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Merge gcm_crack #32

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0xalivecow merged 3 commits from dev into main 2024-12-03 16:18:15 +00:00
Conversation 0 Commits 3 Files changed 8 +4 -13
1 changed files with 4 additions and 13 deletions
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Showing only changes of commit b348c19c6c - Show all commits

17
src/tasks/tasks01/gcm_crack.rs
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@ -35,13 +35,11 @@ struct Message {
fn parse_message(val: &Value) -> Result<(Message, Polynomial)> { fn parse_message(val: &Value) -> Result<(Message, Polynomial)> {
let ciphertext_text: String = serde_json::from_value(val["ciphertext"].clone())?; let ciphertext_text: String = serde_json::from_value(val["ciphertext"].clone())?;
let ciphertext_bytes: Vec<u8> = BASE64_STANDARD.decode(ciphertext_text)?; let ciphertext_bytes: Vec<u8> = BASE64_STANDARD.decode(ciphertext_text)?;
let mut ciphertext_chunks: Vec<FieldElement> = ciphertext_bytes let ciphertext_chunks: Vec<FieldElement> = ciphertext_bytes
.chunks(16) .chunks(16)
.into_iter() .into_iter()
.map(|chunk| FieldElement::new(chunk.to_vec())) .map(|chunk| FieldElement::new(chunk.to_vec()))
.collect(); .collect();
//ciphertext_chunks;
let ciphertext: Polynomial = Polynomial::new(ciphertext_chunks.clone());
let ad_text: String = serde_json::from_value(val["associated_data"].clone())?; let ad_text: String = serde_json::from_value(val["associated_data"].clone())?;
let mut ad_bytes: Vec<u8> = BASE64_STANDARD.decode(ad_text)?; let mut ad_bytes: Vec<u8> = BASE64_STANDARD.decode(ad_text)?;
@ -50,18 +48,15 @@ fn parse_message(val: &Value) -> Result<(Message, Polynomial)> {
if ad_bytes.len() % 16 != 0 || ad_bytes.is_empty() { if ad_bytes.len() % 16 != 0 || ad_bytes.is_empty() {
ad_bytes.append(vec![0u8; 16 - (ad_bytes.len() % 16)].as_mut()); ad_bytes.append(vec![0u8; 16 - (ad_bytes.len() % 16)].as_mut());
} }
let mut ad_chunks: Vec<FieldElement> = ad_bytes let ad_chunks: Vec<FieldElement> = ad_bytes
.chunks(16) .chunks(16)
.into_iter() .into_iter()
.map(|chunk| FieldElement::new(chunk.to_vec())) .map(|chunk| FieldElement::new(chunk.to_vec()))
.collect(); .collect();
//ad_chunks;
let ad: Polynomial = Polynomial::new(ad_chunks.clone());
let tag_text: String = serde_json::from_value(val["tag"].clone()).unwrap_or("".to_string()); let tag_text: String = serde_json::from_value(val["tag"].clone()).unwrap_or("".to_string());
let tag_bytes: Vec<u8> = BASE64_STANDARD.decode(tag_text)?; let tag_bytes: Vec<u8> = BASE64_STANDARD.decode(tag_text)?;
let tag_field: FieldElement = FieldElement::new(tag_bytes.clone()); let tag_field: FieldElement = FieldElement::new(tag_bytes.clone());
let tag: Polynomial = Polynomial::new(vec![tag_field.clone()]);
let mut c_len: Vec<u8> = ((ciphertext_bytes.len() * 8) as u64).to_be_bytes().to_vec(); let mut c_len: Vec<u8> = ((ciphertext_bytes.len() * 8) as u64).to_be_bytes().to_vec();
l_field.append(c_len.as_mut()); l_field.append(c_len.as_mut());
@ -90,16 +85,12 @@ fn parse_message(val: &Value) -> Result<(Message, Polynomial)> {
} }
pub fn gcm_crack(args: &Value) -> Result<CrackAnswer> { pub fn gcm_crack(args: &Value) -> Result<CrackAnswer> {
let nonce: String = serde_json::from_value(args["nonce"].clone())?;
let crack_poly: Polynomial = Polynomial::empty();
// Prepare first equation // Prepare first equation
let (m1_data, m1_h_poly) = parse_message(&args["m1"])?; let (m1_data, m1_h_poly) = parse_message(&args["m1"])?;
let (m2_data, m2_h_poly) = parse_message(&args["m2"])?; let (_, m2_h_poly) = parse_message(&args["m2"])?;
let (m3_data, m3_h_poly) = parse_message(&args["m3"])?; let (m3_data, _) = parse_message(&args["m3"])?;
eprintln!("m1 poly: {:?}", m1_h_poly.clone().to_c_array()); eprintln!("m1 poly: {:?}", m1_h_poly.clone().to_c_array());
eprintln!("m2 poly: {:?}", m2_h_poly.clone().to_c_array()); eprintln!("m2 poly: {:?}", m2_h_poly.clone().to_c_array());