Struct Argon2Hasher 

pub struct Argon2Hasher { /* private fields */ }

Configurable Argon2id hasher.

Implementations

impl Argon2Hasher

pub fn new_recommended() -> Result<Self>

Creates a new instance with recommended settings based on the current build (dev/release).

pub fn from_config(config: Argon2Config) -> Result<Self>

Create from explicit configuration.

pub fn from_preset(preset: Argon2Preset) -> Result<Self>

Create from a preset.

pub fn config(&self) -> &Argon2Config

Return current configuration.

pub fn high_security() -> Result<Self>

Maximum security hasher for production environments.

Parameters:

• Memory: 64 MiB (65,536 KiB)
• Time cost: 3 iterations
• Parallelism: 1 thread

Use cases:

• Production servers with sufficient memory
• High-value accounts requiring maximum security
• Applications where authentication latency is acceptable (~100-200ms)

Security: Provides excellent protection against brute-force attacks and rainbow tables, suitable for protecting sensitive user credentials.

Performance: Slowest option, designed for security over speed.

pub fn interactive() -> Result<Self>

Balanced hasher for interactive applications.

Parameters:

• Memory: 32 MiB (32,768 KiB)
• Time cost: 2 iterations
• Parallelism: 1 thread

Use cases:

• Web applications with user-facing login forms
• Mobile applications where response time matters
• Services with moderate security requirements
• Memory-constrained production environments

Security: Good security level, still resistant to most attacks while providing reasonable authentication response times.

Performance: Moderate speed (~50-100ms), good balance of security and usability.

pub fn dev_fast() -> Result<Self>

Fast hasher for development and testing only.

⚠️ WARNING: DO NOT USE IN PRODUCTION

Parameters:

• Memory: 4 MiB (4,096 KiB)
• Time cost: 1 iteration
• Parallelism: 1 thread

Use cases:

• Local development to speed up test cycles
• Unit tests that need fast password hashing
• CI/CD pipelines to reduce build times
• Debug builds (automatically used by default())

Security: ⚠️ Insufficient for production use - vulnerable to brute-force attacks

Performance: Very fast (~5-20ms), prioritizes development speed over security.

This preset is only available in debug builds or when the insecure-fast-hash feature is explicitly enabled.

Trait Implementations

impl Clone for Argon2Hasher

fn clone(&self) -> Argon2Hasher

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl HashingService for Argon2Hasher

fn hash_value(&self, plain_value: &str) -> Result<HashedValue>

Hash a plaintext secret into an opaque, self‑contained representation.

fn verify_value( &self, plain_value: &str, hashed_value: &str, ) -> Result<VerificationResult>

Verify a plaintext input against a previously produced hash.