Merge branch 'master' of https://github.com/parallel-programming-hwr/destools

- Remove benchmarking of sha512
4 years ago · 6328b490ce
parent 564c23a511 4ab1d61c28
commit 6328b490ce
5 changed files with 196 additions and 208 deletions
--- a/Cargo.lock
+++ b/Cargo.lock
@ -36,8 +36,8 @@ name = "atty"
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- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
+ "hermit-abi 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
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@ -53,11 +53,14 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
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+ "crossbeam-utils 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
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@ -173,6 +176,15 @@ dependencies = [
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
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+ "maybe-uninit 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@ -193,7 +205,7 @@ dependencies = [
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- "memoffset 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)",
+ "memoffset 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)",
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@ -216,6 +228,15 @@ dependencies = [
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+[[package]]
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "subtle 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
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@ -231,19 +252,22 @@ name = "destools"
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+ "crossbeam-channel 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)",
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+ "hmac 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)",
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- "regex 1.3.5 (registry+https://github.com/rust-lang/crates.io-index)",
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- "structopt 0.3.11 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@ -269,7 +293,7 @@ version = "0.3.4"
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@ -298,7 +322,7 @@ version = "0.1.14"
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@ -312,10 +336,19 @@ dependencies = [

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- "libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)",
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+source = "registry+https://github.com/rust-lang/crates.io-index"
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+ "crypto-mac 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
+ "digest 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
@ -325,7 +358,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
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 [[package]]
@ -334,7 +367,7 @@ version = "0.1.15"
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@ -350,10 +383,10 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

 [[package]]
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 [[package]]
@ -361,8 +394,8 @@ name = "num_cpus"
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+ "hermit-abi 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
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 [[package]]
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@ -398,31 +431,31 @@ source = "registry+https://github.com/rust-lang/crates.io-index"

