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Commit ff2bad5f authored by Linus Torvalds's avatar Linus Torvalds
Browse files

Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: ccm - Fix handling of null assoc data
  crypto: blkcipher - Fix WARN_ON handling in walk_done
  crypto: authenc - Fix zero-length IV crash
parents 78d70d48 516280e7

crypto/authenc.c

+15 −9
Original line number Diff line number Diff line
@@ -158,16 +158,19 @@ static int crypto_authenc_genicv(struct aead_request *req, u8 *iv, 
	dstp = sg_page(dst);

	vdst = PageHighMem(dstp) ? NULL : page_address(dstp) + dst->offset;



	if (ivsize) {

		sg_init_table(cipher, 2);

		sg_set_buf(cipher, iv, ivsize);

		authenc_chain(cipher, dst, vdst == iv + ivsize);

		dst = cipher;

	}



	cryptlen = req->cryptlen + ivsize;

	hash = crypto_authenc_hash(req, flags, cipher, cryptlen);

	hash = crypto_authenc_hash(req, flags, dst, cryptlen);

	if (IS_ERR(hash))

		return PTR_ERR(hash);



	scatterwalk_map_and_copy(hash, cipher, cryptlen,

	scatterwalk_map_and_copy(hash, dst, cryptlen,

				 crypto_aead_authsize(authenc), 1);

	return 0;

}
@@ -285,11 +288,14 @@ static int crypto_authenc_iverify(struct aead_request *req, u8 *iv, 
	srcp = sg_page(src);

	vsrc = PageHighMem(srcp) ? NULL : page_address(srcp) + src->offset;



	if (ivsize) {

		sg_init_table(cipher, 2);

		sg_set_buf(cipher, iv, ivsize);

		authenc_chain(cipher, src, vsrc == iv + ivsize);

		src = cipher;

	}



	return crypto_authenc_verify(req, cipher, cryptlen + ivsize);

	return crypto_authenc_verify(req, src, cryptlen + ivsize);

}



static int crypto_authenc_decrypt(struct aead_request *req)

crypto/blkcipher.c

+1 −1
Original line number Diff line number Diff line
@@ -124,6 +124,7 @@ int blkcipher_walk_done(struct blkcipher_desc *desc, 
	scatterwalk_done(&walk->in, 0, nbytes);

	scatterwalk_done(&walk->out, 1, nbytes);



err:

	walk->total = nbytes;

	walk->nbytes = nbytes;
@@ -132,7 +133,6 @@ int blkcipher_walk_done(struct blkcipher_desc *desc, 
		return blkcipher_walk_next(desc, walk);

	}



err:

	if (walk->iv != desc->info)

		memcpy(desc->info, walk->iv, crypto_blkcipher_ivsize(tfm));

	if (walk->buffer != walk->page)

crypto/ccm.c

+2 −0
Original line number Diff line number Diff line
@@ -266,6 +266,8 @@ static int crypto_ccm_auth(struct aead_request *req, struct scatterlist *plain, 
	if (assoclen) {

		pctx->ilen = format_adata(idata, assoclen);

		get_data_to_compute(cipher, pctx, req->assoc, req->assoclen);

	} else {

		pctx->ilen = 0;

	}



	/* compute plaintext into mac */