First of all, we need to know the function of signature, S60.

The third edition has greatly improved the security, and has stricter regulations on the installation and operation of third-party software in the system. Some operations involving mobile phone software and hardware security/personal information security are particularly restricted (for example, automatic startup of mobile phone startup is one of the restricted functions). In order to realize these "specially restricted" functions, the application must obtain a "signature". In other words, someone should be responsible for the safety of this operation! A program without any signature cannot be installed and run.

2. What is a signature?

Signature: It refers to writing specific tag information in a specific field of an application, indicating that the software has passed the audit of the signer.

The signer is responsible for the security of the software.

3. The type of Saipan signature.

Among them, there are three kinds of signatures:

Intelligent mobile terminal operating system

Sign.

that is

Official signature of Symbian mobile phone operating system. pass

Intelligent mobile terminal operating system

Security certification software will be obtained.

Intelligent mobile terminal operating system

about

Sign. This software has the highest security level. Can be installed/run normally on the mobile phone/and can realize all the functions provided by the software.

acquire

Symbian signature requires that the software author directly and

Intelligent mobile terminal operating system

Official transactions, for various reasons,

Not all software authors have the ability to obtain this certification.

Author's signature.

The author of the software signed his name when he released the software. This kind of software can be installed and run on the mobile phone (it may encounter security problems).

Sex warning, can be skipped). But those "specially restricted" functions cannot be realized. If a piece of software doesn't involve such a function at all, then

It is entirely possible for the software author to sign by himself. Another possibility is that although some functions of the software are "specially restricted"

Range, but not the main function. The author of the software may also publish an "author's signature version", and most of them can be used under normal circumstances.

Function, but some specific functions will be lost. For example, there is such a version of the "incoming call" software, almost all functions can be used, but not.

Boot up.