39 lines
1.3 KiB
Rust
39 lines
1.3 KiB
Rust
use chacha20_poly1305_stream::{ChaCha20Poly1305StreamDecryptor, ChaCha20Poly1305StreamEncryptor};
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fn main() {
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encrypt();
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decrypt();
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}
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fn encrypt() {
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// IMPORTANT! key and nonce SHOULD generate by random
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let key = [0u8; 32];
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let nonce = [0; 12];
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let mut encryptor = ChaCha20Poly1305StreamEncryptor::new(&key, &nonce).unwrap();
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let mut ciphertext = vec![];
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ciphertext.extend_from_slice(&encryptor.update(b"Hello "));
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ciphertext.extend_from_slice(&encryptor.update(b" World"));
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ciphertext.extend_from_slice(&encryptor.update(b"!"));
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let (last_block, tag) = encryptor.finalize();
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ciphertext.extend_from_slice(&last_block);
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ciphertext.extend_from_slice(&tag);
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println!("Ciphertext: {}", hex::encode(&ciphertext));
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}
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fn decrypt() {
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// IMPORTANT! key and nonce SHOULD generate by random
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let key = [0u8; 32];
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let nonce = [0; 12];
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let cipher_text = hex::decode("d7628bd23a71182df7c8fb1852d3dc42b88a61e2fce340d9c5b323884d").unwrap();
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let mut decryptor = ChaCha20Poly1305StreamDecryptor::new(&key, &nonce).unwrap();
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let mut plaintext = decryptor.update(&cipher_text);
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let last_block = decryptor.finalize().unwrap();
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plaintext.extend_from_slice(&last_block);
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println!("Plaintext : {}", String::from_utf8_lossy(&plaintext));
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} |