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@ -559,32 +592,11 @@ dependencies = [
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 "checksum dirs 2.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "13aea89a5c93364a98e9b37b2fa237effbb694d5cfe01c5b70941f7eb087d5e3"
@ -854,22 +873,23 @@ dependencies = [
 "checksum generic-array 0.12.3 (registry+https://github.com/rust-lang/crates.io-index)" = "c68f0274ae0e023facc3c97b2e00f076be70e254bc851d972503b328db79b2ec"
 "checksum getrandom 0.1.14 (registry+https://github.com/rust-lang/crates.io-index)" = "7abc8dd8451921606d809ba32e95b6111925cd2906060d2dcc29c070220503eb"
 "checksum heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "20564e78d53d2bb135c343b3f47714a56af2061f1c928fdb541dc7b9fdd94205"
-"checksum hermit-abi 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "1010591b26bbfe835e9faeabeb11866061cc7dcebffd56ad7d0942d0e61aefd8"
+"checksum hermit-abi 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "725cf19794cf90aa94e65050cb4191ff5d8fa87a498383774c47b332e3af952e"
+"checksum hmac 0.7.1 (registry+https://github.com/rust-lang/crates.io-index)" = "5dcb5e64cda4c23119ab41ba960d1e170a774c8e4b9d9e6a9bc18aabf5e59695"
 "checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
-"checksum libc 0.2.67 (registry+https://github.com/rust-lang/crates.io-index)" = "eb147597cdf94ed43ab7a9038716637d2d1bf2bc571da995d0028dec06bd3018"
+"checksum libc 0.2.68 (registry+https://github.com/rust-lang/crates.io-index)" = "dea0c0405123bba743ee3f91f49b1c7cfb684eef0da0a50110f758ccf24cdff0"
 "checksum lzma-sys 0.1.15 (registry+https://github.com/rust-lang/crates.io-index)" = "53e48818fd597d46155132bbbb9505d6d1b3d360b4ee25cfa91c406f8a90fe91"
 "checksum maybe-uninit 2.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "60302e4db3a61da70c0cb7991976248362f30319e88850c487b9b95bbf059e00"
 "checksum memchr 2.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "3728d817d99e5ac407411fa471ff9800a778d88a24685968b36824eaf4bee400"
-"checksum memoffset 0.5.3 (registry+https://github.com/rust-lang/crates.io-index)" = "75189eb85871ea5c2e2c15abbdd541185f63b408415e5051f5cac122d8c774b9"
+"checksum memoffset 0.5.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b4fc2c02a7e374099d4ee95a193111f72d2110197fe200272371758f6c3643d8"
 "checksum num_cpus 1.12.0 (registry+https://github.com/rust-lang/crates.io-index)" = "46203554f085ff89c235cd12f7075f3233af9b11ed7c9e16dfe2560d03313ce6"
 "checksum numtoa 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b8f8bdf33df195859076e54ab11ee78a1b208382d3a26ec40d142ffc1ecc49ef"
 "checksum opaque-debug 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2839e79665f131bdb5782e51f2c6c9599c133c6098982a54c794358bf432529c"
 "checksum pbr 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "4403eb718d70c03ee279e51737782902c68cca01e870a33b6a2f9dfb50b9cd83"
 "checksum pkg-config 0.3.17 (registry+https://github.com/rust-lang/crates.io-index)" = "05da548ad6865900e60eaba7f589cc0783590a92e940c26953ff81ddbab2d677"
 "checksum ppv-lite86 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "74490b50b9fbe561ac330df47c08f3f33073d2d00c150f719147d7c54522fa1b"
-"checksum proc-macro-error 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)" = "e7959c6467d962050d639361f7703b2051c43036d03493c36f01d440fdd3138a"
-"checksum proc-macro-error-attr 0.4.11 (registry+https://github.com/rust-lang/crates.io-index)" = "e4002d9f55991d5e019fb940a90e1a95eb80c24e77cb2462dd4dc869604d543a"
-"checksum proc-macro2 1.0.9 (registry+https://github.com/rust-lang/crates.io-index)" = "6c09721c6781493a2a492a96b5a5bf19b65917fe6728884e7c44dd0c60ca3435"
+"checksum proc-macro-error 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)" = "18f33027081eba0a6d8aba6d1b1c3a3be58cbb12106341c2d5759fcd9b5277e7"
+"checksum proc-macro-error-attr 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)" = "8a5b4b77fdb63c1eca72173d68d24501c54ab1269409f6b672c85deb18af69de"
+"checksum proc-macro2 1.0.10 (registry+https://github.com/rust-lang/crates.io-index)" = "df246d292ff63439fea9bc8c0a270bed0e390d5ebd4db4ba15aba81111b5abe3"
 "checksum quote 0.3.15 (registry+https://github.com/rust-lang/crates.io-index)" = "7a6e920b65c65f10b2ae65c831a81a073a89edd28c7cce89475bff467ab4167a"
 "checksum quote 1.0.3 (registry+https://github.com/rust-lang/crates.io-index)" = "2bdc6c187c65bca4260c9011c9e3132efe4909da44726bad24cf7572ae338d7f"
 "checksum rand 0.7.3 (registry+https://github.com/rust-lang/crates.io-index)" = "6a6b1679d49b24bbfe0c803429aa1874472f50d9b363131f0e89fc356b544d03"
@ -881,25 +901,23 @@ dependencies = [
 "checksum redox_syscall 0.1.56 (registry+https://github.com/rust-lang/crates.io-index)" = "2439c63f3f6139d1b57529d16bc3b8bb855230c8efcc5d3a896c8bea7c3b1e84"
 "checksum redox_termios 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "7e891cfe48e9100a70a3b6eb652fef28920c117d366339687bd5576160db0f76"
 "checksum redox_users 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "09b23093265f8d200fa7b4c2c76297f47e681c655f6f1285a8780d6a022f7431"
-"checksum regex 1.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "8900ebc1363efa7ea1c399ccc32daed870b4002651e0bed86e72d501ebbe0048"
+"checksum regex 1.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "7f6946991529684867e47d86474e3a6d0c0ab9b82d5821e314b1ede31fa3a4b3"
 "checksum regex-syntax 0.6.17 (registry+https://github.com/rust-lang/crates.io-index)" = "7fe5bd57d1d7414c6b5ed48563a2c855d995ff777729dcd91c369ec7fea395ae"
 "checksum rpassword 4.0.5 (registry+https://github.com/rust-lang/crates.io-index)" = "99371657d3c8e4d816fb6221db98fa408242b0b53bac08f8676a41f8554fe99f"
 "checksum rust-argon2 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2bc8af4bda8e1ff4932523b94d3dd20ee30a87232323eda55903ffd71d2fb017"
-"checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
 "checksum scopeguard 1.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d29ab0c6d3fc0ee92fe66e2d99f700eab17a8d57d1c1d3b748380fb20baa78cd"
-"checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
-"checksum semver-parser 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "388a1df253eca08550bef6c72392cfe7c30914bf41df5269b68cbd6ff8f570a3"
 "checksum sha2 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "27044adfd2e1f077f649f59deb9490d3941d674002f7d062870a60ebe9bd47a0"
 "checksum spinner 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6e3a7cd01625b7e43e62815677d692cb59b221c2fdc2853d1eb86a260ee0c272"
 "checksum spinners 1.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e26e56abcec96e1336be97bb1953153f80e050ff0f86d67721127d30391b6472"
 "checksum stream-cipher 0.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "8131256a5896cabcf5eb04f4d6dacbe1aefda854b0d9896e09cb58829ec5638c"
 "checksum strsim 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8ea5119cdb4c55b55d432abb513a0429384878c15dde60cc77b1c99de1a95a6a"
-"checksum structopt 0.3.11 (registry+https://github.com/rust-lang/crates.io-index)" = "3fe43617218c0805c6eb37160119dc3c548110a67786da7218d1c6555212f073"
-"checksum structopt-derive 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "c6e79c80e0f4efd86ca960218d4e056249be189ff1c42824dcd9a7f51a56f0bd"
+"checksum structopt 0.3.12 (registry+https://github.com/rust-lang/crates.io-index)" = "c8faa2719539bbe9d77869bfb15d4ee769f99525e707931452c97b693b3f159d"
+"checksum structopt-derive 0.4.5 (registry+https://github.com/rust-lang/crates.io-index)" = "3f88b8e18c69496aad6f9ddf4630dd7d585bcaf765786cb415b9aec2fe5a0430"
 "checksum strum 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4ca6e4730f517e041e547ffe23d29daab8de6b73af4b6ae2a002108169f5e7da"
 "checksum strum_macros 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3384590878eb0cab3b128e844412e2d010821e7e091211b9d87324173ada7db8"
+"checksum subtle 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2d67a5a62ba6e01cb2192ff309324cb4875d0c451d55fe2319433abe7a05a8ee"
 "checksum syn 0.11.11 (registry+https://github.com/rust-lang/crates.io-index)" = "d3b891b9015c88c576343b9b3e41c2c11a51c219ef067b264bd9c8aa9b441dad"
-"checksum syn 1.0.16 (registry+https://github.com/rust-lang/crates.io-index)" = "123bd9499cfb380418d509322d7a6d52e5315f064fe4b3ad18a53d6b92c07859"
+"checksum syn 1.0.17 (registry+https://github.com/rust-lang/crates.io-index)" = "0df0eb663f387145cab623dea85b09c2c5b4b0aef44e945d928e682fce71bb03"
 "checksum syn-mid 0.5.0 (registry+https://github.com/rust-lang/crates.io-index)" = "7be3539f6c128a931cf19dcee741c1af532c7fd387baa739c03dd2e96479338a"
 "checksum synom 0.11.3 (registry+https://github.com/rust-lang/crates.io-index)" = "a393066ed9010ebaed60b9eafa373d4b1baac186dd7e008555b0f702b51945b6"
 "checksum term 0.6.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c0863a3345e70f61d613eab32ee046ccd1bcc5f9105fe402c61fcd0c13eeb8b5"
--- a/Cargo.toml
+++ b/Cargo.toml
@ -19,5 +19,8 @@ pbr = "1.0.2"
 spinners = "1.2.0"
 regex = "1.3.4"
 byteorder = "1.3.4"
-bdflib = "0.2.0"
-benchlib-rs = "0.3.4"
+benchlib-rs = "0.3.4"
+bdflib = "0.4.0"
+hmac = "0.7.1"
+num_cpus = "1.12.0"
+crossbeam-channel = "0.4.2"
--- a/src/lib/crypt.rs
+++ b/src/lib/crypt.rs
@ -1,4 +1,4 @@
-use crate::lib::hash::sha_checksum;
+use crate::lib::hash::create_hmac;
 use cfb_mode::stream_cipher::{NewStreamCipher, StreamCipher};
 use cfb_mode::Cfb;
 use des::Des;
@ -31,16 +31,14 @@ pub fn decrypt_data(data: &[u8], key: &[u8]) -> Vec<u8> {
 }

