src/src/pdkim/signing.h

   1 /*
   2  *  PDKIM - a RFC4871 (DKIM) implementation
   3  *
   4  *  Copyright (C) 2017  Exim maintainers
   5  *
   6  *  RSA signing/verification interface
   7  */
   8
   9 #include "../exim.h"
  10
  11 #ifndef DISABLE_DKIM    /* entire file */
  12
  13 #include "crypt_ver.h"
  14
  15 #ifdef SIGN_OPENSSL
  16 # include <openssl/rsa.h>
  17 # include <openssl/ssl.h>
  18 # include <openssl/err.h>
  19 #elif defined(SIGN_GNUTLS)
  20 # include <gnutls/gnutls.h>
  21 # include <gnutls/x509.h>
  22 #  include <gnutls/abstract.h>
  23 #elif defined(SIGN_GCRYPT)
  24 #  include <gcrypt.h>
  25 #  include <libtasn1.h>
  26 #endif
  27
  28 #include "../blob.h"
  29
  30
  31 #ifdef SIGN_OPENSSL
  32
  33 typedef struct {
  34   EVP_PKEY * key;
  35 } es_ctx;
  36
  37 typedef struct {
  38   EVP_PKEY * key;
  39 } ev_ctx;
  40
  41 #elif defined(SIGN_GNUTLS)
  42
  43 typedef struct {
  44   gnutls_x509_privkey_t key;
  45 } es_ctx;
  46
  47 typedef struct {
  48   gnutls_pubkey_t key;
  49 } ev_ctx;
  50
  51 #elif defined(SIGN_GCRYPT)
  52
  53 typedef struct {
  54   int   keytype;
  55   gcry_mpi_t n;
  56   gcry_mpi_t e;
  57   gcry_mpi_t d;
  58   gcry_mpi_t p;
  59   gcry_mpi_t q;
  60   gcry_mpi_t dp;
  61   gcry_mpi_t dq;
  62   gcry_mpi_t qp;
  63 } es_ctx;
  64
  65 typedef struct {
  66   int   keytype;
  67   gcry_mpi_t n;
  68   gcry_mpi_t e;
  69 } ev_ctx;
  70
  71 #endif
  72
  73
  74 extern void exim_dkim_init(void);
  75 extern gstring * exim_dkim_data_append(gstring *, uschar *);
  76
  77 extern const uschar * exim_dkim_signing_init(uschar *, es_ctx *);
  78 extern const uschar * exim_dkim_sign(es_ctx *, hashmethod, blob *, blob *);
  79 extern const uschar * exim_dkim_verify_init(blob *, ev_ctx *);
  80 extern const uschar * exim_dkim_verify(ev_ctx *, hashmethod, blob *, blob *);
  81
  82 #endif  /*DISABLE_DKIM*/
  83 /* End of File */