Module utils

Utility Functions for Cryptographic Operations

This module provides common utility functions used throughout the RusCrypt library, including encoding/decoding, padding, and character manipulation functions.

Features

• Encoding: Base64 and hexadecimal encoding/decoding
• Padding: PKCS#7 padding for block ciphers
• Character operations: Caesar cipher character shifting

Examples

use ruscrypt::utils::{to_base64, from_base64, to_hex, from_hex};
 
let data = b"Hello, World!";
let base64 = to_base64(data);
let decoded = from_base64(&base64).unwrap();
assert_eq!(data, &decoded[..]);

Functions

from_base64

Decodes a Base64 string to binary data.

from_hex

Converts a hexadecimal string to binary data.

pad_data

Pads data to 16-byte blocks using PKCS#7 padding.

pad_data_to_size

Pads data to the specified block size using PKCS#7 padding.

remove_padding

Removes PKCS#7 padding from padded data.

shift_char

Shifts a single character by the specified amount for Caesar cipher.

to_base64

Encodes binary data to a Base64 string.

to_hex

Converts binary data to a lowercase hexadecimal string.