 /// Decrypts data using a dictionary
-pub fn decrypt_with_dictionary(
-    data: &[u8],
-    dict: Vec<(&String, Vec<u8>)>,
-    checksum: &[u8],
-) -> Option<Vec<u8>> {
+pub fn decrypt_with_dictionary(data: &[u8], dict: Vec<(&String, &Vec<u8>)>) -> Option<Vec<u8>> {
    let decrypted = Mutex::<Option<Vec<u8>>>::new(None);
+    let hmac = &data[data.len() - 32..];
+    let encrypted_data = &data[..data.len() - 32];
    let pass = dict.par_iter().find_first(|(_pw, key)| {
-        let decrypted_data = decrypt_data(&data, key);
-        let decr_check = sha_checksum(&decrypted_data);
-        return if decr_check == checksum {
+        let decrypted_data = decrypt_data(encrypted_data, &key[0..8]);
+        let decr_hmac = create_hmac(&key, &decrypted_data).expect("failed to create hmac");
+        return if decr_hmac == hmac {
            let mut decry = decrypted.lock().unwrap();
            *decry = Some(decrypted_data);
            true
@ -57,23 +55,3 @@ pub fn decrypt_with_dictionary(
    }
    None
 }
-
-/// Decrypts data by generating all possible keys
-pub fn decrypt_brute_brute_force(data: &[u8], checksum: &[u8]) -> Option<Vec<u8>> {
-    let encryption_key = (0u64..std::u64::MAX)
-        .into_par_iter()
-        .find_first(|num: &u64| {
-            let key: &[u8] = &num.to_le_bytes();
-            let decrypted_data = decrypt_data(&data, key);
-            let decr_check = sha_checksum(&decrypted_data);
-
-            decr_check == checksum
-        });
-    if let Some(num) = encryption_key {
-        let key: &[u8] = &num.to_le_bytes();
-        println!("Key found: {:?}", key);
-
-        return Some(decrypt_data(data, key));
-    }
-    None
-}
--- a/src/lib/hash.rs
+++ b/src/lib/hash.rs
@ -1,6 +1,9 @@
-use sha2::{Digest, Sha256, Sha512};
+use hmac::crypto_mac::InvalidKeyLength;
+use hmac::{Hmac, Mac};
+use sha2::{Digest, Sha256};

