[Key Vault] Update READMEs with RBAC information

sdk/keyvault/azure-keyvault-administration/README.md

@@ -14,6 +14,8 @@ and other secrets
 ([azure-keyvault-certificates](https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/keyvault/azure-keyvault-certificates)) -
 create, manage, and deploy public and private SSL/TLS certificates
 
+[Package (PyPI)][pypi_package_administration] | [API reference documentation][reference_docs] | [Product documentation][keyvault_docs]
+
 ## Getting started
 ### Install packages
 Install [azure-keyvault-administration][pypi_package_administration] and
@@ -26,7 +28,7 @@ authentication as demonstrated below.
 
 ### Prerequisites
 * An [Azure subscription][azure_sub]
-* Python 2.7, 3.5.3, or later
+* Python 2.7 or a recent version of Python 3 (this library doesn't support end-of-life versions)
 * A [managed HSM][managed_hsm]. If you need to create one, see the final two steps in the next section for details on creating the managed HSM with the Azure CLI.
 
 ### Authenticate the client
@@ -77,10 +79,11 @@ a more appropriate name for your service principal.
     export AZURE_TENANT_ID="tenant id"
     ```
 
-* Create the managed HSM and grant the above mentioned application authorization to perform administrative operations on the managed HSM (replace `<your-resource-group-name>` and `<your-managed-hsm-name>` with your own, unique names and `<your-service-principal-object-id>` with the value from above):
+* Create the managed HSM and grant the above mentioned service principal authorization to perform administrative operations on the managed HSM (replace `<your-resource-group-name>` and `<your-managed-hsm-name>` with your own, unique names and `<your-service-principal-object-id>` with the value from above):
     ```Bash
     az keyvault create --hsm-name "<your-managed-hsm-name>" --resource-group "<your-resource-group-name>" --administrators <your-service-principal-object-id> --location "<your-azure-location>"
     ```
+  This service principal is automatically added to the "Managed HSM Administrators" [built-in role][built_in_roles].
 
 * Activate your managed HSM to enable key and role management. Detailed instructions can be found in [this quickstart guide](https://docs.microsoft.com/azure/key-vault/managed-hsm/quick-create-cli#activate-your-managed-hsm). Create three self signed certificates and download the [Security Domain](https://docs.microsoft.com/azure/key-vault/managed-hsm/security-domain) for your managed HSM:
     > **Important:** Create and store the RSA key pairs and security domain file generated in this step securely.
@@ -96,6 +99,18 @@ a more appropriate name for your service principal.
     az keyvault show --hsm-name "<your-managed-hsm-name>"
     ```
 
+#### Controlling access to your managed HSM
+The designated administrators assigned during creation are automatically added to the "Managed HSM Administrators" [built-in role][built_in_roles],
+who are able to download a security domain and [manage roles for data plane access][access_control], among other limited permissions.
+
+To perform other actions on keys, you need to assign principals to other roles such as "Managed HSM Crypto User", which can perform non-destructive key operations:
+
+```Bash
+az keyvault role assignment create --hsm-name <your-managed-hsm-name> --role "Managed HSM Crypto User" --scope / --assignee-object-id <principal-or-user-object-ID> --assignee-principal-type <principal-type>
+```
+
+Please read [best practices][best_practices] for properly securing your managed HSM.
+
 #### Create a client
 Once the **AZURE_CLIENT_ID**, **AZURE_CLIENT_SECRET** and
 **AZURE_TENANT_ID** environment variables are set,
@@ -364,11 +379,14 @@ For more information, see the
 contact opencode@microsoft.com with any additional questions or comments.
 
 <!-- LINKS -->
+[access_control]: https://docs.microsoft.com/azure/key-vault/managed-hsm/access-control
 [azure_cloud_shell]: https://shell.azure.com/bash
 [azure_core_exceptions]: https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/core/azure-core#azure-core-library-exceptions
 [azure_identity]: https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/identity/azure-identity
 [azure_identity_pypi]: https://pypi.org/project/azure-identity/
 [azure_sub]: https://azure.microsoft.com/free/
+[best_practices]: https://docs.microsoft.com/azure/key-vault/managed-hsm/best-practices
+[built_in_roles]: https://docs.microsoft.com/azure/key-vault/managed-hsm/built-in-roles
 [code_of_conduct]: https://opensource.microsoft.com/codeofconduct/
 [default_cred_ref]: https://aka.ms/azsdk/python/identity/docs#azure.identity.DefaultAzureCredential
 [keyvault_docs]: https://docs.microsoft.com/azure/key-vault/

