Create separate Cracker crate

Cargo.toml

@@ -1,5 +1,5 @@
 [workspace]
-members = ["crates/producer"]
+members = [ "crates/cracker","crates/producer"]
 
 [workspace.package]
 version = "2.0.1"
@@ -9,6 +9,7 @@ authors = ["Mufeed VH <[email protected]>", "Pommaq"]
 [workspace.dependencies]
 bytecount = "0.6.7"
 log = "0.4.19"
+pdf = "0.8.1"
 
 
 [package]
@@ -25,9 +26,9 @@ anyhow = "1.0.72"
 crossbeam = "0.8.2"
 pretty_env_logger = "0.5.0"
 colored = "2.0.4"
-pdf = "0.8.1"
 bytecount.workspace = true
 clap = { version = "4.4.13", features = ["derive"] }
+pdf.workspace = true
 
 [profile.release]
 lto = 'thin'

crates/cracker/Cargo.toml

@@ -0,0 +1,11 @@
+[package]
+name = "cracker"
+version.workspace = true
+edition.workspace = true
+authors.workspace = true
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+log.workspace = true
+pdf.workspace = true

crates/cracker/src/lib.rs

@@ -0,0 +1,23 @@
+use std::{fs, io};
+
+use pdf::file::FileOptions;
+
+#[derive(Clone)]
+pub struct PDFCracker(Vec<u8>);
+
+impl PDFCracker {
+    pub fn from_file(path: &str) -> Result<Self, io::Error> {
+        let pdf_file: Vec<u8> = fs::read(path)?;
+        Ok(Self(pdf_file))
+    }
+}
+
+impl PDFCracker {
+    /// Attempt to crack the cryptography using the password, return true on success.
+    pub fn attempt(&self, password: &[u8]) -> bool {
+        FileOptions::cached()
+            .password(password)
+            .load(self.0.as_ref())
+            .is_ok()
+    }
+}