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diff --git a/scd/iso7816.h b/scd/iso7816.h
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+/* iso7816.h - ISO 7816 commands
+ * Copyright (C) 2003 Free Software Foundation, Inc.
+ *
+ * This file is part of GnuPG.
+ *
+ * GnuPG is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GnuPG is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, see <https://www.gnu.org/licenses/>.
+ */
+
+#ifndef ISO7816_H
+#define ISO7816_H
+
+#if GNUPG_MAJOR_VERSION == 1
+#include "cardglue.h"
+#endif
+
+/* Command codes used by iso7816_check_pinpad. */
+#define ISO7816_VERIFY 0x20
+#define ISO7816_CHANGE_REFERENCE_DATA 0x24
+#define ISO7816_RESET_RETRY_COUNTER 0x2C
+
+/* Error codes returned by iso7816_verify_status. A non-negative
+ * number gives the number of left tries.
+ * NB: The values are also used by the CHV-STATUS lines and thus are
+ * part of the public interface. Do not change them. */
+#define ISO7816_VERIFY_ERROR (-1)
+#define ISO7816_VERIFY_NO_PIN (-2)
+#define ISO7816_VERIFY_BLOCKED (-3)
+#define ISO7816_VERIFY_NULLPIN (-4)
+#define ISO7816_VERIFY_NOT_NEEDED (-5)
+
+/* Information to be passed to pinpad equipped readers. See
+ ccid-driver.c for details. */
+struct pininfo_s
+{
+ int fixedlen; /*
+ * -1: Variable length input is not supported,
+ * no information of fixed length yet.
+ * 0: Use variable length input.
+ * >0: Fixed length of PIN.
+ */
+ int minlen;
+ int maxlen;
+};
+typedef struct pininfo_s pininfo_t;
+
+
+gpg_error_t iso7816_map_sw (int sw);
+
+gpg_error_t iso7816_select_application (int slot,
+ const char *aid, size_t aidlen,
+ unsigned int flags);
+gpg_error_t iso7816_select_application_ext (int slot,
+ const char *aid, size_t aidlen,
+ unsigned int flags,
+ unsigned char **result,
+ size_t *resultlen);
+gpg_error_t iso7816_select_mf (int slot);
+gpg_error_t iso7816_select_file (int slot, int tag, int is_dir);
+gpg_error_t iso7816_select_path (int slot,
+ const unsigned short *path, size_t pathlen,
+ unsigned short top_df);
+gpg_error_t iso7816_list_directory (int slot, int list_dirs,
+ unsigned char **result, size_t *resultlen);
+gpg_error_t iso7816_apdu_direct (int slot,
+ const void *apdudata, size_t apdudatalen,
+ int handle_more, unsigned int *r_sw,
+ unsigned char **result, size_t *resultlen);
+gpg_error_t iso7816_check_pinpad (int slot, int command,
+ pininfo_t *pininfo);
+gpg_error_t iso7816_verify (int slot,
+ int chvno, const char *chv, size_t chvlen);
+gpg_error_t iso7816_verify_kp (int slot, int chvno, pininfo_t *pininfo);
+int iso7816_verify_status (int slot, int chvno);
+gpg_error_t iso7816_change_reference_data (int slot, int chvno,
+ const char *oldchv, size_t oldchvlen,
+ const char *newchv, size_t newchvlen);
+gpg_error_t iso7816_change_reference_data_kp (int slot, int chvno,
+ int is_exchange,
+ pininfo_t *pininfo);
+gpg_error_t iso7816_reset_retry_counter (int slot, int chvno,
+ const char *newchv, size_t newchvlen);
+gpg_error_t iso7816_reset_retry_counter_with_rc (int slot, int chvno,
+ const char *data,
+ size_t datalen);
+gpg_error_t iso7816_get_data (int slot, int extended_mode, int tag,
+ unsigned char **result, size_t *resultlen);
+gpg_error_t iso7816_put_data (int slot, int extended_mode, int tag,
+ const void *data, size_t datalen);
+gpg_error_t iso7816_put_data_odd (int slot, int extended_mode, int tag,
+ const void *data, size_t datalen);
+gpg_error_t iso7816_manage_security_env (int slot, int p1, int p2,
+ const unsigned char *data,
+ size_t datalen);
+gpg_error_t iso7816_compute_ds (int slot, int extended_mode,
+ const unsigned char *data, size_t datalen,
+ int le,
+ unsigned char **result, size_t *resultlen);
+gpg_error_t iso7816_decipher (int slot, int extended_mode,
+ const unsigned char *data, size_t datalen,
+ int le, int padind,
+ unsigned char **result, size_t *resultlen);
+gpg_error_t iso7816_pso_csv (int slot, int extended_mode,
+ const unsigned char *data, size_t datalen, int le,
+ unsigned char **result, size_t *resultlen);
+gpg_error_t iso7816_internal_authenticate (int slot, int extended_mode,
+ const unsigned char *data, size_t datalen,
+ int le,
+ unsigned char **result, size_t *resultlen);
+gpg_error_t iso7816_general_authenticate (int slot, int extended_mode,
+ int algoref, int keyref,
+ const unsigned char *data,
+ size_t datalen,
+ int le,
+ unsigned char **result,
+ size_t *resultlen);
+gpg_error_t iso7816_generate_keypair (int slot, int extended_mode,
+ int p1, int p2,
+ const char *data, size_t datalen,
+ int le,
+ unsigned char **result,
+ size_t *resultlen);
+gpg_error_t iso7816_read_public_key (int slot, int extended_mode,
+ const char *data, size_t datalen,
+ int le,
+ unsigned char **result, size_t *resultlen);
+gpg_error_t iso7816_get_challenge (int slot,
+ int length, unsigned char *buffer);
+
+gpg_error_t iso7816_read_binary_ext (int slot, int extended_mode,
+ size_t offset, size_t nmax,
+ unsigned char **result, size_t *resultlen,
+ int *r_sw);
+gpg_error_t iso7816_read_binary (int slot, size_t offset, size_t nmax,
+ unsigned char **result, size_t *resultlen);
+gpg_error_t iso7816_read_record_ext (int slot, int recno, int reccount,
+ int short_ef,
+ unsigned char **result, size_t *resultlen,
+ int *r_sw);
+gpg_error_t iso7816_read_record (int slot, int recno, int reccount,
+ int short_ef,
+ unsigned char **result, size_t *resultlen);
+
+#endif /*ISO7816_H*/