diff --git a/features/FEATURE_BLE/ble/pal/PalSecurityManager.h b/features/FEATURE_BLE/ble/pal/PalSecurityManager.h
index 948e64f4c8..3f51299f9b 100644
--- a/features/FEATURE_BLE/ble/pal/PalSecurityManager.h
+++ b/features/FEATURE_BLE/ble/pal/PalSecurityManager.h
@@ -792,22 +792,6 @@ public:
         bool mitm
     ) = 0;
 
-    virtual ble_error_t disable_encryption(
-        connection_handle_t connection
-    ) = 0;
-
-    /**
-     * Get the link's key size.
-     *
-     * @param[in] connection connection handle
-     * @param[out] bytesize size of the encryption key in bytes
-     * @retval BLE_ERROR_NONE On success, else an error code indicating reason for failure
-     */
-    virtual ble_error_t get_encryption_key_size(
-        connection_handle_t connection,
-        uint8_t &bytesize
-    ) = 0;
-
     /**
      * Encrypt data with a given key. This uses the facility on the controller to
      * perform the encryption.
@@ -891,17 +875,6 @@ public:
     // Authentication
     //
 
-    /**
-     * Request authentication of the connection. This will trigger an appropriate reaction,
-     * which might include encryption or pairing/re-pairing.
-     *
-     * @param[in] connection connection handle
-     * @retval BLE_ERROR_NONE On success, else an error code indicating reason for failure
-     */
-    virtual ble_error_t request_authentication(
-        connection_handle_t connection
-    ) = 0;
-
     /**
      * Generate and return 8 octets of random data compliant with [FIPS PUB 140-2]
      *
diff --git a/features/FEATURE_BLE/targets/TARGET_CORDIO/CordioPalSecurityManager.h b/features/FEATURE_BLE/targets/TARGET_CORDIO/CordioPalSecurityManager.h
index ed41ca8ea1..10b0a0922b 100644
--- a/features/FEATURE_BLE/targets/TARGET_CORDIO/CordioPalSecurityManager.h
+++ b/features/FEATURE_BLE/targets/TARGET_CORDIO/CordioPalSecurityManager.h
@@ -147,25 +147,6 @@ public:
         bool mitm
     );
 
-    /**
-     * @see ::ble::pal::SecurityManager::disable_encryption
-     */
-    virtual ble_error_t disable_encryption(connection_handle_t connection);
-
-    /**
-     * @see ::ble::pal::SecurityManager::get_encryption_status
-     */
-    virtual ble_error_t get_encryption_status(
-        connection_handle_t connection, LinkSecurityStatus_t &status
-    );
-
-    /**
-     * @see ::ble::pal::SecurityManager::get_encryption_key_size
-     */
-    virtual ble_error_t get_encryption_key_size(
-        connection_handle_t, uint8_t &bitsize
-    );
-
     /**
      * @see ::ble::pal::SecurityManager::encrypt_data
      */
@@ -274,11 +255,6 @@ public:
         connection_handle_t connection, pairing_failure_t reason
     );
 
-    /**
-     * @see ::ble::pal::SecurityManager::request_authentication
-     */
-    virtual ble_error_t request_authentication(connection_handle_t connection);
-
     /**
      * @see ::ble::pal::SecurityManager::get_random_data
      */
diff --git a/features/FEATURE_BLE/targets/TARGET_CORDIO/source/CordioPalSecurityManager.cpp b/features/FEATURE_BLE/targets/TARGET_CORDIO/source/CordioPalSecurityManager.cpp
index 9e0dc9c2dd..4e1689bc15 100644
--- a/features/FEATURE_BLE/targets/TARGET_CORDIO/source/CordioPalSecurityManager.cpp
+++ b/features/FEATURE_BLE/targets/TARGET_CORDIO/source/CordioPalSecurityManager.cpp
@@ -171,23 +171,6 @@ ble_error_t CordioSecurityManager::enable_encryption(
     return BLE_ERROR_NONE;
 }
 
-ble_error_t CordioSecurityManager::disable_encryption(connection_handle_t connection)
-{
-    return BLE_ERROR_NOT_IMPLEMENTED;
-}
-
-ble_error_t CordioSecurityManager::get_encryption_status(
-    connection_handle_t connection, LinkSecurityStatus_t &status
-) {
-    return BLE_ERROR_NOT_IMPLEMENTED;
-}
-
-ble_error_t CordioSecurityManager::get_encryption_key_size(
-    connection_handle_t, uint8_t &bitsize
-) {
-    return BLE_ERROR_NOT_IMPLEMENTED;
-}
-
 ble_error_t CordioSecurityManager::encrypt_data(
     const byte_array_t<16> &key,
     encryption_block_t &data
@@ -342,11 +325,6 @@ ble_error_t CordioSecurityManager::cancel_pairing(
     return BLE_ERROR_NONE;
 }
 
-ble_error_t CordioSecurityManager::request_authentication(connection_handle_t connection)
-{
-    return BLE_ERROR_NOT_IMPLEMENTED;
-}
-
 ble_error_t CordioSecurityManager::get_random_data(byte_array_t<8> &random_data)
 {
     SecRand(random_data.buffer(), random_data.size());