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Change argon2 salt length to recommended value (16 bytes) (#275)

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This commit changes the `Ksf` implementation for Argon2
and sets the salt length to 16 bytes, the value
recommended in section 3.1 of the Argon2 specification.
This commit is contained in:
Falko
2022-06-12 20:19:26 -07:00
committed by GitHub
parent 6e90913132
commit 5a0aef607c
1 changed files with 5 additions and 1 deletions
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src/ksf.rs
+5 -1
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@@ -11,6 +11,10 @@ use generic_array::{ArrayLength, GenericArray};
use crate::errors::InternalError; use crate::errors::InternalError;
/// Recommended salt length for argon2-based password hashing.
#[cfg(feature = "argon2")]
const ARGON2_RECOMMENDED_SALT_LEN: usize = 16;
/// Used for the key stretching function in OPAQUE /// Used for the key stretching function in OPAQUE
pub trait Ksf: Default { pub trait Ksf: Default {
/// Computes the key stretching function /// Computes the key stretching function
@@ -40,7 +44,7 @@ impl Ksf for argon2::Argon2<'_> {
input: GenericArray<u8, L>, input: GenericArray<u8, L>,
) -> Result<GenericArray<u8, L>, InternalError> { ) -> Result<GenericArray<u8, L>, InternalError> {
let mut output = GenericArray::default(); let mut output = GenericArray::default();
self.hash_password_into(&input, &[0; argon2::MIN_SALT_LEN], &mut output) self.hash_password_into(&input, &[0; ARGON2_RECOMMENDED_SALT_LEN], &mut output)
.map_err(|_| InternalError::KsfError)?; .map_err(|_| InternalError::KsfError)?;
Ok(output) Ok(output)
} }