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authorLinus Torvalds <torvalds@linux-foundation.org>2017-07-05 21:22:23 +0200
committerLinus Torvalds <torvalds@linux-foundation.org>2017-07-05 21:22:23 +0200
commit8ad06e56dcbc1984ef0ff8f6e3c19982c5809f73 (patch)
tree74bc746a4f18eeddfc085b76c776ddcf2c798cfa /Documentation/crypto
parentMerge tag 'gcc-plugins-v4.13-rc1' of git://git.kernel.org/pub/scm/linux/kerne... (diff)
parentMerge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 (diff)
downloadlinux-8ad06e56dcbc1984ef0ff8f6e3c19982c5809f73.tar.xz
linux-8ad06e56dcbc1984ef0ff8f6e3c19982c5809f73.zip
Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6
Pull crypto updates from Herbert Xu: "Algorithms: - add private key generation to ecdh Drivers: - add generic gcm(aes) to aesni-intel - add SafeXcel EIP197 crypto engine driver - add ecb(aes), cfb(aes) and ecb(des3_ede) to cavium - add support for CNN55XX adapters in cavium - add ctr mode to chcr - add support for gcm(aes) to omap" * 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6: (140 commits) crypto: testmgr - Reenable sha1/aes in FIPS mode crypto: ccp - Release locks before returning crypto: cavium/nitrox - dma_mapping_error() returns bool crypto: doc - fix typo in docs Documentation/bindings: Document the SafeXel cryptographic engine driver crypto: caam - fix gfp allocation flags (part II) crypto: caam - fix gfp allocation flags (part I) crypto: drbg - Fixes panic in wait_for_completion call crypto: caam - make of_device_ids const. crypto: vmx - remove unnecessary check crypto: n2 - make of_device_ids const crypto: inside-secure - use the base_end pointer in ring rollback crypto: inside-secure - increase the batch size crypto: inside-secure - only dequeue when needed crypto: inside-secure - get the backlog before dequeueing the request crypto: inside-secure - stop requeueing failed requests crypto: inside-secure - use one queue per hw ring crypto: inside-secure - update the context and request later crypto: inside-secure - align the cipher and hash send functions crypto: inside-secure - optimize DSE bufferability control ...
Diffstat (limited to 'Documentation/crypto')
-rw-r--r--Documentation/crypto/api-samples.rst38
-rw-r--r--Documentation/crypto/userspace-if.rst2
2 files changed, 29 insertions, 11 deletions
diff --git a/Documentation/crypto/api-samples.rst b/Documentation/crypto/api-samples.rst
index d021fd96a76d..2531948db89f 100644
--- a/Documentation/crypto/api-samples.rst
+++ b/Documentation/crypto/api-samples.rst
@@ -155,9 +155,9 @@ Code Example For Use of Operational State Memory With SHASH
char ctx[];
};
- static struct sdesc init_sdesc(struct crypto_shash *alg)
+ static struct sdesc *init_sdesc(struct crypto_shash *alg)
{
- struct sdesc sdesc;
+ struct sdesc *sdesc;
int size;
size = sizeof(struct shash_desc) + crypto_shash_descsize(alg);
@@ -169,15 +169,16 @@ Code Example For Use of Operational State Memory With SHASH
return sdesc;
}
- static int calc_hash(struct crypto_shashalg,
- const unsigned chardata, unsigned int datalen,
- unsigned chardigest) {
- struct sdesc sdesc;
+ static int calc_hash(struct crypto_shash *alg,
+ const unsigned char *data, unsigned int datalen,
+ unsigned char *digest)
+ {
+ struct sdesc *sdesc;
int ret;
sdesc = init_sdesc(alg);
if (IS_ERR(sdesc)) {
- pr_info("trusted_key: can't alloc %s\n", hash_alg);
+ pr_info("can't alloc sdesc\n");
return PTR_ERR(sdesc);
}
@@ -186,6 +187,23 @@ Code Example For Use of Operational State Memory With SHASH
return ret;
}
+ static int test_hash(const unsigned char *data, unsigned int datalen,
+ unsigned char *digest)
+ {
+ struct crypto_shash *alg;
+ char *hash_alg_name = "sha1-padlock-nano";
+ int ret;
+
+ alg = crypto_alloc_shash(hash_alg_name, CRYPTO_ALG_TYPE_SHASH, 0);
+ if (IS_ERR(alg)) {
+ pr_info("can't alloc alg %s\n", hash_alg_name);
+ return PTR_ERR(alg);
+ }
+ ret = calc_hash(alg, data, datalen, digest);
+ crypto_free_shash(alg);
+ return ret;
+ }
+
Code Example For Random Number Generator Usage
----------------------------------------------
@@ -195,8 +213,8 @@ Code Example For Random Number Generator Usage
static int get_random_numbers(u8 *buf, unsigned int len)
{
- struct crypto_rngrng = NULL;
- chardrbg = "drbg_nopr_sha256"; /* Hash DRBG with SHA-256, no PR */
+ struct crypto_rng *rng = NULL;
+ char *drbg = "drbg_nopr_sha256"; /* Hash DRBG with SHA-256, no PR */
int ret;
if (!buf || !len) {
@@ -207,7 +225,7 @@ Code Example For Random Number Generator Usage
rng = crypto_alloc_rng(drbg, 0, 0);
if (IS_ERR(rng)) {
pr_debug("could not allocate RNG handle for %s\n", drbg);
- return -PTR_ERR(rng);
+ return PTR_ERR(rng);
}
ret = crypto_rng_get_bytes(rng, buf, len);
diff --git a/Documentation/crypto/userspace-if.rst b/Documentation/crypto/userspace-if.rst
index de5a72e32bc9..ff86befa61e0 100644
--- a/Documentation/crypto/userspace-if.rst
+++ b/Documentation/crypto/userspace-if.rst
@@ -327,7 +327,7 @@ boundary. Non-aligned data can be used as well, but may require more
operations of the kernel which would defeat the speed gains obtained
from the zero-copy interface.
-The system-interent limit for the size of one zero-copy operation is 16
+The system-inherent limit for the size of one zero-copy operation is 16
pages. If more data is to be sent to AF_ALG, user space must slice the
input into segments with a maximum size of 16 pages.