Make sure $otp_algorithm is lowercase (#33)

Otherwise oathtool is unhappy.

1 files changed, 1 insertions, 1 deletions

diff --git a/otp.bash b/otp.bash
index c46954e..95f171a 100755
--- a/otp.bash
+++ b/otp.bash
@@ -243,7 +243,7 @@ cmd_otp_code() {
   case "$otp_type" in
     totp)
       cmd="$OATH -b --totp"
-      [[ -n "$otp_algorithm" ]] && cmd+="=$otp_algorithm"
+      [[ -n "$otp_algorithm" ]] && cmd+="=${otp_algorithm,,}"
       [[ -n "$otp_period" ]] && cmd+=" --time-step-size=$otp_period"s
       [[ -n "$otp_digits" ]] && cmd+=" --digits=$otp_digits"
       cmd+=" $otp_secret"