commit f53ffd1c6009ab4e5a5644f266b7bca770dfeca5
Author: ✨小透明・宸✨ <47057319+TransparentLC@users.noreply.github.com>
Date:   Wed Jan 8 22:15:51 2025 +0800

    Initial commit

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diff --git a/LICENSE b/LICENSE
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+                    GNU AFFERO GENERAL PUBLIC LICENSE
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diff --git a/README.md b/README.md
new file mode 100644
index 0000000..c0841c0
--- /dev/null
+++ b/README.md
@@ -0,0 +1,94 @@
+# opencl_vanity_gpg
+
+使用 GPU（OpenCL）快速生成带有“靓号”的 PGP 密钥！
+
+“靓号”指的是带有连号等特定格式的密钥指纹或 ID（例如以 `77777777` 结尾），具体介绍和生成原理请参见：
+
+* [一位 PGP 进步青年的科学算号实践](https://www.douban.com/note/763978955/)
+* [某科学的 PGP 算号指南](https://blog.dejavu.moe/posts/the-scientific-vanity-pgp-counting-guide/)
+
+![](https://github.com/user-attachments/assets/e6364d93-fffe-4fcd-9857-b70155e6f476)
+
+简单来说，密钥指纹是密钥生效时间和公钥内容的 SHA-1，通过不断生成密钥和修改时间（成本更低）的暴力遍历方式找到“靓号”。
+
+> [!TIP]
+>
+> 姊妹项目：使用 WebGL 实现的网页版 [TransparentLC/webgl-vanity-gpg](https://github.com/TransparentLC/webgl-vanity-gpg)
+>
+> 实际上这个项目也可以当成是它的“锈化”版…\_φ(･ω･` )
+
+目前最好的同类工具是使用 CPU 的 [RedL0tus/VanityGPG](https://github.com/RedL0tus/VanityGPG) 和使用 GPU（CUDA）的 [cuihaoleo/gpg-fingerprint-filter-gpu](https://github.com/cuihaoleo/gpg-fingerprint-filter-gpu)。这个项目是使用 GPU（OpenCL）实现的，优点当然是开箱即用了。
+
+> TODO: GitHub Actions 自动编译
+
+# 使用方法
+
+```console
+$ opencl_vanity_gpg -h
+Usage: opencl_vanity_gpg [OPTIONS]
+
+Options:
+  -c, --cipher-suite <CIPHER_SUITE>  Cipher suite of the vanity key
+                                     ed25519, ecdsa-****, rsa**** => Primary key
+                                     cv25519,  ecdh-****          => Subkey
+                                     Use gpg CLI for further editing of the key. [default: ed25519] [possible values: ed25519, cv25519, rsa2048, rsa3072, rsa4096, ecdh-p256, ecdh-p384, ecdh-p521, ecdsa-p256, ecdsa-p384, ecdsa-p521]
+  -u, --user-id <USER_ID>            OpenPGP compatible user ID [default: "Dummy <dummy@example.com>"]
+  -p, --pattern <PATTERN>            A pattern less than 40 chars for matching fingerprints
+                                     Format:
+                                     * 0-9A-F are fixed, G-Z are wildcards
+                                     * Other chars will be ignored
+                                     * Case insensitive
+                                     Example:
+                                     * 11XXXX** may output a fingerprint ends with 11222234 or 11AAAABF
+                                     * 11XXYYZZ may output a fingerprint ends with 11223344 or 11AABBCC
+  -f, --filter <FILTER>              OpenCL kernel function for uint h[5] for matching fingerprints
+                                     Ignore the pattern and no estimate is given if this has been set
+                                     Example:
+                                     * (h[4] & 0xFFFF)     == 0x1234     outputs a fingerprint ends with 1234
+                                     * (h[0] & 0xFFFF0000) == 0xABCD0000 outputs a fingerprint starts with ABCD
+  -o, --output <OUTPUT>              The dir where the vanity keys are saved
+  -d, --device <DEVICE>              Device ID to use
+  -t, --thread <THREAD>              Adjust it to maximum your device's usage
+  -i, --iteration <ITERATION>        Adjust it to maximum your device's usage [default: 512]
+      --timeout <TIMEOUT>            Exit after a specified time in seconds
+      --oneshot                      Exit after getting a vanity key
+      --no-progress                  Don't print progress
+      --no-secret-key-logging        Don't print armored secret key
+      --device-list                  Show available OpenCL devices then exit
+  -h, --help                         Print help
+  -V, --version                      Print version
+
+$ opencl_vanity_gpg -p 111XXXYYYZZZ --oneshot
+[2025-01-08T13:50:49Z INFO  opencl_vanity_gpg] Using device: NVIDIA GeForce GTX 1070
+[2025-01-08T13:50:49Z INFO  opencl_vanity_gpg] Auto set thread: 1048576
+[2025-01-08T13:50:49Z INFO  opencl_vanity_gpg] You will get vanity keys created after 2008-01-04T19:02:17.598Z
+[2025-01-08T13:50:49Z WARN  opencl_vanity_gpg] No output dir given. Generated vanity keys will not be saved.
