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Imports a signed private CA certificate into Amazon Web Services Private CA. This action is used when you are using a chain of trust whose root is located outside Amazon Web Services Private CA. Before you can call this action, the following preparations must in place:
In Amazon Web Services Private CA, call the CreateCertificateAuthority action to create the private CA that you plan to back with the imported certificate.
Call the GetCertificateAuthorityCsr action to generate a certificate signing request (CSR).
Sign the CSR using a root or intermediate CA hosted by either an on-premises PKI hierarchy or by a commercial CA.
Create a certificate chain and copy the signed certificate and the certificate chain to your working directory.
Amazon Web Services Private CA supports three scenarios for installing a CA certificate:
Installing a certificate for a root CA hosted by Amazon Web Services Private CA.
Installing a subordinate CA certificate whose parent authority is hosted by Amazon Web Services Private CA.
Installing a subordinate CA certificate whose parent authority is externally hosted.
The following additional requirements apply when you import a CA certificate.
Only a self-signed certificate can be imported as a root CA.
A self-signed certificate cannot be imported as a subordinate CA.
Your certificate chain must not include the private CA certificate that you are importing.
Your root CA must be the last certificate in your chain. The subordinate certificate, if any, that your root CA signed must be next to last. The subordinate certificate signed by the preceding subordinate CA must come next, and so on until your chain is built.
The chain must be PEM-encoded.
The maximum allowed size of a certificate is 32 KB.
The maximum allowed size of a certificate chain is 2 MB.
Enforcement of Critical Constraints
Amazon Web Services Private CA allows the following extensions to be marked critical in the imported CA certificate or chain.
Basic constraints (must be marked critical)
Subject alternative names
Key usage
Extended key usage
Authority key identifier
Subject key identifier
Issuer alternative name
Subject directory attributes
Subject information access
Certificate policies
Policy mappings
Inhibit anyPolicy
Amazon Web Services Private CA rejects the following extensions when they are marked critical in an imported CA certificate or chain.
Name constraints
Policy constraints
CRL distribution points
Authority information access
Freshest CRL
Any other extension
This is an asynchronous operation using the standard naming convention for .NET 4.5 or higher. For .NET 3.5 the operation is implemented as a pair of methods using the standard naming convention of BeginImportCertificateAuthorityCertificate and EndImportCertificateAuthorityCertificate.
Namespace: Amazon.ACMPCA
Assembly: AWSSDK.ACMPCA.dll
Version: 3.x.y.z
public virtual Task<ImportCertificateAuthorityCertificateResponse> ImportCertificateAuthorityCertificateAsync( ImportCertificateAuthorityCertificateRequest request, CancellationToken cancellationToken )
Container for the necessary parameters to execute the ImportCertificateAuthorityCertificate service method.
A cancellation token that can be used by other objects or threads to receive notice of cancellation.
| Exception | Condition |
|---|---|
| CertificateMismatchException | The certificate authority certificate you are importing does not comply with conditions specified in the certificate that signed it. |
| ConcurrentModificationException | A previous update to your private CA is still ongoing. |
| InvalidArnException | The requested Amazon Resource Name (ARN) does not refer to an existing resource. |
| InvalidRequestException | The request action cannot be performed or is prohibited. |
| InvalidStateException | The state of the private CA does not allow this action to occur. |
| MalformedCertificateException | One or more fields in the certificate are invalid. |
| RequestFailedException | The request has failed for an unspecified reason. |
| RequestInProgressException | Your request is already in progress. |
| ResourceNotFoundException | A resource such as a private CA, S3 bucket, certificate, audit report, or policy cannot be found. |
.NET Core App:
Supported in: 3.1
.NET Standard:
Supported in: 2.0
.NET Framework:
Supported in: 4.5