sdk/keyvault/azure-keyvault-certificates/README.md

@@ -109,6 +109,8 @@ az keyvault set-policy --name my-key-vault --spn $AZURE_CLIENT_ID --certificate-
 ```
 > Possible certificate permissions: backup, create, delete, deleteissuers, get, getissuers, import, list, listissuers, managecontacts, manageissuers, purge, recover, restore, setissuers, update
 
+If you have enabled role-based access control (RBAC) for Key Vault instead, you can find roles like "Key Vault Certificates Officer" in our [RBAC guide][rbac_guide].
+
 #### Create a client
 Once the **AZURE_CLIENT_ID**, **AZURE_CLIENT_SECRET** and
 **AZURE_TENANT_ID** environment variables are set,
@@ -431,6 +433,7 @@ contact opencode@microsoft.com with any additional questions or comments.
 [pip]: https://pypi.org/project/pip/
 [pypi_package_certificates]: https://pypi.org/project/azure-keyvault-certificates/
 [certificate_client_docs]: https://aka.ms/azsdk/python/keyvault-certificates/docs#azure.keyvault.certificates.CertificateClient
+[rbac_guide]: https://docs.microsoft.com/azure/key-vault/general/rbac-guide
 [reference_docs]: https://aka.ms/azsdk/python/keyvault-certificates/docs
 [certificates_client_src]: https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/keyvault/azure-keyvault-certificates/azure/keyvault/certificates
 [certificates_samples]: https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/keyvault/azure-keyvault-certificates/samples

sdk/keyvault/azure-keyvault-keys/README.md

@@ -113,6 +113,8 @@ az keyvault set-policy --name my-key-vault --spn $AZURE_CLIENT_ID --key-permissi
 > - Key management: backup, delete, get, list, purge, recover, restore, create, update, import
 > - Cryptographic operations: decrypt, encrypt, unwrapKey, wrapKey, verify, sign
 
+If you have enabled role-based access control (RBAC) for Key Vault instead, you can find roles like "Key Vault Crypto Officer" in our [RBAC guide][rbac_guide].
+If you are managing your keys using Managed HSM, read about its [access control][access_control] that supports different built-in roles isolated from Azure Resource Manager (ARM).
 
 #### Create a client
 Once the **AZURE_CLIENT_ID**, **AZURE_CLIENT_SECRET** and
@@ -431,6 +433,7 @@ For more information, see the
 [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/) or
 contact opencode@microsoft.com with any additional questions or comments.
 
+[access_control]: https://docs.microsoft.com/azure/key-vault/managed-hsm/access-control
 [azure_cloud_shell]: https://shell.azure.com/bash
 [azure_core_exceptions]: https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/core/azure-core#azure-core-library-exceptions
 [azure_identity]: https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/identity/azure-identity
@@ -449,6 +452,7 @@ contact opencode@microsoft.com with any additional questions or comments.
 [keyvault_docs]: https://docs.microsoft.com/azure/key-vault/
 [pip]: https://pypi.org/project/pip/
 [pypi_package_keys]: https://pypi.org/project/azure-keyvault-keys/
+[rbac_guide]: https://docs.microsoft.com/azure/key-vault/general/rbac-guide
 [reference_docs]: https://aka.ms/azsdk/python/keyvault-keys/docs
 [key_client_docs]: https://aka.ms/azsdk/python/keyvault-keys/docs#azure.keyvault.keys.KeyClient
 [crypto_client_docs]: https://aka.ms/azsdk/python/keyvault-keys/crypto/docs

sdk/keyvault/azure-keyvault-secrets/README.md

@@ -114,6 +114,7 @@ az keyvault set-policy --name my-key-vault --spn $AZURE_CLIENT_ID --secret-permi
 > Possible permissions:
 > - Secret management: set, backup, delete, get, list, purge, recover, restore
 
+If you have enabled role-based access control (RBAC) for Key Vault instead, you can find roles like "Key Vault Secrets Officer" in our [RBAC guide][rbac_guide].
 
 #### Create a client
 Once the **AZURE_CLIENT_ID**, **AZURE_CLIENT_SECRET** and
@@ -426,6 +427,7 @@ contact opencode@microsoft.com with any additional questions or comments.
 [keyvault_docs]: https://docs.microsoft.com/azure/key-vault/
 [pip]: https://pypi.org/project/pip/
 [pypi_package_secrets]: https://pypi.org/project/azure-keyvault-secrets/
+[rbac_guide]: https://docs.microsoft.com/azure/key-vault/general/rbac-guide
 [reference_docs]: https://aka.ms/azsdk/python/keyvault-secrets/docs
 [secret_client_src]: https://github.com/Azure/azure-sdk-for-python/tree/master/sdk/keyvault/azure-keyvault-secrets/azure/keyvault/secrets
 [secret_client_docs]: https://aka.ms/azsdk/python/keyvault-secrets/docs#azure.keyvault.secrets.SecretClient