forked from wolfSSL/wolfssl
rsa des3 random : update
This commit is contained in:
Jacob Barthelmeh
@@ -23,27 +23,16 @@
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#include <config.h>
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#endif
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#include <cyassl/ctaocrypt/settings.h>
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#include <wolfssl/wolfcrypt/settings.h>
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/* on HPUX 11 you may need to install /dev/random see
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http://h20293.www2.hp.com/portal/swdepot/displayProductInfo.do?productNumber=KRNG11I
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*/
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#ifdef HAVE_FIPS
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/* set NO_WRAPPERS before headers, use direct internal f()s not wrappers */
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#define FIPS_NO_WRAPPERS
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#endif
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#include <wolfssl/wolfcrypt/random.h>
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#include <cyassl/ctaocrypt/error-crypt.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef HAVE_FIPS
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int wc_GenerateSeed(OS_Seed* os, byte* seed, word32 sz)
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{
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return GenerateSeed(os, seed, sz);
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@@ -127,9 +116,963 @@ int wc_RNG_GenerateByte(RNG* rng, byte* b)
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#define RNG_HealthTest RNG_HealthTest_fips
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#endif /* FIPS_NO_WRAPPERS */
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#endif /* HAVE_FIPS */
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#else
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#include <wolfssl/wolfcrypt/error-crypt.h>
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#if defined(HAVE_HASHDRBG) || defined(NO_RC4)
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#include <wolfssl/wolfcrypt/sha256.h>
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#ifdef NO_INLINE
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#include <wolfssl/wolfcrypt/misc.h>
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#else
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#include <wolfcrypt/src/misc.c>
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#endif
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#endif /* HAVE_HASHDRBG || NO_RC4 */
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#if defined(USE_WINDOWS_API)
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#ifndef _WIN32_WINNT
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#define _WIN32_WINNT 0x0400
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#endif
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#include <windows.h>
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#include <wincrypt.h>
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#else
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#if !defined(NO_DEV_RANDOM) && !defined(WOLFSSL_MDK_ARM) \
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&& !defined(WOLFSSL_IAR_ARM)
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#include <fcntl.h>
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#ifndef EBSNET
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#include <unistd.h>
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#endif
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#else
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/* include headers that may be needed to get good seed */
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#endif
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#endif /* USE_WINDOWS_API */
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#ifdef __cplusplus
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} /* extern "C" */
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#if defined(HAVE_HASHDRBG) || defined(NO_RC4)
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/* Start NIST DRBG code */
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#define OUTPUT_BLOCK_LEN (SHA256_DIGEST_SIZE)
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#define MAX_REQUEST_LEN (0x10000)
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#define RESEED_INTERVAL (1000000)
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#define SECURITY_STRENGTH (256)
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#define ENTROPY_SZ (SECURITY_STRENGTH/8)
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#define NONCE_SZ (ENTROPY_SZ/2)
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#define ENTROPY_NONCE_SZ (ENTROPY_SZ+NONCE_SZ)
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/* Internal return codes */
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#define DRBG_SUCCESS 0
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#define DRBG_ERROR 1
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#define DRBG_FAILURE 2
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#define DRBG_NEED_RESEED 3
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#define DRBG_CONT_FAILURE 4
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/* RNG health states */
