gpgme：簽署數據時選擇私鑰

使用gpgme（gpg/gnupg的開發庫），我試圖簽署一些數據。在鑰匙圈我有更多的1私鑰，所以我想選擇正確的一個。此失敗：「不可用的密鑰（117440566）」。關鍵是用gnupg2本身生成的。當使用gnupg時，問題也會發生。gpgme：簽署數據時選擇私鑰

sec 1024R/14B7E8E6 2015-05-27 
     Key fingerprint = 95C7 6C5E F839 43DA 2F32 2CF4 D2C2 5144 14B7 E8E6 
uid     testkey2 (testkey2) <[email protected]> 
ssb 1024R/ED8059EA 2015-05-27 

pub rsa1024/14B7E8E6 
    created: 2015-05-27 expires: never  usage: SC 
    trust: ultimate  validity: ultimate 
sub rsa1024/ED8059EA 
    created: 2015-05-27 expires: never  usage: E 
sub rsa1024/74D6F5C6 
    created: 2015-05-31 expires: never  usage: S

我首先檢查是否有入選的私鑰：

gpgme_op_keylist_start(..., ..., 1); 
if (gpgme_op_keylist_nex() == GPG_ERR_NO_ERROR) { proceed }

進行數字簽名：

gpgme_new() 
gpgme_set_pinentry_mode(GPGME_PINENTRY_MODE_LOOPBACK) // yes i installed v2.1 
gpgme_set_passphrase_cb() 
/* ...binary to gpgme_data_t... */ 
gpgme_data_set_encoding(GPGME_DATA_ENCODING_BINARY) 
gpgme_signers_clear() 
gpgme_signers_add() // <- that key that I checked for existance earlier 
if (gpgme_signers_count() != 1) { fail(); } // sanity check 
gpgme_op_encrypt_sign(ctx, recipient, GPGME_ENCRYPT_ALWAYS_TRUST /* FIXME */, data_in, sig);

現在gpgme_op_encrypt_sign總是失敗與「不可用密鑰（ 117440566）「錯誤。任何提示/提示？

軟件版本：

gnupg 1.4.18-7 
gnupg-agent  2.1.4-1 
gnupg2 2.1.4-1 
libgpgme++2  4:4.14.2-2+b1 
libgpgme11:amd64   1.5.1-6 
libgpgme11-dev 1.5.1-6 
python-gnupginterface 0.3.2-9.1

