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#ifndef MUPDF_PDF_CRYPT_H

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#define MUPDF_PDF_CRYPT_H

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/*

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 * Encryption

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 */

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pdf_crypt *pdf_new_crypt(fz_context *ctx, pdf_obj *enc, pdf_obj *id);

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void pdf_drop_crypt(fz_context *ctx, pdf_crypt *crypt);

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void pdf_crypt_obj(fz_context *ctx, pdf_crypt *crypt, pdf_obj *obj, int num, int gen);

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void pdf_crypt_buffer(fz_context *ctx, pdf_crypt *crypt, fz_buffer *buf, int num, int gen);

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fz_stream *pdf_open_crypt(fz_context *ctx, fz_stream *chain, pdf_crypt *crypt, int num, int gen);

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fz_stream *pdf_open_crypt_with_filter(fz_context *ctx, fz_stream *chain, pdf_crypt *crypt, pdf_obj *name, int num, int gen);

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int pdf_crypt_version(fz_context *ctx, pdf_document *doc);

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int pdf_crypt_revision(fz_context *ctx, pdf_document *doc);

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char *pdf_crypt_method(fz_context *ctx, pdf_document *doc);

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int pdf_crypt_length(fz_context *ctx, pdf_document *doc);

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unsigned char *pdf_crypt_key(fz_context *ctx, pdf_document *doc);

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#ifndef NDEBUG

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void pdf_print_crypt(fz_context *ctx, pdf_crypt *crypt);

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#endif

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typedef struct pdf_designated_name_s

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{

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	char *cn;

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	char *o;

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	char *ou;

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	char *email;

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	char *c;

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}

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pdf_designated_name;

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void pdf_drop_designated_name(fz_context *ctx, pdf_designated_name *dn);

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pdf_signer *pdf_read_pfx(fz_context *ctx, const char *sigfile, const char *password);

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pdf_signer *pdf_keep_signer(fz_context *ctx, pdf_signer *signer);

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void pdf_drop_signer(fz_context *ctx, pdf_signer *signer);

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pdf_designated_name *pdf_signer_designated_name(fz_context *ctx, pdf_signer *signer);

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void pdf_write_digest(fz_context *ctx, pdf_document *doc, char *filename, pdf_obj *byte_range, int digest_offset, int digest_length, pdf_signer *signer);

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/*

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	pdf_signature_widget_byte_range: retrieve the byte range for a signature widget

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*/

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int pdf_signature_widget_byte_range(fz_context *ctx, pdf_document *doc, pdf_widget *widget, int (*byte_range)[2]);

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/*

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	pdf_signature_widget_contents: retrieve the contents for a signature widget

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*/

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int pdf_signature_widget_contents(fz_context *ctx, pdf_document *doc, pdf_widget *widget, char **contents);

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/*

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	pdf_check_signature: check a signature's certificate chain and digest

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*/

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int pdf_check_signature(fz_context *ctx, pdf_document *doc, pdf_widget *widget, char *file, char *ebuf, int ebufsize);

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/*

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	pdf_sign_signature: sign a signature form field

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*/

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void pdf_sign_signature(fz_context *ctx, pdf_document *doc, pdf_widget *widget, const char *sigfile, const char *password);

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#endif

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