Manage customer-managed encryption keys in Acrobat Sign

Last updated on Aug 31, 2026
Alert

This article contains prerelease information. Release dates, features, and other information are subject to change without notice.

Manage the lifecycle of a customer-managed key used for encryption at rest.

After configuring customer-managed encryption keys (BYOK), administrators can manage the key lifecycle, including rotation, suspension, and destruction. These actions affect access to encrypted data.

In the user interface, this feature is labeled Customer Managed Encryption.

Before you begin

  • You must be an account-level administrator.
  • BYOK must already be configured for the account.
  • The configured key must be accessible through AWS Key Management Service (KMS).

To access this setting

  • Navigate to Account Settings > Security Settings > Customer Managed Encryption.
Security Settings page in Acrobat Sign with the Customer Managed Encryption section highlighted, showing fields for AWS access key ID, secret access key, KMS key ARN, and TTL with sample values entered.
Customer Managed Encryption settings with sample values entered for AWS credentials, KMS key ARN, and TTL.

Controls

  • Rotate key
    • Updates the key version used for encryption operations.
  • Revert key
    • Restores the previously used key version.
  • Suspend key
    • Blocks encryption and decryption operations using the configured key.
  • Destroy key
    • Permanently removes access to encrypted content.

Impact:

  • Changes to key state affect access to BYOK-encrypted content after the configured TTL period.

How to manage the key

  • AWS automatic rotation: AWS KMS supports automatic annual rotation for symmetric CMKs. When enabled, AWS generates new key material each year while retaining previous material for decrypting existing data. No changes are required in Acrobat Sign.
  • Manual CMK replacement: If you create a new CMK with a different ARN, update the KMS key ARN and Save. Acrobat Sign validates the new key immediately.
  • Credential rotation: If you rotate your AWS access key, update the AWS access key ID and AWS secret access key, and then Save the configuration. Acrobat Sign validates the new credentials immediately.

If new credentials do not have access to the CMK, the Save operation will fail, and the existing configuration remains unchanged.

  • Disable CMK in AWS KMS: BYOK agreements become inaccessible after the cache TTL expires. All account admins receive an email notification. Reversible by re-enabling the key in AWS KMS.
  • Delete CMK in AWS KMS: Same as disabling, but permanent once the AWS waiting period completes. You can cancel the deletion only during the waiting period.
  • Deactivate IAM credentials in AWS: BYOK agreements become inaccessible after the cache TTL expires. Reversible by reactivating the credentials or entering new ones in Acrobat Sign.
  • Contact Adobe to disable BYOK: Adobe disables the feature and re-encrypts existing BYOK agreements with Adobe-managed keys. You must keep your CMK and credentials active during the re-encryption process.
Alert

To fully disable BYOK and re-encrypt existing agreements with Adobe-managed keys, contact Adobe Support before disabling anything. You must keep your CMK and credentials active until the re-encryption process completes.

Revoking the CMK or disabling credentials makes all BYOK-encrypted agreements inaccessible within the cache TTL period (up to 60 minutes by default).

Failure notifications

When Acrobat Sign detects a CMK failure (for example, a revoked key, invalid credentials, or disabled key), it sends an email notification to all active Account Administrators for the affected account. The email includes the type of failure and steps to resolve the issue. Notifications are rate-limited to one per 24 hours per account to prevent notification fatigue.

Things to know

  • Only agreements created after BYOK is enabled use BYOK encryption. Pre-existing agreements continue to use Adobe-managed encryption.
  • BYOK is only applied at the account level. Keys cannot be configured for individual groups.
  • If the customer-managed key (CMK) becomes unavailable, BYOK-encrypted agreements become inaccessible after the configured TTL period. Agreements not encrypted using BYOK are not affected.
  • The TTL is configurable from 5 to 60 minutes (default 60). 
  • To disable BYOK and re-encrypt existing agreements with Adobe-managed keys, contact Adobe Support before disabling anything. The CMK and credentials must remain active until re-encryption is complete.
  • Use a multi-region CMK can improve availability, as Acrobat Sign operates across multiple AWS regions.