File: gpgme.info,  Node: Crypto Operations,  Next: Miscellaneous,  Prev: Key Management,  Up: Contexts

7.6 Crypto Operations
=====================

Sometimes, the result of a crypto operation returns a list of invalid
keys encountered in processing the request.  The following structure is
used to hold information about such a key.

 -- Data type: gpgme_invalid_key_t
     This is a pointer to a structure used to store a part of the result
     of a crypto operation which takes user IDs as one input parameter.
     The structure contains the following members:

     ‘gpgme_invalid_key_t next’
          This is a pointer to the next invalid key structure in the
          linked list, or ‘NULL’ if this is the last element.

     ‘char *fpr’
          The fingerprint or key ID of the invalid key encountered.

     ‘gpgme_error_t reason’
          An error code describing the reason why the key was found
          invalid.

* Menu:

* Decrypt::                       Decrypting a ciphertext.
* Verify::                        Verifying a signature.
* Decrypt and Verify::            Decrypting a signed ciphertext.
* Sign::                          Creating a signature.
* Encrypt::                       Encrypting a plaintext.