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Differential D31196 Diff 92238 sys/dev/safexcel/safexcel.c

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sys/dev/safexcel/safexcel.c

Show First 20 Lines • Show All 1,312 Lines • ▼ Show 20 Linessafexcel_setkey_xcbcmac(const uint8_t *key, int klen, uint32_t *hashkey)
memset(hashkey, 0, 2 * AES_BLOCK_LEN); memset(hashkey, 0, 2 * AES_BLOCK_LEN);
off = 2 * AES_BLOCK_LEN / sizeof(uint32_t); off = 2 * AES_BLOCK_LEN / sizeof(uint32_t);
for (i = 0; i < klen / sizeof(uint32_t); i++, key += 4) for (i = 0; i < klen / sizeof(uint32_t); i++, key += 4)
hashkey[i + off] = htobe32(le32dec(key)); hashkey[i + off] = htobe32(le32dec(key));
} }
static void static void
safexcel_setkey_hmac_digest(struct auth_hash *ahash, union authctx *ctx, safexcel_setkey_hmac_digest(const struct auth_hash *ahash, union authctx *ctx,
char *buf) char *buf)
{ {
int hashwords, i; int hashwords, i;
switch (ahash->type) { switch (ahash->type) {
case CRYPTO_SHA1_HMAC: case CRYPTO_SHA1_HMAC:
hashwords = ahash->hashsize / sizeof(uint32_t); hashwords = ahash->hashsize / sizeof(uint32_t);
for (i = 0; i < hashwords; i++) for (i = 0; i < hashwords; i++)
Show All 25 Lines
/* /*
* Pre-compute the inner and outer digests used in the HMAC algorithm. * Pre-compute the inner and outer digests used in the HMAC algorithm.
*/ */
static void static void
safexcel_setkey_hmac(const struct crypto_session_params *csp, safexcel_setkey_hmac(const struct crypto_session_params *csp,
const uint8_t *key, int klen, uint8_t *ipad, uint8_t *opad) const uint8_t *key, int klen, uint8_t *ipad, uint8_t *opad)
{ {
union authctx ctx; union authctx ctx;
struct auth_hash *ahash; const struct auth_hash *ahash;
ahash = crypto_auth_hash(csp); ahash = crypto_auth_hash(csp);
hmac_init_ipad(ahash, key, klen, &ctx); hmac_init_ipad(ahash, key, klen, &ctx);
safexcel_setkey_hmac_digest(ahash, &ctx, ipad); safexcel_setkey_hmac_digest(ahash, &ctx, ipad);
hmac_init_opad(ahash, key, klen, &ctx); hmac_init_opad(ahash, key, klen, &ctx);
safexcel_setkey_hmac_digest(ahash, &ctx, opad); safexcel_setkey_hmac_digest(ahash, &ctx, opad);
explicit_bzero(&ctx, ahash->ctxsize); explicit_bzero(&ctx, ahash->ctxsize);
} }
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