dsa

https://tools.ietf.org/html/rfc8032#section-5.1.7


package main

import (
   "crypto/ecdsa"
   "crypto/ed25519"
   "crypto/elliptic"
   "crypto/rand"
   "fmt"
   "time"
)

func main() {

   pri,_ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
   digests := make([]byte,32);
   sum1 := 0
   start1 := time.Now()
   for i:=0; i<0x3fff; i++{
      rand.Read(digests)
      r,s,_ :=ecdsa.Sign(rand.Reader, pri, digests);
      b := ecdsa.Verify((&pri.PublicKey), digests, r, s);
      if !b {
         sum1++
      }
   }
   en1 := time.Now()

   sum2 := 0
   epub, epri, _ := ed25519.GenerateKey(rand.Reader)
   start2 := time.Now()
   for i:=0; i<0x3fff; i++{
      rand.Read(digests)
      s := ed25519.Sign(epri, digests)
      b := ed25519.Verify(epub, digests, s)
      if !b {
         sum2++
      }
   }
   en2 := time.Now()
   fmt.Println("time :")
   fmt.Println(sum1)
   fmt.Println(en1.Sub(start1))
   fmt.Println(sum2)
   fmt.Println(en2.Sub(start2))
}