| /** |
| * @file tlcTeeKeymaster_if.c |
| * @brief Contains trustlet connector interface implementations to |
| * handle key operations with TEE Keymaster trustlet |
| * |
| * Copyright Giesecke & Devrient GmbH 2012 |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. 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. |
| * 3. The name of the author may not be used to endorse or promote |
| * products derived from this software without specific prior |
| * written permission. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 <stdlib.h> |
| |
| #include "MobiCoreDriverApi.h" |
| #include "tlTeeKeymaster_Api.h" |
| #include "tlcTeeKeymaster_log.h" |
| #include "tlcTeeKeymaster_if.h" |
| |
| |
| /* Global definitions */ |
| static const uint32_t DEVICE_ID = MC_DEVICE_ID_DEFAULT; |
| static const mcUuid_t uuid = TEE_KEYMASTER_TL_UUID; |
| |
| /** |
| * TEE_Open |
| * |
| * Open session to the TEE Keymaster trustlet |
| * |
| * @param pSessionHandle [out] Return pointer to the session handle |
| */ |
| static tciMessage_ptr TEE_Open( |
| mcSessionHandle_t *pSessionHandle |
| ){ |
| tciMessage_ptr pTci = NULL; |
| mcResult_t mcRet; |
| |
| do |
| { |
| |
| /* Validate session handle */ |
| if (!pSessionHandle) |
| { |
| LOG_E("TEE_Open(): Invalid session handle\n"); |
| break; |
| } |
| |
| /* Initialize session handle data */ |
| bzero(pSessionHandle, sizeof(mcSessionHandle_t)); |
| |
| /* Open MobiCore device */ |
| mcRet = mcOpenDevice(DEVICE_ID); |
| if (MC_DRV_OK != mcRet) |
| { |
| LOG_E("TEE_Open(): mcOpenDevice returned: %d\n", mcRet); |
| break; |
| } |
| |
| /* Allocating WSM for TCI */ |
| mcRet = mcMallocWsm(DEVICE_ID, 0, sizeof(tciMessage_t), (uint8_t **) &pTci, 0); |
| if (MC_DRV_OK != mcRet) |
| { |
| LOG_E("TEE_Open(): mcMallocWsm returned: %d\n", mcRet); |
| break; |
| } |
| |
| /* Open session the TEE Keymaster trustlet */ |
| pSessionHandle->deviceId = DEVICE_ID; |
| mcRet = mcOpenSession(pSessionHandle, |
| &uuid, |
| (uint8_t *) pTci, |
| (uint32_t) sizeof(tciMessage_t)); |
| if (MC_DRV_OK != mcRet) |
| { |
| LOG_E("TEE_Open(): mcOpenSession returned: %d\n", mcRet); |
| break; |
| } |
| |
| } while (false); |
| |
| return pTci; |
| } |
| |
| |
| /** |
| * TEE_Close |
| * |
| * Close session to the TEE Keymaster trustlet |
| * |
| * @param sessionHandle [in] Session handle |
| */ |
| static void TEE_Close( |
| mcSessionHandle_t sessionHandle |
| ){ |
| teeResult_t ret = TEE_ERR_NONE; |
| mcResult_t mcRet; |
| |
| do { |
| |
| /* Close session */ |
| mcRet = mcCloseSession(&sessionHandle); |
| if (MC_DRV_OK != mcRet) |
| { |
| LOG_E("TEE_Close(): mcCloseSession returned: %d\n", mcRet); |
| ret = TEE_ERR_SESSION; |
| break; |
| } |
| |
| /* Close MobiCore device */ |
| mcRet = mcCloseDevice(DEVICE_ID); |
| if (MC_DRV_OK != mcRet) |
| { |
| LOG_E("TEE_Close(): mcCloseDevice returned: %d\n", mcRet); |
| ret = TEE_ERR_MC_DEVICE; |
| } |
| |
| } while (false); |
| } |
| |
| |
| /** |
| * TEE_RSAGenerateKeyPair |
| * |
| * Generates RSA key pair and returns key pair data as wrapped object |
| * |
| * @param keyType [in] Key pair type. RSA or RSACRT |
| * @param keyData [in] Pointer to the key data buffer |
| * @param keyDataLength [in] Key data buffer length |
| * @param keySize [in] Key size |
| * @param exponent [in] Exponent number |
| * @param soLen [out] Key data secure object length |
| */ |
| teeResult_t TEE_RSAGenerateKeyPair( |
| teeRsaKeyPairType_t keyType, |
| uint8_t* keyData, |
| uint32_t keyDataLength, |
| uint32_t keySize, |
| uint32_t exponent, |
| uint32_t* soLen |
| ){ |
| teeResult_t ret = TEE_ERR_NONE; |
