Struct dryoc::pwhash::PwHash

pub struct PwHash<Hash: Bytes + Zeroize, Salt: Bytes + Zeroize> { /* private fields */ }

Password hash implementation based on Argon2, compatible with libsodium’s crypto_pwhash_* functions.

Implementations

impl<Hash: NewBytes + ResizableBytes + Zeroize, Salt: NewBytes + ResizableBytes + Zeroize> PwHash<Hash, Salt>

pub fn hash<Password: Bytes>( password: &Password, config: Config, ) -> Result<Self, Error>

Hashes password with a random salt and config, returning the hash, salt, and config upon success.

pub fn hash_interactive<Password: Bytes>( password: &Password, ) -> Result<Self, Error>

Hashes password with a random salt and a default configuration suitable for interactive hashing, returning the hash, salt, and config upon success.

pub fn hash_moderate<Password: Bytes>( password: &Password, ) -> Result<Self, Error>

Hashes password with a random salt and a default configuration suitable for moderate hashing, returning the hash, salt, and config upon success.

pub fn hash_sensitive<Password: Bytes>( password: &Password, ) -> Result<Self, Error>

Hashes password with a random salt and a default configuration suitable for sensitive hashing, returning the hash, salt, and config upon success.

pub fn to_string(&self) -> String

Available on crate feature base64 only.

Returns a string-encoded representation of this hash, salt, and config, suitable for storage in a database.

It’s recommended that you use the Serde support instead of this function, however this function is provided for compatiblity reasons.

The string returned is compatible with libsodium’s crypto_pwhash_str, crypto_pwhash_str_verify, and crypto_pwhash_str_needs_rehash functions, but only when the hash and salt length values match those supported by libsodium. This implementation supports variable-length salts and hashes, but libsodium’s does not.

Example

use dryoc::pwhash::*;

let password = b"Come what come may, time and the hour runs through the roughest day.";

let pwhash = PwHash::hash_with_defaults(password).expect("unable to hash");
let pw_string = pwhash.to_string();

let parsed_pwhash =
    PwHash::from_string_with_defaults(&pw_string).expect("couldn't parse hashed password");

parsed_pwhash.verify(password).expect("verification failed");
parsed_pwhash
    .verify(b"invalid password")
    .expect_err("verification should have failed");

impl<Hash: NewBytes + ResizableBytes + Zeroize, Salt: Bytes + Clone + Zeroize> PwHash<Hash, Salt>

pub fn verify<Password: Bytes>(&self, password: &Password) -> Result<(), Error>

Verifies that this hash, salt, and config is valid for password.

pub fn hash_with_salt<Password: Bytes>( password: &Password, salt: Salt, config: Config, ) -> Result<Self, Error>

Hashes password with salt and config, returning the hash, salt, and config upon success.

impl<Hash: Bytes + From<Vec<u8>> + Zeroize, Salt: Bytes + From<Vec<u8>> + Zeroize> PwHash<Hash, Salt>

pub fn from_string(hashed_password: &str) -> Result<Self, Error>

Available on crate feature base64 only.

Creates a new password hash instance by parsing hashed_password. Compatible with libsodium’s crypto_pwhash_str* functions, and supports variable-length encoding for the hash and salt.

It’s recommended that you use the Serde support instead of this function, however this function is provided for compatiblity reasons.

impl<Hash: Bytes + Zeroize, Salt: Bytes + Zeroize> PwHash<Hash, Salt>

pub fn from_parts(hash: Hash, salt: Salt, config: Config) -> Self

Constructs a new instance from hash, salt, and config, consuming them.

pub fn into_parts(self) -> (Hash, Salt, Config)

Moves the hash, salt, and config out of this instance, returning them as a tuple.

impl<Salt: Bytes + Zeroize> PwHash<Hash, Salt>

pub fn derive_keypair<Password: Bytes + Zeroize, PublicKey: NewByteArray<CRYPTO_BOX_PUBLICKEYBYTES> + Zeroize, SecretKey: NewByteArray<CRYPTO_BOX_SECRETKEYBYTES> + Zeroize>( password: &Password, salt: Salt, config: Config, ) -> Result<KeyPair<PublicKey, SecretKey>, Error>

Derives a keypair from password and salt, using config.

impl PwHash<Hash, Salt>

pub fn hash_with_defaults<Password: Bytes>( password: &Password, ) -> Result<Self, Error>

Hashes password using default (interactive) config parameters, returning the Vec<u8>-based hash and salt, with config, upon success.

This function provides reasonable defaults, and is provided for convenience.

pub fn from_string_with_defaults(hashed_password: &str) -> Result<Self, Error>

Available on crate feature base64 only.

Parses the hashed_password string, returning a new hash instance upon success. Wraps PwHash::from_string, provided for convenience.

Trait Implementations

impl<Hash: Clone + Bytes + Zeroize, Salt: Clone + Bytes + Zeroize> Clone for PwHash<Hash, Salt>

fn clone(&self) -> PwHash<Hash, Salt>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<Hash: Debug + Bytes + Zeroize, Salt: Debug + Bytes + Zeroize> Debug for PwHash<Hash, Salt>

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de, Hash, Salt> Deserialize<'de> for PwHash<Hash, Salt>

where Hash: Deserialize<'de> + Bytes + Zeroize, Salt: Deserialize<'de> + Bytes + Zeroize,

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl<Hash, Salt> Serialize for PwHash<Hash, Salt>

where Hash: Serialize + Bytes + Zeroize, Salt: Serialize + Bytes + Zeroize,

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl<Hash, Salt> Zeroize for PwHash<Hash, Salt>

where Hash: Zeroize + Bytes, Salt: Zeroize + Bytes,

fn zeroize(&mut self)

Zero out this object from memory using Rust intrinsics which ensure the zeroization operation is not “optimized away” by the compiler.