Azure IoT common library
Dependents: STM32F746_iothub_client_sample_mqtt f767zi_mqtt iothub_client_sample_amqp iothub_client_sample_http ... more
hmacsha256.c@19:2e0811512ceb, 2017-01-28 (annotated)
- Committer:
- AzureIoTClient
- Date:
- Sat Jan 28 09:35:22 2017 -0800
- Revision:
- 19:2e0811512ceb
- Parent:
- 0:fa2de1b79154
1.1.6
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
Azure.IoT Build | 0:fa2de1b79154 | 1 | // Copyright (c) Microsoft. All rights reserved. |
Azure.IoT Build | 0:fa2de1b79154 | 2 | // Licensed under the MIT license. See LICENSE file in the project root for full license information. |
Azure.IoT Build | 0:fa2de1b79154 | 3 | |
AzureIoTClient | 19:2e0811512ceb | 4 | #include <stddef.h> |
Azure.IoT Build | 0:fa2de1b79154 | 5 | #include "azure_c_shared_utility/hmacsha256.h" |
Azure.IoT Build | 0:fa2de1b79154 | 6 | #include "azure_c_shared_utility/hmac.h" |
AzureIoTClient | 19:2e0811512ceb | 7 | #include "azure_c_shared_utility/buffer_.h" |
Azure.IoT Build | 0:fa2de1b79154 | 8 | |
Azure.IoT Build | 0:fa2de1b79154 | 9 | HMACSHA256_RESULT HMACSHA256_ComputeHash(const unsigned char* key, size_t keyLen, const unsigned char* payload, size_t payloadLen, BUFFER_HANDLE hash) |
Azure.IoT Build | 0:fa2de1b79154 | 10 | { |
Azure.IoT Build | 0:fa2de1b79154 | 11 | HMACSHA256_RESULT result; |
Azure.IoT Build | 0:fa2de1b79154 | 12 | |
Azure.IoT Build | 0:fa2de1b79154 | 13 | if (key == NULL || |
Azure.IoT Build | 0:fa2de1b79154 | 14 | keyLen == 0 || |
Azure.IoT Build | 0:fa2de1b79154 | 15 | payload == NULL || |
Azure.IoT Build | 0:fa2de1b79154 | 16 | payloadLen == 0 || |
Azure.IoT Build | 0:fa2de1b79154 | 17 | hash == NULL) |
Azure.IoT Build | 0:fa2de1b79154 | 18 | { |
Azure.IoT Build | 0:fa2de1b79154 | 19 | result = HMACSHA256_INVALID_ARG; |
Azure.IoT Build | 0:fa2de1b79154 | 20 | } |
Azure.IoT Build | 0:fa2de1b79154 | 21 | else |
Azure.IoT Build | 0:fa2de1b79154 | 22 | { |
Azure.IoT Build | 0:fa2de1b79154 | 23 | if ((BUFFER_enlarge(hash, 32) != 0) || |
Azure.IoT Build | 0:fa2de1b79154 | 24 | (hmac(SHA256, payload, (int)payloadLen, key, (int)keyLen, BUFFER_u_char(hash) ) != 0)) |
Azure.IoT Build | 0:fa2de1b79154 | 25 | { |
Azure.IoT Build | 0:fa2de1b79154 | 26 | result = HMACSHA256_ERROR; |
Azure.IoT Build | 0:fa2de1b79154 | 27 | } |
Azure.IoT Build | 0:fa2de1b79154 | 28 | else |
Azure.IoT Build | 0:fa2de1b79154 | 29 | { |
Azure.IoT Build | 0:fa2de1b79154 | 30 | result = HMACSHA256_OK; |
Azure.IoT Build | 0:fa2de1b79154 | 31 | } |
Azure.IoT Build | 0:fa2de1b79154 | 32 | } |
Azure.IoT Build | 0:fa2de1b79154 | 33 | |
Azure.IoT Build | 0:fa2de1b79154 | 34 | return result; |
Azure.IoT Build | 0:fa2de1b79154 | 35 | } |