release/src/router/nettle/rsa-compat.h

   1 /* rsa-compat.h
   2  *
   3  * The RSA publickey algorithm, RSAREF compatible interface.
   4  */
   5
   6 /* nettle, low-level cryptographics library
   7  *
   8  * Copyright (C) 2001 Niels Möller
   9  *
  10  * The nettle library is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU Lesser General Public License as published by
  12  * the Free Software Foundation; either version 2.1 of the License, or (at your
  13  * option) any later version.
  14  *
  15  * The nettle library is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  17  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  18  * License for more details.
  19  *
  20  * You should have received a copy of the GNU Lesser General Public License
  21  * along with the nettle library; see the file COPYING.LIB.  If not, write to
  22  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  23  * MA 02111-1301, USA.
  24  */
  25
  26 #ifndef NETTLE_RSA_COMPAT_H_INCLUDED
  27 #define NETTLE_RSA_COMPAT_H_INCLUDED
  28
  29 #include "rsa.h"
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 /* Name mangling */
  36 #define R_SignInit nettle_R_SignInit
  37 #define R_SignUpdate nettle_R_SignUpdate
  38 #define R_SignFinal nettle_R_SignFinal
  39 #define R_VerifyInit nettle_R_VerifyInit
  40 #define R_VerifyUpdate nettle_R_VerifyUpdate
  41 #define R_VerifyFinal nettle_R_VerifyFinal
  42
  43 /* 256 octets or 2048 bits */
  44 #define MAX_RSA_MODULUS_LEN 256
  45
  46 typedef struct
  47 {
  48   unsigned bits;
  49   uint8_t modulus[MAX_RSA_MODULUS_LEN];
  50   uint8_t exponent[MAX_RSA_MODULUS_LEN];
  51 } R_RSA_PUBLIC_KEY;
  52
  53 typedef struct
  54 {
  55   unsigned bits;
  56   uint8_t modulus[MAX_RSA_MODULUS_LEN];
  57   uint8_t publicExponent[MAX_RSA_MODULUS_LEN];
  58   uint8_t exponent[MAX_RSA_MODULUS_LEN];
  59   uint8_t prime[2][MAX_RSA_MODULUS_LEN];
  60   uint8_t primeExponent[2][MAX_RSA_MODULUS_LEN];
  61   uint8_t coefficient[MAX_RSA_MODULUS_LEN];
  62 } R_RSA_PRIVATE_KEY;
  63
  64 /* Only MD5 is supported for now */
  65 typedef struct
  66 {
  67   struct md5_ctx hash;
  68 } R_SIGNATURE_CTX;
  69
  70 /* Digest algorithms */
  71 /* DA_MD2 not implemented */
  72 enum { DA_MD5 = 1 };
  73
  74 /* Return values */
  75 enum {
  76   RE_SUCCESS = 0,
  77   RE_CONTENT_ENCODING,     /* encryptedContent has RFC 1421 encoding error */
  78   RE_DATA,                 /* other party's private value out of range */
  79   RE_DIGEST_ALGORITHM,     /* message-digest algorithm is invalid */
  80   RE_ENCODING,             /* encoded block has RFC 1421 encoding error */
  81   RE_ENCRYPTION_ALGORITHM, /* encryption algorithm is invalid */
  82   RE_KEY,                  /* recovered data encryption key cannot decrypt */
  83   RE_KEY_ENCODING,         /* encrypted key has RFC 1421 encoding error */
  84   RE_LEN,                  /* signatureLen out of range */
  85   RE_MODULUS_LEN,          /* modulus length invalid */
  86   RE_NEED_RANDOM,          /* random structure is not seeded */
  87   RE_PRIVATE_KEY,          /* private key cannot encrypt message digest, */
  88   RE_PUBLIC_KEY,           /* publicKey cannot decrypt signature */
  89   RE_SIGNATURE,            /* signature is incorrect */
  90   RE_SIGNATURE_ENCODING,   /* encodedSignature has RFC 1421 encoding error */
  91 };
  92
  93 int
  94 R_SignInit(R_SIGNATURE_CTX *ctx,
  95            int digestAlgorithm);
  96
  97 int
  98 R_SignUpdate(R_SIGNATURE_CTX *ctx,
  99              const uint8_t *data,
 100              /* Length is an unsigned char according to rsaref.txt,
 101               * but that must be a typo. */
 102              unsigned length);
 103
 104 int
 105 R_SignFinal(R_SIGNATURE_CTX *ctx,
 106             uint8_t *signature,
 107             unsigned *length,
 108             R_RSA_PRIVATE_KEY *key);
 109
 110 int
 111 R_VerifyInit(R_SIGNATURE_CTX *ctx,
 112              int digestAlgorithm);
 113
 114 int
 115 R_VerifyUpdate(R_SIGNATURE_CTX *ctx,
 116                const uint8_t *data,
 117                /* Length is an unsigned char according to rsaref.txt,
 118                 * but that must be a typo. */
 119                unsigned length);
 120
 121 int
 122 R_VerifyFinal(R_SIGNATURE_CTX *ctx,
 123               uint8_t *signature,
 124               unsigned length,
 125               R_RSA_PUBLIC_KEY *key);
 126
 127 #ifdef __cplusplus
 128 }
 129 #endif
 130
 131 #endif /* NETTLE_RSA_COMPAT_H_INCLUDED */