diff --git a/_data/sidebars/picoruby_sidebar.yml b/_data/sidebars/picoruby_sidebar.yml
index 2d04e99..dcb0836 100644
--- a/_data/sidebars/picoruby_sidebar.yml
+++ b/_data/sidebars/picoruby_sidebar.yml
@@ -322,6 +322,14 @@ entries:
       url: "/MbedTLS_CMAC.html"
       output: web pdf
       type: homepage
+    - title: MbedTLS::Cipher
+      url: "/MbedTLS_Cipher.html"
+      output: web pdf
+      type: homepage
+    - title: MbedTLS::Digest
+      url: "/MbedTLS_Digest.html"
+      output: web pdf
+      type: homepage
     - title: PicoRubyVM
       url: "/PicoRubyVM.html"
       output: web pdf
@@ -342,6 +350,10 @@ entries:
       url: "/Prism_ParseResult.html"
       output: web pdf
       type: homepage
+    - title: RNG
+      url: "/RNG.html"
+      output: web pdf
+      type: homepage
     - title: RTD
       url: "/RTD.html"
       output: web pdf
diff --git a/pages/rbs_doc/Base16.md b/pages/rbs_doc/Base16.md
index e4a2411..c7ce781 100644
--- a/pages/rbs_doc/Base16.md
+++ b/pages/rbs_doc/Base16.md
@@ -7,3 +7,14 @@ sidebar: picoruby_sidebar
 permalink: Base16.html
 folder: rbs_doc
 ---
+## Singleton methods
+### decode16
+
+```ruby
+Base16.decode16(String) -> String
+```
+### encode16
+
+```ruby
+Base16.encode16(String) -> String
+```
diff --git a/pages/rbs_doc/Base64.md b/pages/rbs_doc/Base64.md
index 538ffd9..3bc734a 100644
--- a/pages/rbs_doc/Base64.md
+++ b/pages/rbs_doc/Base64.md
@@ -7,3 +7,14 @@ sidebar: picoruby_sidebar
 permalink: Base64.html
 folder: rbs_doc
 ---
+## Singleton methods
+### decode64
+
+```ruby
+Base64.decode64(String) -> String
+```
+### encode64
+
+```ruby
+Base64.encode64(String) -> String
+```
diff --git a/pages/rbs_doc/MbedTLS_Cipher.md b/pages/rbs_doc/MbedTLS_Cipher.md
new file mode 100644
index 0000000..cece837
--- /dev/null
+++ b/pages/rbs_doc/MbedTLS_Cipher.md
@@ -0,0 +1,46 @@
+---
+title: MbedTLS::Cipher
+keywords: MbedTLS::Cipher
+tags: [class]
+summary: MbedTLS::Cipher class of PicoRuby
+sidebar: picoruby_sidebar
+permalink: MbedTLS_Cipher.html
+folder: rbs_doc
+---
+## Singleton methods
+### _init_ctx
+
+```ruby
+MbedTLS::Cipher._init_ctx(Integer, String, Integer) -> MbedTLS::Cipher
+```
+### new
+
+```ruby
+MbedTLS::Cipher.new(untyped cipher_suite, untyped key, untyped operation) -> MbedTLS::Cipher
+```
+## Instance methods
+### check_tag
+
+```ruby
+instance.check_tag(String) -> bool
+```
+### finish
+
+```ruby
+instance.finish() -> String
+```
+### update
+
+```ruby
+instance.update(String) -> String
+```
+### update_ad
+
+```ruby
+instance.update_ad(String) -> MbedTLS::Cipher
+```
+### write_tag
+
+```ruby
+instance.write_tag() -> String
+```
diff --git a/pages/rbs_doc/MbedTLS_Digest.md b/pages/rbs_doc/MbedTLS_Digest.md
new file mode 100644
index 0000000..3c45b0a
--- /dev/null
+++ b/pages/rbs_doc/MbedTLS_Digest.md
@@ -0,0 +1,26 @@
+---
+title: MbedTLS::Digest
+keywords: MbedTLS::Digest
+tags: [class]
+summary: MbedTLS::Digest class of PicoRuby
+sidebar: picoruby_sidebar
+permalink: MbedTLS_Digest.html
+folder: rbs_doc
+---
+## Singleton methods
+### new
+
+```ruby
+MbedTLS::Digest.new(untyped algorithm) -> MbedTLS::Digest
+```
+## Instance methods
+### finish
+
+```ruby
+instance.finish() -> String
+```
+### update
+
+```ruby
+instance.update(String) -> MbedTLS::Digest
+```
diff --git a/pages/rbs_doc/RNG.md b/pages/rbs_doc/RNG.md
new file mode 100644
index 0000000..891193e
--- /dev/null
+++ b/pages/rbs_doc/RNG.md
@@ -0,0 +1,20 @@
+---
+title: RNG
+keywords: RNG
+tags: [class]
+summary: RNG class of PicoRuby
+sidebar: picoruby_sidebar
+permalink: RNG.html
+folder: rbs_doc
+---
+## Singleton methods
+### random_int
+
+```ruby
+RNG.random_int-> Integer
+```
+### random_string
+
+```ruby
+RNG.random_string(Integer) -> String
+```