What is Kotlin equivalent of funtion openssl_private_decrypt?

Question

I have used openssl_public_encrypt function in a PHP-based server to encrypt a message with a public key. The crypted message is sent to a Kotlin-based server. If it were in PHP, the decryption would be done by using openssl_private_decrypt . How can I decrypt the message in Kotlin?

Answer 1

So I found the equivalent code in Kotlin:

private fun decrypt(cryptedData: ByteArray): String {
    val cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding")  //"PKCS1Padding" is the default padding
    cipher.init(Cipher.DECRYPT_MODE, key)
    val res = cipher.doFinal(cryptedData).toHexString()
    val decrypted = hexToAscii(res)
    return decrypted
}