+[2025-01-08T13:50:58Z INFO  opencl_vanity_gpg] Get a vanity key:
+-----BEGIN PGP PRIVATE KEY BLOCK-----
+
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+xxxxx
+-----END PGP PRIVATE KEY BLOCK-----
+
+[2025-01-08T13:50:58Z INFO  opencl_vanity_gpg] Created at: 2022-10-07T18:07:54.000Z (1665166074)
+[2025-01-08T13:50:58Z INFO  opencl_vanity_gpg] Fingerprint #0: 8A166AF156114C8847390E158CB2111000AAAEEE
+[2025-01-08T13:50:58Z INFO  opencl_vanity_gpg] Fingerprint #1: AC6D0BE52B29AB00CFF4841CEDD530E847FD5DF6
+[2025-01-08T13:50:58Z INFO  opencl_vanity_gpg] Hashed: 32749.13m (0.48x) Time: 8.71s Speed: 3761.64m hash/s
+```
+
+一个 Curve25519 的密钥由用来签名和认证的 Ed25519 主密钥和用来加密的 Cv25519 子密钥组成。VanityGPG [只能生成主密钥为“靓号”的密钥](https://github.com/RedL0tus/VanityGPG/issues/5)，而这个项目也可以生成子密钥为“靓号”的密钥（只需要添加参数 `-c cv25519` 即可）。对于其他 NISP P-*** 的椭圆曲线的密钥也是类似的。
+
+# 性能对比
+
+| Repo | 计算方式 | 速度（hash/s） | 注释 |
+| - | - | - | - |
+| [RedL0tus/VanityGPG](https://github.com/RedL0tus/VanityGPG) | CPU | 165m | Xeon w5-2465X ×16 cores |
+| 这个项目 | CPU | 120m | Xeon w5-2465X ×16 cores <br> CPU 也可以是 OpenCL 的计算设备，虽然性能损耗比较严重…… |
+| [TransparentLC/webgl-vanity-gpg](https://github.com/TransparentLC/webgl-vanity-gpg) | GPU | 2b | GTX 1070 |
+| 这个项目 | GPU | 3b | GTX 1070 |
+| [TransparentLC/webgl-vanity-gpg](https://github.com/TransparentLC/webgl-vanity-gpg) | GPU | 7b | RTX A5500 |
+| 这个项目 | GPU | 12b | RTX A5500 |
+
+以上的速度均为生成 Curve25519 类型的密钥的速度。
diff --git a/src/main.rs b/src/main.rs
new file mode 100644
index 0000000..e09eb7c
--- /dev/null
+++ b/src/main.rs
@@ -0,0 +1,460 @@
+mod vanity_gpg;
+
+use vanity_gpg::{CipherSuite, VanitySecretKey};
+use clap::Parser;
+use std::{
+    fs,
+    io,
+    io::Write,
+    mem,
+    path::Path,
+    sync::mpsc::channel,
+    thread,
+    time::Instant,
+};
+use ocl::{Buffer, Device, Platform, ProQue};
+use rand::thread_rng;
+use pgp::types::PublicKeyTrait;
+use log::{warn, info, debug};
+
+#[derive(Parser, Debug)]
+#[command(version, about, long_about = None)]
+struct Args {
+    /// Cipher suite of the vanity key
+    /// ed25519, ecdsa-****, rsa**** => Primary key
+    /// cv25519,  ecdh-****          => Subkey
+    /// Use gpg CLI for further editing of the key.
