5 files changed, 5 insertions, 5 deletions
diff --git a/src/lib/block/aes/aes_ssse3/aes_ssse3.cpp b/src/lib/block/aes/aes_ssse3/aes_ssse3.cpp
index 6dcf1e794..47d70d0b8 100644
--- a/src/lib/block/aes/aes_ssse3/aes_ssse3.cpp
+++ b/src/lib/block/aes/aes_ssse3/aes_ssse3.cpp
@@ -5,7 +5,7 @@
 * This is more or less a direct translation of public domain x86-64
 * assembly written by Mike Hamburg, described in "Accelerating AES
 * with Vector Permute Instructions" (CHES 2009). His original code is
-* available at http://crypto.stanford.edu/vpaes/
+* available at https://crypto.stanford.edu/vpaes/
 *
 * Botan is released under the Simplified BSD License (see license.txt)
 */
diff --git a/src/lib/block/aria/aria.cpp b/src/lib/block/aria/aria.cpp
index 1583dd7d3..4b99d2306 100644
--- a/src/lib/block/aria/aria.cpp
+++ b/src/lib/block/aria/aria.cpp
@@ -11,7 +11,7 @@
 * National Security Research Institute, KOREA. Aaram Yun's implementation is based on
 * the 8-bit implementation by Jin Hong. The source files are available in ARIA.zip from
 * the Korea Internet & Security Agency website.
-* <A HREF="http://tools.ietf.org/html/rfc5794">RFC 5794, A Description of the ARIA Encryption Algorithm</A>,
+* <A HREF="https://tools.ietf.org/html/rfc5794">RFC 5794, A Description of the ARIA Encryption Algorithm</A>,
 * <A HREF="http://seed.kisa.or.kr/iwt/ko/bbs/EgovReferenceList.do?bbsId=BBSMSTR_000000000002">Korea
 * Internet & Security Agency homepage</A>
 */
diff --git a/src/lib/block/aria/aria.h b/src/lib/block/aria/aria.h
index f412197cf..374277686 100644
--- a/src/lib/block/aria/aria.h
+++ b/src/lib/block/aria/aria.h
@@ -8,7 +8,7 @@
 * National Security Research Institute, KOREA. Aaram Yun's implementation is based on
 * the 8-bit implementation by Jin Hong. The source files are available in ARIA.zip from
 * the Korea Internet & Security Agency website.
-* <A HREF="http://tools.ietf.org/html/rfc5794">RFC 5794, A Description of the ARIA Encryption Algorithm</A>,
+* <A HREF="https://tools.ietf.org/html/rfc5794">RFC 5794, A Description of the ARIA Encryption Algorithm</A>,
 * <A HREF="http://seed.kisa.or.kr/iwt/ko/bbs/EgovReferenceList.do?bbsId=BBSMSTR_000000000002">Korea
 * Internet & Security Agency homepage</A>
 */
diff --git a/src/lib/block/lion/lion.h b/src/lib/block/lion/lion.h
index 54e13175e..846c3cd30 100644
--- a/src/lib/block/lion/lion.h
+++ b/src/lib/block/lion/lion.h
@@ -20,7 +20,7 @@ namespace Botan {
 * Ciphers: BEAR and LION". It has a variable block size and is
 * designed to encrypt very large blocks (up to a megabyte)
 
-* http://www.cl.cam.ac.uk/~rja14/Papers/bear-lion.pdf
+* https://www.cl.cam.ac.uk/~rja14/Papers/bear-lion.pdf
 */
 class BOTAN_PUBLIC_API(2,0) Lion final : public BlockCipher
    {
diff --git a/src/lib/block/serpent/serpent.h b/src/lib/block/serpent/serpent.h
index 28aa44e21..4d23c9a01 100644
--- a/src/lib/block/serpent/serpent.h
+++ b/src/lib/block/serpent/serpent.h
@@ -14,7 +14,7 @@ namespace Botan {
 
 /**
 * Serpent is the most conservative of the AES finalists
-* http://www.cl.cam.ac.uk/~rja14/serpent.html
+* https://www.cl.cam.ac.uk/~rja14/serpent.html
 */
 class BOTAN_PUBLIC_API(2,0) Serpent final : public Block_Cipher_Fixed_Params<16, 16, 32, 8>
    {