 pub type PassKey = (String, Vec<u8>);
+type HmacSha256 = Hmac<Sha256>;

 /// Hashes a text to a 32 bytes long key.
 pub fn create_key(pw: &str) -> Vec<u8> {
@ -21,15 +24,6 @@ pub fn sha256(pw: &str) -> Vec<u8> {
    result.to_vec()
 }

-/// Hashes a text to sha512
-pub fn sha512(pw: &str) -> Vec<u8> {
-    let mut hasher = Sha512::default();
-    hasher.input(pw);
-    let result = hasher.result();
-
-    result.to_vec()
-}
-
 /// Creates a sha256 hashsum from the input data
 pub fn sha_checksum(data: &Vec<u8>) -> Vec<u8> {
    let mut hasher = Sha256::default();
@ -38,3 +32,11 @@ pub fn sha_checksum(data: &Vec<u8>) -> Vec<u8> {

    result.to_vec()
 }
+
+/// Creates a hmac hash to be appended after the encrypted message
+pub fn create_hmac(key: &Vec<u8>, data: &Vec<u8>) -> Result<Vec<u8>, InvalidKeyLength> {
+    let mut mac = HmacSha256::new_varkey(key)?;
+    mac.input(data);
+
+    Ok(mac.result().code().to_vec())
+}
--- a/src/main.rs
+++ b/src/main.rs
@ -1,13 +1,12 @@
 pub mod lib;

