Creates PFX and generates PFX password

create_pfx.sh

#!/bin/bash
# Create PFX File given private and public key
# usage: ./create_pfx.sh <private_key> <public_key>

# ARG Input
PRIV_KEY="$1"
#echo "${PRIV_KEY}"
PUB_KEY="$2" 
#echo "${PUB_KEY}"
#------------------------
# Generate PFX File Password from 'a-zA-Z0-9!@#$%^&' chars and of length PSSWD_LGTH
generate_PFX_pass(){
    PSSWD_LGTH=12
    PFX_PASS="$(head -c 500 /dev/urandom | LC_ALL=C tr -dc 'a-zA-Z0-9!#$%^&'| fold -w ${PSSWD_LGTH} | head -n 1 )"
    echo -e "PFX PASSWORD: \n ${PFX_PASS} \n"
}
#------------------------
# Create PFX using openSSL
create_PFX(){
    openssl pkcs12 -export -out "$(echo "${PUB_KEY}" | rev | cut -d "." -f2- | rev ).pfx" -inkey "${PRIV_KEY}" -in "${PUB_KEY}"        
}
#------------------------
main(){
    #private key
    if [[ -f "${PRIV_KEY}" ]]; then
        case $PRIV_KEY in
            *.key) PRIVKEY_FMT="key";;
            *.pem) PRIVKEY_FMT="pem";;
            *) echo "valid private key extensions: <file.key>, <file.pem>"; exit 1;;
        esac
    else
        echo "create_pfx.sh: private key file not found."
        exit 1
    fi
    #public key
    if [[ -f "${PUB_KEY}" ]]; then
        case $PUB_KEY in
            *.pem) 
                if [[ "${PRIVKEY_FMT}" == "pem" ]]; then
                    echo "pub/priv key must have different extensions!"
                    exit 1 
                fi ;;
            *.crt) ;;
            *) echo " valid public key extensions: <file.pem> <file.crt> "
        esac
    else
        echo "create_pfx.sh: public key file not found"
    fi
    #echo "${PRIVKEY_FMT}"
    generate_PFX_pass
    create_PFX
}
main