A key signature is placed at the beginning of a piece of music or of a section to indicate the key of the piece or section.

调号位于一篇音乐作品或一章节的开始部分，来表示该作品或章节的调域。

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The only way to guarantee that the public key signature is from the owner is for the owner to hand you the key on a disk, in person.

保证公共密钥签名来自所有者的惟一方法是，密钥的所有者亲自把磁盘上的密钥交给您。

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The second byte of "01" indicates that this is a private key operation (e.g. it's a signature).

第二个字节“01”说明这是一个私钥操作(如，它是一个签名)。

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Clinton said the two countries, which had frosty relations during the Cold War era and beyond, still differ on some key issues but that their new partnership has the potential to be a "signature accomplishment" of the two governments.

VOA: standard.2009.07.20

He says his signature on a key document was forged and he points out that all this allegedly happened before he became leader of the house.

BBC: NEWS | Americas | Brazil politician faces expulsion

The certificate itself contains the issuer's name (for example, Chase Manhattan), a serial number, a signature algorithm ID, an expiration date, an employee's public key and unique identifiers for both the issuer and the employee.

CNN: Technology - E-Signature Act may drive demand for authentication technology