Use the PKCS7 signature to verify the instance identity document - Amazon Elastic Compute Cloud
Services or capabilities described in Amazon Web Services documentation might vary by Region. To see the differences applicable to the China Regions, see Getting Started with Amazon Web Services in China (PDF).

Use the PKCS7 signature to verify the instance identity document

This topic explains how to verify the instance identity document using the PKCS7 signature and the Amazon DSA public certificate.

Prerequisites

This procedure requires the System.Security Microsoft .NET Core class. To add the class to your PowerShell session, run the following command.

PS C:\> Add-Type -AssemblyName System.Security
Note

The command adds the class to the current PowerShell session only. If you start a new session, you must run the command again.

To verify the instance identity document using the PKCS7 signature and the Amazon DSA public certificate

  1. Connect to the instance.

  2. Retrieve the PKCS7 signature from the instance metadata, convert it to a byte array, and add it to a variable named $Signature. Use one of the following commands depending on the IMDS version used by the instance.

    IMDSv2
    PS C:\> [string]$token = (Invoke-WebRequest -Method Put -Headers @{'X-aws-ec2-metadata-token-ttl-seconds' = '21600'} http://169.254.169.254/latest/api/token).Content
    PS C:\> $Signature = [Convert]::FromBase64String((Invoke-WebRequest -Headers @{'X-aws-ec2-metadata-token' = $Token} http://169.254.169.254/latest/dynamic/instance-identity/pkcs7).Content)
    IMDSv1
    PS C:\> $Signature = [Convert]::FromBase64String((Invoke-WebRequest http://169.254.169.254/latest/dynamic/instance-identity/pkcs7).Content)

  3. Retrieve the plaintext instance identity document from the instance metadata, convert it to a byte array, and add it to a variable named $Document. Use one of the following commands depending on the IMDS version used by the instance.

    IMDSv2
    PS C:\> $Document = [Text.Encoding]::UTF8.GetBytes((Invoke-WebRequest -Headers @{'X-aws-ec2-metadata-token' = $Token} http://169.254.169.254/latest/dynamic/instance-identity/document).Content)
    IMDSv1
    PS C:\> $Document =  [Text.Encoding]::UTF8.GetBytes((Invoke-WebRequest http://169.254.169.254/latest/dynamic/instance-identity/document).Content)

  4. Create a new file named certificate.pem and add one of the following Amazon DSA public certificates, depending on your Region.

    Other Amazon Regions

    The following Amazon public certificate is for all Amazon Regions, except Cape Town, Hong Kong, Hyderabad, Jakarta, Melbourne, China, Milan, Spain, Zurich, Tel Aviv, Bahrain, and UAE. 

    -----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
    Africa (Cape Town)

    The Amazon public certificate for Africa (Cape Town) is as follows.

    -----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
    Asia Pacific (Hong Kong)

    The Amazon public certificate for Asia Pacific (Hong Kong) is as follows.

    -----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
    Asia Pacific (Hyderabad)

    The Amazon public certificate for Asia Pacific (Hyderabad) is as follows.

    $  echo "-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----" >> certificate
    Asia Pacific (Jakarta)

    The Amazon public certificate for Asia Pacific (Jakarta) is as follows.

    -----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
    Asia Pacific (Melbourne)

    The Amazon public certificate for Asia Pacific (Melbourne) is as follows.

    $  echo "-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----" >> certificate
    China

    The Amazon public certificate for China (Beijing) and China (Ningxia) is as follows.

    -----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
    Europe (Milan)

    The Amazon public certificate for Europe (Milan) is as follows.

    -----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
    Europe (Spain)

    The Amazon public certificate for Europe (Spain) is as follows.

    $  echo "-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----" >> certificate
    Europe (Zurich)

    The Amazon public certificate for Europe (Zurich) is as follows.

    $  echo "-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----" >> certificate
    Israel (Tel Aviv)

    The Amazon public certificate for Israel (Tel Aviv) is as follows.

    $  echo "-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----" >> certificate
    Middle East (Bahrain)

    The Amazon public certificate for Middle East (Bahrain) is as follows.

    -----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----
    Middle East (UAE)

    The Amazon public certificate for Middle East (UAE) is as follows.

    -----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

  5. Extract the certificate from the certificate file and store it in a variable named $Store.

    PS C:\> $Store = [Security.Cryptography.X509Certificates.X509Certificate2Collection]::new([Security.Cryptography.X509Certificates.X509Certificate2]::new((Resolve-Path certificate.pem)))

  6. Verify the signature.

    PS C:\> $SignatureDocument = [Security.Cryptography.Pkcs.SignedCms]::new()
    PS C:\> $SignatureDocument.Decode($Signature)
    PS C:\> $SignatureDocument.CheckSignature($Store, $true)

    If the signature is valid, the command returns no output. If the signature cannot be verified, the command returns Exception calling "CheckSignature" with "2" argument(s): "Cannot find the original signer. If your signature cannot be verified, contact Amazon Web Services Support.

  7. Validate the content of the instance identity document.

    PS C:\> [Linq.Enumerable]::SequenceEqual($SignatureDocument.ContentInfo.Content, $Document)

    If the content of the instance identity document is valid, the command returns True. If instance identity document cannot be validated, contact Amazon Web Services Support.