34 #if defined(POLARSSL_PKCS12_C)
40 #if defined(POLARSSL_ARC4_C)
44 #if defined(POLARSSL_DES_C)
48 static int pkcs12_parse_pbe_params(
unsigned char **p,
49 const unsigned char *end,
87 const unsigned char *pwd,
size_t pwdlen,
88 unsigned char *key,
size_t keylen,
89 unsigned char *iv,
size_t ivlen )
94 unsigned char *p, *end;
95 unsigned char unipwd[258];
98 memset(&unipwd, 0,
sizeof(unipwd));
101 end = p + pbe_params->
len;
103 if( ( ret = pkcs12_parse_pbe_params( &p, end, &salt, &iterations ) ) != 0 )
106 for(i = 0; i < pwdlen; i++)
107 unipwd[i * 2 + 1] = pwd[i];
110 salt.
p, salt.
len, md_type,
116 if( iv == NULL || ivlen == 0 )
120 salt.
p, salt.
len, md_type,
129 const unsigned char *pwd,
size_t pwdlen,
130 const unsigned char *data,
size_t len,
131 unsigned char *output )
133 #if !defined(POLARSSL_ARC4_C)
144 unsigned char key[16];
150 key, 16, NULL, 0 ) ) != 0 )
156 if( ( ret =
arc4_crypt( &ctx, len, data, output ) ) != 0 )
165 const unsigned char *pwd,
size_t pwdlen,
166 const unsigned char *data,
size_t len,
167 unsigned char *output )
170 unsigned char key[32];
171 unsigned char iv[16];
177 if( cipher_info == NULL )
182 if( ( ret = pkcs12_pbe_derive_key_iv( pbe_params, md_type, pwd, pwdlen,
184 iv, cipher_info->
iv_size ) ) != 0 )
192 if( ( ret =
cipher_setkey( &cipher_ctx, key, keylen, mode ) ) != 0 )
199 output, &olen ) ) != 0 )
204 if( ( ret =
cipher_finish( &cipher_ctx, output + olen, &olen ) ) != 0 )
210 static void pkcs12_fill_buffer(
unsigned char *data,
size_t data_len,
211 const unsigned char *filler,
size_t fill_len )
213 unsigned char *p = data;
216 while( data_len > 0 )
218 use_len = ( data_len > fill_len ) ? fill_len : data_len;
219 memcpy( p, filler, use_len );
226 const unsigned char *pwd,
size_t pwdlen,
227 const unsigned char *salt,
size_t saltlen,
228 md_type_t md_type,
int id,
int iterations )
233 unsigned char diversifier[128];
234 unsigned char salt_block[128], pwd_block[128], hash_block[128];
239 size_t hlen, use_len, v;
245 if( datalen > 128 || pwdlen > 64 || saltlen > 64 )
249 if( md_info == NULL )
252 if ( ( ret =
md_init_ctx( &md_ctx, md_info ) ) != 0 )
261 memset( diversifier, (
unsigned char)
id, v );
263 pkcs12_fill_buffer( salt_block, v, salt, saltlen );
264 pkcs12_fill_buffer( pwd_block, v, pwd, pwdlen );
270 if( ( ret =
md_starts( &md_ctx ) ) != 0 )
273 if( ( ret =
md_update( &md_ctx, diversifier, v ) ) != 0 )
276 if( ( ret =
md_update( &md_ctx, salt_block, v ) ) != 0 )
279 if( ( ret =
md_update( &md_ctx, pwd_block, v ) ) != 0 )
282 if( ( ret =
md_finish( &md_ctx, hash_output ) ) != 0 )
286 for( i = 1; i < iterations; i++ )
288 if( ( ret =
md( md_info, hash_output, hlen, hash_output ) ) != 0 )
292 use_len = ( datalen > hlen ) ? hlen : datalen;
293 memcpy( p, hash_output, use_len );
301 pkcs12_fill_buffer( hash_block, v, hash_output, hlen );
304 for( i = v; i > 0; i-- )
305 if( ++hash_block[i - 1] != 0 )
310 for( i = v; i > 0; i-- )
312 j = salt_block[i - 1] + hash_block[i - 1] + c;
313 c = (
unsigned char) (j >> 8);
314 salt_block[i - 1] = j & 0xFF;
319 for( i = v; i > 0; i-- )
321 j = pwd_block[i - 1] + hash_block[i - 1] + c;
322 c = (
unsigned char) (j >> 8);
323 pwd_block[i - 1] = j & 0xFF;