Computes the HMAC for a string.
The hexadecimal string returned will be in lower case.
| key |
the key to use in the HMAC |
| str |
the string to compute the HMAC for |
| length |
the length of the string, or -1 if the string is nul-terminated |
| digest_type |
a ChecksumType to use for the HMAC |
| key_len |
the length of the key |
|
the HMAC as a hexadecimal string. The returned string should be freed with g_free when done using it. |