Azure IoT common library
Fork of azure_c_shared_utility by
hmacsha256.c
- Committer:
- wiggly
- Date:
- 2017-08-24
- Revision:
- 34:651c23af382c
- Parent:
- 19:2e0811512ceb
File content as of revision 34:651c23af382c:
// Copyright (c) Microsoft. All rights reserved. // Licensed under the MIT license. See LICENSE file in the project root for full license information. #include <stddef.h> #include "azure_c_shared_utility/hmacsha256.h" #include "azure_c_shared_utility/hmac.h" #include "azure_c_shared_utility/buffer_.h" HMACSHA256_RESULT HMACSHA256_ComputeHash(const unsigned char* key, size_t keyLen, const unsigned char* payload, size_t payloadLen, BUFFER_HANDLE hash) { HMACSHA256_RESULT result; if (key == NULL || keyLen == 0 || payload == NULL || payloadLen == 0 || hash == NULL) { result = HMACSHA256_INVALID_ARG; } else { if ((BUFFER_enlarge(hash, 32) != 0) || (hmac(SHA256, payload, (int)payloadLen, key, (int)keyLen, BUFFER_u_char(hash) ) != 0)) { result = HMACSHA256_ERROR; } else { result = HMACSHA256_OK; } } return result; }