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#define DRBG_NOT_INIT 0
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#define DRBG_OK 1
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#define DRBG_FAILED 2
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#define DRBG_CONT_FAILED 3
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enum {
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drbgInitC = 0,
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drbgReseed = 1,
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drbgGenerateW = 2,
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drbgGenerateH = 3,
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drbgInitV
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};
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typedef struct DRBG {
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Sha256 sha;
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byte digest[SHA256_DIGEST_SIZE];
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byte V[DRBG_SEED_LEN];
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byte C[DRBG_SEED_LEN];
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word32 reseedCtr;
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word32 lastBlock;
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byte matchCount;
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} DRBG;
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/* Hash Derivation Function */
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/* Returns: DRBG_SUCCESS or DRBG_FAILURE */
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static int Hash_df(DRBG* drbg, byte* out, word32 outSz, byte type,
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const byte* inA, word32 inASz,
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const byte* inB, word32 inBSz)
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{
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byte ctr;
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int i;
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int len;
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word32 bits = (outSz * 8); /* reverse byte order */
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#ifdef LITTLE_ENDIAN_ORDER
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bits = ByteReverseWord32(bits);
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#endif
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len = (outSz / OUTPUT_BLOCK_LEN)
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+ ((outSz % OUTPUT_BLOCK_LEN) ? 1 : 0);
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for (i = 0, ctr = 1; i < len; i++, ctr++)
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{
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if (InitSha256(&drbg->sha) != 0)
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return DRBG_FAILURE;
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if (Sha256Update(&drbg->sha, &ctr, sizeof(ctr)) != 0)
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return DRBG_FAILURE;
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if (Sha256Update(&drbg->sha, (byte*)&bits, sizeof(bits)) != 0)
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return DRBG_FAILURE;
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/* churning V is the only string that doesn't have
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* the type added */
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if (type != drbgInitV)
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if (Sha256Update(&drbg->sha, &type, sizeof(type)) != 0)
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return DRBG_FAILURE;
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if (Sha256Update(&drbg->sha, inA, inASz) != 0)
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return DRBG_FAILURE;
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if (inB != NULL && inBSz > 0)
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if (Sha256Update(&drbg->sha, inB, inBSz) != 0)
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return DRBG_FAILURE;
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if (Sha256Final(&drbg->sha, drbg->digest) != 0)
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return DRBG_FAILURE;
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if (outSz > OUTPUT_BLOCK_LEN) {
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XMEMCPY(out, drbg->digest, OUTPUT_BLOCK_LEN);
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outSz -= OUTPUT_BLOCK_LEN;
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out += OUTPUT_BLOCK_LEN;
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}
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else {
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XMEMCPY(out, drbg->digest, outSz);
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}
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}
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return DRBG_SUCCESS;
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}
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/* Returns: DRBG_SUCCESS or DRBG_FAILURE */
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static int Hash_DRBG_Reseed(DRBG* drbg, const byte* entropy, word32 entropySz)
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{
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byte seed[DRBG_SEED_LEN];
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if (Hash_df(drbg, seed, sizeof(seed), drbgReseed, drbg->V, sizeof(drbg->V),
