标准摘要
[中文适用范围]： ISO/IEC 9796 的这一部分指定了三种提供消息恢复的数字签名方案，其中两种是确定性的（非随机的），另一种是随机的。 所有三种方案的安全性都是基于分解大数的难度。 所有三种方案都可以提供全部或部分消息恢复。 ISO/IEC 9796 的这一部分规定了三种签名方案的密钥生成方法。 然而，密钥管理和随机数生成技术（如随机签名方案所需）超出了 ISO/IEC 9796 本部分的范围。 ISO/IEC 9796 本部分规定的第一种机制仅适用于现有的实现，并出于向后兼容性的原因而保留。 [外文原描述]： ISO/IEC 9796-2:2010 specifies three digital signature schemes giving message recovery, two of which are deterministic (non-randomized) and one of which is randomized. The security of all three schemes is based on the difficulty of factorizing large numbers. All three schemes can provide either total or partial message recovery. ISO/IEC 9796-2:2010 specifies the method for key production for the three signature schemes. However, techniques for key management and for random number generation (as required for the randomized signature scheme), are outside the scope of ISO/IEC 9796-2:2010. The first mechanism specified in ISO/IEC 9796-2:2010 is only applicable for existing implementations, and is retained for reasons of backward compatibility.
英文名称Information technology - Security techniques - Digital signature schemes giving message recovery - Part 2: Integer factorization based mechanisms