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llaves y firmas con ssh

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f 2022-03-14 16:32:57 -03:00
parent 2d7088e16c
commit 7c4981bb29
1 changed files with 6 additions and 8 deletions
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14
raspberry/funciones
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@ -11,27 +11,25 @@ get_stack () {
# Generar una llave privada ECDSA si no existe
#
# Uso: generate_private_key "comentario"
generate_private_key () {
test -f "$private_key" && return 1
ssh-keygen -t ecdsa -f "$private_key" -N "" -m PEM
ssh-keygen -t ecdsa -f "$private_key" -N "" -C "$@"
}
# Firmar el archivo usando la llave privada.
#
# Uso: sign_file archivo.json
# Devuelve: archivo.json.sign
# Devuelve: La firma
sign_file () {
local _file="$1"
test ! -f "$_file" && return 1
test -f "$_file.sig" || ssh-keygen -Y sign -f "$private_key" -n file "$_file" 2>&1 >/dev/null
if ! openssl dgst -sha512 -sign "$private_key" "$_file" | base64 | tr -d "\n" > "$_file.sign" ; then
rm -f "$_file.sign"
return 1
fi
echo "$_file.sign"
cat "${_file}.sig" | grep -v SIGNATURE | tr -d "\n"
}