Decrypt given data previously encoded with aes-256-cbc-hmac-sha1 cipher algo. AES-256-CBC combined with HMAC-SHA1 for integrity protection, ensuring authenticated encryption. Designed to mitigate padding oracle attacks by authenticating ciphertext before decryption. Secure, but SHA-1 is considered weak for modern cryptographic use, making SHA-256 variants preferable. Our decryption process assumes the IV string is prepended in the encoded string during the encryption process. You can not decrypt and get the correct results if the IV or passphrase mismatch occurs between encryption and decryption process.