+    #[arg(short, long, default_value_t, value_enum, verbatim_doc_comment)]
+    cipher_suite: vanity_gpg::CipherSuite,
+
+    /// OpenPGP compatible user ID
+    #[arg(short, long, default_value_t = String::from("Dummy <dummy@example.com>"), verbatim_doc_comment)]
+    user_id: String,
+
+    /// A pattern less than 40 chars for matching fingerprints
+    /// Format:
+    /// * 0-9A-F are fixed, G-Z are wildcards
+    /// * Other chars will be ignored
+    /// * Case insensitive
+    /// Example:
+    /// * 11XXXX** may output a fingerprint ends with 11222234 or 11AAAABF
+    /// * 11XXYYZZ may output a fingerprint ends with 11223344 or 11AABBCC
+    #[arg(short, long, verbatim_doc_comment)]
+    pattern: Option<String>,
+
+    /// OpenCL kernel function for uint h[5] for matching fingerprints
+    /// Ignore the pattern and no estimate is given if this has been set
+    /// Example:
+    /// * (h[4] & 0xFFFF)     == 0x1234     outputs a fingerprint ends with 1234
+    /// * (h[0] & 0xFFFF0000) == 0xABCD0000 outputs a fingerprint starts with ABCD
+    #[arg(short, long, verbatim_doc_comment)]
+    filter: Option<String>,
+
+    /// The dir where the vanity keys are saved
+    #[arg(short, long)]
+    output: Option<String>,
+
+    /// Device ID to use
+    #[arg(short, long)]
+    device: Option<usize>,
+
+    /// Adjust it to maximum your device's usage
+    #[arg(short, long)]
+    thread: Option<usize>,
+
+    /// Adjust it to maximum your device's usage
+    #[arg(short, long, default_value_t = 1 << 9)]
+    iteration: usize,
+
+    /// Exit after a specified time in seconds
+    #[arg(long)]
+    timeout: Option<f64>,
+
+    /// Exit after getting a vanity key
+    #[arg(long, default_value_t = false)]
+    oneshot: bool,
+
+    /// Don't print progress
+    #[arg(long, default_value_t = false)]
+    no_progress: bool,
+
+    /// Don't print armored secret key
+    #[arg(long, default_value_t = false)]
+    no_secret_key_logging: bool,
+
+    /// Show available OpenCL devices then exit
+    #[arg(long, default_value_t = false)]
+    device_list: bool,
+}
+
+/// 手动进行SHA-1的填充操作
+/// SHA-1的一个数据块是512 bit，因此输出的Vec<u32>长度是16的倍数
+fn manually_prepare_sha1(hashdata: Vec<u8>) -> Vec<u32> {
+    // 填充后的长度
+    // 用80 00 ...填充到448 mod 512 bit即56 mod 64 bytes，加上u64的8 bytes后长度是64的倍数
+    let padded_length = hashdata.len() + (64 - ((hashdata.len() + 8) % 64)) + 8;
+    let mut result_u8 = Vec::with_capacity(padded_length);
+    result_u8.extend_from_slice(&hashdata);
+    result_u8.push(0x80);
+    result_u8.resize(padded_length, 0);
+    // 需要把Vec<u8>直接转换成Vec<u32>
+    // https://stackoverflow.com/questions/49690459/converting-a-vecu32-to-vecu8-in-place-and-with-minimal-overhead
+    let mut result_u32 = unsafe {
+        let ptr = result_u8.as_mut_ptr() as *mut u32;
+        let length = result_u8.len() / 4;
+        let capacity = result_u8.capacity() / 4;
+        mem::forget(result_u8);
+        Vec::from_raw_parts(ptr, length, capacity)
+    };
+    // assert_eq!(result_u32.len() % 16, 0);
+    // SHA-1的word和length使用大端序
+    for i in 0..result_u32.len() {
+        result_u32[i] = result_u32[i].to_be();
+    }
+    let bit_length = hashdata.len() * 8;
+    result_u32[padded_length / 4 - 1] = (bit_length      ) as u32;
+    result_u32[padded_length / 4 - 2] = (bit_length >> 32) as u32;
+    result_u32
+}
+
+fn parse_pattern(pattern: String) -> (String, f64) {
+    let pattern = match pattern.trim().replace(" ", "").to_ascii_uppercase() {
+        x if x.len() <= 40 => "*".repeat(40 - x.len()) + &x,
+        _ => panic!("Invalid pattern"),
+    };
+    let mut parts: Vec<String> = vec![];
+    // 处理0-9A-F
+    let mut fixed_pos_count: usize = 0;
+    for i in 0..=4 {
+        let mut mask = String::new();
+        let mut value = String::new();
+        let mut activated = false;
+        for j in 0..8 {
+            let char = *pattern.chars().nth(i * 8 + j).get_or_insert(' ');
+            if char.is_ascii_hexdigit() {
+                fixed_pos_count += 1;
+                mask += "F";
+                value += &String::from(char);
+                activated = true;
+            } else {
+                mask += "0";
+                value += "0";
+            }
+        }
+        if activated {
+            parts.push(format!("(h[{i}] & 0x{mask}) == 0x{value}"));
+        }
+    }
+    // 处理通配符G-Z
+    let mut wildcard_pos_all: [Vec<usize>; (b'Z' - b'G' + 1) as usize] = std::default::Default::default();
+    for (i, wildcard) in pattern.chars().enumerate() {
+        if ('G'..='Z').contains(&wildcard) {
+            wildcard_pos_all[((wildcard as u8) - b'G') as usize].push(i);
