Golang RSA encryption and decryption program

This is a creation in Article, where the information may have evolved or changed. Package Main


Import (
"Crypto/rand"
"Crypto/rsa"
"Crypto/x509"
"Encoding/pem"
"Errors"
"FMT"
)


Encryption
Func Rsaencrypt (Origdata []byte) ([]byte, error) {
block, _: = Pem. Decode (PublicKey)//Resolve key to public key instance
If block = = Nil {
return nil, errors. New ("Public key Error")
}
Pubinterface, err: = X509. Parsepkixpublickey (block. Bytes)//parsing PEM. Decode () The block pointer instance returned
If err! = Nil {
return nil, err
}
Pub: = Pubinterface. (*rsa. PublicKey)
return RSA. Encryptpkcs1v15 (Rand. Reader, Pub, origdata)//rsa algorithm encryption
}


Decrypt
Func rsadecrypt (Ciphertext []byte) ([]byte, error) {
block, _: = Pem. Decode (Privatekey)//Resolve key to private key instance
If block = = Nil {
return nil, errors. New ("Private key error!")
}
Priv, err: = X509. Parsepkcs1privatekey (block. Bytes)//parsing PEM. Decode () The block pointer instance returned
If err! = Nil {
return nil, err
}
return RSA. Decryptpkcs1v15 (Rand. Reader, Priv, ciphertext)//rsa algorithm decryption
}


Private
var privatekey = []byte ('
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
`)


Public
var publickey = []byte ('
-----BEGIN Public KEY-----
Migfma0gcsqgsib3dqebaquaa4gnadcbiqkbgqdzsfv1qscqydy4vy+p4e3catmv
Ppxqcrvrf1cb4drkv0hau24y7m5qytt52kr539rdbkkdlam6s20lwy7+5c0dgacd
Wywd/7pecelyeipzjl07vro7ate8bfjya+wltgk9+xnuihiumukulw4kdx21+1nl
Auej6pew+dakmjwf6qidaqab
-----END Public KEY-----
`)


Func Main () {


Data, err: = Rsaencrypt ([]byte ("polaris@studygolang.com"))//rsa encryption
If err! = Nil {
Panic (ERR)
}
Fmt. PRINTLN ("RSA Encryption", string (data))
Origdata, err: = Rsadecrypt (data)//rsa decryption
If err! = Nil {
Panic (ERR)
}
Fmt. PRINTLN ("RSA decryption", String (Origdata))
}