]; + } + else { + printf("-to option needs a value\n"); + printUsage(); + } + } + else if (strcmp(argv[i],"-pwdk") == 0) { + i++; + if (i < argc) { + signingKeyPassword = argv[i]; + } + else { + printf("-pwdk 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],"-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 (authObject == 0) { + printf("Missing handle parameter -hk\n"); + printUsage(); + } + if (policySession == 0) { + printf("Missing handle parameter -ha\n"); + printUsage(); + } + if ((signingKeyFilename == NULL) && (signatureFilename == NULL)) { + printf("Missing signing key -sk or signature -is\n"); + printUsage(); + } + if ((signingKeyFilename != NULL) && (signatureFilename != NULL)) { + printf("Cannot have both signing key -sk and signature -is\n"); + printUsage(); + } + if (rc == 0) { + in.authObject = authObject; + in.policySession = policySession; + } + /* read the optional components - nonceTPM, cpHashA, policyRef */ + if ((rc == 0) && (nonceTPMFilename != NULL)) { + rc = TSS_File_Read2B(&in.nonceTPM.b, + sizeof(in.nonceTPM.t.buffer), + nonceTPMFilename); + } + if ((rc == 0) && (cpHashAFilename != NULL)) { + rc = TSS_File_Read2B(&in.cpHashA.b, + sizeof(in.cpHashA.t.buffer), + cpHashAFilename); + } + if ((rc == 0) && (policyRefFilename != NULL)) { + rc = TSS_File_Read2B(&in.policyRef.b, + sizeof(in.policyRef.t.buffer), + policyRefFilename); + } + if (rc == 0) { + in.expiration = expiration; + in.auth.sigAlg = TPM_ALG_RSASSA; /* sample uses RSASSA */ + in.auth.signature.rsassa.hash = halg; + } + /* sample code using a PEM key to sign */ + if (signingKeyFilename != NULL) { + /* calculate the digest from the 4 components according to the TPM spec Part 3. */ + /* aHash = HauthAlg(nonceTPM || expiration || cpHashA || policyRef) (13) */ + if (rc == 0) { + int32_t expirationNbo = htonl(in.expiration); + aHash.hashAlg = halg; + /* This varargs function takes length / array pairs. It skips pairs with a length of + zero. This handles the three optional components (default length zero) with no + special handling. */ + rc = TSS_Hash_Generate(&aHash, /* largest size of a digest */ + in.nonceTPM.t.size, in.nonceTPM.t.buffer, + sizeof(int32_t), &expirationNbo, + in.cpHashA.t.size, in.cpHashA.t.buffer, + in.policyRef.t.size, in.policyRef.t.buffer, + 0, NULL); + } + /* sign aHash */ + if (rc == 0) { + rc = signAHash(&in.auth.signature.rsassa.sig, /* sample uses RSASSA */ + &aHash, + signingKeyFilename, signingKeyPassword); + } + } + /* sample code where the signature has been generated externally */ + if (signatureFilename != NULL) { + if (rc == 0) { + rc = TSS_File_ReadBinaryFile((unsigned char **)&signature, /* freed @1 */ + &signatureLength, + signatureFilename); + } + if (rc == 0) { + if (signatureLength > sizeof(in.auth.signature.rsassa.sig.t.buffer)) { + printf("Signature length %lu is greater than buffer %lu\n", + (unsigned long)signatureLength, + (unsigned long)sizeof(in.auth.signature.rsassa.sig.t.buffer)); + rc = TSS_RC_RSA_SIGNATURE; + } + } + if (rc == 0) { + in.auth.signature.rsassa.sig.t.size = (uint16_t)signatureLength; + memcpy(&in.auth.signature.rsassa.sig.t.buffer, signature, signatureLength); + } + } + /* 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_PolicySigned, + 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.policyTicket, + (MarshalFunction_t)TSS_TPMT_TK_AUTH_Marshalu, + ticketFilename); + } + if ((rc == 0) && (timeoutFilename != NULL)) { + rc = TSS_File_WriteBinaryFile(out.timeout.b.buffer, + out.timeout.b.size, + timeoutFilename); + } + if (rc == 0) { + if (tssUtilsVerbose) printf("policysigned: success\n"); + } + else { + const char *msg; + const char *submsg; + const char *num; + printf("policysigned: failed, rc %08x\n", rc); + TSS_ResponseCode_toString(&msg, &submsg, &num, rc); + printf("%s%s%s\n", msg, submsg, num); + rc = EXIT_FAILURE; + } + free(signature); /* @1 */ + return rc; +} + +/* signAHash() signs digest, returns signature. The signature TPM2B_PUBLIC_KEY_RSA is a member of + the TPMT_SIGNATURE command parameter. + + This sample signer uses a pem file signingKeyFilename with signingKeyPassword. + +*/ + +TPM_RC signAHash(TPM2B_PUBLIC_KEY_RSA *signature, + TPMT_HA *aHash, + const char *signingKeyFilename, + const char *signingKeyPassword) +{ + TPM_RC rc = 0; + void *rsaKey = NULL; + uint32_t sizeInBytes; /* hash algorithm mapped to size */ + size_t signatureLength; /* RSA_Sign() output */ + + if (rc == 0) { + sizeInBytes = TSS_GetDigestSize(aHash->hashAlg); +#if 0 + if (tssUtilsVerbose) { + TSS_PrintAll("signAHash: aHash", + (uint8_t *)(&aHash->digest), sizeInBytes); + } +#endif + } + /* read the PEM format private key into the private key structure */ + if (rc == 0) { + rc = convertPemToRsaPrivKey((void **)&rsaKey, /* freed @1 */ + signingKeyFilename, (void *)signingKeyPassword); + } + /* sign aHash */ + if (rc == 0) { + rc = signRSAFromRSA(signature->t.buffer, &signatureLength, + sizeof(signature->t.buffer), + (uint8_t *)(&aHash->digest), sizeInBytes, + aHash->hashAlg, + rsaKey); + } + if (rc == 0) { + signature->t.size = (uint16_t)signatureLength; /* length of RSA key checked above */ +#if 0 + if (tssUtilsVerbose) TSS_PrintAll("signAHash: signature", + signature->t.buffer, signature->t.size); +#endif + } + TSS_RsaFree(rsaKey); /* @1 *//* FIXME may be wrong for mbedtls */ + return rc; +} + + +static void printUsage(void) +{ + printf("\n"); + printf("policysigned\n"); + printf("\n"); + printf("Runs TPM2_PolicySigned\n"); + printf("\n"); + printf("\t-hk\tsignature verification key handle\n"); + printf("\t-ha\tpolicy session handle\n"); + printf("\t[-in\tnonceTPM file (default none)]\n"); + printf("\t[-cp\tcpHash file (default none)]\n"); + printf("\t[-pref\tpolicyRef file (default none)]\n"); + printf("\t[-exp\texpiration in decimal (default none)]\n"); + printf("\t[-halg\t(sha1, sha256, sha384, sha512) (default sha256)]\n"); + printf("\t-sk\tRSA signing key file name (PEM format)\n"); + printf("\t\tUse this signing key.\n"); + printf("\t-is\tsignature file name\n"); + printf("\t\tUse this signature from e.g., a smart card or other HSM.\n"); + printf("\t[-pwdk\tsigning key password (default null)]\n"); + printf("\t[-tk\tticket file name]\n"); + printf("\t[-to\ttimeout file name]\n"); + exit(1); +} |