# std.crypto.cipher

## Function Description

The std.crypto.cipher package provides common interfaces for symmetric encryption and decryption.

## API List

### Interfaces

|               Interface Name               |                Function                |
| ----------------------------------------- | ------------------------------------- |
| [BlockCipher](./cipher_package_api/cipher_package_interfaces.md#interface-blockcipher) | This interface is the common interface for block encryption/decryption algorithms. |