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feat(aes-cbc): embed IV in encrypted output

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Kristofers Solo
2026-01-11 20:24:16 +02:00
parent 8490e594ea
commit 6eb3668147
4 changed files with 75 additions and 54 deletions
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64
web/src/components/cipher_form_cbc.rs
View File

@@ -47,13 +47,16 @@ pub fn CipherFormCbc() -> AnyView {
return;
}
if iv.is_empty() {
set_error_msg("Please enter an initialization vector (IV).".to_string());
return;
}
// Format IV with 0x prefix (key keeps user format, IV is always hex)
let formatted_iv = format!("0x{iv}");
// IV is only required for encryption (it's embedded in ciphertext for decryption)
let formatted_iv = if mode.get() == OperationMode::Encrypt {
if iv.is_empty() {
set_error_msg("Please enter an initialization vector (IV).".to_string());
return;
}
format!("0x{iv}")
} else {
String::new()
};
// Get input data
let input_data = match input_mode.get() {
@@ -97,29 +100,24 @@ pub fn CipherFormCbc() -> AnyView {
Err(e) => set_error_msg(e.to_string()),
}
}
OperationMode::Decrypt => {
match Algorithm::AesCbc.decrypt_cbc(&key, &formatted_iv, &input_data) {
Ok(plaintext) => {
set_output_bytes(Some(plaintext.clone()));
let formatted = match output_fmt.get() {
OutputFormat::Text => {
String::from_utf8(plaintext).unwrap_or_else(|_| {
set_error_msg(
"Output contains invalid UTF-8. Try Hex format."
.to_string(),
);
String::new()
})
}
OutputFormat::Hex => bytes_to_hex(&plaintext),
OutputFormat::Binary => bytes_to_binary(&plaintext),
OutputFormat::Octal => bytes_to_octal(&plaintext),
};
set_output(formatted);
}
Err(e) => set_error_msg(e.to_string()),
OperationMode::Decrypt => match Algorithm::AesCbc.decrypt_cbc(&key, &input_data) {
Ok(plaintext) => {
set_output_bytes(Some(plaintext.clone()));
let formatted = match output_fmt.get() {
OutputFormat::Text => String::from_utf8(plaintext).unwrap_or_else(|_| {
set_error_msg(
"Output contains invalid UTF-8. Try Hex format.".to_string(),
);
String::new()
}),
OutputFormat::Hex => bytes_to_hex(&plaintext),
OutputFormat::Binary => bytes_to_binary(&plaintext),
OutputFormat::Octal => bytes_to_octal(&plaintext),
};
set_output(formatted);
}
}
Err(e) => set_error_msg(e.to_string()),
},
}
};
@@ -164,7 +162,13 @@ pub fn CipherFormCbc() -> AnyView {
update_output=update_output
/>
<KeyInput key_input=key_input set_key_input=set_key_input key_size=KeySize::Aes128 />
<IvInput iv_input=iv_input set_iv_input=set_iv_input />
{move || {
if mode.get() == OperationMode::Encrypt {
view! { <IvInput iv_input=iv_input set_iv_input=set_iv_input /> }.into_any()
} else {
view! { <span></span> }.into_any()
}
}}
<FileTextInput
input_mode=input_mode