Provided by: gnutls-doc_3.0.11+really2.12.14-5ubuntu3_all
gnutls_pkcs11_set_pin_function - API function
#include <gnutls/gnutls.h> void gnutls_pkcs11_set_pin_function(gnutls_pkcs11_pin_callback_t fn, void * userdata);
gnutls_pkcs11_pin_callback_t fn The PIN callback void * userdata data to be supplied to callback
This function will set a callback function to be used when a PIN is required for PKCS 11 operations. Callback for PKCS11 PIN entry. The callback provides the PIN code to unlock the token with label 'token_label', specified by the URL The PIN code, as a NUL-terminated ASCII string, should be copied into the 'pin' buffer (of maximum size pin_max), and return 0 to indicate success. Alternatively, the callback may return a negative gnutls error code to indicate failure and cancel PIN entry (in which case, the contents of the 'pin' parameter are ignored). When a PIN is required, the callback will be invoked repeatedly (and indefinitely) until either the returned PIN code is correct, the callback returns failure, or the token refuses login (e.g. when the token is locked due to too many incorrect PINs!). For the first such invocation, the 'attempt' counter will have value zero; it will increase by one for each subsequent attempt.
On success, GNUTLS_E_SUCCESS is returned, otherwise a negative error value.
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