---
name: "mongoc_auto_encryption_opts_set_schema_map"
section: "3"
platform: "linux"
package: "libmongoc-doc"
version: "1.30.4-1+deb13u3"
release: "Debian 13 (Trixie)"
platforms: ["linux"]
url: "https://new.carta.tech/mongoc_auto_encryption_opts_set_schema_map"
---

# mongoc\_auto\_encryption\_opts\_set\_schema\_map(3)

## SYNOPSIS

```
void
mongoc_auto_encryption_opts_set_schema_map (mongoc_auto_encryption_opts_t *opts,
                                            const bson_t *schema_map);
```

## PARAMETERS

- •

  **opts**: The *mongoc\_auto\_encryption\_opts\_t*

- •

  **schema\_map**: A *bson\_t* where keys are collection namespaces and values are JSON schemas.

Supplying a schema map provides more security than relying on JSON Schemas obtained from the server. It protects against a malicious server advertising a false JSON Schema, which could trick the client into sending unencrypted data that should be encrypted.

Schemas supplied in the schema map only apply to configuring automatic encryption for *Client-Side Field Level Encryption*. Other validation rules in the JSON schema will not be enforced by the driver and will result in an error.

The following is an example of a schema map which configures automatic encryption for the collection **db.coll**:

```
{
     "db.coll": {
         "properties": {
         "encrypted_string": {
             "encrypt": {
             "keyId": [
                 {
                 "$binary": {
                     "base64": "AAAAAAAAAAAAAAAAAAAAAA==",
                     "subType": "04"
                 }
                 }
             ],
             "bsonType": "string",
             "algorithm": "AEAD_AES_256_CBC_HMAC_SHA_512-Deterministic"
             }
         }
         },
         "bsonType": "object"
     }
 }
```

The schema map does not apply to collections encrypted with: *Queryable Encryption*. Use *mongoc\_auto\_encryption\_opts\_set\_encrypted\_fields\_map()* instead.

**SEE ALSO:**

```
mongoc_client_enable_auto_encryption()
```

```
In-Use Encryption
```

## AUTHOR

MongoDB, Inc

## COPYRIGHT

2009-present, MongoDB, Inc.