Syntax
crypto_evp_hmac( digestname, key, buffer var, digest var )
Returns#
Returns 1 on success or 0 if an invalid or unsupported “digestname” is specified.
Parameters#
| Parameter | Description |
|---|---|
digestname |
an OpenSSL digest identifier, such as “sha256” or “md5”. |
key |
The key to use for the HMAC calculation. |
buffer |
The data that will be processed. |
digest |
[output] The result of the HMAC function. |