我啓用調試跟蹤，但它並不能幫助我很多：

<0x1927> gpgme_debug: level=4 
<0x1927> gpgme_check_version: call: 0=(nil), req_version=(null), VERSION=1.5.1 
<0x1927> gpgme_check_version_internal: call: 0=(nil), req_version=(null), offset_sig_validity=60 
<0x1927> gpgme_set_locale: enter: ctx=(nil), category=0, value=C 
<0x1927> gpgme_set_locale: leave 
<0x1927> gpgme_set_locale: enter: ctx=(nil), category=5, value=C 
<0x1927> gpgme_set_locale: leave 
<0x1927> gpgme-dinfo: gpgconf='/usr/bin/gpgconf' 
<0x1927> gpgme-dinfo:  gpg='/usr/bin/gpg2' 
<0x1927> gpgme-dinfo: gpgsm='/usr/bin/gpgsm' 
<0x1927> gpgme-dinfo: homedir='/home/folkert/.gnupg' 
<0x1927> gpgme-dinfo: agent='/home/folkert/.gnupg/S.gpg-agent' 
<0x1927> gpgme-dinfo: uisrv='/home/folkert/.gnupg/S.uiserver' 
<0x1927> gpgme_new: enter: r_ctx=0x7fff5afd07a8 
<0x1927> gpgme_new: leave: ctx=0x20c0810 
<0x1927> gpgme_op_keylist_start: enter: ctx=0x20c0810, pattern=0BF38589, secret_only=1 
<0x1927> _gpgme_add_io_cb: call: ctx=0x20c0810, fd 4, dir=1 -> tag=0x20c26b0 
<0x1927> _gpgme_add_io_cb: call: ctx=0x20c0810, fd 6, dir=1 -> tag=0x20c2800 
<0x1927> gpgme:gpg_io_event: call: gpg=0x20c0c10, event 0x7fd8b1a20ad0, type 0, type_data (nil) 
<0x1927> gpgme_op_keylist_start: leave 
<0x1927> gpgme_op_keylist_next: enter: ctx=0x20c0810 
<0x1927> _gpgme_run_io_cb: call: item=0x20c2820, need to check 
<0x1927> _gpgme_run_io_cb: call: item=0x20c2820, handler (0x20c0c10, 6) 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c0810, key = (nil), line = sec:u:2048:1:CC73A8A60BF38589:1433443717:::u:::scESC:::::: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c0810, key = 0x20c2850, line = fpr:::::::::20CD3FF80DA6C1E46CD9F135CC73A8A60BF38589: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c0810, key = 0x20c2850, line = uid:u::::1433443717::9963CFDE0C8920AD077B06A281992C4008E67E4F::testkey3 (testkey3) <[email protected]>: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c0810, key = 0x20c2850, line = ssb:u:2048:1:22317805D48C1491:1433443717::::::e:::::: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c0810, key = 0x20c2850, line = fpr:::::::::FB6FFB7D8BEC710A745DE86C22317805D48C1491: 
<0x1927> _gpgme_run_io_cb: call: item=0x20c26d0, need to check 
<0x1927> _gpgme_run_io_cb: call: item=0x20c26d0, handler (0x20c0c10, 4) 
<0x1927>  _gpgme_remove_io_cb: call: data=0x20c26b0, setting fd 0x4 (item=0x20c26d0) done 
<0x1927> _gpgme_run_io_cb: call: item=0x20c2820, need to check 
<0x1927> _gpgme_run_io_cb: call: item=0x20c2820, handler (0x20c0c10, 6) 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c0810, key = 0x20c2850, line = (null) 
<0x1927> gpgme:gpg_io_event: call: gpg=0x20c0c10, event 0x7fd8b1a20ad0, type 2, type_data 0x20c2850 
<0x1927>  _gpgme_remove_io_cb: call: data=0x20c2800, setting fd 0x6 (item=0x20c2820) done 
<0x1927> gpgme:gpg_io_event: call: gpg=0x20c0c10, event 0x7fd8b1a20ad0, type 1, type_data 0x7fff5afd0700 
<0x1927> gpgme_op_keylist_next: leave: key=0x20c2850 (20CD3FF80DA6C1E46CD9F135CC73A8A60BF38589) 
<0x1927> gpgme_release: call: ctx=0x20c0810 
<0x1927> gpgme_new: enter: r_ctx=0x7fff5afd0818 
<0x1927> gpgme_new: leave: ctx=0x20c2210 
<0x1927> gpgme_op_keylist_start: enter: ctx=0x20c2210, pattern=4BE78BDCF3F5352CF624A6DF3AD6F8118300CC02, secret_only=0 
<0x1927> _gpgme_add_io_cb: call: ctx=0x20c2210, fd 4, dir=1 -> tag=0x20c1f50 
<0x1927> _gpgme_add_io_cb: call: ctx=0x20c2210, fd 6, dir=1 -> tag=0x20c1fa0 
<0x1927> gpgme:gpg_io_event: call: gpg=0x20c0c10, event 0x7fd8b1a20ad0, type 0, type_data (nil) 
<0x1927> gpgme_op_keylist_start: leave 
<0x1927> gpgme_op_keylist_next: enter: ctx=0x20c2210 