| tciMessage_ptr pTci = NULL; |
| mcSessionHandle_t sessionHandle; |
| mcBulkMap_t mapInfo; |
| mcResult_t mcRet; |
| |
| do { |
| |
| /* Open session to the trustlet */ |
| pTci = TEE_Open(&sessionHandle); |
| if (!pTci) { |
| ret = TEE_ERR_MEMORY; |
| break; |
| } |
| |
| /* Map memory to the secure world */ |
| mcRet = mcMap(&sessionHandle, keyData, keyDataLength, &mapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| /* Update TCI buffer */ |
| pTci->command.header.commandId = CMD_ID_TEE_RSA_GEN_KEY_PAIR; |
| pTci->rsagenkey.type = keyType; |
| pTci->rsagenkey.keysize = keySize; |
| pTci->rsagenkey.keydata = (uint32_t)mapInfo.sVirtualAddr; |
| pTci->rsagenkey.keydatalen = keyDataLength; |
| pTci->rsagenkey.exponent = exponent; |
| |
| /* Notify the trustlet */ |
| mcRet = mcNotify(&sessionHandle); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Wait for response from the trustlet */ |
| if (MC_DRV_OK != mcWaitNotification(&sessionHandle, MC_INFINITE_TIMEOUT)) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Unmap memory */ |
| mcRet = mcUnmap(&sessionHandle, keyData, &mapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| if (RET_OK != pTci->response.header.returnCode) |
| { |
| LOG_E("TEE_RSAGenerateKeyPair(): TEE Keymaster trustlet returned: 0x%.8x\n", |
| pTci->response.header.returnCode); |
| ret = TEE_ERR_FAIL; |
| break; |
| } |
| |
| /* Update secure object length */ |
| *soLen = pTci->rsagenkey.solen; |
| |
| } while (false); |
| |
| /* Close session to the trustlet */ |
| TEE_Close(sessionHandle); |
| |
| return ret; |
| } |
| |
| |
| /** |
| * TEE_RSASign |
| * |
| * Signs given plain data and returns signature data |
| * |
| * @param keyData [in] Pointer to key data buffer |
| * @param keyDataLength [in] Key data buffer length |
| * @param plainData [in] Pointer to plain data to be signed |
| * @param plainDataLength [in] Plain data length |
| * @param signatureData [out] Pointer to signature data |
| * @param signatureDataLength [out] Signature data length |
| * @param algorithm [in] RSA signature algorithm |
| */ |
| teeResult_t TEE_RSASign( |
| const uint8_t* keyData, |
| const uint32_t keyDataLength, |
| const uint8_t* plainData, |
| const uint32_t plainDataLength, |
| uint8_t* signatureData, |
| uint32_t* signatureDataLength, |
| teeRsaSigAlg_t algorithm |
| ){ |
| teeResult_t ret = TEE_ERR_NONE; |
| tciMessage_ptr pTci = NULL; |
| mcSessionHandle_t sessionHandle; |
| mcBulkMap_t keyMapInfo; |
| mcBulkMap_t plainMapInfo; |
| mcBulkMap_t signatureMapInfo; |
| mcResult_t mcRet; |
| |
| do { |
| |
| /* Open session to the trustlet */ |
| pTci = TEE_Open(&sessionHandle); |
| if (!pTci) { |
| ret = TEE_ERR_MEMORY; |
| break; |
| } |
| |
| /* Map memory to the secure world */ |
| mcRet = mcMap(&sessionHandle, (void*)keyData, keyDataLength, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcMap(&sessionHandle, (void*)plainData, plainDataLength, &plainMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcMap(&sessionHandle, (void*)signatureData, *signatureDataLength, &signatureMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| /* Update TCI buffer */ |
| pTci->command.header.commandId = CMD_ID_TEE_RSA_SIGN; |
| pTci->rsasign.keydata = (uint32_t)keyMapInfo.sVirtualAddr; |
| pTci->rsasign.keydatalen = keyDataLength; |
| |
| pTci->rsasign.plaindata = (uint32_t)plainMapInfo.sVirtualAddr; |
| pTci->rsasign.plaindatalen = plainDataLength; |
| |
| pTci->rsasign.signaturedata = (uint32_t)signatureMapInfo.sVirtualAddr; |
| pTci->rsasign.signaturedatalen = *signatureDataLength; |
| |
| pTci->rsasign.algorithm = algorithm; |
