INNER CODE UNIT · Swift

decrypt

jedisct1/swift-sodium · Sources/Sodium/Aead.swift:77

    func decrypt(nonceAndAuthenticatedCipherText: Bytes, secretKey: Key, additionalData: Bytes? = nil) -> Bytes? {
        guard nonceAndAuthenticatedCipherText.count >= ABytes + NonceBytes else { return nil }

        let nonce = nonceAndAuthenticatedCipherText[..<NonceBytes].bytes as Nonce
        let authenticatedCipherText = nonceAndAuthenticatedCipherText[NonceBytes...].bytes

        return decrypt(authenticatedCipherText: authenticatedCipherText, secretKey: secretKey, nonce: nonce, additionalData: additionalData)
    }

    /**
     Decrypts a message with a shared secret key.

     - Parameter authenticatedCipherText: A `Bytes` object containing authenticated ciphertext.
     - Parameter secretKey: The shared secret key.
     - Parameter additionalData: Must be used same `Bytes` that was used to encrypt, if `Bytes` deferred will return nil

     - Returns: The decrypted message.
     */

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