jemygraw · November 13, 2014 02:24 · Nov 13, 2014
diff --git a/golang_rsa_oaep.go b/golang_rsa_oaep.go
@@ -0,0 +1,87 @@
+package main
+
+import (
+	"crypto/rand"
+	"crypto/rsa"
+	"crypto/sha1"
+	"crypto/x509"
+	"encoding/base64"
+	"encoding/pem"
+	"fmt"
+)
+
+func main() {
+	var publicKeyData = `-----BEGIN PUBLIC KEY-----
+MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAygGoUiTD+LjwZIgwFZyj
+iibWNQ2LM9xZ2pjKQGP8iUBtAuAW629/Ofw8qxToMyixPrG4A7j8+KOPwYrWPGV6
+Og//4zm3cG+1hQvnNUWtMjHHBY8OByUPQ6/T8XHER1DxFBfnWfFLZ1yFX6oNNuvt
+LgOreI6ehehJd5IB/4mOjMvFEBgOEejado2n55VNdcFpdQ3RcvGV+f/rl/lsIM08
+QvL3lc5gqawj53sW9YZi1DL/uN48R+ghvAYhtx2jpHDBvlH1NCF1rU6CynYsgV9Q
+Iksv0ihwl4T+k5F9ir0uv0WIS6kKKS1SRpAprRKunos4PlE8l2+jC6LaJUPhDZlj
+/wIDAQAB
+-----END PUBLIC KEY-----
+`
+	var privateKeyData = `
+-----BEGIN RSA PRIVATE KEY-----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+-----END RSA PRIVATE KEY-----
+`
+	pubKeyBlock, _ := pem.Decode([]byte(publicKeyData))
+	hash := sha1.New()
+	random := rand.Reader
+	msg := []byte("helloworldjemyme")
+	var pub *rsa.PublicKey
+	pubInterface, parseErr := x509.ParsePKIXPublicKey(pubKeyBlock.Bytes)
+	if parseErr != nil {
+		fmt.Println("Load public key error")
+		panic(parseErr)
+	}
+	pub = pubInterface.(*rsa.PublicKey)
+	encryptedData, encryptErr := rsa.EncryptOAEP(hash, random, pub, msg, nil)
+	if encryptErr != nil {
+		fmt.Println("Encrypt data error")
+		panic(encryptErr)
+	}
+	encodedData := base64.URLEncoding.EncodeToString(encryptedData)
+	fmt.Println(encodedData)
+	fmt.Println()
+	fmt.Println("------I AM JUST A LINE------")
+	fmt.Println()
+	privateKeyBlock, _ := pem.Decode([]byte(privateKeyData))
+	var pri *rsa.PrivateKey
+	pri, parseErr = x509.ParsePKCS1PrivateKey(privateKeyBlock.Bytes)
+	if parseErr != nil {
+		fmt.Println("Load private key error")
+		panic(parseErr)
+	}
+	decryptedData, decryptErr := rsa.DecryptOAEP(hash, random, pri, encryptedData, nil)
+	if decryptErr != nil {
+		fmt.Println("Decrypt data error")
+		panic(decryptErr)
+	}
+	fmt.Println(string(decryptedData))
+}