+        }
+    }
+    let mut wildcard_pos_count = 0;
+    for wildcard in 'G'..='Z' {
+        let wildcard_pos = &wildcard_pos_all[((wildcard as u8) - b'G') as usize];
+        if wildcard_pos.len() >= 2 {
+            for i in 1..wildcard_pos.len() {
+                let left_index = wildcard_pos[i - 1] / 8;
+                let right_index = wildcard_pos[i] / 8;
+                let left_digit = 7 - wildcard_pos[i - 1] % 8;
+                let right_digit = 7 - wildcard_pos[i] % 8;
+                parts.push(format!(
+                    "(/* {}: h[{}][{}] == h[{}][{}] */ (h[{}] {} {}) & 0xF{}) == (h[{}] & 0xF{})",
+                    wildcard,
+                    left_index,
+                    left_digit,
+                    right_index,
+                    right_digit,
+                    left_index,
+                    if right_digit > left_digit { "<<" } else { ">>" },
+                    right_digit.abs_diff(left_digit) * 4,
+                    "0".repeat(right_digit),
+                    right_index,
+                    "0".repeat(right_digit),
+                ));
+            }
+            wildcard_pos_count += wildcard_pos.len() - 1;
+        }
+    }
+    let filter = if parts.len() != 0 {
+        parts.join(" && ")
+    } else {
+        String::from("true")
+    };
+    (filter, (16f64).powi((fixed_pos_count + wildcard_pos_count) as i32))
+}
+
+fn format_number(v: impl Into<f64>) -> String {
+    match Into::<f64>::into(v) {
+        // v if v >= 1e9f64 => { return format!("{:.02}g", v / 1e9f64); },
+        v if v >= 1e6f64 => { return format!("{:.02}m", v / 1e6f64); },
+        v if v >= 1e3f64 => { return format!("{:.02}k", v / 1e3f64); },
+        v => { return format!("{v:.02}"); },
+    }
+}
+
+fn main() -> Result<(), Box<dyn std::error::Error>> {
+    env_logger::Builder::from_env(env_logger::Env::default().filter_or(env_logger::DEFAULT_FILTER_ENV, "info"))
+        .format_indent(None)
+        .init();
+
+    let args = if cfg!(debug_assertions) {
+        Args {
+            cipher_suite: CipherSuite::RSA3072,
+            user_id: String::from("Dummy <dummy@example.com>"),
+            pattern: Some(String::from("XXXYYYZZZWWW")),
+            filter: None,
+            output: None,
+            device: None,
+            thread: None,
+            iteration: 512,
+            timeout: None,
+            oneshot: true,
+            no_progress: true,
+            no_secret_key_logging: false,
+            device_list: false,
+        }
+    } else {
+        Args::parse()
+    };
+    debug!("{:?}", &args);
+
+    let device_list: Vec<(Platform, Device)> = Platform::list()
+        .iter()
+        .rfold(
+            Vec::new(),
+            |mut list, platform| {
+                match Device::list_all(platform) {
+                    Ok(devices) => {
+                        let mut devices = devices
+                            .iter()
+                            .map(|device| (*platform, *device))
+                            .collect();
+                        list.append(&mut devices);
+                    },
+                    Err(_) => {},
+                }
+                list
+            },
+        );
+    if args.device_list {
+        for (index, (platform, device)) in device_list.iter().enumerate() {
+            info!("Device #{} - {}", index, format!(
+                "{} ({}, MaxWorkGroupSize={}, MaxWorkItemSizes={}, MaxWorkItemDimensions={})",
+                device.name()?,
+                platform.name()?,
+                device.info(ocl::core::DeviceInfo::MaxWorkGroupSize)?,
+                device.info(ocl::core::DeviceInfo::MaxWorkItemSizes)?,
+                device.info(ocl::core::DeviceInfo::MaxWorkItemDimensions)?,
+            ));
+        }
+        return Ok(());
+    }
+
+    let device = match args.device {
+        Some(i) =>  device_list[i].1,
+        None => Device::first(Platform::default())?,
+    };
+    info!("Using device: {}", device.name()?);
+    let dimension: usize = match args.thread {
+        Some(v) => v,
+        None => match device.info(ocl::core::DeviceInfo::MaxWorkItemSizes)? {
+            ocl::core::DeviceInfoResult::MaxWorkItemSizes(wgs) => {
+                let dimension = usize::max(wgs[0] * wgs[1], 1048576);
+                info!("Auto set thread: {dimension}");
+                dimension
+            }
+            _ => unreachable!(),
+        },
+    };
+    let iteration: usize = args.iteration;
+    info!(
+        "You will get vanity keys created after {}",
+        chrono::Utc::now()
+            .checked_sub_signed(chrono::TimeDelta::seconds((dimension * iteration) as i64)).unwrap()
