| 1 | /*
|
| 2 | * Copyright (c) 2020-2023, Stalwart Labs Ltd.
|
| 3 | *
|
| 4 | * Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
|
| 5 | * https://www.apache.org/licenses/LICENSE-2.0> or the MIT license
|
| 6 | * <LICENSE-MIT or https://opensource.org/licenses/MIT>, at your
|
| 7 | * option. This file may not be copied, modified, or distributed
|
| 8 | * except according to those terms.
|
| 9 | */
|
| 10 |
|
| 11 | use mail_auth::{
|
| 12 | common::{
|
| 13 | crypto::RsaKey,
|
| 14 | crypto::{Ed25519Key, Sha256},
|
| 15 | headers::HeaderWriter,
|
| 16 | },
|
| 17 | dkim::DkimSigner,
|
| 18 | };
|
| 19 | use mail_parser::decoders::base64::base64_decode;
|
| 20 |
|
| 21 | const RSA_PRIVATE_KEY: &str = r#"-----BEGIN RSA PRIVATE KEY-----
|
| 22 | MIICXwIBAAKBgQDwIRP/UC3SBsEmGqZ9ZJW3/DkMoGeLnQg1fWn7/zYtIxN2SnFC
|
| 23 | jxOCKG9v3b4jYfcTNh5ijSsq631uBItLa7od+v/RtdC2UzJ1lWT947qR+Rcac2gb
|
| 24 | to/NMqJ0fzfVjH4OuKhitdY9tf6mcwGjaNBcWToIMmPSPDdQPNUYckcQ2QIDAQAB
|
| 25 | AoGBALmn+XwWk7akvkUlqb+dOxyLB9i5VBVfje89Teolwc9YJT36BGN/l4e0l6QX
|
| 26 | /1//6DWUTB3KI6wFcm7TWJcxbS0tcKZX7FsJvUz1SbQnkS54DJck1EZO/BLa5ckJ
|
| 27 | gAYIaqlA9C0ZwM6i58lLlPadX/rtHb7pWzeNcZHjKrjM461ZAkEA+itss2nRlmyO
|
| 28 | n1/5yDyCluST4dQfO8kAB3toSEVc7DeFeDhnC1mZdjASZNvdHS4gbLIA1hUGEF9m
|
| 29 | 3hKsGUMMPwJBAPW5v/U+AWTADFCS22t72NUurgzeAbzb1HWMqO4y4+9Hpjk5wvL/
|
| 30 | eVYizyuce3/fGke7aRYw/ADKygMJdW8H/OcCQQDz5OQb4j2QDpPZc0Nc4QlbvMsj
|
| 31 | 7p7otWRO5xRa6SzXqqV3+F0VpqvDmshEBkoCydaYwc2o6WQ5EBmExeV8124XAkEA
|
| 32 | qZzGsIxVP+sEVRWZmW6KNFSdVUpk3qzK0Tz/WjQMe5z0UunY9Ax9/4PVhp/j61bf
|
| 33 | eAYXunajbBSOLlx4D+TunwJBANkPI5S9iylsbLs6NkaMHV6k5ioHBBmgCak95JGX
|
| 34 | GMot/L2x0IYyMLAz6oLWh2hm7zwtb0CgOrPo1ke44hFYnfc=
|
| 35 | -----END RSA PRIVATE KEY-----"#;
|
| 36 |
|
| 37 | const ED25519_PRIVATE_KEY: &str = "nWGxne/9WmC6hEr0kuwsxERJxWl7MmkZcDusAxyuf2A=";
|
| 38 | const ED25519_PUBLIC_KEY: &str = "11qYAYKxCrfVS/7TyWQHOg7hcvPapiMlrwIaaPcHURo=";
|
| 39 |
|
| 40 | const TEST_MESSAGE: &str = r#"From: bill@example.com
|
| 41 | To: jdoe@example.com
|
| 42 | Subject: TPS Report
|
| 43 |
|
| 44 | I'm going to need those TPS reports ASAP. So, if you could do that, that'd be great.
|
| 45 | "#;
|
| 46 |
|
| 47 | fn main() {
|
| 48 | // Sign an e-mail message using RSA-SHA256
|
| 49 | let pk_rsa = RsaKey::<Sha256>::from_pkcs1_pem(RSA_PRIVATE_KEY).unwrap();
|
| 50 | let signature_rsa = DkimSigner::from_key(pk_rsa)
|
| 51 | .domain("example.com")
|
| 52 | .selector("default")
|
| 53 | .headers(["From", "To", "Subject"])
|
| 54 | .sign(TEST_MESSAGE.as_bytes())
|
| 55 | .unwrap();
|
| 56 |
|
| 57 | // Sign an e-mail message using ED25519-SHA256
|
| 58 | let pk_ed = Ed25519Key::from_bytes(
|
| 59 | &base64_decode(ED25519_PUBLIC_KEY.as_bytes()).unwrap(),
|
| 60 | &base64_decode(ED25519_PRIVATE_KEY.as_bytes()).unwrap(),
|
| 61 | )
|
| 62 | .unwrap();
|
| 63 | let signature_ed = DkimSigner::from_key(pk_ed)
|
| 64 | .domain("example.com")
|
| 65 | .selector("default-ed")
|
| 66 | .headers(["From", "To", "Subject"])
|
| 67 | .sign(TEST_MESSAGE.as_bytes())
|
| 68 | .unwrap();
|
| 69 |
|
| 70 | // Print the message including both signatures to stdout
|
| 71 | println!(
|
| 72 | "{}{}{}",
|
| 73 | signature_rsa.to_header(),
|
| 74 | signature_ed.to_header(),
|
| 75 | TEST_MESSAGE
|
| 76 | );
|
| 77 | }
|