1 files changed, 12 insertions, 0 deletions

diff --git a/src/widget-hotp.c b/src/widget-hotp.c
index 535d543..f6e308a 100644
--- a/src/widget-hotp.c
+++ b/src/widget-hotp.c
@@ -99,6 +99,7 @@ otputil_widget_hotp(
          otputil_config_t *            cnf )
 {
    int            rc;
+   int            hash;
    uint64_t       meth;
 
    assert(cnf != NULL);
@@ -111,6 +112,17 @@ otputil_widget_hotp(
       return(1);
    };
 
+   // set default hash
+   if (!(strncasecmp(cnf->argv[0], "hotp-", 5)))
+   {
+      if ((hash = otputil_str2md(&cnf->argv[0][5])) == -1)
+      {
+         fprintf(stderr, "%s: unsupported hash algorithm\n", cnf->prog_name);
+         return(1);
+      };
+      otputil_set_param(NULL, OTPUTIL_OPT_HOTP_HMAC, &hash);
+   };
+
    // initial processing of cli arguments
    if ((rc = otputil_arguments(cnf, cnf->argc, cnf->argv)) != 0)
       return((rc == -1) ? 0 : 1);