fun createDecryptCipher(iv: ByteArray): Cipher (source)
Create a cipher initialized for decrypting data with the managed key.
This "low-level" method is useful when a cryptographic context is needed to integrate with
other APIs, such as the FingerprintManager.
NOTE: The caller is responsible for associating certain encryption factors, such as the initialization vector and/or additional authentication data (AAD), with the stored ciphertext or decryption will fail.
iv - The initialization vector/nonce to decrypt with
InvalidKeyException - If the key is not found, or is not a SecretKey
IllegalArgumentException - If iv is null or invalid (e.g., not 12 bytes in length)
Return
The Cipher, initialized and ready to decrypt data with.