-use crate::lib::crypt::{
-    decrypt_brute_brute_force, decrypt_data, decrypt_with_dictionary, encrypt_data,
-};
-use crate::lib::hash::{create_key, sha256, sha512, sha_checksum};
+use crate::lib::crypt::{decrypt_data, decrypt_with_dictionary, encrypt_data};
+use crate::lib::hash::{create_hmac, sha256};
 use crate::lib::timing::TimeTaker;
 use bdf::chunks::{DataEntry, HashEntry, HashLookupTable};
 use bdf::io::{BDFReader, BDFWriter};
 use benchlib::benching::Bencher;
+use crossbeam_channel::bounded;
 use pbr::ProgressBar;
 use rayon::prelude::*;
 use rayon::str;
@ -18,7 +17,7 @@ use spinners::{Spinner, Spinners};
 use std::collections::HashMap;
 use std::fs;
 use std::fs::File;
-use std::sync::mpsc::sync_channel;
+use std::sync::{Arc, Mutex};
 use std::thread;
 use std::time::Duration;
 use structopt::StructOpt;
@ -58,10 +57,6 @@ struct Encrypt {
    /// The output file
    #[structopt(short = "o", long = "output", default_value = "output.des")]
    output: String,
-
-    /// The file for the checksum.
-    #[structopt(long = "checksum-file")]
-    output_checksum: Option<String>,
 }

 #[derive(StructOpt, Clone)]
@ -74,10 +69,6 @@ struct Decrypt {
    #[structopt(short = "o", long = "output", default_value = "output.txt")]
    output: String,

-    /// The file for the checksum.
-    #[structopt(long = "checksum-file")]
-    input_checksum: Option<String>,
-
    /// A dictionary file containing a list of passwords
    /// The file needs to be in a csv format with calculated password hashes.
    /// The hashes can be calculated with the create-dictionary subcommand from a txt file.
@ -121,15 +112,12 @@ fn encrypt(_opts: &Opts, args: &Encrypt) {
    let output: String = (*args.output).parse().unwrap();
    let data: Vec<u8> = fs::read(input).expect("Failed to read input file!");

-    if let Some(output_checksum) = (args.clone()).output_checksum {
-        let checksum = sha_checksum(&data);
-        let checksum_b64 = base64::encode(checksum.as_slice());
-        fs::write(output_checksum, checksum_b64.as_bytes())
-            .expect("Failed to write checksum file!");
-    }
    let pass = read_password_from_tty(Some("Password: ")).unwrap();
-    let key = create_key(&pass);
-    let enc_data = encrypt_data(data.as_slice(), key.as_slice());
+    let sha256_key = sha256(&pass);
+    let key = &sha256_key[0..8];
+    let mut data_hmac = create_hmac(&sha256_key, &data).expect("failed to create hmac");
+    let mut enc_data = encrypt_data(data.as_slice(), &key);
+    enc_data.append(&mut data_hmac);
    fs::write(output, enc_data.as_slice()).expect("Failed to write output file!");
 }

@ -143,39 +131,21 @@ fn decrypt(_opts: &Opts, args: &Decrypt) {
    let dictionary = args.dictionary.clone();
    let data = fs::read(input).expect("Failed to read input file!");

