parse-plist.sh

#! /bin/bash

declare -A pvalue

parse_plist() {
    declare -a pl=$1
    pvalue=()
    local i=0
    while [[ i -lt ${#pl[@]} ]]
    do
        pvalue[${pl[ i ]}]=${pl[ i+1 ]}
        i=$(( i + 2 ))
    done
}

parse_plist '(:iv "1m687rP6n8Ch7VfNu0joEw==" :length 2 :message "iFfFOl/sMxLb6ExwOuxFvsnvU1L1RNp4uarw1PHSR6M=")'
echo "IV is ${pvalue[:iv]}"