{"id":8818,"date":"2026-07-17T07:04:16","date_gmt":"2026-07-17T07:04:16","guid":{"rendered":"https:\/\/studysection.com\/blog\/?p=8818"},"modified":"2026-07-17T07:31:14","modified_gmt":"2026-07-17T07:31:14","slug":"what-is-kms-key-rotation","status":"publish","type":"post","link":"https:\/\/studysection.com\/blog\/what-is-kms-key-rotation\/","title":{"rendered":"What is KMS Key Rotation?"},"content":{"rendered":"<p><span style=\"font-weight: 400;\">In <a href=\"https:\/\/blog.webnersolutions.com\/what-is-aws-lambda-runtime\/\" target=\"_blank\" rel=\"noopener\">AWS<\/a> Key Management Service (KMS), <\/span><b>automatic key rotation<\/b><span style=\"font-weight: 400;\">:<\/span><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rotating the <\/span><b>backing key material<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Keep the <\/span><b>same Key ID and ARN<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Does <\/span><b>NOT<\/b><span style=\"font-weight: 400;\"> require re-encrypting existing data<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Does <\/span><b>NOT<\/b><span style=\"font-weight: 400;\"> require any code\/config changes<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Rotation happens <\/span><b>once every year (365 days)<\/b><span style=\"font-weight: 400;\"> automatically.<\/span><\/p>\n<p><b>Enabling Annual Rotation (via AWS Console)<\/b><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-level=\"1\"><span style=\"font-weight: 400;\">Go to <\/span><b>AWS Console<\/b><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-level=\"1\"><span style=\"font-weight: 400;\">Navigate to <\/span><b><a href=\"https:\/\/studysection.com\/blog\/pci-dss-4-0-key-rotation-requirements-explained\/\" target=\"_blank\" rel=\"noopener\">KMS<\/a> \u2192 Customer managed keys<\/b><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-level=\"1\"><span style=\"font-weight: 400;\">Select your <\/span><b>CMK<\/b><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-level=\"1\"><span style=\"font-weight: 400;\">Go to the <\/span><b>Key rotation<\/b><span style=\"font-weight: 400;\"> tab and click <\/span><b>Edit<\/b><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Enable:\u00a0 Automatically rotate this KMS key every year<\/span><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li aria-level=\"1\"><span style=\"font-weight: 400;\">Save<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p><b>Enable via AWS CLI<\/b><\/p>\n<p><span style=\"font-weight: 400;\">aws kms enable-key-rotation &#8211;key-id &lt;your-key-id&gt;<\/span><\/p>\n<p><span style=\"font-weight: 400;\">To verify:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">aws kms get-key-rotation-status &#8211;key-id &lt;your-key-id&gt;<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Expected output:<\/span><\/p>\n<p><span style=\"font-weight: 400;\">{<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u00a0\u00a0\u00a0\u00a0&#8220;KeyRotationEnabled&#8221;: true<\/span><\/p>\n<p><span style=\"font-weight: 400;\">}<\/span><\/p>\n<p><b>Important Notes<\/b><\/p>\n<ul>\n<li style=\"list-style-type: none;\">\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Only works for <\/span><b>Customer Managed Keys<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Not supported for:<\/span>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">AWS Managed Keys<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Imported key material<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"2\"><span style=\"font-weight: 400;\">Asymmetric keys (rotation is not supported)<\/span><\/li>\n<\/ul>\n<\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Rotation is automatic once enabled<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Old key material is retained to decrypt existing data<\/span><\/li>\n<\/ul>\n<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>In AWS Key Management Service (KMS), automatic key rotation: Rotating the backing key material Keep the same Key ID and<\/p>\n","protected":false},"author":1,"featured_media":8821,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[916],"tags":[],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.7 - 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