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entropy, entropySz) != DRBG_SUCCESS) {
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return DRBG_FAILURE;
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}
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XMEMCPY(drbg->V, seed, sizeof(drbg->V));
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XMEMSET(seed, 0, sizeof(seed));
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if (Hash_df(drbg, drbg->C, sizeof(drbg->C), drbgInitC, drbg->V,
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sizeof(drbg->V), NULL, 0) != DRBG_SUCCESS) {
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return DRBG_FAILURE;
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}
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drbg->reseedCtr = 1;
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drbg->lastBlock = 0;
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drbg->matchCount = 0;
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return DRBG_SUCCESS;
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}
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static INLINE void array_add_one(byte* data, word32 dataSz)
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{
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int i;
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for (i = dataSz - 1; i >= 0; i--)
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{
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data[i]++;
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if (data[i] != 0) break;
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}
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}
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/* Returns: DRBG_SUCCESS or DRBG_FAILURE */
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static int Hash_gen(DRBG* drbg, byte* out, word32 outSz, const byte* V)
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{
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byte data[DRBG_SEED_LEN];
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int i;
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int len;
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word32 checkBlock;
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/* Special case: outSz is 0 and out is NULL. wc_Generate a block to save for
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* the continuous test. */
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if (outSz == 0) outSz = 1;
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len = (outSz / OUTPUT_BLOCK_LEN) + ((outSz % OUTPUT_BLOCK_LEN) ? 1 : 0);
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XMEMCPY(data, V, sizeof(data));
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for (i = 0; i < len; i++) {
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if (InitSha256(&drbg->sha) != 0 ||
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Sha256Update(&drbg->sha, data, sizeof(data)) != 0 ||
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Sha256Final(&drbg->sha, drbg->digest) != 0) {
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return DRBG_FAILURE;
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}
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checkBlock = *(word32*)drbg->digest;
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if (drbg->reseedCtr > 1 && checkBlock == drbg->lastBlock) {
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if (drbg->matchCount == 1) {
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return DRBG_CONT_FAILURE;
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}
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else {
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if (i == len) {
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len++;
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}
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drbg->matchCount = 1;
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}
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}
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else {
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drbg->matchCount = 0;
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drbg->lastBlock = checkBlock;
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}
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if (outSz >= OUTPUT_BLOCK_LEN) {
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XMEMCPY(out, drbg->digest, OUTPUT_BLOCK_LEN);
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outSz -= OUTPUT_BLOCK_LEN;
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out += OUTPUT_BLOCK_LEN;
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array_add_one(data, DRBG_SEED_LEN);
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}
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else if (out != NULL && outSz != 0) {
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XMEMCPY(out, drbg->digest, outSz);
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outSz = 0;
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}
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}
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XMEMSET(data, 0, sizeof(data));
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return DRBG_SUCCESS;
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}
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static INLINE void array_add(byte* d, word32 dLen, const byte* s, word32 sLen)
