Struct EncryptParams 

pub struct EncryptParams {

    pub version: i64,
    pub revision: i64,
    pub permissions: u32,
    pub cipher: Cipher,
    pub embedded_cipher: Option<Cipher>,
    pub string_cipher: Cipher,
    pub key_len: usize,
    pub encrypt_metadata: bool,
    pub o: Box<[u8]>,
    pub u: Box<[u8]>,
    pub oe: Box<[u8]>,
    pub ue: Box<[u8]>,
    pub perms: Box<[u8]>,
}

The /Encrypt dictionary as a record of what the file said.

Nothing here is validated against a password yet; cipher and key_len are the one derived pair, because resolving them is where a malformed dictionary is rejected.

Fields

version: i64

/V, the algorithm version. Default 0.

revision: i64

/R, the handler revision. Default 0.

permissions: u32

/P, the permission flags, as the unsigned word they are compared as. Default 0xFFFF_FFFF.

cipher: Cipher

The cipher /V, /CF and /CFM resolve to.

This is the stream class’s cipher (/StmF). See string_cipher.

embedded_cipher: Option<Cipher>

The cipher /EFF resolves to when it differs from Self::cipher (ISO 32000-1 §7.6.5 table 20), and None when the embedded class uses the stream cipher — which table 20 makes the default.

string_cipher: Cipher

[oracle-bug] The cipher the string class (/StrF) resolves to, independently of /StmF.

§7.6.5 defines /StmF and /StrF as two independent entries, each defaulting to Identity, and says nothing forbidding them from differing. So /StmF /StdCF /StrF /StdCF2 opens even when the two /CF entries are identical, and so does a V≥4 document with neither entry present, which is two Identity defaults.

Only the two values §7.6.5 makes observable at this seam are carried: a class is either the file’s cipher or Identity. A document naming two different non-Identity filters would need two keys, which no corpus file does and which this record deliberately does not model — such a file resolves both classes to the stream filter’s cipher.

key_len: usize

The file encryption key length in bytes, 0 to 32.

encrypt_metadata: bool

/EncryptMetadata. Default true.

o: Box<[u8]>

/O, the owner password entry.

u: Box<[u8]>

/U, the user password entry.

oe: Box<[u8]>

/OE, the owner encrypted file key (revision 5 and up).

ue: Box<[u8]>

/UE, the user encrypted file key (revision 5 and up).

perms: Box<[u8]>

/Perms, the encrypted permission block (revision 5 and up).

Trait Implementations

impl Clone for EncryptParams

fn clone(&self) -> EncryptParams

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for EncryptParams

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.