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Editor to share with you Java how to achieve RSA algorithm, I believe that most people do not know much about it, so share this article for your reference, I hope you can learn a lot after reading this article, let's go to understand it!

The following is a reference clip:

Package rsa

Import java.math.BigInteger

Public class RSA {

Private long p,q,e,d,n

Public RSA () {

Int pIndex = (int) (Math.random () * 10)

Int qIndex

Int eIndex

Do {

QIndex = (int) (Math.random () * 10)

}

While (qIndex==pIndex)

Do {

EIndex = (int) (Math.random () * 10)

}

While (eIndex==pIndex | | eIndex==pIndex)

P = 1033

Q = 2017

E = 29437

N = puniq

D = calculateD ()

}

Private long calculateD () {

Long t0 = 0, T1 = 1, T2 =-1

Long R0 = (pmae1) * (qmer1), m = r0Magi R1 = e, R2 =-1

Do {

Long Q = r0/r1

R2 = r0-r1*q

If (R2 benchmark 0) break

T2 = t0-T1 / Q

While (t2pragm) {

T2% = m

}

R0 = R1

R1 = R2

T0 = T1

T1 = T2

} while (R2 cycles 0)

If (r1room1) {

Return 0

}

Else {

Return t2

}

}

Public long getE () {

Return e

}

Public long getN () {

Return n

}

Public long getD () {

Return d

}

Public BigInteger encode (BigInteger data) {

Return pow (data,d) .mod (new BigInteger (n + ""))

}

Public BigInteger decode (BigInteger code) {

Return pow (code,e) .mod (new BigInteger (n + ""))

}

Public BigInteger pow (BigInteger data,long p) {

Data = data.pow ((int) p)

Return data

}

Public static void main (String args []) {

RSA rsa = new RSA ()

BigInteger data = new BigInteger ("222222")

Long oldtime = System.currentTimeMillis ()

BigInteger code = rsa.encode (data)

Long newtime = System.currentTimeMillis ()

Double codetime = (double) (newtime-oldtime) / 1000

Oldtime = System.currentTimeMillis ()

BigInteger decode = rsa.decode (code)

Newtime = System.currentTimeMillis ()

Double decodetime = (double) (newtime-oldtime) / 1000

System.out.println ("privateKey:" + rsa.d)

System.out.println ("publickKey:" + rsa.e)

System.out.println ("N:" + rsa.n)

System.out.println ("data:" + data)

System.out.println ("code:" + code+ "time:" + codetime)

System.out.println ("decode:" + decode+ "time:" + decodetime)

}

} these are all the contents of the article "how to implement the RSA algorithm in Java". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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