GPGME signing failed: Bad passphrase

[Justus Winter]

yuriping at sohu.com writes:

> Hi, SirI have test "tests/gpg/t-sign.c" and done some necessary
> modification as following:0. file "t-support.h", function
> "passphrase_cb"    char *pass = "057128"; // altered
> with the passphrase of my key1. file "t-sign.c", function "main"#if 1
> // be 0 originally, now enable this section  {   
> gpgme_key_t akey;//    err = gpgme_get_key (ctx,
> "0x68697734", &akey, 0);    err = gpgme_get_key
> (ctx, "0x5FEC9A32", &akey, 1);    // ID of my key
> 0x5FEC9A32    fail_if_err (err);    err
> = gpgme_signers_add (ctx, akey);    fail_if_err
> (err);    gpgme_key_unref (akey);  }#endifRun
> ./t-sign, the program stoped at   /* First a normal
> signature.  */  err = gpgme_data_new (&out); 
> fail_if_err (err);  err = gpgme_op_sign (ctx, in, out,
> GPGME_SIG_MODE_NORMAL);// stop infinitely here  fail_if_err
> (err);  result = gpgme_op_sign_result (ctx);  check_result
> (result, GPGME_SIG_MODE_NORMAL);  print_data (out); 
> gpgme_data_release (out);I don't know how to solve this issue.I just
> want to invoke GPGME, to sign a file with passphrase delivery
> automatically...Thank a lot for any reply!

You may or may not need to configure gpgme to use the loopback pinentry
mode, and may or may not (depending on your specific version of gnupg)
allow the loopback pinentry mode in the first place.

See
https://git.gnupg.org/cgi-bin/gitweb.cgi?p=gpgme.git;a=commitdiff;h=329ab93f7ed862d7f4c0501fca5355936a74ac52

Justus
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