<0x1927> _gpgme_run_io_cb: call: item=0x20c1fc0, need to check 
<0x1927> _gpgme_run_io_cb: call: item=0x20c1fc0, handler (0x20c0c10, 6) 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c2210, key = (nil), line = tru::0:1433443869:2410285847:3:1:5 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c2210, key = (nil), line = pub:-:1024:17:3AD6F8118300CC02:1039074767:::-:::scESC:::::: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c2210, key = 0x20c2b70, line = fpr:::::::::4BE78BDCF3F5352CF624A6DF3AD6F8118300CC02: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c2210, key = 0x20c2b70, line = uid:-::::1203999932::275AAD3E991F1962AD510CC96760907BE70FE668::Bla <[email protected]>: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c2210, key = 0x20c2b70, line = uid:-::::1203999938::59689891229F1817EF66BFC63D9D0BB2F45F5209::Bla <[email protected]>: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c2210, key = 0x20c2b70, line = uid:r::::::8A709552E7AB85B53DDAE18A48C0978E5EBF5547::Bla <[email protected]>: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c2210, key = 0x20c2b70, line = sub:-:2048:16:942E547C12A6B1C2:1039075030::::::e:::::: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c2210, key = 0x20c2b70, line = fpr:::::::::E69EF5226BBF7EC14F1D7D96942E547C12A6B1C2: 
<0x1927> _gpgme_run_io_cb: call: item=0x20c1f70, need to check 
<0x1927> _gpgme_run_io_cb: call: item=0x20c1f70, handler (0x20c0c10, 4) 
<0x1927>  _gpgme_remove_io_cb: call: data=0x20c1f50, setting fd 0x4 (item=0x20c1f70) done 
<0x1927> _gpgme_run_io_cb: call: item=0x20c1fc0, need to check 
<0x1927> _gpgme_run_io_cb: call: item=0x20c1fc0, handler (0x20c0c10, 6) 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c2210, key = 0x20c2b70, line = (null) 
<0x1927> gpgme:gpg_io_event: call: gpg=0x20c0c10, event 0x7fd8b1a20ad0, type 2, type_data 0x20c2b70 
<0x1927>  _gpgme_remove_io_cb: call: data=0x20c1fa0, setting fd 0x6 (item=0x20c1fc0) done 
<0x1927> gpgme:gpg_io_event: call: gpg=0x20c0c10, event 0x7fd8b1a20ad0, type 1, type_data 0x7fff5afd0760 
<0x1927> gpgme_op_keylist_next: leave: key=0x20c2b70 (4BE78BDCF3F5352CF624A6DF3AD6F8118300CC02) 
<0x1927> gpgme_release: call: ctx=0x20c2210 
<0x1927> gpgme_new: enter: r_ctx=0x7fff5afd07c8 
<0x1927> gpgme_new: leave: ctx=0x20c2550 
<0x1927> gpgme_set_passphrase_cb: call: ctx=0x20c2550, passphrase_cb=(nil)/(nil) 
<0x1927> gpgme_set_pinentry_mode: call: ctx=0x20c2550, pinentry_mode=4 
<0x1927> gpgme_set_passphrase_cb: call: ctx=0x20c2550, passphrase_cb=0x403420/0x20c0058 
<0x1927> gpgme_set_passphrase_cb: call: ctx=0x20c2550, passphrase_cb=0x403420/0x20c0058 
<0x1927> gpgme_new: enter: r_ctx=0x7fff5afd0768 
<0x1927> gpgme_new: leave: ctx=0x20c0810 
<0x1927> gpgme_op_keylist_start: enter: ctx=0x20c0810, pattern=0BF38589, secret_only=0 
<0x1927> _gpgme_add_io_cb: call: ctx=0x20c0810, fd 4, dir=1 -> tag=0x20c4fd0 
<0x1927> _gpgme_add_io_cb: call: ctx=0x20c0810, fd 6, dir=1 -> tag=0x20c5120 
<0x1927> gpgme:gpg_io_event: call: gpg=0x20c1d50, event 0x7fd8b1a20ad0, type 0, type_data (nil) 
<0x1927> gpgme_op_keylist_start: leave 
<0x1927> gpgme_op_keylist_next: enter: ctx=0x20c0810 
<0x1927> _gpgme_run_io_cb: call: item=0x20c5140, need to check 
