Function openssl::aes::unwrap_key

pub fn unwrap_key(
    key: &AesKey, 
    iv: Option<[u8; 8]>, 
    out: &mut [u8], 
    in_: &[u8]
) -> Result<usize, KeyError>

Unwrap a key, according to RFC 3394

• key: The key-encrypting-key to decrypt the wrapped key. Must be a decrypting key
• iv: The same IV used for wrapping the key
• out: The buffer to write the unwrapped key to
• in_: The input ciphertext

Returns the number of bytes written into out

Panics

Panics if either out or in_ do not have sizes that are a multiple of 8, or if in is not 8 bytes longer than in_