# Struct openssl::envelope::Open [−] [src]

    pub struct Open { /* fields omitted */ }

Represents an EVP_Open context.

## Implementations

### `impl Open` [src]

#### `pub fn new<T>(
cipher: Cipher,
priv_key: &PKeyRef<T>,
iv: Option<&[u8]>,
encrypted_key: &[u8]
) -> Result<Open, ErrorStack> where
T: HasPrivate,` [src]

Creates a new `Open`.

#### `pub fn update(
&mut self,
input: &[u8],
output: &mut [u8]
) -> Result<usize, ErrorStack>` [src]

Feeds data from `input` through the cipher, writing decrypted bytes into `output`.

The number of bytes written to `output` is returned. Note that this may not be equal to the length of `input`.

# Panics

Panics if `output.len() < input.len() + block_size` where `block_size` is the block size of the cipher (see `Cipher::block_size`), or if `output.len() > c_int::max_value()`.

#### `pub fn finalize(&mut self, output: &mut [u8]) -> Result<usize, ErrorStack>` [src]

Finishes the decryption process, writing any remaining data to `output`.

The number of bytes written to `output` is returned.

`update` should not be called after this method.

# Panics

Panics if `output` is less than the cipher’s block size.

## Trait Implementations

### `impl Drop for Open` [src]

#### `fn drop(&mut self)` [src]

Executes the destructor for this type. Read more

## Auto Trait Implementations

### `impl RefUnwindSafe for Open`

### `impl !Send for Open`

### `impl !Sync for Open`

### `impl Unpin for Open`

### `impl UnwindSafe for Open`

## Blanket Implementations

### `impl<T> Any for T where
T: 'static + ?Sized,` [src]

#### `pub fn type_id(&self) -> TypeId` [src]

Gets the `TypeId` of `self`. Read more

### `impl<T> Borrow<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow(&self) -> &T` [src]

Immutably borrows from an owned value. Read more

### `impl<T> BorrowMut<T> for T where
T: ?Sized,` [src]

#### `pub fn borrow_mut(&mut self) -> &mut T` [src]

Mutably borrows from an owned value. Read more

### `impl<T> From<T> for T` [src]

#### `pub fn from(t: T) -> T` [src]

Performs the conversion.

### `impl<T, U> Into<U> for T where
U: From<T>,` [src]

#### `pub fn into(self) -> U` [src]

Performs the conversion.

### `impl<T, U> TryFrom<U> for T where
U: Into<T>,` [src]

#### `type Error = Infallible`

The type returned in the event of a conversion error.

#### `pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>` [src]

Performs the conversion.

### `impl<T, U> TryInto<U> for T where
U: TryFrom<T>,` [src]

#### `type Error = <U as TryFrom<T>>::Error`

The type returned in the event of a conversion error.

#### `pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>` [src]

Performs the conversion.