<0x1927> _gpgme_run_io_cb: call: item=0x20c5140, handler (0x20c1d50, 6) 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c0810, key = (nil), line = tru::0:1433443869:2410285847:3:1:5 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c0810, key = (nil), line = pub:u:2048:1:CC73A8A60BF38589:1433443717:::u:::scESC:::::: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c0810, key = 0x20c5170, line = fpr:::::::::20CD3FF80DA6C1E46CD9F135CC73A8A60BF38589: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c0810, key = 0x20c5170, line = uid:u::::1433443717::9963CFDE0C8920AD077B06A281992C4008E67E4F::testkey3 (testkey3) <[email protected]>: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c0810, key = 0x20c5170, line = sub:u:2048:1:22317805D48C1491:1433443717::::::e:::::: 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c0810, key = 0x20c5170, line = fpr:::::::::FB6FFB7D8BEC710A745DE86C22317805D48C1491: 
<0x1927> _gpgme_run_io_cb: call: item=0x20c4ff0, need to check 
<0x1927> _gpgme_run_io_cb: call: item=0x20c4ff0, handler (0x20c1d50, 4) 
<0x1927>  _gpgme_remove_io_cb: call: data=0x20c4fd0, setting fd 0x4 (item=0x20c4ff0) done 
<0x1927> _gpgme_run_io_cb: call: item=0x20c5140, need to check 
<0x1927> _gpgme_run_io_cb: call: item=0x20c5140, handler (0x20c1d50, 6) 
<0x1927> gpgme:keylist_colon_handler: call: ctx=0x20c0810, key = 0x20c5170, line = (null) 
<0x1927> gpgme:gpg_io_event: call: gpg=0x20c1d50, event 0x7fd8b1a20ad0, type 2, type_data 0x20c5170 
<0x1927>  _gpgme_remove_io_cb: call: data=0x20c5120, setting fd 0x6 (item=0x20c5140) done 
<0x1927> gpgme:gpg_io_event: call: gpg=0x20c1d50, event 0x7fd8b1a20ad0, type 1, type_data 0x7fff5afd06c0 
<0x1927> gpgme_op_keylist_next: leave: key=0x20c5170 (20CD3FF80DA6C1E46CD9F135CC73A8A60BF38589) 
<0x1927> gpgme_release: call: ctx=0x20c0810 
<0x1927> gpgme_signers_clear: call: ctx=0x20c2550 
<0x1927> gpgme_signers_add: enter: ctx=0x20c2550, key=0x20c2850 (20CD3FF80DA6C1E46CD9F135CC73A8A60BF38589) 
<0x1927> gpgme_signers_add: leave 
<0x1927> gpgme_op_encrypt_sign: enter: ctx=0x20c2550, flags=0x1, plain=0x20c2ed0, cipher=0x20c3f20 
<0x1927> gpgme_op_encrypt_sign: check: ctx=0x20c2550, recipient[0] = 0x20c5170 (20CD3FF80DA6C1E46CD9F135CC73A8A60BF38589) 
<0x1927> gpgme_sig_notation_get: call: ctx=0x20c2550, ctx->sig_notations=(nil) 
<0x1927> _gpgme_add_io_cb: call: ctx=0x20c2550, fd 4, dir=1 -> tag=0x20c2070 
<0x1927> _gpgme_add_io_cb: call: ctx=0x20c2550, fd 8, dir=1 -> tag=0x20c21c0 
<0x1927> _gpgme_add_io_cb: call: ctx=0x20c2550, fd 11, dir=0 -> tag=0x20c2210 
<0x1927> gpgme:gpg_io_event: call: gpg=0x20c1d50, event 0x7fd8b1a20ad0, type 0, type_data (nil) 
<0x1927> _gpgme_run_io_cb: call: item=0x20c2230, need to check 
<0x1927> _gpgme_run_io_cb: call: item=0x20c2230, handler (0x20c2ed0, 11) 
<0x1927> _gpgme_data_outbound_handler: enter: dh=0x20c2ed0, fd=0xb 
<0x1927> _gpgme_data_outbound_handler: leave 
<0x1927> _gpgme_run_io_cb: call: item=0x20c2230, need to check 
<0x1927> _gpgme_run_io_cb: call: item=0x20c2230, handler (0x20c2ed0, 11) 
<0x1927> _gpgme_data_outbound_handler: enter: dh=0x20c2ed0, fd=0xb 
<0x1927>  _gpgme_remove_io_cb: call: data=0x20c2210, setting fd 0xb (item=0x20c2230) done 
<0x1927> _gpgme_data_outbound_handler: leave 
<0x1927> _gpgme_run_io_cb: call: item=0x20c2090, need to check 
<0x1927> _gpgme_run_io_cb: call: item=0x20c2090, handler (0x20c1d50, 4) 
<0x1927> _gpgme_run_io_cb: call: item=0x20c2090, need to check 
<0x1927> _gpgme_run_io_cb: call: item=0x20c2090, handler (0x20c1d50, 4) 
<0x1927> _gpgme_cancel_with_err: enter: ctx=0x20c2550, ctx_err=117440566, op_err=0 
<0x1927>  _gpgme_remove_io_cb: call: data=0x20c2070, setting fd 0x4 (item=0x20c2090) done 
<0x1927>  _gpgme_remove_io_cb: call: data=0x20c21c0, setting fd 0x8 (item=0x20c21e0) done 
<0x1927>  gpgme:gpg_io_event: call: gpg=0x20c1d50, event 0x7fd8b1a20ad0, type 1, type_data 0x7fff5afd06c0 
<0x1927> _gpgme_cancel_with_err: leave 
<0x1927> gpgme_op_encrypt_sign: error: Unusable secret key <GPGME> 
<0x1927> gpgme_release: call: ctx=0x20c2550

