signcsr: Autodetect SPKAC by content

1 files changed, 1 insertions, 1 deletions

diff --git a/signcsr.sh b/signcsr.sh
index 98392bd..f9fd01d 100755
--- a/signcsr.sh
+++ b/signcsr.sh
@@ -29,7 +29,7 @@ fi
 mkdir -pv "$CA"/signed "$CA"/temp "$CA"/certs
 SERIAL=$(cat "$CA"/ca/"$CA".serial)
 
-if [[ "$1" =~ \.spkac$ ]]; then # SPKAC HTML5 <keygen> standard
+if grep ^SPKAC "$1"; then # SPKAC HTML5 <keygen> standard
   openssl spkac -in "$1" # print key size
   openssl ca -config "$OPENSSL_CONFIG" -spkac "$1" -notext
 else # x509 CSR