38 #if defined(POLARSSL_PKCS5_C)
45 static int pkcs5_parse_pbkdf2_params(
asn1_buf *params,
51 unsigned char **p = ¶ms->
p;
52 const unsigned char *end = params->
p + params->
len;
103 const unsigned char *pwd,
size_t pwdlen,
104 const unsigned char *data,
size_t datalen,
105 unsigned char *output )
107 int ret, iterations = 0, keylen = 0;
108 unsigned char *p, *end;
109 asn1_buf kdf_alg_oid, enc_scheme_oid, kdf_alg_params, enc_scheme_params;
112 unsigned char key[32], iv[32];
121 end = p + pbe_params->
len;
136 if( ( ret =
asn1_get_alg( &p, end, &kdf_alg_oid, &kdf_alg_params ) ) != 0 )
144 if( ( ret = pkcs5_parse_pbkdf2_params( &kdf_alg_params,
145 &salt, &iterations, &keylen,
152 if( md_info == NULL )
155 if( ( ret =
asn1_get_alg( &p, end, &enc_scheme_oid, &enc_scheme_params ) ) != 0 )
162 if( cipher_info == NULL )
168 enc_scheme_params.
len != cipher_info->
iv_size )
173 memcpy( iv, enc_scheme_params.
p, enc_scheme_params.
len );
175 if( ( ret =
md_init_ctx( &md_ctx, md_info ) ) != 0 )
179 iterations, keylen, key ) ) != 0 )
187 if( ( ret =
cipher_setkey( &cipher_ctx, key, 8 * keylen, mode ) ) != 0 )
190 if( ( ret =
cipher_set_iv( &cipher_ctx, iv, enc_scheme_params.
len ) ) != 0 )
197 output, &olen ) ) != 0 )
202 if( ( ret =
cipher_finish( &cipher_ctx, output + olen, &olen ) ) != 0 )
213 size_t plen,
const unsigned char *salt,
size_t slen,
214 unsigned int iteration_count,
215 uint32_t key_length,
unsigned char *output )
223 unsigned char *out_p = output;
224 unsigned char counter[4];
226 memset( counter, 0, 4 );
229 if( iteration_count > 0xFFFFFFFF )
248 memcpy( md1, work, md_size );
250 for ( i = 1; i < iteration_count; i++ )
265 for( j = 0; j < md_size; j++ )
269 use_len = ( key_length < md_size ) ? key_length : md_size;
270 memcpy( out_p, work, use_len );
272 key_length -= (uint32_t) use_len;
275 for( i = 4; i > 0; i-- )
276 if( ++counter[i - 1] != 0 )
283 #if defined(POLARSSL_SELF_TEST)
289 size_t plen[MAX_TESTS] =
290 { 8, 8, 8, 8, 24, 9 };
292 unsigned char password[MAX_TESTS][32] =
298 "passwordPASSWORDpassword",
302 size_t slen[MAX_TESTS] =
303 { 4, 4, 4, 4, 36, 5 };
305 unsigned char salt[MAX_TESTS][40] =
311 "saltSALTsaltSALTsaltSALTsaltSALTsalt",
315 uint32_t it_cnt[MAX_TESTS] =
316 { 1, 2, 4096, 16777216, 4096, 4096 };
318 uint32_t key_len[MAX_TESTS] =
319 { 20, 20, 20, 20, 25, 16 };
322 unsigned char result_key[MAX_TESTS][32] =
324 { 0x0c, 0x60, 0xc8, 0x0f, 0x96, 0x1f, 0x0e, 0x71,
325 0xf3, 0xa9, 0xb5, 0x24, 0xaf, 0x60, 0x12, 0x06,
326 0x2f, 0xe0, 0x37, 0xa6 },
327 { 0xea, 0x6c, 0x01, 0x4d, 0xc7, 0x2d, 0x6f, 0x8c,
328 0xcd, 0x1e, 0xd9, 0x2a, 0xce, 0x1d, 0x41, 0xf0,
329 0xd8, 0xde, 0x89, 0x57 },
330 { 0x4b, 0x00, 0x79, 0x01, 0xb7, 0x65, 0x48, 0x9a,
331 0xbe, 0xad, 0x49, 0xd9, 0x26, 0xf7, 0x21, 0xd0,
332 0x65, 0xa4, 0x29, 0xc1 },
333 { 0xee, 0xfe, 0x3d, 0x61, 0xcd, 0x4d, 0xa4, 0xe4,
334 0xe9, 0x94, 0x5b, 0x3d, 0x6b, 0xa2, 0x15, 0x8c,
335 0x26, 0x34, 0xe9, 0x84 },
336 { 0x3d, 0x2e, 0xec, 0x4f, 0xe4, 0x1c, 0x84, 0x9b,
337 0x80, 0xc8, 0xd8, 0x36, 0x62, 0xc0, 0xe4, 0x4a,
338 0x8b, 0x29, 0x1a, 0x96, 0x4c, 0xf2, 0xf0, 0x70,
340 { 0x56, 0xfa, 0x6a, 0xa7, 0x55, 0x48, 0x09, 0x9d,
341 0xcc, 0x37, 0xd7, 0xf0, 0x34, 0x25, 0xe0, 0xc3 },
349 unsigned char key[64];
352 if( info_sha1 == NULL )
355 if( ( ret =
md_init_ctx( &sha1_ctx, info_sha1 ) ) != 0 )
358 for( i = 0; i < MAX_TESTS; i++ )
360 printf(
" PBKDF2 (SHA1) #%d: ", i );
363 slen[i], it_cnt[i], key_len[i], key );
365 memcmp( result_key[i], key, key_len[i] ) != 0 )
368 printf(
"failed\n" );
374 printf(
"passed\n" );