+            .to_rfc3339_opts(chrono::SecondsFormat::Millis, true),
+    );
+    if let None = args.output {
+        if args.no_secret_key_logging {
+            warn!("No output dir given and you disabled secret key logging. You have no chance to save generated vanity keys.");
+        } else {
+            warn!("No output dir given. Generated vanity keys will not be saved.");
+        }
+    }
+
+    let (filter, estimate) = match args.filter {
+        Some(filter) => (filter, None),
+        None => match args.pattern {
+            Some(pattern) => {
+                let (filter, estimate) = parse_pattern(pattern);
+                (filter, Some(estimate))
+            },
+            None => panic!("No filter or pattern given"),
+        },
+    };
+    debug!("Filter: {filter}");
+
+    let mut rng = thread_rng();
+
+    match args.cipher_suite {
+        CipherSuite::RSA2048 | CipherSuite::RSA3072 | CipherSuite::RSA4096 => warn!("Generating RSA vanity keys is not recommended. Too slow!"),
+        _ => (),
+    };
+
+    let mut vanity_key = VanitySecretKey::new(args.cipher_suite, args.user_id.clone(), &mut rng);
+    let mut hashdata = manually_prepare_sha1(vanity_key.hashdata());
+
+    let pro_que = ProQue::builder()
+        .src(std::include_str!("shader.cl").replace(
+            "#define __INJECTS__",
+            &[
+                format!("#define FILTER(h) ({filter})"),
+                format!("#define CHUNK ({})", hashdata.len() / 16),
+            ].join("\n"),
+        ))
+        .device(device)
+        .dims(dimension)
+        .build()?;
+
+    let buffer_result = Buffer::<u32>::builder()
+        .queue(pro_que.queue().clone())
+        .len(1)
+        .fill_val(0)
+        .build()?;
+
+    let (tx_hashdata, rx_hashdata) = channel::<Vec<u32>>();
+    let (tx_result, rx_result) = channel::<Option<u32>>();
+
+    let mut hashed: usize = 0;
+    let mut hashed_count: usize = 0;
+    let mut start = Instant::now();
+
+    thread::spawn(move || {
+        let mut vec = vec![0; buffer_result.len()];
+        debug!("OpenCL thread ready");
+        while let Ok(hashdata) = rx_hashdata.recv() {
+            buffer_result.cmd().fill(0, None).enq().unwrap();
+            let buffer_hashdata = Buffer::<u32>::builder()
+                .queue(pro_que.queue().clone())
+                .len(hashdata.len())
+                .copy_host_slice(&hashdata)
+                .build().unwrap();
+            let kernel = pro_que
+                .kernel_builder("vanity_sha1")
+                .arg(&buffer_hashdata)
+                .arg(&buffer_result)
+                .arg(iteration as u64)
+                .build().unwrap();
+
+            unsafe { kernel.enq().unwrap(); }
+
+            buffer_result.read(&mut vec).enq().unwrap();
+            tx_result.send(match vec[0] {
+                0 => None,
+                x => Some(x),
+            }).unwrap();
+        }
+        debug!("OpenCL thread quit");
+    });
+
+    loop {
+        debug!("Send key to OpenCL thread");
+        tx_hashdata.send(hashdata)?;
+        let vanity_key_next = VanitySecretKey::new(args.cipher_suite, args.user_id.clone(), &mut rng);
+        let hashdata_next = manually_prepare_sha1(vanity_key_next.hashdata());
+
+        debug!("Receive result from OpenCL thread");
+        let vanity_timestamp = rx_result.recv()?;
+        hashed += dimension * iteration;
+        hashed_count += 1;
+        let elapsed = start.elapsed().as_secs_f64();
+        if !args.no_progress {
+            match estimate {
+                Some(estimate) => print!(
+                    "[{}] {}/{} {:.02}x {:.02}s {} hash/s \r",
+                    match hashed_count % 16 {
+                        x if x < 8 => format!("{}>))'>{}", " ".repeat(     x), " ".repeat(7 - x)),
+                        x          => format!("{}<'((<{}", " ".repeat(15 - x), " ".repeat(x - 8)),
+                    },
+                    format_number(hashed as f64),
+                    format_number(estimate),
+                    (hashed as f64) / estimate,
+                    elapsed,
+                    format_number((hashed as f64) / elapsed),
+                ),
+                None => print!(
+                    "[{}] {} {:.02}s {} hash/s \r",
+                    match hashed_count % 16 {
+                        x if x < 8 => format!("{}>))'>{}", " ".repeat(     x), " ".repeat(7 - x)),
+                        x          => format!("{}<'((<{}", " ".repeat(15 - x), " ".repeat(x - 8)),
+                    },
+                    format_number(hashed as f64),
+                    elapsed,