| |
| /* Notify the trustlet */ |
| mcRet = mcNotify(&sessionHandle); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Wait for response from the trustlet */ |
| if (MC_DRV_OK != mcWaitNotification(&sessionHandle, MC_INFINITE_TIMEOUT)) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Unmap memory */ |
| mcRet = mcUnmap(&sessionHandle, (void*)keyData, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcUnmap(&sessionHandle, (void*)plainData, &plainMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcUnmap(&sessionHandle, (void*)signatureData, &signatureMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| if (RET_OK != pTci->response.header.returnCode) |
| { |
| LOG_E("TEE_RSASign(): TEE Keymaster trustlet returned: 0x%.8x\n", |
| pTci->response.header.returnCode); |
| ret = TEE_ERR_FAIL; |
| break; |
| } |
| |
| /* Retrieve signature data length */ |
| *signatureDataLength = pTci->rsasign.signaturedatalen; |
| |
| } while (false); |
| |
| /* Close session to the trustlet */ |
| TEE_Close(sessionHandle); |
| |
| return ret; |
| } |
| |
| |
| /** |
| * TEE_RSAVerify |
| * |
| * Verifies given data with RSA public key and return status |
| * |
| * @param keyData [in] Pointer to key data buffer |
| * @param keyDataLength [in] Key data buffer length |
| * @param plainData [in] Pointer to plain data to be signed |
| * @param plainDataLength [in] Plain data length |
| * @param signatureData [in] Pointer to signed data |
| * @param signatureData [in] Plain data length |
| * @param algorithm [in] RSA signature algorithm |
| * @param validity [out] Signature validity |
| */ |
| teeResult_t TEE_RSAVerify( |
| const uint8_t* keyData, |
| const uint32_t keyDataLength, |
| const uint8_t* plainData, |
| const uint32_t plainDataLength, |
| const uint8_t* signatureData, |
| const uint32_t signatureDataLength, |
| teeRsaSigAlg_t algorithm, |
| bool *validity |
| ){ |
| teeResult_t ret = TEE_ERR_NONE; |
| tciMessage_ptr pTci = NULL; |
| mcSessionHandle_t sessionHandle; |
| mcBulkMap_t keyMapInfo; |
| mcBulkMap_t plainMapInfo; |
| mcBulkMap_t signatureMapInfo; |
| mcResult_t mcRet; |
| |
| do { |
| |
| /* Open session to the trustlet */ |
| pTci = TEE_Open(&sessionHandle); |
| if (!pTci) { |
| ret = TEE_ERR_MEMORY; |
| break; |
| } |
| |
| /* Map memory to the secure world */ |
| mcRet = mcMap(&sessionHandle, (void*)keyData, keyDataLength, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcMap(&sessionHandle, (void*)plainData, plainDataLength, &plainMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcMap(&sessionHandle, (void*)signatureData, signatureDataLength, &signatureMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| /* Update TCI buffer */ |
| pTci->command.header.commandId = CMD_ID_TEE_RSA_VERIFY; |
| pTci->rsaverify.keydata = (uint32_t)keyMapInfo.sVirtualAddr; |
| pTci->rsaverify.keydatalen = keyDataLength; |
| |
| pTci->rsaverify.plaindata = (uint32_t)plainMapInfo.sVirtualAddr; |
| pTci->rsaverify.plaindatalen = plainDataLength; |
| |
| pTci->rsaverify.signaturedata = (uint32_t)signatureMapInfo.sVirtualAddr; |
| pTci->rsaverify.signaturedatalen = signatureDataLength; |
| |
| pTci->rsaverify.algorithm = algorithm; |
| pTci->rsaverify.validity = false; |
| |
| /* Notify the trustlet */ |
| mcRet = mcNotify(&sessionHandle); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Wait for response from the trustlet */ |
| if (MC_DRV_OK != mcWaitNotification(&sessionHandle, MC_INFINITE_TIMEOUT)) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Unmap memory */ |
