Monitoring requests for NitroTPM - AWS Key Management Service
Decrypt (for a NitroTPM)GenerateDataKey (for a NitroTPM)GenerateDataKeyPair (for a NitroTPM)GenerateRandom (for a NitroTPM)

Monitoring requests for NitroTPM

For NitroTPM attestation, the CloudTrail log includes the module ID (attestationDocumentModuleId) and platform configuration registers (PCRs) from the attestation document.

The module ID is the ID of the EC2 instance with NitroTPM with a TPM identifier. You can use the PCR values in conditions for key policies and IAM policies.

This section shows an example CloudTrail log entry for each of the supported NitroTPM requests to AWS KMS.

Decrypt (for a NitroTPM)

The following example shows an AWS CloudTrail log entry of a Decrypt operation for a NitroTPM.

{
    "eventVersion": "1.05",
    "userIdentity": {
        "type": "IAMUser",
        "principalId": "EX_PRINCIPAL_ID",
        "arn": "arn:aws:iam::111122223333:user/Alice",
        "accountId": "111122223333",
        "accessKeyId": "EXAMPLE_KEY_ID",
        "userName": "Alice"
    },
    "eventTime": "2020-07-27T22:58:24Z",
    "eventSource": "kms.amazonaws.com",
    "eventName": "Decrypt",
    "awsRegion": "us-west-2",
    "sourceIPAddress": "192.0.2.0",
    "userAgent": "AWS Internal",
    "requestParameters": {
        "encryptionAlgorithm": "SYMMETRIC_DEFAULT",
        "keyId": "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab"
    },
    "responseElements": null,
    "additionalEventData": {
        "recipient": {
           "attestationDocumentModuleId": "i-123456789abcde123-tpm0000000000000000",
           "attestationDocumentNitroTPMPCR4": "<AttestationDocument.PCR4>",
           "attestationDocumentNitroTPMPCR7": "<AttestationDocument.PCR7>",
           "attestationDocumentNitroTPMPCR8": "<AttestationDocument.PCR8>",
           "attestationDocumentNitroTPMPCR9": "<AttestationDocument.PCR9>",
           "attestationDocumentNitroTPMPCR16": "<AttestationDocument.PCR16>",
           "attestationDocumentNitroTPMPCR23": "<AttestationDocument.PCR23>"
        }
    },
    "requestID": "b4a65126-30d5-4b28-98b9-9153da559963",
    "eventID": "e5a2f202-ba1a-467c-b4ba-f729d45ae521",
    "readOnly": true,
    "resources": [
        {
            "accountId": "111122223333",
            "type": "AWS::KMS::Key",
            "ARN": "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab"
        }
    ],
    "eventType": "AwsApiCall",
    "recipientAccountId": "111122223333"
}
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GenerateDataKey (for a NitroTPM)

The following example shows an AWS CloudTrail log entry of a GenerateDataKey operation for a NitroTPM.

{
    "eventVersion": "1.02",
    "userIdentity": {
        "type": "IAMUser",
        "principalId": "EX_PRINCIPAL_ID",
        "arn": "arn:aws:iam::111122223333:user/Alice",
        "accountId": "111122223333",
        "accessKeyId": "EXAMPLE_KEY_ID",
        "userName": "Alice"
    },
    "eventTime": "2014-11-04T00:52:40Z",
    "eventSource": "kms.amazonaws.com",
    "eventName": "GenerateDataKey",
    "awsRegion": "us-east-1",
    "sourceIPAddress": "192.0.2.0",
    "userAgent": "AWS Internal",
    "requestParameters": {
        "keyId": "1234abcd-12ab-34cd-56ef-1234567890ab",
        "numberOfBytes": 32
    },
    "responseElements": null,
    "additionalEventData": {
        "recipient": {
           "attestationDocumentModuleId": "i-123456789abcde123-tpm0000000000000000",
           "attestationDocumentNitroTPMPCR4": "<AttestationDocument.PCR4>",
           "attestationDocumentNitroTPMPCR7": "<AttestationDocument.PCR7>",
           "attestationDocumentNitroTPMPCR8": "<AttestationDocument.PCR8>",
           "attestationDocumentNitroTPMPCR9": "<AttestationDocument.PCR9>",
           "attestationDocumentNitroTPMPCR16": "<AttestationDocument.PCR16>",
           "attestationDocumentNitroTPMPCR23": "<AttestationDocument.PCR23>"
        }
    },
    "requestID": "e0eb83e3-63bc-11e4-bc2b-4198b6150d5c",
    "eventID": "a9dea4f9-8395-46c0-942c-f509c02c2b71",
    "readOnly": true,
    "resources": [{
        "ARN": "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab",
        "accountId": "111122223333"
    }],
    "eventType": "AwsApiCall",
    "recipientAccountId": "111122223333"
}
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GenerateDataKeyPair (for a NitroTPM)

The following example shows an AWS CloudTrail log entry of a GenerateDataKeyPair operation for a NitroTPM.

