[SalesForce] Can we use encrypted fields in Report Filters with Platform Encryption

View Encrypted Data permission will allow the user to see the original value of the field both in the UI and via API.

You can use a permission set to add the "View Encrypted Data" permission to a specific user.

If you do add this permission, keep in mind that it is ORG WIDE for that user so you will have to be mindful of FLS for those encrypted fields you do not want them do see.....

Did some more Googling and didn't find anything documented or a standard platform alternative. Happy to accept an alternative answer, but for now I've added this code:

/**
 * Return a set (a list has to be used for @AuraEnabled to allow the signature)
 * of encrypted fields for each requested type as getObjectInfo doesn't appear
 * to return that information.
 */
@AuraEnabled(cacheable=true)
public static Map<String, List<String>> findEncryptedFields(String[] types) {

    Map<String, List<String>> results = new Map<String, List<String>>();

    for (String tt: types) {

        // Avoid the cost of a global describe
        SObjectType t = ((SObject) Type.forName(tt).newInstance()).getSObjectType();

        List<String> fields = new List<String>();
        results.put(String.valueOf(t), fields);

        for (SObjectField f : t.getDescribe().fields.getMap().values()) {
            if (f.getDescribe().isEncrypted()) {
                fields.add(String.valueOf(f));
            }
        }
    }

    return results;
}

and at the client-side the column sorting is modified using that:

// Can't sort in the database if encrypted; getObjectInfo doesn't supply
// the necessary info so use a custom API
@wire(findEncryptedFields, { types: ['Account', 'Opportunity'] })
wiredFindEncryptedFields({ error, data }) {
    if (data) {
        if (data.Account.some(f => f === 'Name')) {
            this.columns.find(c => c.fieldName === 'accountUrl').sortable = false;
        }
        if (data.Opportunity.some(f => f === 'Name')) {
            this.columns.find(c => c.fieldName === 'opportunityUrl').sortable = false;
        }
    } else if (error) {
        this.showErrorToast(error);
    }
}