Module utils 

Utility functions and convenience wrappers for common cryptographic operations.

Structs

EncryptedAndSigned

Encrypt and sign a message (encrypt-then-sign pattern).

EncryptedMessage

Encrypted message with metadata.

SignedMessage

Signed message with signature.

Enums

UtilError

Errors for utility operations.

Functions

decrypt_file

Decrypt a file.

encrypt_file

Encrypt a file.

generate_and_save_key

Generate a random key and save it to a file (for testing/development).

load_key

Load a key from a file.

Type Aliases

UtilResult

Result type for utility operations.