Skip to main content

SecureAuth IdP SHA256 Cloud Web Service


SecureAuth IdP now supports SHA256 hashed certificates to improve security, reliability, and performance of the SecureAuth Cloud Services. Microsoft issued a Security Advisory recommending that Certificate Authorities (CAs) stop using SHA-1 SSL certificates by January 1, 2017, and that customers migrate any SHA-1 SSL and Code Signing certificates to the SHA256 (SHA-2) hashing algorithm at the earliest opportunity.

How / Why SSL Certificates are Used with SecureAuth IdP

1. SecureAuth IdP – SecureAuth Cloud Communication

Communicating through mutual authentication, where the client (SecureAuth IdP) is uniquely identified by the service (SecureAuth Cloud), and the service is uniquely identified by the client

Communications include:

  • SMS

  • Telephony

  • Push

  • User Certificate Signing

2. Browser to IdP Appliance Communication

Utilize secure (HTTPS) browser to web server communications for third-party certificates

3. Profile Data Encryption

Encrypt the user profile data before writing it to a user profile field in the on-premises directory

4. SAML, WS-Federation, and other Assertion Languages Signing and Encryption

Use SSL certificates to sign and encrypt SecureAuth IdP – SaaS communication

Impact to SecureAuth Customers

1. Certificate Renewal

Third-party, publicly-trusted SHA-1 hashed certificates installed on the SecureAuth IdP appliances require renewal or replacement with a SHA-2 SSL certificate

2. Upgrade / Migrate SecureAuth IdP Appliance

Pre-8.1 SecureAuth IdP appliances must be upgraded or migrated to the new cloud services environment

Schedule a maintenance window with SecureAuth Support to upgrade the appliance using the automated tools

3. Root and Intermediate Certificate Authority Certificate Renewal

SSL VPNs or other Gateway devices that utilize SecureAuth-issued native certificates must be updated with the SHA-2 Root and Intermediate CA Certificates


It is recommended that all customers review their environments for the existence of SHA-1 hashed certificates, and replace / renew them as soon as possible

The existing certificates will still be valid through their expiration date, but will need to be replaced with SHA-2 hashed certificates once expired

Most certificate vendors offer renewal services in an effort to address the changes

Key Benefits for SecureAuth Customers

  • Increased security of all encrypted communication

  • Increased support (4x the current capacity) for Certificate Authority (CA) infrastructure

  • Longer certificate validity periods

  • Web Services' support of Windows Communication Foundation (WCF), and additional transports, security scenarios, and WS-* specifications

  • Improved performance

    • Microsoft states that a service migrated from WSE3 to WCF can experience a 200-400% performance improvement

  • No re-enrollment required

More Information

SecureAuth Appliance Certificate Renewal Utility (ACRU)