电子信息交换中的数字签名提供了与纸质邮件中手写签名相同的功能。因此，它适用于提供实体身份验证、数据源身份验证、不可否认性和数据完整性。 ISO/IEC 9796-3:2006规定了提供部分或全部消息恢复的数字签名机制，旨在减少存储和传输开销。 ISO/IEC 9796-3:2006规定了基于有限域或有限域上椭圆曲线的离散对数问题的机制。 ISO/IEC 9796-3:2006定义了冗余类型:自然冗余、附加冗余或两者兼有。 ISO/IEC 9796-3:2006给出了数字签名的通用模型，该模型提供了部分或全部消息恢复，旨在减少存储和传输开销。 ISO/IEC 9796-3:2006规定了六种提供数据恢复的数字签名方案:NR、ECNR、ECMR、ECAO、ECPV和ECKNR。NR定义在素域上；ECNR、ECMR、ECAO、ECPV和ECKNR定义在有限域上的椭圆曲线上。

A digital signature in electronic exchange of information provides the same kind of facilities that are expected from a handwritten signature in paper-based mail. Hence it is applicable to providing entity authentication, data origin authentication, non-repudiation, and integrity of data. ISO/IEC 9796-3:2006 specifies digital signature mechanisms giving partial or total message recovery aiming at reducing storage and transmission overhead. ISO/IEC 9796-3:2006 specifies mechanisms based on the discrete logarithm problem of a finite field or an elliptic curve over a finite field. ISO/IEC 9796-3:2006 defines types of redundancy: natural redundancy, added redundancy, or both. ISO/IEC 9796-3:2006 gives the general model for digital signatures giving partial or total message recovery aiming at reducing storage and transmission overhead. ISO/IEC 9796-3:2006 specifies six digital signature schemes giving data recovery: NR, ECNR, ECMR, ECAO, ECPV, and ECKNR. NR is defined on a prime field; ECNR, ECMR, ECAO, ECPV, and ECKNR are defined on an elliptic curve over a finite field.