| /********************************************************************************/ |
| /* */ |
| /* RSA_Encrypt */ |
| /* 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/tssresponsecode.h> |
| #include <ibmtss/tssmarshal.h> |
| |
| static TPM_RC getKeySize(TSS_CONTEXT *tssContext, |
| TPMI_RSA_KEY_BITS *keyBits, |
| TPMI_DH_PCR objectHandle); |
| static void printRsaEncrypt(RSA_Encrypt_Out *out); |
| static void printUsage(void); |
| |
| extern int tssUtilsVerbose; |
| |
| int main(int argc, char *argv[]) |
| { |
| TPM_RC rc = 0; |
| int i; /* argc iterator */ |
| TSS_CONTEXT *tssContext = NULL; |
| RSA_Encrypt_In in; |
| RSA_Encrypt_Out out; |
| TPMI_DH_OBJECT keyHandle = 0; |
| TPMI_RSA_KEY_BITS keyBits; |
| const char *decryptFilename = NULL; |
| const char *encryptFilename = NULL; |
| |
| uint16_t written = 0; |
| size_t length = 0; |
| uint8_t *buffer = NULL; /* for the free */ |
| |
| 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],"-id") == 0) { |
| i++; |
| if (i < argc) { |
| decryptFilename = argv[i]; |
| } |
| else { |
| printf("-id option needs a value\n"); |
| printUsage(); |
| } |
| } |
| else if (strcmp(argv[i],"-oe") == 0) { |
| i++; |
| if (i < argc) { |
| encryptFilename = argv[i]; |
| } |
| else { |
| printf("-oe 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 (keyHandle == 0) { |
| printf("Missing handle parameter -hk\n"); |
| printUsage(); |
| } |
| if (decryptFilename == NULL) { |
| printf("Missing decrypted file -id\n"); |
| printUsage(); |
| } |
| /* Start a TSS context */ |
| if (rc == 0) { |
| rc = TSS_Create(&tssContext); |
| } |
| /* get the public modulus size for checks and padding */ |
| if (rc == 0) { |
| rc = getKeySize(tssContext, &keyBits, keyHandle); |
| } |
| if (rc == 0) { |
| rc = TSS_File_ReadBinaryFile(&buffer, /* freed @1 */ |
| &length, |
| decryptFilename); |
| } |
| if (rc == 0) { |
| if (length > (keyBits / 8U)) { |
| printf("Input data too long %u\n", (unsigned int)length); |
| rc = TSS_RC_INSUFFICIENT_BUFFER; |
| } |
| } |
| if (rc == 0) { |
| /* Handle of key that will perform rsaencrypting */ |
| in.keyHandle = keyHandle; |
| |
| /* Table 158 - Definition of {RSA} TPM2B_PUBLIC_KEY_RSA Structure */ |
| { |
| in.message.t.size = (uint16_t)length; /* cast safe, range tested above */ |
| memcpy(in.message.t.buffer, buffer, length); |
| } |
| /* padding scheme */ |
| { |
| /* Table 157 - Definition of {RSA} TPMT_RSA_DECRYPT Structure */ |
| in.inScheme.scheme = TPM_ALG_NULL; |
| } |
| /* label */ |
| { |
| /* NOTE: label requires the last byte to be zero. I.e., when implemented, do not set |
| the in.label.t.size to strlen() */ |
| /* Table 73 - Definition of TPM2B_DATA Structure */ |
| in.label.t.size = 0; |
| } |
| } |
| free (buffer); /* @1 */ |
| buffer = NULL; |
| /* call TSS to execute the command */ |
| if (rc == 0) { |
| rc = TSS_Execute(tssContext, |
| (RESPONSE_PARAMETERS *)&out, |
| (COMMAND_PARAMETERS *)&in, |
| NULL, |
| TPM_CC_RSA_Encrypt, |
| TPM_RH_NULL, NULL, 0); |
| } |
| { |
| TPM_RC rc1 = TSS_Delete(tssContext); |
| if (rc == 0) { |
| rc = rc1; |
| } |
| } |
| if ((rc == 0) && (encryptFilename != NULL)) { |
| rc = TSS_Structure_Marshal(&buffer, /* freed @1 */ |
| &written, |
| &out.outData, |
| (MarshalFunction_t)TSS_TPM2B_PUBLIC_KEY_RSA_Marshalu); |
| } |
| if ((rc == 0) && (encryptFilename != NULL)) { |
| rc = TSS_File_WriteBinaryFile(buffer + sizeof(uint16_t), |
| written - sizeof(uint16_t), |
| encryptFilename); |
| } |
| if (rc == 0) { |
| if (tssUtilsVerbose) printRsaEncrypt(&out); |
| if (tssUtilsVerbose) printf("rsaencrypt: success\n"); |
| } |
| else { |
| const char *msg; |
| const char *submsg; |
| const char *num; |
| printf("rsaencrypt: failed, rc %08x\n", rc); |
| TSS_ResponseCode_toString(&msg, &submsg, &num, rc); |
| printf("%s%s%s\n", msg, submsg, num); |
| rc = EXIT_FAILURE; |
| } |
| free(buffer); /* @1 */ |
| return rc; |
| } |
| |
| /* getKeySize() gets the key size in bits */ |
| |
| static TPM_RC getKeySize(TSS_CONTEXT *tssContext, |
| TPMI_RSA_KEY_BITS *keyBits, |
| TPMI_DH_PCR objectHandle) |
| { |
| TPM_RC rc = 0; |
| ReadPublic_In in; |
| ReadPublic_Out out; |
| |
| /* call TSS to execute the command */ |
| if (rc == 0) { |
| in.objectHandle = objectHandle; |
| rc = TSS_Execute(tssContext, |
| (RESPONSE_PARAMETERS *)&out, |
| (COMMAND_PARAMETERS *)&in, |
| NULL, |
| TPM_CC_ReadPublic, |
| TPM_RH_NULL, NULL, 0); |
| } |
| if (rc == 0) { |
| *keyBits = out.outPublic.publicArea.parameters.rsaDetail.keyBits; |
| if (tssUtilsVerbose) printf("getKeySize: size %u\n", *keyBits); |
| } |
| return rc; |
| } |
| |
| static void printRsaEncrypt(RSA_Encrypt_Out *out) |
| { |
| TSS_PrintAll("outData", out->outData.t.buffer, out->outData.t.size); |
| } |
| |
| static void printUsage(void) |
| { |
| printf("\n"); |
| printf("rsaencrypt\n"); |
| printf("\n"); |
| printf("Runs TPM2_RSA_Encrypt\n"); |
| printf("\n"); |
| printf("\t-hk\tkey handle\n"); |
| printf("\t-id\tdecrypt file name\n"); |
| printf("\t[-oe\tencrypt file name (default do not save)]\n"); |
| exit(1); |
| } |