Phase 5
5G SUCI Security Features
Comprehensive guide to 5G SUCI (Subscription Concealed Identifier) encryption, authentication algorithms, and advanced security features for modern telecommunications.
Security Overview
Advanced security features protecting modern telecommunications infrastructure
5G SUCI Encryption
Advanced Subscription Concealed Identifier encryption for enhanced privacy protection
active
critical
Authentication Algorithms
MILENAGE, COMP128, and modern cryptographic protocols
active
high
Key Management
Secure key provisioning and lifecycle management
active
high
Network Security
End-to-end encryption and secure communication protocols
active
medium
Device Security
Hardware security modules and tamper-resistant design
active
medium
Data Protection
Comprehensive data encryption and access controls
active
high
4
Critical CVEs
3
High Severity
2
Medium Severity
1
Low Severity
5G SUCI (Subscription Concealed Identifier) provides enhanced privacy protection by concealing the subscriber's identity during initial network access.
Privacy Protection
Conceals subscriber identity
Prevents tracking and profiling
Enhanced user privacy
Routing Indicator
Network routing optimization
Load balancing support
Efficient resource allocation
Advanced Security Analysis
Deep dive into vulnerability exploitation techniques and mitigation strategies
Vulnerability Categories
Authentication Bypass
• Weak algorithm implementation
• Key extraction techniques
• Replay attack vectors
• Man-in-the-middle attacks
Data Extraction
• File system access
• APDU command injection
• Memory dump analysis
• Side-channel attacks
Network Attacks
• Signaling plane attacks
• Diameter protocol exploits
• SS7 vulnerabilities
• IMSI catching techniques
Exploitation Techniques
Physical Access Attacks
Microprobing and circuit analysis
Laser fault injection
Power analysis attacks
Timing analysis
Remote Attacks
OTA update manipulation
SMS-based attacks
Network protocol exploits
Social engineering
Mitigation Strategies
Prevention
• Strong authentication algorithms
• Secure key management
• Regular security audits
• Hardware security modules
Detection
• Anomaly detection systems
• Real-time monitoring
• Behavioral analysis
• Threat intelligence
Response
• Incident response plans
• Rapid containment
• Forensic analysis
• Recovery procedures
5G SUCI Implementation Deep Dive
Comprehensive guide to Subscription Concealed Identifier implementation and security considerations
SUCI Components & Architecture
SUCI Structure
- • SUPI: Subscription Permanent Identifier (IMSI)
- • Protection Scheme: Encryption algorithm identifier
- • Home Network Public Key: Public key for encryption
- • Routing Indicator: Network routing information
- • Protection Scheme Output: Encrypted SUPI data
ECIES Encryption Process
- • Key Generation: Ephemeral key pair creation
- • Key Agreement: Shared secret derivation
- • Encryption: SUPI encryption with public key
- • MAC Generation: Message authentication code
- • Output Format: Ciphertext + ephemeral key
Protection Schemes
- • Scheme 0: Null scheme (no protection)
- • Scheme 1: Profile A (ECIES with curve P-256)
- • Scheme 2: Profile B (ECIES with curve P-384)
- • Scheme 3: Profile C (ECIES with curve P-521)
Security Benefits
- • Privacy Protection: Prevents subscriber tracking
- • Identity Concealment: Hides IMSI from eavesdroppers
- • Replay Protection: Prevents replay attacks
- • Forward Secrecy: Ephemeral key usage
Advanced Threat Analysis
Vulnerability Categories
Authentication Bypass
- • Weak algorithm implementation
- • Key compromise attacks
- • Replay attack vulnerabilities
- • Man-in-the-middle attacks
Data Extraction
- • Side-channel attacks
- • Memory dump analysis
- • Fault injection attacks
- • Reverse engineering
Network Attacks
- • Signaling attacks
- • DoS/DDoS attacks
- • Protocol vulnerabilities
- • Interception attacks
Exploitation Techniques
Physical Access Attacks
- • Hardware tampering
- • Chip decapsulation
- • Microprobing
- • Laser fault injection
Remote Attacks
- • OTA command injection
- • Malicious app installation
- • Network protocol attacks
- • Social engineering
Mitigation Strategies
Prevention
- • Strong cryptographic algorithms
- • Secure key management
- • Hardware security modules
- • Regular security updates
Detection
- • Anomaly detection systems
- • Intrusion detection
- • Security monitoring
- • Audit logging
Response
- • Incident response procedures
- • Forensic analysis
- • Recovery mechanisms
- • Lessons learned