| mcRet = mcUnmap(&sessionHandle, (void*)keyData, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcUnmap(&sessionHandle, (void*)plainData, &plainMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcUnmap(&sessionHandle, (void*)signatureData, &signatureMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| if (RET_OK != pTci->response.header.returnCode) |
| { |
| LOG_E("TEE_RSAVerify(): TEE Keymaster trustlet returned: 0x%.8x\n", |
| pTci->response.header.returnCode); |
| ret = TEE_ERR_FAIL; |
| break; |
| } |
| |
| *validity = pTci->rsaverify.validity; |
| |
| } while (false); |
| |
| /* Close session to the trustlet */ |
| TEE_Close(sessionHandle); |
| |
| return ret; |
| } |
| |
| |
| /** |
| * TEE_HMACKeyGenerate |
| * |
| * Generates random key for HMAC calculation and returns key data as wrapped object |
| * (key is encrypted) |
| * |
| * @param keyData [out] Pointer to key data |
| * @param keyDataLength [in] Key data buffer length |
| * @param soLen [out] Key data secure object length |
| */ |
| teeResult_t TEE_HMACKeyGenerate( |
| uint8_t* keyData, |
| uint32_t keyDataLength, |
| uint32_t* soLen |
| ){ |
| teeResult_t ret = TEE_ERR_NONE; |
| tciMessage_ptr pTci = NULL; |
| mcSessionHandle_t sessionHandle; |
| mcBulkMap_t keyMapInfo; |
| mcResult_t mcRet; |
| |
| do { |
| |
| /* Open session to the trustlet */ |
| pTci = TEE_Open(&sessionHandle); |
| if (!pTci) { |
| ret = TEE_ERR_MEMORY; |
| break; |
| } |
| |
| /* Map memory to the secure world */ |
| mcRet = mcMap(&sessionHandle, (void*)keyData, keyDataLength, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| /* Update TCI buffer */ |
| pTci->command.header.commandId = CMD_ID_TEE_HMAC_GEN_KEY; |
| pTci->hmacgenkey.keydata = (uint32_t)keyMapInfo.sVirtualAddr; |
| pTci->hmacgenkey.keydatalen = keyDataLength; |
| |
| /* Notify the trustlet */ |
| mcRet = mcNotify(&sessionHandle); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Wait for response from the trustlet */ |
| if (MC_DRV_OK != mcWaitNotification(&sessionHandle, MC_INFINITE_TIMEOUT)) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Unmap memory */ |
| mcRet = mcUnmap(&sessionHandle, (void*)keyData, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| if (RET_OK != pTci->response.header.returnCode) |
| { |
| LOG_E("TEE_RSAVerify(): TEE Keymaster trustlet returned: 0x%.8x\n", |
| pTci->response.header.returnCode); |
| ret = TEE_ERR_FAIL; |
| } |
| |
| /* Update secure object length */ |
| *soLen = pTci->hmacgenkey.solen; |
| |
| }while (false); |
| |
| /* Close session to the trustlet */ |
| TEE_Close(sessionHandle); |
| |
| return ret; |
| } |
| |
| /** |
| * TEE_HMACSign |
| * |
| * Signs given plain data and returns HMAC signature data |
| * |
| * @param keyData [in] Pointer to key data buffer |
| * @param keyDataLength [in] Key data buffer length |
| * @param plainData [in] Pointer to plain data to be signed |
| * @param plainDataLength [in] Plain data length |
| * @param signatureData [out] Pointer to signature data |
| * @param signatureDataLength [out] Signature data length |
| * @param digest [in] Digest type |
| */ |
| teeResult_t TEE_HMACSign( |
| const uint8_t* keyData, |
| const uint32_t keyDataLength, |
| const uint8_t* plainData, |
| const uint32_t plainDataLength, |
| uint8_t* signatureData, |
| uint32_t* signatureDataLength, |
| teeDigest_t digest |
| ){ |
| teeResult_t ret = TEE_ERR_NONE; |
| tciMessage_ptr pTci = NULL; |
| mcSessionHandle_t sessionHandle; |
| mcBulkMap_t keyMapInfo; |
| mcBulkMap_t plainMapInfo; |
| mcBulkMap_t signatureMapInfo; |
| mcResult_t mcRet; |
| |
| do { |
| |
| /* Open session to the trustlet */ |
| pTci = TEE_Open(&sessionHandle); |
| if (!pTci) { |