+                    format_number((hashed as f64) / elapsed),
+                ),
+            }
+            io::stdout().flush()?;
+        }
+
+        match vanity_timestamp {
+            Some(vanity_timestamp) => {
+                vanity_key.edit_timestamp(vanity_timestamp, &mut rng);
+                if args.no_secret_key_logging {
+                    info!("Get a vanity key!");
+                } else {
+                    info!("Get a vanity key: \n{}", vanity_key.to_armored_string()?);
+                }
+                info!(
+                    "Created at: {} ({})",
+                    vanity_key.secret_key.created_at().to_rfc3339_opts(chrono::SecondsFormat::Millis, true),
+                    vanity_key.secret_key.created_at().timestamp(),
+                );
+                info!("Fingerprint #0: {}", hex::encode_upper(vanity_key.secret_key.fingerprint().as_bytes()));
+                for (i, subkey) in vanity_key.secret_key.secret_subkeys.iter().enumerate() {
+                    info!("Fingerprint #{}: {}", i + 1, hex::encode_upper(subkey.fingerprint().as_bytes()));
+                }
+                match estimate {
+                    Some(estimate) => info!(
+                        "Hashed: {} ({:.02}x) Time: {:.02}s Speed: {} hash/s",
+                        format_number(hashed as f64),
+                        (hashed as f64) / estimate,
+                        elapsed,
+                        format_number((hashed as f64) / elapsed),
+                    ),
+                    None => info!(
+                        "Hashed: {} Time: {:.02}s Speed: {} hash/s",
+                        format_number(hashed as f64),
+                        elapsed,
+                        format_number((hashed as f64) / elapsed),
+                    ),
+                }
+                if let Some(ref output_dir) = args.output {
+                    fs::write(
+                        Path::new(output_dir).join(format!("{}-sec.asc", hex::encode_upper(vanity_key.secret_key.fingerprint().as_bytes()))),
+                        vanity_key.to_armored_string()?,
+                    ).unwrap();
+                }
+                if args.oneshot {
+                    break;
+                }
+                hashed = 0;
+                start = Instant::now();
+            },
+            None => {},
+        }
+        if let Some(timeout) = args.timeout {
+            if elapsed > timeout {
+                info!("Timeout!");
+                break;
+            }
+        }
+
+        vanity_key = vanity_key_next;
+        hashdata = hashdata_next;
+    }
+
+    Ok(())
+}
diff --git a/src/shader.cl b/src/shader.cl
new file mode 100644
index 0000000..50aeaaa
--- /dev/null
+++ b/src/shader.cl
@@ -0,0 +1,69 @@
+#define ROTL(x, n) (((x) << (n)) | ((x) >> (32 - (n))))
+
+#define __INJECTS__
+#ifdef __INJECTS__
+#define CHUNK (0)
+#define FILTER(h) (false)
+#endif
+
+__kernel void vanity_sha1(__constant uint *hashdata, __global uint *result, const ulong iter) {
+    uint data[CHUNK * 16];
+    for (uint i = 0; i < CHUNK * 16; i++) data[i] = hashdata[i];
+    uint nonce = data[1];
+    for (uint i = 0; i < iter; i++) {
+        data[1] = nonce - get_global_id(0) * iter - i;
+        if (data[1] > nonce) break;
+
+        uint h[] = {0x67452301, 0xEFCDAB89, 0x98BADCFE, 0x10325476, 0xC3D2E1F0};
+
+        #pragma unroll
+        for (uint chunk = 0; chunk < CHUNK; chunk++) {
+            uint w[80];
+            for (int i = 0; i < 16; i++) w[i] = data[chunk * 16 + i];
+            for (int i = 16; i < 80; i++) w[i] = ROTL(w[i - 3] ^ w[i - 8] ^ w[i - 14] ^ w[i - 16], 1);
+
+            uint a = h[0];
+            uint b = h[1];
+            uint c = h[2];
+            uint d = h[3];
+            uint e = h[4];
+            uint f;
+            uint k;
+            uint t;
+
+            #pragma unroll
+            for (int i = 0; i < 80; i++) {
+                if (i < 20) {
+                    f = d ^ (b & (c ^ d));
+                    k = 0x5A827999;
+                } else if (i < 40) {
+                    f = b ^ c ^ d;
+                    k = 0x6ED9EBA1;
+                } else if (i < 60) {
+                    f = (b & c) | (b & d) | (c & d);
+                    k = 0x8F1BBCDC;
+                } else {
+                    f = b ^ c ^ d;
+                    k = 0xCA62C1D6;
+                }
+                t = ROTL(a, 5) + f + e + k + w[i];
+                e = d;
+                d = c;
+                c = ROTL(b, 30);
+                b = a;
+                a = t;
+            }
+
+            h[0] += a;
+            h[1] += b;
