Add HOTP feature to standard build

Adds the hotp feature to the standard feature list in Cargo.toml, enabling
CKM_HOTP and OTP token support by default. The changelog is also updated to
document these newly added mechanisms.

Signed-off-by: Simo Sorce <simo@redhat.com>

Author: simo5

CHANGELOG.md

@@ -4,6 +4,12 @@ All notable changes to this project should be documented in this file.
 
 ## [Unreleased]
 
+* Added support for HOTP mechanism and OTP tokens
+  - [Add support fot CKM_HOTP and OTP key
+    factory](https://github.com/latchset/kryoptic/pull/461)
+  - [Add HOTP feature to standard
+    build](https://github.com/latchset/kryoptic/pull/465)
+
 ## [1.5.1]
 ## 2026-06-04
 

Cargo.toml

@@ -106,7 +106,7 @@ ecc_all = ["ecc_min", "ec_montgomery", "eddsa"]
 hash_all = ["hash", "hmac"]
 kdf_all = ["hkdf", "pbkdf2", "sp800_108", "sshkdf", "tlskdf", "simplekdf"]
 
-standard = ["sqlitedb", "ecc_all", "ffdh", "hash_all", "kdf_all", "rsa"]
+standard = ["sqlitedb", "ecc_all", "ffdh", "hash_all", "kdf_all", "rsa", "hotp"]
 
 fips = ["ossl/fips", "sqlitedb", "rusqlite/bundled", "aes", "ecc_all", "ffdh",
 "hash_all", "kdf_all", "rsa", "pqc", "dep:vsprintf"]