| ret = TEE_ERR_MEMORY; |
| break; |
| } |
| |
| /* Map memory to the secure world */ |
| mcRet = mcMap(&sessionHandle, (void*)keyData, keyDataLength, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcMap(&sessionHandle, (void*)plainData, plainDataLength, &plainMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcMap(&sessionHandle, (void*)signatureData, *signatureDataLength, &signatureMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| /* Update TCI buffer */ |
| pTci->command.header.commandId = CMD_ID_TEE_HMAC_SIGN; |
| pTci->hmacsign.keydata = (uint32_t)keyMapInfo.sVirtualAddr; |
| pTci->hmacsign.keydatalen = keyDataLength; |
| |
| pTci->hmacsign.plaindata = (uint32_t)plainMapInfo.sVirtualAddr; |
| pTci->hmacsign.plaindatalen = plainDataLength; |
| |
| pTci->hmacsign.signaturedata = (uint32_t)signatureMapInfo.sVirtualAddr; |
| pTci->hmacsign.signaturedatalen = *signatureDataLength; |
| |
| pTci->hmacsign.digest = digest; |
| |
| /* Notify the trustlet */ |
| mcRet = mcNotify(&sessionHandle); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Wait for response from the trustlet */ |
| if (MC_DRV_OK != mcWaitNotification(&sessionHandle, MC_INFINITE_TIMEOUT)) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Unmap memory */ |
| mcRet = mcUnmap(&sessionHandle, (void*)keyData, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcUnmap(&sessionHandle, (void*)plainData, &plainMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcUnmap(&sessionHandle, (void*)signatureData, &signatureMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| if (RET_OK != pTci->response.header.returnCode) |
| { |
| LOG_E("TEE_HMACSign(): TEE Keymaster trustlet returned: 0x%.8x\n", |
| pTci->response.header.returnCode); |
| ret = TEE_ERR_FAIL; |
| break; |
| } |
| |
| /* Retrieve signature data length */ |
| *signatureDataLength = pTci->hmacsign.signaturedatalen; |
| |
| } while (false); |
| |
| /* Close session to the trustlet */ |
| TEE_Close(sessionHandle); |
| |
| return ret; |
| } |
| |
| |
| /** |
| * TEE_HMACVerify |
| * |
| * Verifies given data HMAC key data and return status |
| * |
| * @param plainData [in] Pointer to plain data to be signed |
| * @param plainDataLength [in] Plain data length |
| * @param signatureData [in] Pointer to signed data |
| * @param signatureData [in] Plain data length |
| * @param digest [in] Digest type |
| * @param validity [out] Signature validity |
| */ |
| teeResult_t TEE_HMACVerify( |
| const uint8_t* keyData, |
| const uint32_t keyDataLength, |
| const uint8_t* plainData, |
| const uint32_t plainDataLength, |
| const uint8_t* signatureData, |
| const uint32_t signatureDataLength, |
| teeDigest_t digest, |
| bool *validity |
| ){ |
| teeResult_t ret = TEE_ERR_NONE; |
| tciMessage_ptr pTci = NULL; |
| mcSessionHandle_t sessionHandle; |
| mcBulkMap_t keyMapInfo; |
| mcBulkMap_t plainMapInfo; |
| mcBulkMap_t signatureMapInfo; |
| mcResult_t mcRet; |
| |
| do { |
| |
| /* Open session to the trustlet */ |
| pTci = TEE_Open(&sessionHandle); |
| if (!pTci) { |
| ret = TEE_ERR_MEMORY; |
| break; |
| } |
| |
| /* Map memory to the secure world */ |
| mcRet = mcMap(&sessionHandle, (void*)keyData, keyDataLength, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcMap(&sessionHandle, (void*)plainData, plainDataLength, &plainMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcMap(&sessionHandle, (void*)signatureData, signatureDataLength, &signatureMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| /* Update TCI buffer */ |
| pTci->command.header.commandId = CMD_ID_TEE_HMAC_VERIFY; |
| pTci->hmacverify.keydata = (uint32_t)keyMapInfo.sVirtualAddr; |