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{
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word16 carry = 0;
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if (dLen > 0 && sLen > 0 && dLen >= sLen) {
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int sIdx, dIdx;
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for (sIdx = sLen - 1, dIdx = dLen - 1; sIdx >= 0; dIdx--, sIdx--)
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{
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carry += d[dIdx] + s[sIdx];
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d[dIdx] = carry;
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carry >>= 8;
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}
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for (; carry != 0 && dIdx >= 0; dIdx--) {
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carry += d[dIdx];
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d[dIdx] = carry;
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carry >>= 8;
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}
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}
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}
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/* Returns: DRBG_SUCCESS, DRBG_NEED_RESEED, or DRBG_FAILURE */
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static int Hash_DRBG_Generate(DRBG* drbg, byte* out, word32 outSz)
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{
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int ret = DRBG_NEED_RESEED;
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if (drbg->reseedCtr != RESEED_INTERVAL) {
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byte type = drbgGenerateH;
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word32 reseedCtr = drbg->reseedCtr;
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ret = Hash_gen(drbg, out, outSz, drbg->V);
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if (ret == DRBG_SUCCESS) {
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if (InitSha256(&drbg->sha) != 0 ||
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Sha256Update(&drbg->sha, &type, sizeof(type)) != 0 ||
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Sha256Update(&drbg->sha, drbg->V, sizeof(drbg->V)) != 0 ||
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Sha256Final(&drbg->sha, drbg->digest) != 0) {
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ret = DRBG_FAILURE;
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}
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else {
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array_add(drbg->V, sizeof(drbg->V),
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drbg->digest, sizeof(drbg->digest));
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array_add(drbg->V, sizeof(drbg->V), drbg->C, sizeof(drbg->C));
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#ifdef LITTLE_ENDIAN_ORDER
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reseedCtr = ByteReverseWord32(reseedCtr);
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#endif
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array_add(drbg->V, sizeof(drbg->V),
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(byte*)&reseedCtr, sizeof(reseedCtr));
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ret = DRBG_SUCCESS;
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}
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drbg->reseedCtr++;
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}
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}
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return ret;
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}
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/* Returns: DRBG_SUCCESS or DRBG_FAILURE */
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static int Hash_DRBG_Instantiate(DRBG* drbg, const byte* seed, word32 seedSz,
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const byte* nonce, word32 nonceSz)
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{
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int ret = DRBG_FAILURE;
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XMEMSET(drbg, 0, sizeof(DRBG));
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if (Hash_df(drbg, drbg->V, sizeof(drbg->V), drbgInitV, seed, seedSz,
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nonce, nonceSz) == DRBG_SUCCESS &&
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Hash_df(drbg, drbg->C, sizeof(drbg->C), drbgInitC, drbg->V,
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sizeof(drbg->V), NULL, 0) == DRBG_SUCCESS) {
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drbg->reseedCtr = 1;
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drbg->lastBlock = 0;
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drbg->matchCount = 0;
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ret = DRBG_SUCCESS;
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}
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return ret;
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}
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/* Returns: DRBG_SUCCESS */
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static int Hash_DRBG_Uninstantiate(DRBG* drbg)
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{
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XMEMSET(drbg, 0, sizeof(DRBG));
