sha-crypt: export CheckError (#724)

Closes #722

Author: tarcieri

sha-crypt/src/errors.rs

@@ -44,11 +44,17 @@ impl fmt::Display for CryptError {
     }
 }
 
+/// Errors which occur when verifying passwords.
 #[cfg(feature = "simple")]
 #[derive(Debug)]
 pub enum CheckError {
+    /// Format is invalid.
     InvalidFormat(String),
+
+    /// Cryptographic error.
     Crypt(CryptError),
+
+    /// Password hash doesn't match (invalid password).
     HashMismatch,
 }
 

sha-crypt/src/lib.rs

@@ -54,9 +54,12 @@ pub use crate::{
 use alloc::{string::String, vec::Vec};
 use sha2::{Digest, Sha256, Sha512};
 
+#[cfg(feature = "simple")]
+pub use crate::errors::{CheckError, DecodeError};
+
 #[cfg(feature = "simple")]
 use {
-    crate::{defs::SALT_MAX_LEN, errors::CheckError},
+    crate::defs::SALT_MAX_LEN,
     alloc::string::ToString,
     base64ct::{Base64ShaCrypt, Encoding},
     rand_core::{OsRng, RngCore, TryRngCore},