| pTci->hmacverify.keydatalen = keyDataLength; |
| |
| pTci->hmacverify.plaindata = (uint32_t)plainMapInfo.sVirtualAddr; |
| pTci->hmacverify.plaindatalen = plainDataLength; |
| |
| pTci->hmacverify.signaturedata = (uint32_t)signatureMapInfo.sVirtualAddr; |
| pTci->hmacverify.signaturedatalen = signatureDataLength; |
| |
| pTci->hmacverify.digest = digest; |
| pTci->hmacverify.validity = false; |
| |
| /* Notify the trustlet */ |
| mcRet = mcNotify(&sessionHandle); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Wait for response from the trustlet */ |
| if (MC_DRV_OK != mcWaitNotification(&sessionHandle, MC_INFINITE_TIMEOUT)) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Unmap memory */ |
| mcRet = mcUnmap(&sessionHandle, (void*)keyData, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcUnmap(&sessionHandle, (void*)plainData, &plainMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcUnmap(&sessionHandle, (void*)signatureData, &signatureMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| if (RET_OK != pTci->response.header.returnCode) |
| { |
| LOG_E("TEE_HMACVerify(): TEE Keymaster trustlet returned: 0x%.8x\n", |
| pTci->response.header.returnCode); |
| ret = TEE_ERR_FAIL; |
| break; |
| } |
| |
| *validity = pTci->hmacverify.validity; |
| |
| } while (false); |
| |
| /* Close session to the trustlet */ |
| TEE_Close(sessionHandle); |
| |
| return ret; |
| } |
| |
| |
| /** |
| * TEE_KeyImport |
| * |
| * Imports key data and returns key data as secure object |
| * |
| * Key data needs to be in the following format |
| * |
| * RSA key data: |
| * |--key metadata--|--public modulus--|--public exponent--|--private exponent--| |
| * |
| * RSA CRT key data: |
| * |--key metadata--|--public modulus--|--public exponent--|--P--|--Q--|--DP--|--DQ--|--Qinv--| |
| * |
| * Where: |
| * P: secret prime factor |
| * Q: secret prime factor |
| * DP: d mod (p-1) |
| * DQ: d mod (q-1) |
| * Qinv: q^-1 mod p |
| * |
| * @param keyData [in] Pointer to key data |
| * @param keyDataLength [in] Key data length |
| * @param soData [out] Pointer to wrapped key data |
| * @param soDataLength [out] Wrapped key data length |
| */ |
| teeResult_t TEE_KeyImport( |
| const uint8_t* keyData, |
| const uint32_t keyDataLength, |
| uint8_t* soData, |
| uint32_t* soDataLength |
| ){ |
| teeResult_t ret = TEE_ERR_NONE; |
| tciMessage_ptr pTci = NULL; |
| mcSessionHandle_t sessionHandle; |
| mcBulkMap_t keyMapInfo; |
| mcBulkMap_t soMapInfo; |
| mcResult_t mcRet; |
| |
| do { |
| |
| /* Open session to the trustlet */ |
| pTci = TEE_Open(&sessionHandle); |
| if (!pTci) { |
| ret = TEE_ERR_MEMORY; |
| break; |
| } |
| |
| /* Map memory to the secure world */ |
| mcRet = mcMap(&sessionHandle, (void*)keyData, keyDataLength, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcMap(&sessionHandle, (void*)soData, *soDataLength, &soMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| /* Update TCI buffer */ |
| pTci->command.header.commandId = CMD_ID_TEE_KEY_IMPORT; |
| pTci->keyimport.keydata = (uint32_t)keyMapInfo.sVirtualAddr; |
| pTci->keyimport.keydatalen = keyDataLength; |
| pTci->keyimport.sodata = (uint32_t)soMapInfo.sVirtualAddr; |
| pTci->keyimport.sodatalen = *soDataLength; |
| |
| /* Notify the trustlet */ |
| mcRet = mcNotify(&sessionHandle); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Wait for response from the trustlet */ |
| if (MC_DRV_OK != mcWaitNotification(&sessionHandle, MC_INFINITE_TIMEOUT)) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Unmap memory */ |
