How to realize the Public key encryption and Private key decryption of RSA by GO
This article will explain in detail how GO implements the public key encryption and private key decryption of RSA. The editor thinks it is very practical, so I share it with you as a reference. I hope you can get something after reading this article.
Package main import ("crypto/rand", "crypto/rsa", "crypto/x509", "encoding/base64", "encoding/pem", "errors", "fmt") / / can be generated through openssl / / openssl genrsa-out rsa_private_key.pem 1024var privateKey = [] byte (`- BEGIN RSA PRIVATE KEY-MIICXQIBAAKBgQCrGh2sc5AKD1EQ8WdA1iWF4m7wXtO6WoS7Dtfd0Jm2ud+LKBQ+e7R6YIXnwfEKB/4Jm+jNtCi7/Zrx5gtEpUuVAyrEo5+qr5al5KibeJq3xyI/626IBsDMFX5o3WOoXceTF7+lgi6r+OuokqFJgpeh7YANXQ8Y8mn8ucw+Ly+LbQIDAQABAoGAGgoxbC3yP/WwyrlSk4WD1Gpvo9lqs7PO+4D4zWNP4YVMRitlWVUOVImYF3tmqbYprWCy/4tpn6KrECGImXvmkplXPxd4x3W+haZftx3VjTwh6fvT9yHp4swXxN+hLMItDdIOWS4U6wVJa77Dy7VfK303LZrPLqnxkf4oEywp5YECQQDZOz1WD7nOqOiyAlwDhfeLTmArN0f+gV6RLrxMp2XRqC2DN5nMq5O5BVVMK9LBgArNqYfxWYuMa3K2qliRDPPxAkEAyaNWq) / fDvjpK9TgztqsHIiG+cUQpWI759zt5qHNA+QF4L43dtAVZzBR/uam1jnRuM6K0ZCSZo2ITiqapmk8bPQJAEd9d3IbOssIS4xJun5uWElAQeX3C3p2mOiuuMmBTcDx2AiXA8aXsMXzO18WDQYhXWzRniuPjJ1pvxbeeMdDvAQJBAMDhuZAJEzrOAlQurfFICyvQQZ+Rx0dKhbzFLOxBS96mVDSRLYn+MFbzKPcOa3lY0O4d7xd4l2td7zmLkePlVjUCQQCY8VuIfKc0+AWvPnktKXbx9bBdJZSDginZM5cu7pdxW0uB9KZoLqgbGLIvWrLyA6SBqo87Q1j1//wFgLP+A2Gn-END RSA PRIVATE KEY- `) / / openssl//openssl rsa-in rsa_private_key.pem-pubout-out rsa_public_key.pemvar publicKey = [] byte (`-BEGIN PUBLIC KEY-MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCrGh2sc5AKD1EQ8WdA1iWF4m7wXtO6WoS7Dtfd0Jm2ud+LKBQ+e7R6YIXnwfEKB/4Jm+jNtCi7/Zrx5gtEpUuVAyrEo5+qr5al5KibeJq3xyI/626IBsDMFX5o3WOoXceTF7+lgi6r+OuokqFJgpeh7YANXQ8Y8mn8ucw+Ly+LbQIDAQAB-END PUBLIC KEY- `) / / encryption func RsaEncrypt (origData [] byte) ([] byte Error) {/ / decrypt the public key block in pem format, _: = pem.Decode (publicKey) if block = = nil {return nil, errors.New ("public key error")} / / parse the public key pubInterface, err: = x509.ParsePKIXPublicKey (block.Bytes) if err! = nil {return nil Err} / / Type assertion pub: = pubInterface. (* rsa.PublicKey) / / encryption return rsa.EncryptPKCS1v15 (rand.Reader, pub, origData)} / / decrypt func RsaDecrypt (ciphertext [] byte) ([] byte, error) {/ / decrypt block, _: = pem.Decode (privateKey) if block = = nil {return nil Errors.New ("private key error!")} / / parse the private key priv in PKCS1 format, err: = x509.ParsePKCS1PrivateKey (block.Bytes) if err! = nil {return nil, err} / / decrypt return rsa.DecryptPKCS1v15 (rand.Reader, priv, ciphertext)} func main () {data _: = RsaEncrypt ([] byte ("test data Ω.. .2") fmt.Println (base64.StdEncoding.EncodeToString (data)) origData, _: = RsaDecrypt (data) fmt.Println (string (origData))} about "how GO implements public key encryption and private key decryption of RSA", this is the end of the article. Hope that the above content can be helpful to you, so that you can learn more knowledge, if you think the article is good, please share it for more people to see.