-    if let Some(input_checksum) = (args.clone()).input_checksum {
-        let bin_content = fs::read(input_checksum).expect("Failed to read checksum file!");
-        let data_checksum = base64::decode(bin_content.as_slice()).unwrap();
-
-        if let Some(dict) = dictionary {
-            tt.take("decryption-start");
-            if let Some(dec_data) = decrypt_with_dictionary_file(dict, &data, &data_checksum) {
-                fs::write(output, &dec_data).expect("Failed to write output file!");
-                println!(
-                    "Decryption took {:.2}s",
-                    tt.since("decryption-start").unwrap().as_secs_f32()
-                );
-                println!("Finished {:.2}s!", tt.since("start").unwrap().as_secs_f32());
-            } else {
-                println!("\nNo password found!");
-                println!("Finished {:.2}s!", tt.since("start").unwrap().as_secs_f32());
-            }
+    if let Some(dict) = dictionary {
+        tt.take("decryption-start");
+        if let Some(dec_data) = decrypt_with_dictionary_file(dict, &data) {
+            fs::write(output, &dec_data).expect("Failed to write output file!");
+            println!(
+                "Decryption took {:.2}s",
+                tt.since("decryption-start").unwrap().as_secs_f32()
+            );
+            println!("Finished {:.2}s!", tt.since("start").unwrap().as_secs_f32());
        } else {
-            let sp = spinner("Brute force decrypting file");
-            if let Some(dec_data) = decrypt_brute_brute_force(&data, &data_checksum) {
-                sp.stop();
-                fs::write(output, &dec_data).expect("Failed to write output file!");
-                println!("Finished {:.2}s!", tt.since("start").unwrap().as_secs_f32());
-            } else {
-                sp.stop();
-                println!("\nNo fitting key found. (This should have been impossible)")
-            }
+            println!("\nNo password found!");
+            println!("Finished {:.2}s!", tt.since("start").unwrap().as_secs_f32());
        }
    } else {
-        let pass = read_password_from_tty(Some("Password: ")).unwrap();
-        let key = create_key(&pass);
-        let result = decrypt_data(&data, key.as_slice());
-        fs::write(output, &result).expect("Failed to write output file!");
+        println!("No checksum file given!");
    }
 }

@ -189,7 +159,6 @@ fn create_dictionary(_opts: &Opts, args: &CreateDictionary) {
    let input: String = (*args.input).parse().unwrap();
    // TODO: Some form of removing duplicates (without itertools)
    let fout = File::create(args.output.clone()).unwrap();
-    let handle;

    let content = fs::read_to_string(input).expect("Failed to read content");
    let lines = content.par_lines();
@ -198,7 +167,6 @@ fn create_dictionary(_opts: &Opts, args: &CreateDictionary) {

    let mut pb = ProgressBar::new(entry_count);
    pb.set_max_refresh_rate(Some(Duration::from_millis(200)));
-    let (rx, tx) = sync_channel::<DataEntry>(100_00_000);

    let mut bdf_file = BDFWriter::new(fout, entry_count, args.compress != 0);
    bdf_file.set_compression_level(args.compress);
@ -209,18 +177,24 @@ fn create_dictionary(_opts: &Opts, args: &CreateDictionary) {
        .add_lookup_entry(HashEntry::new(SHA256.to_string(), 32))
        .expect("Failed to add sha256 lookup entry");

-    handle = thread::spawn(move || {
-        for entry in tx {
-            if let Err(e) = bdf_file.add_data_entry(entry) {
-                println!("{:?}", e);
+    let mut threads = Vec::new();
+    let (rx, tx) = bounded::<DataEntry>(100_00_000);
+    let bdf_arc = Arc::new(Mutex::new(bdf_file));
+    let pb_arc = Arc::new(Mutex::new(pb));
+
+    for _ in 0..(num_cpus::get() as f32 / 4f32).max(1f32) as usize {
+        let tx = tx.clone();
+        let bdf_arc = Arc::clone(&bdf_arc);
+        let pb_arc = Arc::clone(&pb_arc);
+        threads.push(thread::spawn(move || {
+            for entry in tx {
+                if let Err(e) = &bdf_arc.lock().unwrap().add_data_entry(entry) {
+                    println!("{:?}", e);
+                }
+                pb_arc.lock().unwrap().inc();
            }
-            pb.inc();
-        }
-        pb.finish();
-        bdf_file
-            .finish()
-            .expect("failed to finish the writing process");
-    });
+        }));
+    }

    tt.take("creation");
    let re = Regex::new("[\\x00\\x08\\x0B\\x0C\\x0E-\\x1F\\t\\r\\a\\n]").unwrap();
@ -238,9 +212,17 @@ fn create_dictionary(_opts: &Opts, args: &CreateDictionary) {
                .expect("Failed to send value to channel.");
        });