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return DRBG_SUCCESS;
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}
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/* End NIST DRBG Code */
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/* Get seed and key cipher */
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int wc_InitRng(RNG* rng)
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{
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int ret = BAD_FUNC_ARG;
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if (rng != NULL) {
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byte entropy[ENTROPY_NONCE_SZ];
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rng->drbg = (struct DRBG*)XMALLOC(sizeof(DRBG), NULL, DYNAMIC_TYPE_RNG);
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if (rng->drbg == NULL) {
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ret = MEMORY_E;
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}
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/* This doesn't use a separate nonce. The entropy input will be
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* the default size plus the size of the nonce making the seed
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* size. */
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else if (wc_GenerateSeed(&rng->seed, entropy, ENTROPY_NONCE_SZ) == 0 &&
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Hash_DRBG_Instantiate(rng->drbg, entropy, ENTROPY_NONCE_SZ,
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NULL, 0) == DRBG_SUCCESS) {
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ret = Hash_DRBG_Generate(rng->drbg, NULL, 0);
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}
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else
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ret = DRBG_FAILURE;
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XMEMSET(entropy, 0, ENTROPY_NONCE_SZ);
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if (ret == DRBG_SUCCESS) {
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rng->status = DRBG_OK;
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ret = 0;
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}
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else if (ret == DRBG_CONT_FAILURE) {
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rng->status = DRBG_CONT_FAILED;
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ret = DRBG_CONT_FIPS_E;
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}
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else if (ret == DRBG_FAILURE) {
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rng->status = DRBG_FAILED;
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ret = RNG_FAILURE_E;
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}
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else {
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rng->status = DRBG_FAILED;
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}
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}
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return ret;
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}
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/* place a generated block in output */
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int wc_RNG_GenerateBlock(RNG* rng, byte* output, word32 sz)
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{
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int ret;
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if (rng == NULL || output == NULL || sz > MAX_REQUEST_LEN)
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return BAD_FUNC_ARG;
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if (rng->status != DRBG_OK)
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return RNG_FAILURE_E;
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ret = Hash_DRBG_Generate(rng->drbg, output, sz);
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if (ret == DRBG_NEED_RESEED) {
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byte entropy[ENTROPY_SZ];
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|
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if (wc_GenerateSeed(&rng->seed, entropy, ENTROPY_SZ) == 0 &&
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Hash_DRBG_Reseed(rng->drbg, entropy, ENTROPY_SZ) == DRBG_SUCCESS) {
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|
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ret = Hash_DRBG_Generate(rng->drbg, NULL, 0);
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if (ret == DRBG_SUCCESS)
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ret = Hash_DRBG_Generate(rng->drbg, output, sz);
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||||
}
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else
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ret = DRBG_FAILURE;
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|
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XMEMSET(entropy, 0, ENTROPY_SZ);
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||||
}
|
||||
|
||||
if (ret == DRBG_SUCCESS) {
|
||||
ret = 0;
|
||||
}
|
||||
else if (ret == DRBG_CONT_FAILURE) {
|
||||
ret = DRBG_CONT_FIPS_E;
|
||||
rng->status = DRBG_CONT_FAILED;
|
||||
}
|
||||
else {
|
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ret = RNG_FAILURE_E;
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rng->status = DRBG_FAILED;
|
||||
}
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||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
