/// <summary>
/// 加密之后格式。 手机号码格式：$手机号码前3位明文$base64(encrypt(phone后8位))$111$
/// nick格式：~base64(encrypt(nick))~111~
/// </summary>
/// <param name="data">明文数据</param>
/// <param name="type">加密字段类型(例如：nick\phone)</param>
/// <param name="session">用户身份,用户级加密必填</param>
/// <param name="version">秘钥历史版本</param>
/// <returns></returns>
private string Encrypt(string data, string type, string session, Nullable <Int64> version)
{
if (string.IsNullOrEmpty(data))
{
return(data);
}
SecretContext secretContext = secretCore.GetSecret(session, version);
if (secretContext == null)
{
throw new SecretException("secretKey is null");
}
if (secretContext.Secret == null)
{
return(data);
}
string separator = null;
SecurityBiz.GetSeparatorMap().TryGetValue(type, out separator);
if (separator == null)
{
throw new SecretException("type error");
}
SecurityCounter.AddEncryptCount(type);// 计数器
bool isEncryptIndex = secretCore.IsIndexEncrypt(type, version);
// 支持密文检索
if (isEncryptIndex)
{
if (PHONE.Equals(type))
{
return(SecurityBiz.EncryptPhoneIndex(data, separator, secretContext));
}
else
{
int compressLen = secretCore.GetCompressLen();
int slideSize = secretCore.GetSlideSize();
return(SecurityBiz.EncryptNormalIndex(data, compressLen, slideSize, separator, secretContext));
}
}
else
{
if (PHONE.Equals(type))
{
return(SecurityBiz.EncryptPhone(data, separator, secretContext));
}
else
{
return(SecurityBiz.EncryptNormal(data, separator, secretContext));
}
}
}
/// <summary>
/// 密文检索。 手机号码格式：$base64(H-MAC(phone后4位))$ simple格式：base64(H-MAC(滑窗))
/// </summary>
/// <param name="data">明文数据</param>
/// <param name="type">加密字段类型(例如：simple\phone)</param>
/// <param name="session">用户身份,用户级加密必填</param>
/// <param name="version">秘钥历史版本</param>
/// <returns></returns>
private string Search(string data, string type, string session, Nullable <Int64> version)
{
if (string.IsNullOrEmpty(data))
{
return(data);
}
SecretContext secretContext = secretCore.GetSecret(session, version);
if (secretContext == null)
{
throw new SecretException("secretKey is null");
}
if (secretContext.Secret == null)
{
return(data);
}
string separator = null;
SecurityBiz.GetSeparatorMap().TryGetValue(type, out separator);
if (separator == null)
{
throw new SecretException("type error");
}
// 公共秘钥版本号用负数区分
if (session == null)
{
SecretContext publicSecretContext = new SecretContext();
publicSecretContext.Secret = secretContext.Secret;
publicSecretContext.SecretVersion = -secretContext.SecretVersion;
secretContext = publicSecretContext;
}
securityCounter.AddSearchCount(type, session);// 计数器
if (PHONE.Equals(type))
{
return(SecurityBiz.SearchPhoneIndex(data, separator, secretContext));
}
else
{
int compressLen = secretCore.GetCompressLen();
int slideSize = secretCore.GetSlideSize();
return(SecurityBiz.SearchNormalIndex(data, compressLen, slideSize, secretContext));
}
}