private static string LianlianpayDecrypt(string base64_ciphertext, string base64_encrypted_aes_key, string base64_nonce, ICipherParameters trader_pri_key)
{
var key = RSA_ECB_OAEPWithSHA1AndMGF1Padding.Decrypt(base64_encrypted_aes_key, trader_pri_key);
var nonce = Convert.FromBase64String(base64_nonce);
var iv = CreateCtrIv(nonce);
return(AES_CTR_NoPadding.Decrypt(base64_ciphertext, key, iv));
}
private static string LianlianpayEncrypt(string req, ICipherParameters public_key, string hmack_key, string version, string aes_key, string nonce)
{
var base64_hmack_key = RSA_ECB_OAEPWithSHA1AndMGF1Padding.Encrypt(hmack_key, public_key);
var base64_aes_key = RSA_ECB_OAEPWithSHA1AndMGF1Padding.Encrypt(aes_key, public_key);
var base64_nonce = Convert.ToBase64String(Encoding.UTF8.GetBytes(nonce));
var iv = CreateCtrIv(Encoding.UTF8.GetBytes(nonce));
var encry = AES_CTR_NoPadding.Encrypt(req, aes_key, iv);
var data = base64_nonce + "$" + encry;
var sign = HMACSHA256.Compute(Encoding.UTF8.GetBytes(data), Encoding.UTF8.GetBytes(hmack_key));
var base64_sign = Convert.ToBase64String(sign);
return(version + "$" + base64_hmack_key + "$" + base64_aes_key + "$" + base64_nonce + "$" + encry + "$" + base64_sign);
}
private static string LianlianpayEncrypt(string req, AsymmetricKeyParameter public_key, string hmack_key, string version, string aes_key, string nonce)
{
var b64Hmack_key = RSA_ECB_OAEPWithSHA1AndMGF1Padding.Encrypt(hmack_key, public_key);
var b64Aes_key = RSA_ECB_OAEPWithSHA1AndMGF1Padding.Encrypt(aes_key, public_key);
var b64Nonce = Convert.ToBase64String(Encoding.UTF8.GetBytes(nonce));
var iv = CreateCtrIv(Encoding.UTF8.GetBytes(nonce));
var encry = AES_CTR_NoPadding.Encrypt(req, aes_key, iv);
var message = b64Nonce + "$" + encry;
var sign = HMACSHA256.Compute(Encoding.UTF8.GetBytes(message), Encoding.UTF8.GetBytes(hmack_key));
var b64Sign = Convert.ToBase64String(sign);
return(version + "$" + b64Hmack_key + "$" + b64Aes_key + "$" + b64Nonce + "$" + encry + "$" + b64Sign);
}
