Contains the source code from the course work throughout my undergraduate Computer Engineering degree at Brigham Young University. There is a mixture of Go, Python, C, C++, Java, VHDL, Verilog, Matlab, Bash, Assembly, etc..
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package main
import (
"fmt"
"log"
"os"
"s.mcquay.me/dm/school/cs465/aes"
"github.com/spf13/cobra"
)
var key128 = aes.Block{
0x2b, 0x28, 0xab, 0x09,
0x7e, 0xae, 0xf7, 0xcf,
0x15, 0xd2, 0x15, 0x4f,
0x16, 0xa6, 0x88, 0x3c,
}
var key192 = aes.Block{
0x00, 0x04, 0x08, 0x0c, 0x10, 0x14,
0x01, 0x05, 0x09, 0x0d, 0x11, 0x15,
0x02, 0x06, 0x0a, 0x0e, 0x12, 0x16,
0x03, 0x07, 0x0b, 0x0f, 0x13, 0x17,
}
var key256 = aes.Block{
0x00, 0x04, 0x08, 0x0c, 0x10, 0x14, 0x18, 0x1c,
0x01, 0x05, 0x09, 0x0d, 0x11, 0x15, 0x19, 0x1d,
0x02, 0x06, 0x0a, 0x0e, 0x12, 0x16, 0x1a, 0x1e,
0x03, 0x07, 0x0b, 0x0f, 0x13, 0x17, 0x1b, 0x1f,
}
func main() {
var keysize int
var decrypt bool
var ascii bool
var aes = &cobra.Command{
Use: "aes",
Short: "aes cipher",
Long: `perform aes cipher`,
Run: func(cmd *cobra.Command, args []string) {
if len(args) < 1 {
fmt.Println("missing input, see -h (--help) for more info")
os.Exit(1)
}
for _, arg := range args {
all := aes.BlockGen(arg)
if ascii {
switch keysize {
case 128:
fmt.Println(aes.ToString(all, 128, key128, decrypt))
case 192:
fmt.Println(aes.ToString(all, 192, key192, decrypt))
case 256:
fmt.Println(aes.ToString(all, 256, key256, decrypt))
default:
log.Fatal("keysize not valid")
}
} else {
switch keysize {
case 128:
fmt.Println(aes.ToHex(all, 128, key128, decrypt))
case 192:
fmt.Println(aes.ToHex(all, 192, key192, decrypt))
case 256:
fmt.Println(aes.ToHex(all, 256, key256, decrypt))
default:
log.Fatal("keysize not valid")
}
}
}
},
}
aes.Flags().IntVarP(
&keysize,
"keysize",
"k",
0,
"keysize",
)
aes.Flags().BoolVarP(
&ascii,
"ascii",
"a",
false,
"display in ascii (may mess up terminal :) )",
)
aes.Flags().BoolVarP(
&decrypt,
"decrypt",
"d",
false,
"decrypt",
)
var rootCmd = &cobra.Command{Use: "app"}
rootCmd.AddCommand(aes)
rootCmd.Execute()
}