A simple CyaSSL-based HMAC-MD5 implementation. Licensed under GPL v2.
Dependents: RFrec_full RFtrans_full
The output will be base64-encoded, with trailing "==", like this:
j62o/jZsAZD9i9m+32lIuQ==
Example
#include "mbed.h" #include "hmac_md5.h" Serial pc(USBTX, USBRX); // tx, rx void main(void) { const char * key = "MySecretKey"; const char * text = "message to be signed"; char output[26]; HMAC_MD5(key, text, output); printf("result = %s\n", output); while(true){} }
hmac_md5.cpp
- Committer:
- igrokhotkov
- Date:
- 2013-02-06
- Revision:
- 0:83f3dcfa5c8f
File content as of revision 0:83f3dcfa5c8f:
#include "hmac_md5.h" #include "hmac.h" #include "coding.h" void HMAC_MD5(const char * szKey, const char * szText, char * szOutput) { Hmac hmac; char hmacOutput[MD5_DIGEST_SIZE + 1]; HmacSetKey(&hmac, MD5, (const byte *) szKey, strlen(szKey)); HmacUpdate(&hmac, (const byte *) szText, strlen(szText)); HmacFinal(&hmac, (byte *) hmacOutput); int encodedLength = 25; Base64_Encode((const byte *) hmacOutput, MD5_DIGEST_SIZE, (byte *) szOutput, (word32*) &encodedLength); szOutput[encodedLength] = 0; }