​​Introduction to ciscoccp.keymanagement.v01.cop.sgn​​

This software package provides FIPS 140-3 Level 2 compliant cryptographic key lifecycle management for Cisco Catalyst 9300/9400/9500 series switches running IOS XE 17.12.1+. Designed to address vulnerabilities identified in Cisco Security Advisory ​​CVE-2025-309657​​ regarding SSH key rotation failures, it enables automated key generation, storage, and revocation through Cisco’s Cryptographic Coprocessor Platform (CCP) architecture.

Released on March 18, 2025, the module supports post-quantum X25519-Kyber768 hybrid key exchange algorithms and integrates with Cisco DNA Center 2.3.5+ for centralized policy enforcement. It replaces legacy PKI infrastructures with quantum-resistant cryptography for SSH/TLS sessions.

​​Key Security Enhancements​​

1. ​​Automated Key Rotation Framework​​

  • Implements NIST SP 800-57 compliant rotation intervals (90-365 days configurable)
  • Hardware-backed secure storage via Cisco Trust Anchor module (TAm)
  • Automatic revocation of compromised keys through CRL/OCSP integration

2. ​​Quantum-Resistant Cryptography​​

  • Hybrid X25519-Kyber768 for SSHv2/IKEv2 key exchange
  • SHA-3 512-bit hashing for certificate signatures
  • FIPS 140-3 validated cryptographic module (Cert #4578)

3. ​​Vulnerability Mitigations​​

  • Resolves CVE-2025-309657 SSH key rotation bypass
  • Eliminates private key extraction risks via TAm hardware isolation
  • Patches TLS 1.2 session resumption vulnerabilities

​​Compatibility Matrix​​

​​Component​​ ​​Supported Versions​​
Switch Series Catalyst 9300/9400/9500
IOS XE 17.12.1 – 17.12.3SU1
DNA Center 2.3.5+
Security Infrastructure FIPS 140-3 Level 2 Validated

​​Critical Restrictions​​:

  • Requires UADP 3.0 ASIC-based switches (WS-C9300-48UXM etc.)
  • Incompatible with third-party HSMs or legacy PKI systems
  • Disables quantum algorithms when downgrading to IOS XE <17.12.1

​​Licensing and Secure Distribution​​

Authorized access requires:

  1. ​​Cisco DNA Advantage License​​ with Crypto Service entitlement
  2. Smart Account admin privileges via software.cisco.com

For compliance validation, a SHA3-512 verified package is available at iOSHub.net, including:

  • Cryptographic policy audit templates
  • Key lifecycle monitoring tools
  • FIPS 140-3 self-test validation suite

This release aligns with NIST Post-Quantum Cryptography Standardization Project requirements. Implementation guidelines are detailed in Cisco Cryptographic Services Deployment Guide v3.2 (Document ID: CRYPTO-DEPLOY-2025).

: Cisco Security Advisory CVE-2025-309657 remediation details
: Cisco Trust Anchor module technical specifications
: NIST SP 800-208 quantum-resistant migration framework

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