diff --git a/apitypes.go b/apitypes.go
index 53a76ce..f7508d1 100644
--- a/apitypes.go
+++ b/apitypes.go
@@ -225,3 +225,28 @@ const (
 type FileStatus struct {
 	File
 }
+
+type CreateKeyRequest struct {
+	AccountID              string   `json:"accountId"`
+	Capabilities           []string `json:"capabilities"`
+	KeyName                string   `json:"keyName"`
+	ValidDurationInSeconds int      `json:"validDurationInSeconds,omitempty"`
+	BucketId               string   `json:"bucketId,omitempty"`
+	NamePrefix             string   `json:"namePrefix,omitempty"`
+}
+
+type ApplicationKeyResponse struct {
+	KeyName             string   `json:"keyName"`
+	ApplicationKeyId    string   `json:"applicationKeyId"`
+	ApplicationKey      string   `json:"applicationKey"`
+	Capabilities        []string `json:"capabilities"`
+	AccountID           string   `json:"accountId"`
+	ExpirationTimestamp int64    `json:"expirationTimestamp"`
+	BucketId            string   `json:"bucketId"`
+	NamePrefix          string   `json:"namePrefix"`
+	Options             []string `json:"options"`
+}
+
+type DeleteKeyRequest struct {
+	ApplicationKeyId string `json:"applicationKeyId"`
+}
diff --git a/buckets.go b/buckets.go
index 7f6c0fd..6dfea6e 100644
--- a/buckets.go
+++ b/buckets.go
@@ -108,7 +108,7 @@ func (b *B2) ListBuckets() ([]*Bucket, error) {
 		case AllPrivate:
 		case Snapshot:
 		default:
-			return nil, errors.New("Uncrecognised bucket type: " + string(bucket.BucketType))
+			return nil, errors.New("Unrecognized bucket type: " + string(bucket.BucketType))
 		}
 
 		buckets[i] = bucket
@@ -231,3 +231,45 @@ func (b *Bucket) ReturnUploadAuth(uploadAuth *UploadAuth) {
 		}
 	}
 }
+
+// CreateApplicationKey creates application key
+// It is possible to limit application key capabilities by defining an
+// array with allowed permission
+// (which can be find here https://www.backblaze.com/apidocs/b2-create-key)
+// This function to work requires master application key to
+// be used for authenticaion
+func (b *B2) CreateApplicationKey(keyDetails *CreateKeyRequest) (*ApplicationKeyResponse, error) {
+	request := &CreateKeyRequest{
+		AccountID:              b.AccountID,
+		Capabilities:           keyDetails.Capabilities,
+		KeyName:                keyDetails.KeyName,
+		ValidDurationInSeconds: keyDetails.ValidDurationInSeconds,
+		BucketId:               keyDetails.BucketId,
+		NamePrefix:             keyDetails.NamePrefix,
+	}
+
+	response := &ApplicationKeyResponse{}
+
+	if err := b.apiRequest("b2_create_key", request, response); err != nil {
+		return nil, err
+	}
+
+	return response, nil
+}
+
+// DeleteApplicationKey deletes application keys by providing applicationKeyID
+// This function to work requires master application key to
+// be used for authenticaion
+func (b *B2) DeleteApplicationKey(applicationKeyId string) (*ApplicationKeyResponse, error) {
+	request := &DeleteKeyRequest{
+		ApplicationKeyId: applicationKeyId,
+	}
+
+	response := &ApplicationKeyResponse{}
+
+	if err := b.apiRequest("b2_delete_key", request, response); err != nil {
+		return nil, err
+	}
+
+	return response, nil
+}
diff --git a/buckets_test.go b/buckets_test.go
index 7019751..84a82a3 100644
--- a/buckets_test.go
+++ b/buckets_test.go
@@ -2,6 +2,7 @@ package backblaze
 
 import (
 	"testing"
+	"time"
 )
 
 func TestListBuckets(T *testing.T) {
@@ -51,3 +52,69 @@ func TestListBuckets(T *testing.T) {
 		T.Errorf("Bucket ID does not match: expected %q, saw %q", bucketID, buckets[0].ID)
 	}
 }
+
+func TestCreateApplicationKey(T *testing.T) {
+
+	accountID := "test"
+
+	keyName := "my-new-key"
+	applicationKeyId := "fffff000123"
+	applicationKey := "abcdfxyz"
+
+	timestampNow := time.Now().Unix()
+	keyValidDurationInSeconds := 3600
+	expirationTimeStamp := timestampNow + int64(keyValidDurationInSeconds)
+
+	client, server := prepareResponses([]response{
+		{code: 200, body: authorizeAccountResponse{
+			AccountID:          accountID,
+			APIEndpoint:        "http://api.url",
+			AuthorizationToken: "testToken",
+			DownloadURL:        "http://download.url",
+		}},
+		{code: 200, body: ApplicationKeyResponse{
+			KeyName:             keyName,
+			ApplicationKeyId:    applicationKeyId,
+			ApplicationKey:      applicationKey,
+			ExpirationTimestamp: expirationTimeStamp,
+		}},
+	})
+	defer server.Close()
+
+	b2 := &B2{
+		Credentials: Credentials{
+			AccountID:      accountID,
+			ApplicationKey: "test",
+		},
+		Debug:      testing.Verbose(),
+		httpClient: *client,
+		host:       server.URL,
+	}
+
+	appkey, err := b2.CreateApplicationKey(&CreateKeyRequest{
+		Capabilities:           []string{"listAllBucketNames", "listKeys"},
+		KeyName:                keyName,
+		ValidDurationInSeconds: keyValidDurationInSeconds,
+	})
+
+	if err != nil {
+		T.Fatal(err)
+	}
+
+	if appkey.KeyName != keyName {
+		T.Errorf("Expected to get keyName '%s', received '%s'", keyName, appkey.KeyName)
+	}
+
+	if appkey.ApplicationKeyId != applicationKeyId {
+		T.Errorf("Expected to get applicationKeyId '%s', received '%s'", applicationKeyId, appkey.ApplicationKeyId)
+	}
+
+	if appkey.ApplicationKey != applicationKey {
+		T.Errorf("Expected to get applicationKey '%s', received '%s'", applicationKey, appkey.ApplicationKey)
+	}
+
+	if appkey.ExpirationTimestamp != expirationTimeStamp {
+		T.Errorf("Expected to get ExpirationTimestamp '%d', received '%d'", expirationTimeStamp, appkey.ExpirationTimestamp)
+	}
+
+}