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annotate libtomcrypt/src/pk/rsa/rsa_set.c @ 1659:d32bcb5c557d

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Add Ed25519 support (#91) * Add support for Ed25519 as a public key type Ed25519 is a elliptic curve signature scheme that offers better security than ECDSA and DSA and good performance. It may be used for both user and host keys. OpenSSH key import and fuzzer are not supported yet. Initially inspired by Peter Szabo. * Add curve25519 and ed25519 fuzzers * Add import and export of Ed25519 keys
author Vladislav Grishenko <themiron@users.noreply.github.com>
date Wed, 11 Mar 2020 21:09:45 +0500
parents 6dba84798cd5
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
1471
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 */
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9 #include "tomcrypt.h"
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10
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11
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12 #ifdef LTC_MRSA
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13
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14 /**
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15 Import RSA key from raw numbers
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16
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17 @param N RSA's N
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18 @param Nlen RSA's N's length
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19 @param e RSA's e
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20 @param elen RSA's e's length
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21 @param d RSA's d (only private key, NULL for public key)
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22 @param dlen RSA's d's length
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23 @param key [out] the destination for the imported key
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24 @return CRYPT_OK if successful
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25 */
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26 int rsa_set_key(const unsigned char *N, unsigned long Nlen,
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27 const unsigned char *e, unsigned long elen,
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28 const unsigned char *d, unsigned long dlen,
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29 rsa_key *key)
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30 {
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31 int err;
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32
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33 LTC_ARGCHK(key != NULL);
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34 LTC_ARGCHK(N != NULL);
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35 LTC_ARGCHK(e != NULL);
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36 LTC_ARGCHK(ltc_mp.name != NULL);
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37
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38 err = mp_init_multi(&key->e, &key->d, &key->N, &key->dQ, &key->dP, &key->qP, &key->p, &key->q, NULL);
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39 if (err != CRYPT_OK) return err;
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40
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41 if ((err = mp_read_unsigned_bin(key->N , (unsigned char *)N , Nlen)) != CRYPT_OK) { goto LBL_ERR; }
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42 if ((err = mp_read_unsigned_bin(key->e , (unsigned char *)e , elen)) != CRYPT_OK) { goto LBL_ERR; }
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43 if (d && dlen) {
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44 if ((err = mp_read_unsigned_bin(key->d , (unsigned char *)d , dlen)) != CRYPT_OK) { goto LBL_ERR; }
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45 key->type = PK_PRIVATE;
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46 }
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47 else {
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48 key->type = PK_PUBLIC;
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49 }
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50 return CRYPT_OK;
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51
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52 LBL_ERR:
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53 rsa_free(key);
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54 return err;
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55 }
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56
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57 /**
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58 Import factors of an RSA key from raw numbers
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59
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60 Only for private keys.
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61
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62 @param p RSA's p
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63 @param plen RSA's p's length
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64 @param q RSA's q
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65 @param qlen RSA's q's length
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66 @param key [out] the destination for the imported key
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67 @return CRYPT_OK if successful
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68 */
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69 int rsa_set_factors(const unsigned char *p, unsigned long plen,
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70 const unsigned char *q, unsigned long qlen,
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71 rsa_key *key)
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72 {
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73 int err;
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74
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75 LTC_ARGCHK(key != NULL);
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76 LTC_ARGCHK(p != NULL);
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77 LTC_ARGCHK(q != NULL);
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78 LTC_ARGCHK(ltc_mp.name != NULL);
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79
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80 if (key->type != PK_PRIVATE) return CRYPT_PK_TYPE_MISMATCH;
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81
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82 if ((err = mp_read_unsigned_bin(key->p , (unsigned char *)p , plen)) != CRYPT_OK) { goto LBL_ERR; }
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83 if ((err = mp_read_unsigned_bin(key->q , (unsigned char *)q , qlen)) != CRYPT_OK) { goto LBL_ERR; }
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84 return CRYPT_OK;
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85
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86 LBL_ERR:
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87 rsa_free(key);
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88 return err;
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89 }
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90
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91 /**
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92 Import CRT parameters of an RSA key from raw numbers
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93
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94 Only for private keys.
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95
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96 @param dP RSA's dP
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97 @param dPlen RSA's dP's length
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98 @param dQ RSA's dQ
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99 @param dQlen RSA's dQ's length
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100 @param qP RSA's qP
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101 @param qPlen RSA's qP's length
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102 @param key [out] the destination for the imported key
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103 @return CRYPT_OK if successful
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104 */
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105 int rsa_set_crt_params(const unsigned char *dP, unsigned long dPlen,
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106 const unsigned char *dQ, unsigned long dQlen,
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107 const unsigned char *qP, unsigned long qPlen,
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108 rsa_key *key)
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109 {
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110 int err;
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111
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112 LTC_ARGCHK(key != NULL);
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113 LTC_ARGCHK(dP != NULL);
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114 LTC_ARGCHK(dQ != NULL);
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115 LTC_ARGCHK(qP != NULL);
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116 LTC_ARGCHK(ltc_mp.name != NULL);
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117
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118 if (key->type != PK_PRIVATE) return CRYPT_PK_TYPE_MISMATCH;
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119
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120 if ((err = mp_read_unsigned_bin(key->dP, (unsigned char *)dP, dPlen)) != CRYPT_OK) { goto LBL_ERR; }
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121 if ((err = mp_read_unsigned_bin(key->dQ, (unsigned char *)dQ, dQlen)) != CRYPT_OK) { goto LBL_ERR; }
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122 if ((err = mp_read_unsigned_bin(key->qP, (unsigned char *)qP, qPlen)) != CRYPT_OK) { goto LBL_ERR; }
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123 return CRYPT_OK;
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124
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125 LBL_ERR:
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126 rsa_free(key);
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127 return err;
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128 }
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129
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130 #endif /* LTC_MRSA */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
131
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
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132 /* ref: $Format:%D$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
133 /* git commit: $Format:%H$ */
6dba84798cd5 Update to libtomcrypt 1.18.1, merged with Dropbear changes
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
134 /* commit time: $Format:%ai$ */