34 lines
663 B
Go
34 lines
663 B
Go
|
//One-Time Pad generator
|
||
|
|
|
||
|
|
package otpgen
|
||
|
|
|
||
|
|
import (
|
||
|
|
"crypto/rand"
|
||
|
|
"math/big"
|
||
|
|
"one-time-pad-utils/pad_definitions"
|
||
|
|
)
|
||
|
|
|
||
|
|
|
||
|
|
func GenerateOTP(chunks int) string {
|
||
|
|
count := 1
|
||
|
|
otpstring := ""
|
||
|
|
|
||
|
|
for count < (chunks*5)+1{
|
||
|
|
n, err := rand.Int(rand.Reader, big.NewInt(36)) // generate new cryptographically secure random number
|
||
|
|
if err != nil {
|
||
|
|
panic(err)
|
||
|
|
}
|
||
|
|
otpstring += paddefinitions.NumToCharMap[int(n.Int64())] // print that number using the character map
|
||
|
|
if count % 5 == 0 { // add a space every 5 characters, newline after 10 chunks
|
||
|
|
if count % 50 == 0{
|
||
|
|
otpstring += "\n"
|
||
|
|
} else {
|
||
|
|
otpstring += " "
|
||
|
|
}
|
||
|
|
}
|
||
|
|
count+=1
|
||
|
|
}
|
||
|
|
|
||
|
|
return otpstring
|
||
|
|
}
|