Struct ContentDecryptor 

pub struct ContentDecryptor<'a> { /* private fields */ }

Incremental decryption of one file’s content, fed by the caller.

Formats whose content is a single AEAD message (v1, v2) report ContentDecryptor::chunk_len None: feed the entire content in one ContentDecryptor::decrypt_chunk call with is_last = true. Streaming formats report Some(n): feed n-byte pieces, the final one shorter or equal, with is_last on the final piece.

Implementations

impl ContentDecryptor<'_>

pub fn chunk_len(&self) -> Option<usize>

Ciphertext bytes to feed per ContentDecryptor::decrypt_chunk call, or None when the whole content must be fed at once.

pub fn decrypt_chunk( &mut self, ciphertext: &[u8], is_last: bool, ) -> Result<SecureBytes, FileError>

Decrypts the next piece of content ciphertext. is_last marks that no more bytes follow.

pub fn finished(&self) -> bool

True once the final piece has been decrypted. A content stream that ends without this being true was truncated.