int wc_RNG_GenerateByte(RNG* rng, byte* b)
|
||||
{
|
||||
return wc_RNG_GenerateBlock(rng, b, 1);
|
||||
}
|
||||
|
||||
|
||||
int wc_FreeRng(RNG* rng)
|
||||
{
|
||||
int ret = BAD_FUNC_ARG;
|
||||
|
||||
if (rng != NULL) {
|
||||
if (Hash_DRBG_Uninstantiate(rng->drbg) == DRBG_SUCCESS)
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||||
ret = 0;
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||||
else
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||||
ret = RNG_FAILURE_E;
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||||
|
||||
XFREE(rng->drbg, NULL, DYNAMIC_TYPE_RNG);
|
||||
rng->drbg = NULL;
|
||||
rng->status = DRBG_NOT_INIT;
|
||||
}
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
int wc_RNG_HealthTest(int reseed, const byte* entropyA, word32 entropyASz,
|
||||
const byte* entropyB, word32 entropyBSz,
|
||||
byte* output, word32 outputSz)
|
||||
{
|
||||
DRBG drbg;
|
||||
|
||||
if (entropyA == NULL || output == NULL)
|
||||
return BAD_FUNC_ARG;
|
||||
|
||||
if (reseed != 0 && entropyB == NULL)
|
||||
return BAD_FUNC_ARG;
|
||||
|
||||
if (outputSz != (SHA256_DIGEST_SIZE * 4))
|
||||
return -1;
|
||||
|
||||
if (Hash_DRBG_Instantiate(&drbg, entropyA, entropyASz, NULL, 0) != 0)
|
||||
return -1;
|
||||
|
||||
if (reseed) {
|
||||
if (Hash_DRBG_Reseed(&drbg, entropyB, entropyBSz) != 0) {
|
||||
Hash_DRBG_Uninstantiate(&drbg);
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
if (Hash_DRBG_Generate(&drbg, output, outputSz) != 0) {
|
||||
Hash_DRBG_Uninstantiate(&drbg);
|
||||
return -1;
|
||||
}
|
||||
|
||||
if (Hash_DRBG_Generate(&drbg, output, outputSz) != 0) {
|
||||
Hash_DRBG_Uninstantiate(&drbg);
|
||||
return -1;
|
||||
}
|
||||
|
||||
Hash_DRBG_Uninstantiate(&drbg);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
#else /* HAVE_HASHDRBG || NO_RC4 */
|
||||
|
||||
/* Get seed and key cipher */
|
||||
int wc_InitRng(RNG* rng)
|
||||
{
|
||||
int ret;
|
||||
#ifdef WOLFSSL_SMALL_STACK
|
||||
byte* key;
|
||||
byte* junk;
|
||||
#else
|
||||
byte key[32];
|
||||
byte junk[256];
|
||||
#endif
|
||||
|
||||
#ifdef HAVE_CAVIUM
|
||||
if (rng->magic == WOLFSSL_RNG_CAVIUM_MAGIC)
|
||||
return 0;
|
||||
#endif
|
||||
|
||||
#ifdef WOLFSSL_SMALL_STACK
|
||||
key = (byte*)XMALLOC(32, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
||||
if (key == NULL)
|
||||
return MEMORY_E;
|
||||
|
||||
junk = (byte*)XMALLOC(256, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
||||
if (junk == NULL) {
|
||||
XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
||||
return MEMORY_E;
|
||||
}
|
||||
#endif
|
||||
|
||||
ret = wc_GenerateSeed(&rng->seed, key, 32);
|
||||
|
||||
if (ret == 0) {
|
||||
Arc4SetKey(&rng->cipher, key, sizeof(key));
|
||||
|
||||
ret = wc_RNG_GenerateBlock(rng, junk, 256); /*rid initial state*/
|
||||
}
|
||||
|
||||
#ifdef WOLFSSL_SMALL_STACK
|
||||
XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
||||
XFREE(junk, NULL, DYNAMIC_TYPE_TMP_BUFFER);
|
||||
#endif
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
#ifdef HAVE_CAVIUM
|
||||
static void CaviumRNG_GenerateBlock(RNG* rng, byte* output, word32 sz);
|
||||
#endif
|
||||
|
||||
/* place a generated block in output */
|
||||
int wc_RNG_GenerateBlock(RNG* rng, byte* output, word32 sz)
|
||||
{
|
||||
#ifdef HAVE_CAVIUM
|
||||
if (rng->magic == WOLFSSL_RNG_CAVIUM_MAGIC)
|
||||
return CaviumRNG_GenerateBlock(rng, output, sz);
|
||||
#endif
|
||||
XMEMSET(output, 0, sz);
|
||||
Arc4Process(&rng->cipher, output, output, sz);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
int wc_RNG_GenerateByte(RNG* rng, byte* b)
|
||||
{
|
||||
return wc_RNG_GenerateBlock(rng, b, 1);
|
||||
}
|
||||
|
||||
|
||||
#ifdef HAVE_CAVIUM
|
||||
|
||||
#include <cyassl/ctaocrypt/logging.h>
|
||||
#include "cavium_common.h"
|
||||
|
||||
/* Initiliaze RNG for use with Nitrox device */
|
||||
int wc_InitRngCavium(RNG* rng, int devId)
|
||||
{
|
||||
if (rng == NULL)
|
||||
return -1;
|
||||
|
||||
rng->devId = devId;
|
||||
rng->magic = WOLFSSL_RNG_CAVIUM_MAGIC;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
static void CaviumRNG_GenerateBlock(RNG* rng, byte* output, word32 sz)
|
||||
{
|
||||
cyassl_word offset = 0;
|
||||
word32 requestId;
|
||||
|
||||
while (sz > WOLFSSL_MAX_16BIT) {
|
||||
word16 slen = (word16)WOLFSSL_MAX_16BIT;
|
||||
if (CspRandom(CAVIUM_BLOCKING, slen, output + offset, &requestId,
|
||||
rng->devId) != 0) {
|
||||
WOLFSSL_MSG("Cavium RNG failed");
|
||||
}
|
||||
sz -= WOLFSSL_MAX_16BIT;
|
||||
offset += WOLFSSL_MAX_16BIT;
|
||||
}
|
||||
if (sz) {
|
||||
word16 slen = (word16)sz;
|
||||
if (CspRandom(CAVIUM_BLOCKING, slen, output + offset, &requestId,
|
||||
rng->devId) != 0) {
|
||||
WOLFSSL_MSG("Cavium RNG failed");
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
#endif /* HAVE_CAVIUM */
|
||||
|
||||
#endif /* HAVE_HASHDRBG || NO_RC4 */
|
||||
|
||||
|
||||
#if defined(USE_WINDOWS_API)
|
||||
|
||||
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
if(!CryptAcquireContext(&os->handle, 0, 0, PROV_RSA_FULL,
|
||||
CRYPT_VERIFYCONTEXT))
|
||||
return WINCRYPT_E;
|
||||
|
||||
if (!CryptGenRandom(os->handle, sz, output))
|
||||
return CRYPTGEN_E;
|
||||
|
||||
CryptReleaseContext(os->handle, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
#elif defined(HAVE_RTP_SYS) || defined(EBSNET)
|
||||
|
||||
#include "rtprand.h" /* rtp_rand () */
|
||||
#include "rtptime.h" /* rtp_get_system_msec() */
|
||||
|
||||
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
int i;