{
    "eventVersion": "1.05",
    "userIdentity": {
            "type": "IAMUser",
            "principalId": "EX_PRINCIPAL_ID",
            "arn": "arn:aws:iam::111122223333:user/Alice",
            "accountId": "111122223333",
            "accessKeyId": "EXAMPLE_KEY_ID",
            "userName": "Alice"
    },
    "eventTime": "2020-07-27T18:57:57Z",
    "eventSource": "kms.amazonaws.com",
    "eventName": "GenerateDataKeyPair",
    "awsRegion": "us-west-2",
    "sourceIPAddress": "192.0.2.0",
    "userAgent": "AWS Internal",
    "requestParameters": {
        "keyPairSpec": "RSA_3072",
        "encryptionContext": {
            "Project": "Alpha"
        },
        "keyId": "1234abcd-12ab-34cd-56ef-1234567890ab"
    },
    "responseElements": null,
    "additionalEventData": {
        "recipient": {
           "attestationDocumentModuleId": "i-123456789abcde123-tpm0000000000000000",
           "attestationDocumentNitroTPMPCR4": "<AttestationDocument.PCR4>",
           "attestationDocumentNitroTPMPCR7": "<AttestationDocument.PCR7>",
           "attestationDocumentNitroTPMPCR8": "<AttestationDocument.PCR8>",
           "attestationDocumentNitroTPMPCR9": "<AttestationDocument.PCR9>",
           "attestationDocumentNitroTPMPCR16": "<AttestationDocument.PCR16>",
           "attestationDocumentNitroTPMPCR23": "<AttestationDocument.PCR23>"
        }
    },
    "requestID": "52fb127b-0fe5-42bb-8e5e-f560febde6b0",
    "eventID": "9b6bd6d2-529d-4890-a949-593b13800ad7",
    "readOnly": true,
    "resources": [
        {
            "accountId": "111122223333",
            "type": "AWS::KMS::Key",
            "ARN": "arn:aws:kms:us-west-2:111122223333:key/1234abcd-12ab-34cd-56ef-1234567890ab"
        }
    ],
    "eventType": "AwsApiCall",
    "recipientAccountId": "111122223333"
}
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GenerateRandom (for a NitroTPM)

The following example shows an AWS CloudTrail log entry of a GenerateRandom operation for a NitroTPM.

{
    "eventVersion": "1.02",
    "userIdentity": {
        "type": "IAMUser",
        "principalId": "EX_PRINCIPAL_ID",
        "arn": "arn:aws:iam::111122223333:user/Alice",
        "accountId": "111122223333",
        "accessKeyId": "EXAMPLE_KEY_ID",
        "userName": "Alice"
    },
    "eventTime": "2014-11-04T00:52:37Z",
    "eventSource": "kms.amazonaws.com",
    "eventName": "GenerateRandom",
    "awsRegion": "us-east-1",
    "sourceIPAddress": "192.0.2.0",
    "userAgent": "AWS Internal",
    "requestParameters": null,
    "responseElements": null,
    "additionalEventData": {
        "recipient": {
           "attestationDocumentModuleId": "i-123456789abcde123-tpm0000000000000000",
           "attestationDocumentNitroTPMPCR4": "<AttestationDocument.PCR4>",
           "attestationDocumentNitroTPMPCR7": "<AttestationDocument.PCR7>",
           "attestationDocumentNitroTPMPCR8": "<AttestationDocument.PCR8>",
           "attestationDocumentNitroTPMPCR9": "<AttestationDocument.PCR9>",
           "attestationDocumentNitroTPMPCR16": "<AttestationDocument.PCR16>",
           "attestationDocumentNitroTPMPCR23": "<AttestationDocument.PCR23>"
        }
    },
    "requestID": "df1e3de6-63bc-11e4-bc2b-4198b6150d5c",
    "eventID": "239cb9f7-ae05-4c94-9221-6ea30eef0442",
    "readOnly": true,
    "resources": [],
    "eventType": "AwsApiCall",
    "recipientAccountId": "111122223333"
}
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