pub struct RawMd5;
use crate::hashes::{AttackModeType, HashModule, HashPattern, ParsedHash};
impl HashModule for RawMd5 {
fn name(&self) -> &'static str { "raw-md5" }
fn mode(&self) -> u32 { 0 }
fn digest_words(&self) -> u32 { 4 }
fn needs_int64(&self) -> bool { false }
fn cpu_verify(&self, password: &str, salt: &[u8], hash: &[u32]) -> bool {
use md5::{Digest, Md5};
let mut hasher = Md5::new();
hasher.update(password.as_bytes());
hasher.update(salt);
let result = hasher.finalize();
let mut computed = [0u32; 4];
for i in 0..4 {
computed[i] = u32::from_le_bytes(result[i * 4..i * 4 + 4].try_into().unwrap());
}
computed == hash[..4]
}
fn shader_source(&self, mode: &AttackModeType) -> &'static str {
match mode {
AttackModeType::BruteForce => include_str!("../md5_crack.wgsl"),
AttackModeType::Mask => include_str!("../md5_mask.wgsl"),
AttackModeType::Wordlist => include_str!("../md5_wordlist.wgsl"),
}
}
fn detect_patterns(&self) -> &[HashPattern] {
&[HashPattern { prefix: None, hex_len: Some(32), priority: 100 }]
}
fn parse_hash_string(&self, s: &str) -> Result<ParsedHash, String> {
let clean = s.trim().strip_prefix("0x").unwrap_or(s.trim());
if clean.len() != 32 {
return Err(format!("Expected 32 hex chars for MD5, got {}", clean.len()));
}
let mut target = [0u32; 8];
for i in 0..4 {
let word = u32::from_str_radix(&clean[i * 8..i * 8 + 8], 16)
.map_err(|_| format!("Invalid hex at position {}", i * 8))?;
target[i] = word.swap_bytes();
}
Ok(ParsedHash {
hash_words: target,
extra_words: [0u32; 8],
salt: Vec::new(),
digest_words: 4,
})
}
}
#[cfg(test)]
mod tests {
use super::*;
use crate::hashes::HashModule;
use md5::Digest;
#[test]
fn test_md5_roundtrip() {
let m = RawMd5;
let pw = "hello";
let mut hasher = md5::Md5::new();
hasher.update(pw.as_bytes());
let result = hasher.finalize();
let hex_str = hex::encode(result);
let parsed = m.parse_hash_string(&hex_str).unwrap();
assert!(m.cpu_verify(pw, &[], &parsed.hash_words));
assert!(!m.cpu_verify("wrong", &[], &parsed.hash_words));
}
}