Question about details of key sigining

[Quequanys]

Hi


Signing documents means that the data is hashed, 

and then the hash is encrypted with private key of 

signer. (According to Handbook)
Is this the same case when signing not a file, but 

someones key? When you sign someones keys, does it 

mean that their public key (with uids) is hashed 

and the hash is encrypted, or maybe there is no 

hashing and signing means only encryption of the 

public keys and uids? Could you point me to 

specific portions of documentation that cover this 

issue?


Thanks for help.

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