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yaml
---
r: 34391
b: refs/heads/master
c: 73af07d
h: refs/heads/master
i:
  34389: ecf38b3
  34387: 14017d4
  34383: 6642a5e
v: v3
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Herbert Xu authored and Linus Torvalds committed Sep 23, 2006
1 parent fbcd0bd commit a2e5bca
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Showing 2 changed files with 19 additions and 7 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 79da342c31ea839277060c1d2086aaf3b5cd85a4
refs/heads/master: 73af07de3e32b9ac328c3d1417258bb98a9b0a9b
24 changes: 18 additions & 6 deletions trunk/crypto/hmac.c
Original file line number Diff line number Diff line change
Expand Up @@ -92,13 +92,17 @@ static int hmac_init(struct hash_desc *pdesc)
struct hmac_ctx *ctx = align_ptr(ipad + bs * 2 + ds, sizeof(void *));
struct hash_desc desc;
struct scatterlist tmp;
int err;

desc.tfm = ctx->child;
desc.flags = pdesc->flags & CRYPTO_TFM_REQ_MAY_SLEEP;
sg_set_buf(&tmp, ipad, bs);

return unlikely(crypto_hash_init(&desc)) ?:
crypto_hash_update(&desc, &tmp, bs);
err = crypto_hash_init(&desc);
if (unlikely(err))
return err;

return crypto_hash_update(&desc, &tmp, bs);
}

static int hmac_update(struct hash_desc *pdesc,
Expand All @@ -123,13 +127,17 @@ static int hmac_final(struct hash_desc *pdesc, u8 *out)
struct hmac_ctx *ctx = align_ptr(digest + ds, sizeof(void *));
struct hash_desc desc;
struct scatterlist tmp;
int err;

desc.tfm = ctx->child;
desc.flags = pdesc->flags & CRYPTO_TFM_REQ_MAY_SLEEP;
sg_set_buf(&tmp, opad, bs + ds);

return unlikely(crypto_hash_final(&desc, digest)) ?:
crypto_hash_digest(&desc, &tmp, bs + ds, out);
err = crypto_hash_final(&desc, digest);
if (unlikely(err))
return err;

return crypto_hash_digest(&desc, &tmp, bs + ds, out);
}

static int hmac_digest(struct hash_desc *pdesc, struct scatterlist *sg,
Expand All @@ -145,6 +153,7 @@ static int hmac_digest(struct hash_desc *pdesc, struct scatterlist *sg,
struct hash_desc desc;
struct scatterlist sg1[2];
struct scatterlist sg2[1];
int err;

desc.tfm = ctx->child;
desc.flags = pdesc->flags & CRYPTO_TFM_REQ_MAY_SLEEP;
Expand All @@ -154,8 +163,11 @@ static int hmac_digest(struct hash_desc *pdesc, struct scatterlist *sg,
sg1[1].length = 0;
sg_set_buf(sg2, opad, bs + ds);

return unlikely(crypto_hash_digest(&desc, sg1, nbytes + bs, digest)) ?:
crypto_hash_digest(&desc, sg2, bs + ds, out);
err = crypto_hash_digest(&desc, sg1, nbytes + bs, digest);
if (unlikely(err))
return err;

return crypto_hash_digest(&desc, sg2, bs + ds, out);
}

static int hmac_init_tfm(struct crypto_tfm *tfm)
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