INNER CODE UNIT · Swift

tag

jedisct1/swift-sodium · Sources/Sodium/Auth.swift:18

    func tag(message: Bytes, secretKey: SecretKey) -> Bytes? {
        guard secretKey.count == KeyBytes else { return nil }

        var tag = [UInt8](count: Bytes)
        guard crypto_auth(
            &tag,
            message, UInt64(message.count),
            secretKey
        ).exitCode == .SUCCESS else { return nil }

        return tag
    }

    /**
     Verifies that an authentication tag is valid for a message and a key

     - Parameter message: The message to verify.
     - Parameter secretKey: The key required to create and verify messages.

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