編輯

按照要求通過@kylehuff，這裏是密鑰選擇的代碼：

search_key_result_t gpgme::find_key(const std::string & key_id, const bool priv_key_only, gpgme_key_t *k, std::string *const error) 
    { 
      error -> clear(); 

      *k = NULL; 

      gpgme_ctx_t ctx = NULL; 
      if (!my_gpgme_new(&ctx, false, error)) 
        return SK_ERROR; 

      gpgme_error_t err = gpgme_op_keylist_start(ctx, key_id.c_str(), priv_key_only ? 1 : 0); 
      if (err != GPG_ERR_NO_ERROR) 
      { 
        error -> append(format("Problem searching for %s: %s (%d)", key_id.c_str(), gpg_strerror(err), err)); 
        gpgme_release(ctx); 
        return SK_ERROR; 
      } 

      err = gpgme_op_keylist_next(ctx, k); 
      if (err == GPG_ERR_EOF) 
        return SK_NOT_FOUND; 

      if (err != GPG_ERR_NO_ERROR) 
      { 
        error -> append(format("Problem finding %s: %s (%d)", key_id.c_str(), gpg_strerror(err), err)); 
        gpgme_release(ctx); 
        return SK_ERROR; 
      } 

      gpgme_release(ctx); 

      return SK_FOUND; 
    }

然後在構造函數中我做的：

std::string error; 
    if (find_key(my_key_id, true, &my_key, &error) != SK_FOUND) 
      error_exit(false, "Cannot find key %s: %s", my_key_id.c_str(), error.c_str());

，當它是時候登陸：

  if (find_key(target_uid, false, &recipient[0], error) != SK_FOUND) 
        break; 

      gpgme_signers_clear(ctx); 
      err = gpgme_signers_add(ctx, my_key); 
      if (err != GPG_ERR_NO_ERROR) 
      { 
        error -> append(format("gpgme_signers_add(%s) failed: %s (%d)", my_key_id.c_str(), gpg_strerror(err), err)); 
        break; 
      } 

      int n_signers = gpgme_signers_count(ctx); 
      if (n_signers != 1) 
      { 
        error -> append(format("Number of signers (%d) not expected number (1)", n_signers)); 
        break; 
      } 

      err = gpgme_op_encrypt_sign(ctx, recipient, GPGME_ENCRYPT_ALWAYS_TRUST /* FIXME */, data_in, sig); 
      if (err != GPG_ERR_NO_ERROR) 
      { 
        error -> append(format("gpgme_op_encrypt failed: %s (%d)", gpg_strerror(err), err)); 
        break; 
      }

@kylehuff，這是你的要求是什麼？感謝

編輯

這裏的清單20CD3FF80DA6C1E46CD9F135CC73A8A60BF38589：

tru::0:1433443869:2410285847:3:1:5 
pub:u:2048:1:CC73A8A60BF38589:2015-06-04:::u:testkey3 (testkey3) <[email protected]>::scESC: 
sub:u:2048:1:22317805D48C1491:2015-06-04::::::e:

編輯

folkert @ TRAVELMATE：〜$ gpg2 --local用戶14B7E8E6 --sign BLA .txt

folkert @travelmate：〜$ GPG --verify bla.txt.gpg GPG：簽名使用RSA密鑰ID 74D6F5C6 GPG做出週四2015年6月18日下午7點18分十七秒UTC：好標記從「testkey2（testkey2）」

