<p>Creates a root or subordinate private certificate authority (CA). You must specify the CA configuration, an optional configuration for Online Certificate Status Protocol (OCSP) and/or a certificate revocation list (CRL), the CA type, and an optional idempotency token to avoid accidental creation of multiple CAs. The CA configuration specifies the name of the algorithm and key size to be used to create the CA private key, the type of signing algorithm that the CA uses, and X.500 subject information. The OCSP configuration can optionally specify a custom URL for the OCSP responder. The CRL configuration specifies the CRL expiration period in days (the validity period of the CRL), the Amazon S3 bucket that will contain the CRL, and a CNAME alias for the S3 bucket that is included in certificates issued by the CA. If successful, this action returns the Amazon Resource Name (ARN) of the CA.</p> <note> <p>Both Amazon Web Services Private CA and the IAM principal must have permission to write to the S3 bucket that you specify. If the IAM principal making the call does not have permission to write to the bucket, then an exception is thrown. For more information, see <a href="https://docs.aws.amazon.com/privateca/latest/userguide/crl-planning.html#s3-policies">Access policies for CRLs in Amazon S3</a>.</p> </note> <p>Amazon Web Services Private CA assets that are stored in Amazon S3 can be protected with encryption. For more information, see <a href="https://docs.aws.amazon.com/privateca/latest/userguide/PcaCreateCa.html#crl-encryption">Encrypting Your CRLs</a>.</p>

{
  "success": true,
  "data": {
    "id": "abc123",
    "created_at": "2025-01-01T00:00:00Z"
  }
}

{
  "success": false,
  "error": {
    "code": "VALIDATION_ERROR",
    "message": "Invalid request parameters"
  }
}