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refactor: secret as 32 byte hex

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This commit is contained in:
thesimplekid
2023-11-26 19:15:50 +00:00
parent ab5fdc44a1
commit 08114cb0ba
1 changed files with 7 additions and 10 deletions
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17
crates/cashu/src/secret.rs
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@@ -25,21 +25,19 @@ impl Default for Secret {
}
impl Secret {
const BIT_LENGTH: usize = 128;
/// Create secret value
/// Generate a new random secret as the recommended 32 byte hex
pub fn new() -> Self {
use base64::engine::general_purpose::URL_SAFE;
use base64::Engine as _;
use rand::RngCore;
let mut rng = rand::thread_rng();
let mut random_bytes = [0u8; Self::BIT_LENGTH / 8];
let mut random_bytes = [0u8; 32];
// Generate random bytes
rng.fill_bytes(&mut random_bytes);
// The secret string is Base64-encoded
let secret = URL_SAFE.encode(random_bytes);
// The secret string is hex encoded
let secret = hex::encode(random_bytes);
Self(secret)
}
@@ -52,10 +50,6 @@ impl FromStr for Secret {
type Err = Error;
fn from_str(s: &str) -> Result<Self, Self::Err> {
if s.len().ne(&24) {
return Err(Error::InvalidLength(s.as_bytes().len() as u64));
}
Ok(Secret(s.to_string()))
}
}
@@ -68,6 +62,7 @@ impl ToString for Secret {
#[cfg(test)]
mod tests {
use std::assert_eq;
use std::str::FromStr;
use super::*;
@@ -78,6 +73,8 @@ mod tests {
let secret_str = secret.to_string();
assert_eq!(hex::decode(secret_str.clone()).unwrap().len(), 32);
let secret_n = Secret::from_str(&secret_str).unwrap();
assert_eq!(secret_n, secret)