auth_framework/methods/hardware_token/
mod.rs

1//! Hardware token authentication method
2//!
3//! This module provides hardware token authentication capabilities.
4
5use crate::errors::Result;
6
7/// Hardware token authentication implementation
8pub struct HardwareToken {
9    /// Device identifier
10    pub device_id: String,
11    /// Token type
12    pub token_type: String,
13}
14
15impl HardwareToken {
16    /// Create a new hardware token
17    pub fn new(device_id: String, token_type: String) -> Self {
18        Self {
19            device_id,
20            token_type,
21        }
22    }
23
24    /// Authenticate using hardware token
25    pub async fn authenticate(&self, challenge: &str) -> Result<bool> {
26        // Hardware token authentication implementation
27
28        // Basic validation
29        if challenge.is_empty() {
30            return Ok(false);
31        }
32
33        // Simulate hardware token authentication process
34        match self.token_type.as_str() {
35            "yubikey" => {
36                // YubiKey authentication simulation
37                tracing::info!("Authenticating with YubiKey device: {}", self.device_id);
38
39                // In a real implementation, this would:
40                // 1. Send challenge to YubiKey device
41                // 2. Wait for user to touch the device
42                // 3. Validate the cryptographic response
43
44                // Simulate cryptographic validation
45                self.validate_yubikey_response(challenge).await
46            }
47            "fido2" => {
48                // FIDO2/WebAuthn hardware token
49                tracing::info!("Authenticating with FIDO2 device: {}", self.device_id);
50
51                // In a real implementation, this would:
52                // 1. Validate the FIDO2 assertion
53                // 2. Check device attestation
54                // 3. Verify user presence/verification flags
55
56                self.validate_fido2_assertion(challenge).await
57            }
58            "smart_card" => {
59                // Smart card authentication
60                tracing::info!("Authenticating with smart card: {}", self.device_id);
61
62                // In a real implementation, this would:
63                // 1. Validate smart card certificate
64                // 2. Perform challenge-response with card
65                // 3. Check card status and expiration
66
67                self.validate_smart_card(challenge).await
68            }
69            "piv_card" => {
70                // PIV (Personal Identity Verification) card
71                tracing::info!("Authenticating with PIV card: {}", self.device_id);
72
73                // Validate PIV card authentication
74                self.validate_piv_card(challenge).await
75            }
76            _ => {
77                tracing::warn!("Unknown hardware token type: {}", self.token_type);
78                Ok(false)
79            }
80        }
81    }
82
83    /// Validate YubiKey response
84    async fn validate_yubikey_response(&self, challenge: &str) -> Result<bool> {
85        // Simulate YubiKey validation
86        tracing::debug!("Validating YubiKey response for challenge: {}", challenge);
87
88        // In production, this would validate the OTP or FIDO response
89        // For now, simulate based on challenge format
90        if challenge.starts_with("cccc") && challenge.len() == 44 {
91            tracing::info!("YubiKey OTP validation successful");
92            Ok(true)
93        } else {
94            tracing::warn!("YubiKey validation failed - invalid response format");
95            Ok(false)
96        }
97    }
98
99    /// Validate FIDO2 assertion
100    async fn validate_fido2_assertion(&self, challenge: &str) -> Result<bool> {
101        tracing::debug!("Validating FIDO2 assertion for device: {}", self.device_id);
102
103        // In production, this would:
104        // 1. Parse the FIDO2 assertion
105        // 2. Verify signature using device's public key
106        // 3. Check authenticator data and client data hash
107
108        // Simulate validation based on challenge structure
109        if challenge.len() >= 32 && challenge.contains("webauthn") {
110            tracing::info!("FIDO2 assertion validation successful");
111            Ok(true)
112        } else {
113            tracing::warn!("FIDO2 validation failed - invalid assertion");
114            Ok(false)
115        }
116    }
117
118    /// Validate smart card authentication
119    async fn validate_smart_card(&self, challenge: &str) -> Result<bool> {
120        tracing::debug!(
121            "Validating smart card authentication for: {}",
122            self.device_id
123        );
124
125        // In production, this would:
126        // 1. Validate smart card certificate chain
127        // 2. Perform PKI challenge-response
128        // 3. Check card revocation status
129
130        // Simulate PKI validation
131        if challenge.len() >= 16 && challenge.chars().all(|c| c.is_ascii_alphanumeric()) {
132            tracing::info!("Smart card authentication successful");
133            Ok(true)
134        } else {
135            tracing::warn!("Smart card validation failed");
136            Ok(false)
137        }
138    }
139
140    /// Validate PIV card authentication
141    async fn validate_piv_card(&self, challenge: &str) -> Result<bool> {
142        tracing::debug!("Validating PIV card for device: {}", self.device_id);
143
144        // PIV (Personal Identity Verification) validation
145        // In production, this would follow NIST SP 800-73 standards
146
147        if challenge.len() >= 8 && challenge.starts_with("PIV") {
148            tracing::info!("PIV card authentication successful");
149            Ok(true)
150        } else {
151            tracing::warn!("PIV card validation failed");
152            Ok(false)
153        }
154    }
155}
156
157
auth_framework/methods/hardware_token/mod.rs

auth_framework/methods/hardware_token/
mod.rs
