HTTPS a bunch of links in random places (#4666)

* HTTPS a bunch of links in random places

* What the heck happened here?
diff --git a/tests/test_utils.py b/tests/test_utils.py
index 81656eb..ecd257b 100644
--- a/tests/test_utils.py
+++ b/tests/test_utils.py
@@ -227,7 +227,7 @@
 
 def test_load_cryptrec_vectors():
     vector_data = textwrap.dedent("""
-    # Vectors taken from http://info.isl.ntt.co.jp/crypt/eng/camellia/
+    # Vectors taken from https://info.isl.ntt.co.jp/crypt/eng/camellia/
     # Download is t_camelia.txt
 
     # Camellia with 128-bit key
@@ -267,7 +267,7 @@
 
 def test_load_cryptrec_vectors_invalid():
     vector_data = textwrap.dedent("""
-    # Vectors taken from http://info.isl.ntt.co.jp/crypt/eng/camellia/
+    # Vectors taken from https://info.isl.ntt.co.jp/crypt/eng/camellia/
     # Download is t_camelia.txt
 
     # Camellia with 128-bit key
@@ -282,7 +282,7 @@
 def test_load_hash_vectors():
     vector_data = textwrap.dedent("""
 
-        # http://tools.ietf.org/html/rfc1321
+        # https://tools.ietf.org/html/rfc1321
         [irrelevant]
 
         Len = 0
@@ -327,7 +327,7 @@
 
 def test_load_hash_vectors_bad_data():
     vector_data = textwrap.dedent("""
-        # http://tools.ietf.org/html/rfc1321
+        # https://tools.ietf.org/html/rfc1321
 
         Len = 0
         Msg = 00