|
||||
rtp_srand(rtp_get_system_msec());
|
||||
|
||||
for (i = 0; i < sz; i++ ) {
|
||||
output[i] = rtp_rand() % 256;
|
||||
if ( (i % 8) == 7)
|
||||
rtp_srand(rtp_get_system_msec());
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
|
||||
#elif defined(MICRIUM)
|
||||
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
#if (NET_SECURE_MGR_CFG_EN == DEF_ENABLED)
|
||||
NetSecure_InitSeed(output, sz);
|
||||
#endif
|
||||
return 0;
|
||||
}
|
||||
|
||||
#elif defined(MBED)
|
||||
|
||||
/* write a real one !!!, just for testing board */
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < sz; i++ )
|
||||
output[i] = i;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#elif defined(MICROCHIP_PIC32)
|
||||
|
||||
#ifdef MICROCHIP_MPLAB_HARMONY
|
||||
#define PIC32_SEED_COUNT _CP0_GET_COUNT
|
||||
#else
|
||||
#if !defined(WOLFSSL_MICROCHIP_PIC32MZ)
|
||||
#include <peripheral/timer.h>
|
||||
#endif
|
||||
#define PIC32_SEED_COUNT ReadCoreTimer
|
||||
#endif
|
||||
#ifdef WOLFSSL_MIC32MZ_RNG
|
||||
#include "xc.h"
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
int i ;
|
||||
byte rnd[8] ;
|
||||
word32 *rnd32 = (word32 *)rnd ;
|
||||
word32 size = sz ;
|
||||
byte* op = output ;
|
||||
|
||||
/* This part has to be replaced with better random seed */
|
||||
RNGNUMGEN1 = ReadCoreTimer();
|
||||
RNGPOLY1 = ReadCoreTimer();
|
||||
RNGPOLY2 = ReadCoreTimer();
|
||||
RNGNUMGEN2 = ReadCoreTimer();
|
||||
#ifdef DEBUG_WOLFSSL
|
||||
printf("GenerateSeed::Seed=%08x, %08x\n", RNGNUMGEN1, RNGNUMGEN2) ;
|
||||
#endif
|
||||
RNGCONbits.PLEN = 0x40;
|
||||
RNGCONbits.PRNGEN = 1;
|
||||
for(i=0; i<5; i++) { /* wait for RNGNUMGEN ready */
|
||||
volatile int x ;
|
||||
x = RNGNUMGEN1 ;
|
||||
x = RNGNUMGEN2 ;
|
||||
}
|
||||
do {
|
||||
rnd32[0] = RNGNUMGEN1;
|
||||
rnd32[1] = RNGNUMGEN2;
|
||||
|
||||
for(i=0; i<8; i++, op++) {
|
||||
*op = rnd[i] ;
|
||||
size -- ;
|
||||
if(size==0)break ;
|
||||
}
|
||||
} while(size) ;
|
||||
return 0;
|
||||
}
|
||||
#else /* WOLFSSL_MIC32MZ_RNG */
|
||||
/* uses the core timer, in nanoseconds to seed srand */
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
int i;
|
||||
srand(PIC32_SEED_COUNT() * 25);
|
||||
|
||||
for (i = 0; i < sz; i++ ) {
|
||||
output[i] = rand() % 256;
|
||||
if ( (i % 8) == 7)
|
||||
srand(PIC32_SEED_COUNT() * 25);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
#endif /* WOLFSSL_MIC32MZ_RNG */
|
||||
|
||||
#elif defined(FREESCALE_MQX)
|
||||
|
||||
#ifdef FREESCALE_K70_RNGA
|
||||
/*
|
||||
* wc_Generates a RNG seed using the Random Number Generator Accelerator
|
||||
* on the Kinetis K70. Documentation located in Chapter 37 of
|
||||
* K70 Sub-Family Reference Manual (see Note 3 in the README for link).
|
||||
*/
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
int i;
|
||||
|
||||
/* turn on RNGA module */
|
||||
SIM_SCGC3 |= SIM_SCGC3_RNGA_MASK;
|
||||
|
||||
/* set SLP bit to 0 - "RNGA is not in sleep mode" */
|
||||
RNG_CR &= ~RNG_CR_SLP_MASK;
|
||||
|
||||
/* set HA bit to 1 - "security violations masked" */
|
||||
RNG_CR |= RNG_CR_HA_MASK;
|
||||
|
||||
/* set GO bit to 1 - "output register loaded with data" */
|
||||
RNG_CR |= RNG_CR_GO_MASK;
|
||||
|
||||
for (i = 0; i < sz; i++) {
|
||||
|
||||
/* wait for RNG FIFO to be full */
|
||||
while((RNG_SR & RNG_SR_OREG_LVL(0xF)) == 0) {}
|
||||
|
||||
/* get value */
|
||||
output[i] = RNG_OR;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#elif defined(FREESCALE_K53_RNGB)
|
||||
/*
|
||||
* wc_Generates a RNG seed using the Random Number Generator (RNGB)
|
||||
* on the Kinetis K53. Documentation located in Chapter 33 of
|
||||
* K53 Sub-Family Reference Manual (see note in the README for link).
|
||||
*/
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
int i;
|
||||
|
||||
/* turn on RNGB module */
|
||||
SIM_SCGC3 |= SIM_SCGC3_RNGB_MASK;
|
||||
|
||||
/* reset RNGB */
|
||||
RNG_CMD |= RNG_CMD_SR_MASK;
|
||||
|
||||
/* FIFO generate interrupt, return all zeros on underflow,
|
||||
* set auto reseed */
|
||||
RNG_CR |= (RNG_CR_FUFMOD_MASK | RNG_CR_AR_MASK);
|
||||
|
||||
/* gen seed, clear interrupts, clear errors */
|
||||
RNG_CMD |= (RNG_CMD_GS_MASK | RNG_CMD_CI_MASK | RNG_CMD_CE_MASK);
|
||||
|
||||
/* wait for seeding to complete */
|
||||
while ((RNG_SR & RNG_SR_SDN_MASK) == 0) {}
|
||||
|
||||
for (i = 0; i < sz; i++) {
|
||||
|
||||
/* wait for a word to be available from FIFO */
|
||||
while((RNG_SR & RNG_SR_FIFO_LVL_MASK) == 0) {}
|
||||
|
||||
/* get value */
|
||||
output[i] = RNG_OUT;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#else
|
||||
#warning "write a real random seed!!!!, just for testing now"
|
||||
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < sz; i++ )
|
||||
output[i] = i;
|
||||
|
||||
return 0;
|
||||
}
|
||||
#endif /* FREESCALE_K70_RNGA */
|
||||
|
||||
#elif defined(WOLFSSL_SAFERTOS) || defined(CYASSL_LEANPSK) \
|
||||
|| defined(WOLFSSL_IAR_ARM) || defined(CYASSL_MDK_ARM)
|
||||
|
||||
#warning "write a real random seed!!!!, just for testing now"
|
||||
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
word32 i;
|
||||
for (i = 0; i < sz; i++ )
|
||||
output[i] = i;
|
||||
|
||||
(void)os;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#elif defined(STM32F2_RNG)
|
||||
#undef RNG
|
||||
#include "stm32f2xx_rng.h"
|
||||
#include "stm32f2xx_rcc.h"
|
||||
/*
|
||||
* wc_Generate a RNG seed using the hardware random number generator
|
||||
* on the STM32F2. Documentation located in STM32F2xx Standard Peripheral
|
||||
* Library document (See note in README).
