diff options
| author | Horia Geantă <horia.geanta@nxp.com> | 2016-11-22 14:44:10 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2016-11-28 14:23:23 +0100 |
| commit | 6655cb8e56691fab3291c83d2afd6f1fd0776ecf (patch) | |
| tree | 6105d8bbd7edb83bc13152ffd2f2e817aa36e07a /drivers/crypto/caam/caamalg.c | |
| parent | crypto: caam - refactor encryption descriptors generation (diff) | |
| download | linux-6655cb8e56691fab3291c83d2afd6f1fd0776ecf.tar.xz linux-6655cb8e56691fab3291c83d2afd6f1fd0776ecf.zip | |
crypto: caam - consolidate split key length computation
Move split key length and padded length computation from caamalg.c
and caamhash.c to key_gen.c.
Signed-off-by: Horia Geantă <horia.geanta@nxp.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto/caam/caamalg.c')
| -rw-r--r-- | drivers/crypto/caam/caamalg.c | 24 |
1 files changed, 3 insertions, 21 deletions
diff --git a/drivers/crypto/caam/caamalg.c b/drivers/crypto/caam/caamalg.c index 78b0b7c17205..767ffaea9649 100644 --- a/drivers/crypto/caam/caamalg.c +++ b/drivers/crypto/caam/caamalg.c @@ -586,18 +586,9 @@ static int rfc4543_setauthsize(struct crypto_aead *authenc, return 0; } -static u32 gen_split_aead_key(struct caam_ctx *ctx, const u8 *key_in, - u32 authkeylen) -{ - return gen_split_key(ctx->jrdev, ctx->key, &ctx->adata, key_in, - authkeylen); -} - static int aead_setkey(struct crypto_aead *aead, const u8 *key, unsigned int keylen) { - /* Sizes for MDHA pads (*not* keys): MD5, SHA1, 224, 256, 384, 512 */ - static const u8 mdpadlen[] = { 16, 20, 32, 32, 64, 64 }; struct caam_ctx *ctx = crypto_aead_ctx(aead); struct device *jrdev = ctx->jrdev; struct crypto_authenc_keys keys; @@ -606,26 +597,17 @@ static int aead_setkey(struct crypto_aead *aead, if (crypto_authenc_extractkeys(&keys, key, keylen) != 0) goto badkey; - /* Pick class 2 key length from algorithm submask */ - ctx->adata.keylen = mdpadlen[(ctx->adata.algtype & - OP_ALG_ALGSEL_SUBMASK) >> - OP_ALG_ALGSEL_SHIFT] * 2; - ctx->adata.keylen_pad = ALIGN(ctx->adata.keylen, 16); - - if (ctx->adata.keylen_pad + keys.enckeylen > CAAM_MAX_KEY_SIZE) - goto badkey; - #ifdef DEBUG printk(KERN_ERR "keylen %d enckeylen %d authkeylen %d\n", keys.authkeylen + keys.enckeylen, keys.enckeylen, keys.authkeylen); - printk(KERN_ERR "split_key_len %d split_key_pad_len %d\n", - ctx->adata.keylen, ctx->adata.keylen_pad); print_hex_dump(KERN_ERR, "key in @"__stringify(__LINE__)": ", DUMP_PREFIX_ADDRESS, 16, 4, key, keylen, 1); #endif - ret = gen_split_aead_key(ctx, keys.authkey, keys.authkeylen); + ret = gen_split_key(ctx->jrdev, ctx->key, &ctx->adata, keys.authkey, + keys.authkeylen, CAAM_MAX_KEY_SIZE - + keys.enckeylen); if (ret) { goto badkey; } |