與編輯鍵，我可以看到74d6f5c6的確是籤子鍵：

子1024R/74D6F5C6創建時間：2015年5月31日到期：從未使用：S

所以我有點驚訝這不適用於gpgme。不做這個查找，但直接gpgme_get_key（）給出了相同的錯誤。

來源

2015-06-12 Folkert van Heusden

你能張貼了'gpgme_signers_add'方法和鍵選擇的實際代碼？在您提供的調試輸出中，它們的關鍵選項與您問題頂部列出的任何鍵不匹配。操作'gpgme_signers_add'使用鍵「20CD3FF80DA6C1E46CD9F135CC73A8A60BF38589」，這是一個關鍵你有公共部分和私人部分，只是沒有列出？ – kylehuff

您能否指定您正在添加哪個鍵？它可能是僅簽名的還是隻加密的？你是選擇私鑰還是其中一個子項？ –

@NickolayOlshevsky我正在使用頂部列出的密鑰：14B7E8E6 –

這很難說是怎麼回事，即使樣本，但這裏有幾個可能的情況 - 在方法my_gpgme_new(&ctx, false, error)正在做

東西可能是任性的。那個函數到底做了什麼？爲什麼不使用標準gpgme_new方法？

在提供的示例中，您使用的功能是search_key_result_t gpgme::find_key();是否需要多個簽名者？如果是這樣，至少爲了測試，爲什麼不簡化它，只使用gpgme_get_key()？即

gpgme_error_t err; 
    gpgme_key_t key; 

    err = gpgme_get_key (ctx, key_string, &key, 1); 
    if (err) { 
    // .. error handling 
    } 
    gpgme_signers_clear(); 
    err = gpgme_signers_add (ctx, key); 
    gpgme_key_unref (key); 

    int n_signers = gpgme_signers_count(ctx); 
    if (n_signers != 1) { 
    // .. error handling 
    } 

    err = gpgme_op_encrypt_sign(ctx, recipient, ....);

此外，用這種方法，它似乎是你將該方法添加到gpgme namesapce。是否有可能在gpgme命名空間中踐踏內置方法？

至於收件人對象，那是如何構造的？它應該是一個以空值終止的gpgme_key_t結構gpgme_key_t s，即使它只是一個接收者。即

gpgme_key_t recipients[2] = { NULL, NULL }; 
    err = gpgme_get_key (ctx, recipient_fpr.c_str(), &recipients[0], 0); 
    if (err) { // .. error handling }

替代地，如果收件人爲陣列提供：

gpgme_key_t recipients = new gpgme_key_t[recip_array.size()]; 
    err = gpgme_get_key (ctx, recipient_fpr.c_str(), &recipients[0], 0); 
    if (err) { // .. error handling } 
    recipients[recip_array.size()] = NULL; // null terminate the array

來源

2015-06-16 20:14:54 kylehuff

my_gpgme_new是一個圍繞gpgme_new的wapper，它調用gpgme_new，但也會調用gpgme_set_pinentry_mode和gpgme_set_passphrase_cb（如果適用）。關於find_key：此方法通過任何gpgme理解的搜索查詢來搜索關鍵字。希望這可以讓人們通過key-id進行搜索，但也可以通過電子郵件地址進行搜索。命名空間：my_gpgme_new和find_key是我的gpgme類的一部分，因此它們不應與gpgme庫（這是普通的c afaik）衝突。 –

對於收件人對象：它確實是2個元素的數組，最後一個元素爲NULL。爲了幫助你們幫助我，我已經將代碼上傳到http://vps001.vanheusden.com/~folkert/gpgme.cpp和http://vps001.vanheusden.com/~folkert/gpgme.h 無論如何，完成的將是開源的。 –

好吧，看到實際應該幫助，如果沒有別的，以防止我猜測。您是否也可以提供'gpg --with-colons --list-keys 20CD3FF80DA6C1E46CD9F135CC73A8A60BF38589'的輸出以確保完整性？ – kylehuff

gpgme：簽署數據時選擇私鑰

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