nandi.uk
Fork of daniellemaywood.uk/gleam — Wasm codegen work
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1// SPDX-License-Identifier: Apache-2.0
2// SPDX-FileCopyrightText: 2024 The Gleam contributors
3
4use thiserror::Error;
5
6pub fn encrypt_with_passphrase(
7 message: &[u8],
8 passphrase: &str,
9) -> Result<String, age::EncryptError> {
10 let passphrase = age::secrecy::SecretString::from(passphrase);
11 let recipient = age::scrypt::Recipient::new(passphrase);
12
13 let encrypted = age::encrypt_and_armor(&recipient, message)?;
14
15 Ok(encrypted)
16}
17
18// the function `decrypt_with_passphrase` has two possible failure cases:
19// - when decryption fails
20// - when the data was decrypted succesfully but the result is not UTF-8 valid
21#[derive(Error, Debug)]
22pub enum DecryptError {
23 #[error("unable to decrypt message: {0}")]
24 Decrypt(#[from] age::DecryptError),
25 #[error("decrypted message is not UTF-8 valid: {0}")]
26 Io(#[from] std::string::FromUtf8Error),
27}
28
29pub fn decrypt_with_passphrase(
30 encrypted_message: &[u8],
31 passphrase: &str,
32) -> Result<String, DecryptError> {
33 let passphrase = age::secrecy::SecretString::from(passphrase);
34 let identity = age::scrypt::Identity::new(passphrase);
35
36 let decrypted = age::decrypt(&identity, encrypted_message)?;
37 let decrypted = String::from_utf8(decrypted)?;
38
39 Ok(decrypted)
40}