Mercurial > dropbear

annotate src/prngs/yarrow.c @ 390:d8e44bef7917 libtomcrypt-dropbear

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Replace // with /* */
author Matt Johnston <matt@ucc.asn.au>
date Thu, 11 Jan 2007 04:28:09 +0000
parents d5faf4814ddb
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
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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 * Tom St Denis, [email protected], http://libtomcrypt.com
280
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10 */
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11 #include "tomcrypt.h"
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12
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13 /**
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14 @file yarrow.c
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15 Yarrow PRNG, Tom St Denis
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16 */
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17
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18 #ifdef YARROW
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19
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20 const struct ltc_prng_descriptor yarrow_desc =
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21 {
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22 "yarrow", 64,
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23 &yarrow_start,
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24 &yarrow_add_entropy,
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25 &yarrow_ready,
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26 &yarrow_read,
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27 &yarrow_done,
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28 &yarrow_export,
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29 &yarrow_import,
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30 &yarrow_test
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31 };
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32
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33 /**
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34 Start the PRNG
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35 @param prng [out] The PRNG state to initialize
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36 @return CRYPT_OK if successful
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37 */
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38 int yarrow_start(prng_state *prng)
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39 {
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40 int err;
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41
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42 LTC_ARGCHK(prng != NULL);
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43
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44 /* these are the default hash/cipher combo used */
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45 #ifdef RIJNDAEL
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46 #if YARROW_AES==0
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47 prng->yarrow.cipher = register_cipher(&rijndael_enc_desc);
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48 #elif YARROW_AES==1
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49 prng->yarrow.cipher = register_cipher(&aes_enc_desc);
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50 #elif YARROW_AES==2
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51 prng->yarrow.cipher = register_cipher(&rijndael_desc);
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52 #elif YARROW_AES==3
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53 prng->yarrow.cipher = register_cipher(&aes_desc);
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54 #endif
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55 #elif defined(BLOWFISH)
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56 prng->yarrow.cipher = register_cipher(&blowfish_desc);
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57 #elif defined(TWOFISH)
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58 prng->yarrow.cipher = register_cipher(&twofish_desc);
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59 #elif defined(RC6)
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60 prng->yarrow.cipher = register_cipher(&rc6_desc);
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61 #elif defined(RC5)
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62 prng->yarrow.cipher = register_cipher(&rc5_desc);
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63 #elif defined(SAFERP)
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64 prng->yarrow.cipher = register_cipher(&saferp_desc);
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65 #elif defined(RC2)
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66 prng->yarrow.cipher = register_cipher(&rc2_desc);
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67 #elif defined(NOEKEON)
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68 prng->yarrow.cipher = register_cipher(&noekeon_desc);
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69 #elif defined(ANUBIS)
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70 prng->yarrow.cipher = register_cipher(&anubis_desc);
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71 #elif defined(KSEED)
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72 prng->yarrow.cipher = register_cipher(&kseed_desc);
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73 #elif defined(KHAZAD)
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74 prng->yarrow.cipher = register_cipher(&khazad_desc);
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75 #elif defined(CAST5)
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76 prng->yarrow.cipher = register_cipher(&cast5_desc);
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77 #elif defined(XTEA)
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78 prng->yarrow.cipher = register_cipher(&xtea_desc);
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79 #elif defined(SAFER)
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80 prng->yarrow.cipher = register_cipher(&safer_sk128_desc);
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81 #elif defined(DES)
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82 prng->yarrow.cipher = register_cipher(&des3_desc);
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83 #else
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84 #error YARROW needs at least one CIPHER
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85 #endif
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86 if ((err = cipher_is_valid(prng->yarrow.cipher)) != CRYPT_OK) {
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87 return err;
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88 }
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89
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90 #ifdef SHA256
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91 prng->yarrow.hash = register_hash(&sha256_desc);
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92 #elif defined(SHA512)
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93 prng->yarrow.hash = register_hash(&sha512_desc);
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94 #elif defined(TIGER)
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95 prng->yarrow.hash = register_hash(&tiger_desc);
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96 #elif defined(SHA1)
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97 prng->yarrow.hash = register_hash(&sha1_desc);
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98 #elif defined(RIPEMD320)
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99 prng->yarrow.hash = register_hash(&rmd320_desc);
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100 #elif defined(RIPEMD256)
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101 prng->yarrow.hash = register_hash(&rmd256_desc);
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102 #elif defined(RIPEMD160)
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103 prng->yarrow.hash = register_hash(&rmd160_desc);
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104 #elif defined(RIPEMD128)
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105 prng->yarrow.hash = register_hash(&rmd128_desc);
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106 #elif defined(MD5)
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107 prng->yarrow.hash = register_hash(&md5_desc);
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108 #elif defined(MD4)
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109 prng->yarrow.hash = register_hash(&md4_desc);
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110 #elif defined(MD2)
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111 prng->yarrow.hash = register_hash(&md2_desc);
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112 #elif defined(WHIRLPOOL)
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113 prng->yarrow.hash = register_hash(&whirlpool_desc);
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114 #else
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115 #error YARROW needs at least one HASH
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116 #endif
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117 if ((err = hash_is_valid(prng->yarrow.hash)) != CRYPT_OK) {
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118 return err;
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119 }
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120
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121 /* zero the memory used */
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122 zeromem(prng->yarrow.pool, sizeof(prng->yarrow.pool));
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123 LTC_MUTEX_INIT(&prng->yarrow.prng_lock)
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124
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125 return CRYPT_OK;
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126 }
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127
