# Function ring::hmac::verify [−] [src]

    pub fn verify(
        key: &VerificationKey,
        data: &[u8],
        signature: &[u8]
    ) -> Result<(), Unspecified>

Calculates the HMAC of `data` using the key `key`, and verifies whether the resultant value equals `signature`, in one step.

The verification will be done in constant time to prevent timing attacks.

C analog: `HMAC_Init` + `HMAC_Update` + `HMAC_Final` + `CRYPTO_memcmp`

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