|
||||
*/
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
int i;
|
||||
|
||||
/* enable RNG clock source */
|
||||
RCC_AHB2PeriphClockCmd(RCC_AHB2Periph_RNG, ENABLE);
|
||||
|
||||
/* enable RNG peripheral */
|
||||
RNG_Cmd(ENABLE);
|
||||
|
||||
for (i = 0; i < sz; i++) {
|
||||
/* wait until RNG number is ready */
|
||||
while(RNG_GetFlagStatus(RNG_FLAG_DRDY)== RESET) { }
|
||||
|
||||
/* get value */
|
||||
output[i] = RNG_GetRandomNumber();
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
#elif defined(WOLFSSL_LPC43xx) || defined(CYASSL_STM32F2xx)
|
||||
|
||||
#warning "write a real random seed!!!!, just for testing now"
|
||||
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < sz; i++ )
|
||||
output[i] = i;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#elif defined(WOLFSSL_TIRTOS)
|
||||
|
||||
#include <xdc/runtime/Timestamp.h>
|
||||
#include <stdlib.h>
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
int i;
|
||||
srand(xdc_runtime_Timestamp_get32());
|
||||
|
||||
for (i = 0; i < sz; i++ ) {
|
||||
output[i] = rand() % 256;
|
||||
if ((i % 8) == 7) {
|
||||
srand(xdc_runtime_Timestamp_get32());
|
||||
}
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#elif defined(CUSTOM_RAND_GENERATE)
|
||||
|
||||
/* Implement your own random generation function
|
||||
* word32 rand_gen(void);
|
||||
* #define CUSTOM_RAND_GENERATE rand_gen */
|
||||
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
int i;
|
||||
|
||||
for (i = 0; i < sz; i++ )
|
||||
output[i] = CUSTOM_RAND_GENERATE();
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
#elif defined(NO_DEV_RANDOM)
|
||||
|
||||
#error "you need to write an os specific wc_GenerateSeed() here"
|
||||
|
||||
/*
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
*/
|
||||
|
||||
|
||||
#else /* !USE_WINDOWS_API && !HAVE_RPT_SYS && !MICRIUM && !NO_DEV_RANDOM */
|
||||
|
||||
|
||||
/* may block */
|
||||
int wc_GenerateSeed(OS_Seed* os, byte* output, word32 sz)
|
||||
{
|
||||
int ret = 0;
|
||||
|
||||
os->fd = open("/dev/urandom",O_RDONLY);
|
||||
if (os->fd == -1) {
|
||||
/* may still have /dev/random */
|
||||
os->fd = open("/dev/random",O_RDONLY);
|
||||
if (os->fd == -1)
|
||||
return OPEN_RAN_E;
|
||||
}
|
||||
|
||||
while (sz) {
|
||||
int len = (int)read(os->fd, output, sz);
|
||||
if (len == -1) {
|
||||
ret = READ_RAN_E;
|
||||
break;
|
||||
}
|
||||
|
||||
sz -= len;
|
||||
output += len;
|
||||
|
||||
if (sz) {
|
||||
#ifdef BLOCKING
|
||||
sleep(0); /* context switch */
|
||||
#else
|
||||
ret = RAN_BLOCK_E;
|
||||
break;
|
||||
#endif
|
||||
}
|
||||
}
|
||||
close(os->fd);
|
||||
|
||||
return ret;
|
||||
}
|
||||
|
||||
#endif /* USE_WINDOWS_API */
|
||||
#endif /* HAVE_FIPS */
|
||||
|
||||
|
||||
Reference in New Issue
Block a user