| mcRet = mcUnmap(&sessionHandle, (void*)keyData, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcUnmap(&sessionHandle, (void*)soData, &soMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| if (RET_OK != pTci->response.header.returnCode) |
| { |
| LOG_E("TEE_KeyWrap(): TEE Keymaster trustlet returned: 0x%.8x\n", |
| pTci->response.header.returnCode); |
| ret = TEE_ERR_FAIL; |
| break; |
| } |
| |
| /* Update secure object length */ |
| *soDataLength = pTci->keyimport.sodatalen; |
| |
| } while (false); |
| |
| /* Close session to the trustlet */ |
| TEE_Close(sessionHandle); |
| |
| return ret; |
| } |
| |
| |
| /** * TEE_GetPubKey |
| * |
| * Retrieves public key daya (modulus and exponent) from wrapped key data |
| * |
| * @param keyData [in] Pointer to key data |
| * @param keyDataLength [in] Key data length |
| * @param modulus [out] Pointer to public key modulus data |
| * @param modulusLength [out] Modulus data length |
| * @param exponent [out] Pointer to public key exponent data |
| * @param exponentLength [out] Exponent data length |
| */ |
| teeResult_t TEE_GetPubKey( |
| const uint8_t* keyData, |
| const uint32_t keyDataLength, |
| uint8_t* modulus, |
| uint32_t* modulusLength, |
| uint8_t* exponent, |
| uint32_t* exponentLength |
| ){ |
| teeResult_t ret = TEE_ERR_NONE; |
| tciMessage_ptr pTci = NULL; |
| mcSessionHandle_t sessionHandle; |
| mcBulkMap_t keyMapInfo; |
| mcBulkMap_t modMapInfo; |
| mcBulkMap_t expMapInfo; |
| mcResult_t mcRet; |
| |
| do { |
| |
| /* Open session to the trustlet */ |
| pTci = TEE_Open(&sessionHandle); |
| if (!pTci) { |
| ret = TEE_ERR_MEMORY; |
| break; |
| } |
| |
| /* Map memory to the secure world */ |
| mcRet = mcMap(&sessionHandle, (void*)keyData, keyDataLength, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcMap(&sessionHandle, (void*)modulus, *modulusLength, &modMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcMap(&sessionHandle, (void*)exponent, *exponentLength, &expMapInfo); |
| if (MC_DRV_OK != mcRet) { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| /* Update TCI buffer */ |
| pTci->command.header.commandId = CMD_ID_TEE_GET_PUB_KEY; |
| pTci->getpubkey.keydata = (uint32_t)keyMapInfo.sVirtualAddr; |
| pTci->getpubkey.keydatalen = keyDataLength; |
| pTci->getpubkey.modulus = (uint32_t)modMapInfo.sVirtualAddr; |
| pTci->getpubkey.moduluslen = *modulusLength; |
| pTci->getpubkey.exponent = (uint32_t)expMapInfo.sVirtualAddr; |
| pTci->getpubkey.exponentlen = *exponentLength; |
| |
| /* Notify the trustlet */ |
| mcRet = mcNotify(&sessionHandle); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Wait for response from the trustlet */ |
| if (MC_DRV_OK != mcWaitNotification(&sessionHandle, MC_INFINITE_TIMEOUT)) |
| { |
| ret = TEE_ERR_NOTIFICATION; |
| break; |
| } |
| |
| /* Unmap memory */ |
| mcRet = mcUnmap(&sessionHandle, (void*)keyData, &keyMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcUnmap(&sessionHandle, (void*)modulus, &modMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| mcRet = mcUnmap(&sessionHandle, (void*)exponent, &expMapInfo); |
| if (MC_DRV_OK != mcRet) |
| { |
| ret = TEE_ERR_MAP; |
| break; |
| } |
| |
| if (RET_OK != pTci->response.header.returnCode) |
| { |
| LOG_E("TEE_GetPubKey(): TEE Keymaster trustlet returned: 0x%.8x\n", |
| pTci->response.header.returnCode); |
| ret = TEE_ERR_FAIL; |
| break; |
| } |
| |
| /* Update modulus and exponent lengths */ |
| *modulusLength = pTci->getpubkey.moduluslen; |
| *exponentLength = pTci->getpubkey.exponentlen; |
| |
| } while (false); |
| |
| /* Close session to the trustlet */ |
| TEE_Close(sessionHandle); |
| |
| return ret; |
| } |