+            h[2] += c;
+            h[3] += d;
+            h[4] += e;
+        }
+
+        if (FILTER(h)) {
+            *result = data[1];
+            break;
+        }
+    }
+}
\ No newline at end of file
diff --git a/src/vanity_gpg.rs b/src/vanity_gpg.rs
new file mode 100644
index 0000000..d7db879
--- /dev/null
+++ b/src/vanity_gpg.rs
@@ -0,0 +1,216 @@
+use clap::ValueEnum;
+use byteorder::{ByteOrder, BigEndian};
+use rand::{Rng, CryptoRng};
+use pgp::{
+    composed::{key::SecretKeyParamsBuilder, KeyType},
+    crypto::{
+        hash::HashAlgorithm,
+        sym::SymmetricKeyAlgorithm,
+        ecc_curve::ECCCurve,
+    },
+    ser::Serialize,
+    packet::KeyFlags,
+    types::{
+        CompressionAlgorithm,
+        PublicKeyTrait,
+        SecretKeyTrait,
+        KeyVersion,
+    },
+    Deserializable,
+    SecretKey,
+    SecretSubkey,
+    SignedSecretKey,
+    SubkeyParamsBuilder,
+};
+use smallvec::smallvec;
+use log::debug;
+
+/// 获取用于计算一个私钥的指纹的数据
+fn build_secret_key_hashdata(secret_key: impl SecretKeyTrait) -> Vec<u8> {
+    let mut hashdata = vec![0x99, 0, 0, 0x04, 0, 0, 0, 0];
+    BigEndian::write_u32(&mut hashdata[4..8], secret_key.created_at().timestamp() as u32);
+    hashdata.push(secret_key.algorithm().into());
+    secret_key.public_params().to_writer(&mut hashdata).unwrap();
+    let packet_len = (hashdata.len() - 3) as u16;
+    BigEndian::write_u16(&mut hashdata[1..3], packet_len);
+    hashdata
+}
+
+/// 需要被修改的密钥类型
+#[derive(ValueEnum, Default, Clone, Copy, Debug)]
+#[clap(rename_all = "kebab_case")]
+pub enum CipherSuite {
+    #[default]
+    Ed25519,
+    Cv25519,
+    RSA2048,
+    RSA3072,
+    RSA4096,
+    EcdhP256,
+    EcdhP384,
+    EcdhP521,
+    EcdsaP256,
+    EcdsaP384,
+    EcdsaP521,
+}
+pub struct VanitySecretKey {
+    pub cipher_suite: CipherSuite,
+    pub secret_key: SignedSecretKey,
+}
+
+impl VanitySecretKey {
+    pub fn new(cipher_suite: CipherSuite, user_id: String, mut rng: impl Rng + CryptoRng) -> Self {
+        let mut secret_key_params_builder = SecretKeyParamsBuilder::default();
+        secret_key_params_builder
+            .preferred_symmetric_algorithms(smallvec![
+                SymmetricKeyAlgorithm::AES256,
+                SymmetricKeyAlgorithm::AES192,
+                SymmetricKeyAlgorithm::AES128,
+            ])
+            .preferred_hash_algorithms(smallvec![
+                HashAlgorithm::SHA2_512,
+                HashAlgorithm::SHA2_384,
+                HashAlgorithm::SHA2_256,
+                HashAlgorithm::SHA2_224,
+            ])
+            .preferred_compression_algorithms(smallvec![
+                CompressionAlgorithm::ZLIB,
+                CompressionAlgorithm::BZip2,
+                CompressionAlgorithm::ZIP,
+                CompressionAlgorithm::Uncompressed,
+            ])
+            .can_certify(true)
+            .can_sign(true)
+            .primary_user_id(user_id);
+
+        match cipher_suite {
+            CipherSuite::Cv25519 | CipherSuite::Ed25519 => {
+                let mut subkey_params_builder = SubkeyParamsBuilder::default();
+                subkey_params_builder
+                    .key_type(KeyType::ECDH(ECCCurve::Curve25519))
+                    .can_encrypt(true);
+                secret_key_params_builder
+                    .key_type(KeyType::EdDSALegacy)
+                    .subkey(subkey_params_builder.build().unwrap());
+            },
+                CipherSuite::EcdhP256 | CipherSuite::EcdsaP256 |
+                CipherSuite::EcdhP384 | CipherSuite::EcdsaP384 |
+                CipherSuite::EcdhP521 | CipherSuite::EcdsaP521 => {
+                let curve = match cipher_suite {
+                    CipherSuite::EcdhP256 | CipherSuite::EcdsaP256 => ECCCurve::P256,
+                    CipherSuite::EcdhP384 | CipherSuite::EcdsaP384 => ECCCurve::P384,
+                    CipherSuite::EcdhP521 | CipherSuite::EcdsaP521 => ECCCurve::P521,
+                    _ => unreachable!(),
+                };
+                let mut subkey_params_builder = SubkeyParamsBuilder::default();
+                subkey_params_builder
+                    .key_type(KeyType::ECDH(curve.clone()))
+                    .can_encrypt(true);
+                secret_key_params_builder
+                    .key_type(KeyType::ECDSA(curve.clone()))
+                    .subkey(subkey_params_builder.build().unwrap());
+            },
+            CipherSuite::RSA2048 | CipherSuite::RSA3072 | CipherSuite::RSA4096 => {
+                let bits = match cipher_suite {
+                    CipherSuite::RSA2048 => 2048,
+                    CipherSuite::RSA3072 => 3072,