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128 /**
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129 Add entropy to the PRNG state
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130 @param in The data to add
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131 @param inlen Length of the data to add
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132 @param prng PRNG state to update
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133 @return CRYPT_OK if successful
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134 */
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135 int yarrow_add_entropy(const unsigned char *in, unsigned long inlen, prng_state *prng)
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136 {
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137 hash_state md;
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138 int err;
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parents:
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139
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
140 LTC_ARGCHK(in != NULL);
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
141 LTC_ARGCHK(prng != NULL);
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
142
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
143 LTC_MUTEX_LOCK(&prng->yarrow.prng_lock);
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
144
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
145 if ((err = hash_is_valid(prng->yarrow.hash)) != CRYPT_OK) {
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
146 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
147 return err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
148 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
149
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
150 /* start the hash */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
151 if ((err = hash_descriptor[prng->yarrow.hash].init(&md)) != CRYPT_OK) {
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
152 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
153 return err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
154 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
155
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
156 /* hash the current pool */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
157 if ((err = hash_descriptor[prng->yarrow.hash].process(&md, prng->yarrow.pool,
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
158 hash_descriptor[prng->yarrow.hash].hashsize)) != CRYPT_OK) {
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
159 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
160 return err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
161 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
162
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
163 /* add the new entropy */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
164 if ((err = hash_descriptor[prng->yarrow.hash].process(&md, in, inlen)) != CRYPT_OK) {
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
165 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
166 return err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
167 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
168
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
169 /* store result */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
170 if ((err = hash_descriptor[prng->yarrow.hash].done(&md, prng->yarrow.pool)) != CRYPT_OK) {
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
171 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
172 return err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
173 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
174
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
175 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
176 return CRYPT_OK;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
177 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
178
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
179 /**
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
180 Make the PRNG ready to read from
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
181 @param prng The PRNG to make active
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
182 @return CRYPT_OK if successful
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
183 */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
184 int yarrow_ready(prng_state *prng)
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
185 {
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
186 int ks, err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
187
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
188 LTC_ARGCHK(prng != NULL);
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
189 LTC_MUTEX_LOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
190
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
191 if ((err = hash_is_valid(prng->yarrow.hash)) != CRYPT_OK) {
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
192 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
193 return err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
194 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
195
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
196 if ((err = cipher_is_valid(prng->yarrow.cipher)) != CRYPT_OK) {
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
197 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
198 return err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
199 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
200
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
201 /* setup CTR mode using the "pool" as the key */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
202 ks = (int)hash_descriptor[prng->yarrow.hash].hashsize;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
203 if ((err = cipher_descriptor[prng->yarrow.cipher].keysize(&ks)) != CRYPT_OK) {
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
204 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
205 return err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
206 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
207
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
208 if ((err = ctr_start(prng->yarrow.cipher, /* what cipher to use */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
209 prng->yarrow.pool, /* IV */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
210 prng->yarrow.pool, ks, /* KEY and key size */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
211 0, /* number of rounds */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
212 CTR_COUNTER_LITTLE_ENDIAN, /* little endian counter */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
213 &prng->yarrow.ctr)) != CRYPT_OK) {
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
214 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
215 return err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
216 }
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
217 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
218 return CRYPT_OK;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
219 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
220
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
221 /**
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
222 Read from the PRNG
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
223 @param out Destination
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
224 @param outlen Length of output
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
225 @param prng The active PRNG to read from
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
226 @return Number of octets read
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
227 */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
228 unsigned long yarrow_read(unsigned char *out, unsigned long outlen, prng_state *prng)
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
229 {
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
230 LTC_ARGCHK(out != NULL);
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
231 LTC_ARGCHK(prng != NULL);
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
232
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
233 LTC_MUTEX_LOCK(&prng->yarrow.prng_lock);
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
234
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
235 /* put out in predictable state first */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
236 zeromem(out, outlen);
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
237
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
238 /* now randomize it */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
239 if (ctr_encrypt(out, out, outlen, &prng->yarrow.ctr) != CRYPT_OK) {
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
240 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
241 return 0;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
242 }
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
243 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
244 return outlen;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
245 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
246
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
247 /**
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
248 Terminate the PRNG
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
249 @param prng The PRNG to terminate
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
250 @return CRYPT_OK if successful
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
251 */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
252 int yarrow_done(prng_state *prng)
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
253 {
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
254 int err;
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
255 LTC_ARGCHK(prng != NULL);
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
256
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
257 LTC_MUTEX_LOCK(&prng->yarrow.prng_lock);
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
258
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
