From: Herbert Xu Subject: [PATCH 6/7] [CRYPTO] doc: Update documentation for hash and me Date: Tue, 22 Aug 2006 00:27:56 +1000 Message-ID: References: <20060821142407.GA26988@gondor.apana.org.au> Return-path: To: Linux Crypto Mailing List , "David S. Miller" , netdev@vger.kernel.org Sender: netdev-owner@vger.kernel.org List-Id: linux-crypto.vger.kernel.org [CRYPTO] doc: Update documentation for hash and me This patch updates the documentation to reflect the switch from digest to hash. It also replaces notes about emailing James Morris to refer to me instead. Signed-off-by: Herbert Xu --- Documentation/crypto/api-intro.txt | 36 ++++++++++++++++++++++-------------- 1 files changed, 22 insertions(+), 14 deletions(-) diff --git a/Documentation/crypto/api-intro.txt b/Documentation/crypto/api-intro.txt --- a/Documentation/crypto/api-intro.txt +++ b/Documentation/crypto/api-intro.txt @@ -19,15 +19,14 @@ At the lowest level are algorithms, whic API. 'Transforms' are user-instantiated objects, which maintain state, handle all -of the implementation logic (e.g. manipulating page vectors), provide an -abstraction to the underlying algorithms, and handle common logical -operations (e.g. cipher modes, HMAC for digests). However, at the user +of the implementation logic (e.g. manipulating page vectors) and provide an +abstraction to the underlying algorithms. However, at the user level they are very simple. Conceptually, the API layering looks like this: [transform api] (user interface) - [transform ops] (per-type logic glue e.g. cipher.c, digest.c) + [transform ops] (per-type logic glue e.g. cipher.c, compress.c) [algorithm api] (for registering algorithms) The idea is to make the user interface and algorithm registration API @@ -44,22 +43,27 @@ under development. Here's an example of how to use the API: #include + #include + #include struct scatterlist sg[2]; char result[128]; - struct crypto_tfm *tfm; + struct crypto_hash *tfm; + struct hash_desc desc; - tfm = crypto_alloc_tfm("md5", 0); - if (tfm == NULL) + tfm = crypto_alloc_hash("md5", 0, CRYPTO_ALG_ASYNC); + if (IS_ERR(tfm)) fail(); /* ... set up the scatterlists ... */ + + desc.tfm = tfm; + desc.flags = 0; - crypto_digest_init(tfm); - crypto_digest_update(tfm, &sg, 2); - crypto_digest_final(tfm, result); + if (crypto_hash_digest(&desc, &sg, 2, result)) + fail(); - crypto_free_tfm(tfm); + crypto_free_hash(tfm); Many real examples are available in the regression test module (tcrypt.c). @@ -126,7 +130,7 @@ might already be working on. BUGS Send bug reports to: -James Morris +Herbert Xu Cc: David S. Miller @@ -134,13 +138,14 @@ FURTHER INFORMATION For further patches and various updates, including the current TODO list, see: -http://samba.org/~jamesm/crypto/ +http://gondor.apana.org.au/~herbert/crypto/ AUTHORS James Morris David S. Miller +Herbert Xu CREDITS @@ -238,8 +243,11 @@ Anubis algorithm contributors: Tiger algorithm contributors: Aaron Grothe +VIA PadLock contributors: + Michal Ludvig + Generic scatterwalk code by Adam J. Richter Please send any credits updates or corrections to: -James Morris +Herbert Xu