+                    CipherSuite::RSA4096 => 4096,
+                    _ => unreachable!(),
+                };
+                secret_key_params_builder
+                    .key_type(KeyType::Rsa(bits))
+                    .can_encrypt(true);
+            },
+        }
+
+        let secret_key_params = secret_key_params_builder.build().unwrap();
+        let secret_key = secret_key_params
+            .generate(&mut rng).unwrap()
+            .sign(&mut rng, || String::new()).unwrap();
+        assert_eq!(secret_key.version(), KeyVersion::V4);
+
+        Self {
+            cipher_suite,
+            secret_key,
+        }
+    }
+
+    pub fn edit_timestamp(&mut self, timestamp: u32, mut rng: impl Rng + CryptoRng) {
+        // RFC 9580 - OpenPGP
+        // 4. Packet Syntax
+        // https://datatracker.ietf.org/doc/html/rfc9580#name-packet-syntax
+        let mut secret_key_bytes = Vec::from(self.secret_key.to_bytes().unwrap());
+        let mut packet_read_pos: usize = 0;
+        while packet_read_pos < secret_key_bytes.len() {
+            let cipher_type_byte = secret_key_bytes[packet_read_pos];
+            debug!("cipher_type_byte = {:#04X}", cipher_type_byte);
+            packet_read_pos += 1;
+            let (size, size_length) = match cipher_type_byte >> 6 {
+                0b10 => match cipher_type_byte & 0b00000011 {
+                    0 => (secret_key_bytes[packet_read_pos] as usize, 1),
+                    1 => (BigEndian::read_u16(&secret_key_bytes[packet_read_pos..packet_read_pos + 2]) as usize, 2),
+                    2 => (BigEndian::read_u32(&secret_key_bytes[packet_read_pos..packet_read_pos + 4]) as usize, 4),
+                    3 => unimplemented!("Indeterminate length"),
+                    _ => unreachable!(),
+                },
+                0b11 => match secret_key_bytes[packet_read_pos] {
+                    x if x < 192 => (secret_key_bytes[packet_read_pos] as usize, 1),
+                    x if x < 224 => ((((secret_key_bytes[packet_read_pos] - 192) as usize) << 8) + (secret_key_bytes[packet_read_pos + 1] as usize) + 192, 2),
+                    x if x == 255 => (BigEndian::read_u32(&secret_key_bytes[packet_read_pos + 1..packet_read_pos + 5]) as usize, 5),
+                    _ => unimplemented!("Partial body length"),
+                },
+                _ => unreachable!(),
+            };
+            debug!("size = {size}, size_length = {size_length}");
+            packet_read_pos += size_length;
+            let packet_type = match cipher_type_byte >> 6 {
+                0b10 => (cipher_type_byte & 0b00111100) >> 2,
+                0b11 => cipher_type_byte & 0b00111111,
+                _ => unreachable!(),
+            };
+            debug!("packet_type = {packet_type:#04X}");
+            // 0x05 => Secret-Key Packet
+            // 0x07 => Secret-Subkey Packet
+            if [0x05, 0x07].contains(&packet_type) {
+                BigEndian::write_u32(&mut secret_key_bytes[packet_read_pos + 1..packet_read_pos + 5], timestamp);
+            }
+            packet_read_pos += size;
+        }
+        // 只修改了时间，因此这个key的签名是无效的
+        let edited_key = SignedSecretKey::from_bytes(&secret_key_bytes[..]).unwrap();
+
+        // 重新对key签名
+        let mut subkey_flags = KeyFlags::default();
+        subkey_flags.set_encrypt_storage(true);
+        subkey_flags.set_encrypt_comms(true);
+        self.secret_key = SecretKey::new(
+            edited_key.primary_key,
+            edited_key.details.as_unsigned(),
+            edited_key.public_subkeys
+                .iter()
+                .map(|e| e.as_unsigned())
+                .collect(),
+            edited_key.secret_subkeys
+                .iter()
+                .map(|e| SecretSubkey::new(e.key.clone(), subkey_flags))
+                .collect(),
+        ).sign(&mut rng, || String::new()).unwrap();
+        // self.secret_key.verify().unwrap();
+    }
+
+    pub fn hashdata(&self) -> Vec<u8> {
+        match self.cipher_suite {
+            CipherSuite::Ed25519 |
+            CipherSuite::EcdsaP256 | CipherSuite::EcdsaP384 | CipherSuite::EcdsaP521 |
+            CipherSuite::RSA2048 | CipherSuite::RSA3072 | CipherSuite::RSA4096
+                => build_secret_key_hashdata(&self.secret_key),
+            CipherSuite::Cv25519 |
+            CipherSuite::EcdhP256 | CipherSuite::EcdhP384 | CipherSuite::EcdhP521
+                => build_secret_key_hashdata(&self.secret_key.secret_subkeys[0]),
+        }
+    }
+
+    pub fn to_armored_string(&self) -> Result<String, pgp::errors::Error> {
+        self.secret_key.to_armored_string(pgp::ArmorOptions::default())
+    }
+}