259 /* call cipher done when we invent one ;-) */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
260
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
261 /* we invented one */
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
262 err = ctr_done(&prng->yarrow.ctr);
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
263
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
264 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
265 return err;
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
266 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
267
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
268 /**
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
269 Export the PRNG state
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
270 @param out [out] Destination
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
271 @param outlen [in/out] Max size and resulting size of the state
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
272 @param prng The PRNG to export
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
273 @return CRYPT_OK if successful
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
274 */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
275 int yarrow_export(unsigned char *out, unsigned long *outlen, prng_state *prng)
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
276 {
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
277 LTC_ARGCHK(out != NULL);
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
278 LTC_ARGCHK(outlen != NULL);
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
279 LTC_ARGCHK(prng != NULL);
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
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280
380
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diff changeset
281 LTC_MUTEX_LOCK(&prng->yarrow.prng_lock);
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282
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
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283 /* we'll write 64 bytes for s&g's */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
284 if (*outlen < 64) {
380
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285 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
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diff changeset
286 *outlen = 64;
280
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Matt Johnston <matt@ucc.asn.au>
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287 return CRYPT_BUFFER_OVERFLOW;
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Matt Johnston <matt@ucc.asn.au>
parents:
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288 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
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289
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
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290 if (yarrow_read(out, 64, prng) != 64) {
380
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291 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
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Matt Johnston <matt@ucc.asn.au>
parents:
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292 return CRYPT_ERROR_READPRNG;
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Matt Johnston <matt@ucc.asn.au>
parents:
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293 }
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Matt Johnston <matt@ucc.asn.au>
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294 *outlen = 64;
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295
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Matt Johnston <matt@ucc.asn.au>
parents:
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296 return CRYPT_OK;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
297 }
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Matt Johnston <matt@ucc.asn.au>
parents:
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298
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
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299 /**
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
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300 Import a PRNG state
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Matt Johnston <matt@ucc.asn.au>
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301 @param in The PRNG state
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Matt Johnston <matt@ucc.asn.au>
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302 @param inlen Size of the state
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Matt Johnston <matt@ucc.asn.au>
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303 @param prng The PRNG to import
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Matt Johnston <matt@ucc.asn.au>
parents:
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304 @return CRYPT_OK if successful
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Matt Johnston <matt@ucc.asn.au>
parents:
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305 */
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Matt Johnston <matt@ucc.asn.au>
parents:
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306 int yarrow_import(const unsigned char *in, unsigned long inlen, prng_state *prng)
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Matt Johnston <matt@ucc.asn.au>
parents:
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307 {
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
308 int err;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
309
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Matt Johnston <matt@ucc.asn.au>
parents:
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310 LTC_ARGCHK(in != NULL);
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
311 LTC_ARGCHK(prng != NULL);
380
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diff changeset
312
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313 LTC_MUTEX_LOCK(&prng->yarrow.prng_lock);
280
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Matt Johnston <matt@ucc.asn.au>
parents:
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314
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Matt Johnston <matt@ucc.asn.au>
parents:
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315 if (inlen != 64) {
380
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diff changeset
316 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
317 return CRYPT_INVALID_ARG;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
318 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
319
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
320 if ((err = yarrow_start(prng)) != CRYPT_OK) {
380
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parents: 280
diff changeset
321 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
280
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
322 return err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
323 }
380
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diff changeset
324 err = yarrow_add_entropy(in, 64, prng);
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diff changeset
325 LTC_MUTEX_UNLOCK(&prng->yarrow.prng_lock);
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parents: 280
diff changeset
326 return err;
280
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
327 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
328
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
329 /**
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
330 PRNG self-test
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
331 @return CRYPT_OK if successful, CRYPT_NOP if self-testing has been disabled
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
332 */
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
333 int yarrow_test(void)
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
334 {
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
335 #ifndef LTC_TEST
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
336 return CRYPT_NOP;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
337 #else
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
338 int err;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
339 prng_state prng;
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Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
340
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
341 if ((err = yarrow_start(&prng)) != CRYPT_OK) {
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
342 return err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
343 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
344
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
345 /* now let's test the hash/cipher that was chosen */
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
346 if ((err = cipher_descriptor[prng.yarrow.cipher].test()) != CRYPT_OK) {
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
347 return err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
348 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
349 if ((err = hash_descriptor[prng.yarrow.hash].test()) != CRYPT_OK) {
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
350 return err;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
351 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
352
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
353 return CRYPT_OK;
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
354 #endif
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
355 }
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
356
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
357 #endif
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
358
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
359
59400faa4b44 Re-import libtomcrypt 1.05 for cleaner propagating.
Matt Johnston <matt@ucc.asn.au>
parents:
diff changeset
360 /* $Source: /cvs/libtom/libtomcrypt/src/prngs/yarrow.c,v $ */
380
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
361 /* $Revision: 1.10 $ */
d5faf4814ddb Update to LibTomCrypt 1.16
Matt Johnston <matt@ucc.asn.au>
parents: 280
diff changeset
362 /* $Date: 2006/11/14 04:21:17 $ */