-    if let Err(_err) = handle.join() {
-        println!("Failed to join!");
+    for handle in threads {
+        if let Err(_err) = handle.join() {
+            println!("Failed to join!");
+        }
    }
+    bdf_arc
+        .lock()
+        .unwrap()
+        .finish()
+        .expect("failed to finish the writing process");
+    pb_arc.lock().unwrap().finish();
    println!(
        "Rainbow table creation took {:.2}s",
        tt.since("creation").unwrap().as_secs_f32()
@ -256,48 +238,55 @@ fn spinner(text: &str) -> Spinner {
 /// Decrypts the file using a bdf dictionary
 /// The files content is read chunk by chunk to reduce the memory impact since dictionary
 /// files tend to be several gigabytes in size
-fn decrypt_with_dictionary_file(
-    filename: String,
-    data: &Vec<u8>,
-    data_checksum: &Vec<u8>,
-) -> Option<Vec<u8>> {
+fn decrypt_with_dictionary_file(filename: String, data: &Vec<u8>) -> Option<Vec<u8>> {
    let sp = spinner("Reading dictionary...");
    let f = File::open(&filename).expect("Failed to open dictionary file.");
    let mut bdf_file = BDFReader::new(f);
-    bdf_file
-        .read_metadata()
-        .expect("failed to read the metadata of the file");
+    bdf_file.read_start().expect("failed to read the bdf file");
    let mut chunk_count = 0;
    if let Some(meta) = &bdf_file.metadata {
        chunk_count = meta.chunk_count;
    }
    let mut pb = ProgressBar::new(chunk_count as u64);
-    let (rx, tx) = sync_channel::<Vec<DataEntry>>(100);
-    let _handle = thread::spawn(move || {
-        let mut lookup_table = HashLookupTable::new(HashMap::new());
-        if let Ok(table) = bdf_file.read_lookup_table() {
-            lookup_table = table.clone();
-        }
-        while let Ok(next_chunk) = &mut bdf_file.next_chunk() {
-            if let Ok(entries) = next_chunk.data_entries(&lookup_table) {
-                if let Err(_) = rx.send(entries) {}
+    let bdf_arc = Arc::new(Mutex::new(bdf_file));
+    let mut threads = Vec::new();
+    let (rx, tx) = bounded::<Vec<DataEntry>>(100);
+
+    for _ in 0..(num_cpus::get() as f32 / 4f32).max(1f32) as usize {
+        let rx = rx.clone();
+        let bdf_arc = Arc::clone(&bdf_arc);
+
+        threads.push(thread::spawn(move || {
+            let mut lookup_table = HashLookupTable::new(HashMap::new());
+            if let Some(table) = &bdf_arc.lock().unwrap().lookup_table {
+                lookup_table = table.clone();
            }
-        }
-    });
+            while let Ok(next_chunk) = &mut bdf_arc
+                .lock()
+                .expect("failed to lock bdf_arc to read next chunk")
+                .next_chunk()
+            {
+                if let Ok(entries) = next_chunk.data_entries(&lookup_table) {
+                    if let Err(_) = rx.send(entries) {}
+                }
+            }
+        }));
+    }
+    drop(rx);
    sp.stop();
    let mut result_data: Option<Vec<u8>> = None;
    for entries in tx {
-        let pw_table: Vec<(&String, Vec<u8>)> = entries
+        let pw_table: Vec<(&String, &Vec<u8>)> = entries
            .par_iter()
            .map(|entry: &DataEntry| {
                let pw = &entry.plain;
                let key: &Vec<u8> = entry.get_hash_value(SHA256.to_string()).unwrap();

-                (pw, key[0..8].to_vec())
+                (pw, key)
            })
            .collect();
        pb.inc();
-        if let Some(dec_data) = decrypt_with_dictionary(&data, pw_table, &data_checksum) {
+        if let Some(dec_data) = decrypt_with_dictionary(&data, pw_table) {
            result_data = Some(dec_data);
            break;
        }
@ -314,8 +303,6 @@ fn benchmark() {
        .set_iterations(1_000_000)
        .print_settings()
        .bench("sha256", || test_key = sha256("abcdefghijklmnopqrstuvwxyz"))
-        .bench("sha512", || sha512("abcdefghijklmnopqrstuvwxyz"))
-        .compare()
        .bench("des encrypt", || {
            encrypted = encrypt_data(b"abcdefghijklmnopqrstuvwxyz", &test_key[..8])
        })