Decryption of the RSA keys using golang

Hi Colleagues,
I am looking for help related to decryption of the RSA private keys in go.
I have the passphrase details and private key, I want to decrypt the private key which is encrypted by the third party with a passphrase and shared with me.
I have explored the crypto libraries However I think those would not help in my use case because these key are encrypted from third party and encrypted keys are shared with me as a file.
Can anyone please suggest if any other go library/Packages could help me to decrypt the private keys ?


Maybe you can try GitHub - libp2p/go-openssl: OpenSSL bindings for Go

package main

import (


func main() {

	privateKeyFile := "test_private.pem"
	passPhrase := "thisisawesome"

	encryptedPEM, err := os.ReadFile(privateKeyFile)
	if err != nil {


	pvt, err := openssl.LoadPrivateKeyFromPEMWithPassword(encryptedPEM, passPhrase)

	if err != nil {

	decryptedPEM, err := pvt.MarshalPKCS1PrivateKeyPEM()

	if err != nil {



To check, create encrypted private key using openssl:

openssl genrsa -aes128 -out test_private.pem 1024  

This should prompt you to enter and verify a pass phrase.

Now, decrypt the private key using the passphrase:

openssl rsa -in test_private.pem -out decrypted_test.pem

Compare decrypted_test.pem with the value decrypted using to check if it works.

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