mbedtls_poly1305_finish() function

The Poly1305 context to use for the Poly1305 operation. This must be initialized and bound to a key.

The buffer to where the MAC is written. This must be a writable buffer of length \c 16 Bytes.

This function initializes the specified Poly1305 context. It must be the first API called before using the context. It is usually followed by a call to \c mbedtls_poly1305_starts(), then one or more calls to \c mbedtls_poly1305_update(), then one call to \c mbedtls_poly1305_finish(), then finally \c mbedtls_poly1305_free().

This function releases and clears the specified Poly1305 context.

This function sets the one-time authentication key. \warning The key must be unique and unpredictable for each invocation of Poly1305.

This functions feeds an input buffer into an ongoing Poly1305 computation. It is called between \c mbedtls_cipher_poly1305_starts() and \c mbedtls_cipher_poly1305_finish(). It can be called repeatedly to process a stream of data.