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author | 2015-08-04 12:17:53 -0700 | |
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committer | 2015-08-04 15:44:42 -0700 | |
commit | 9ca8dbcc65cfc63d6f5ef3312a33184e1d726e00 (patch) | |
tree | 1c9cafbcd35f783a87880a10f85d1a060db1a563 /kernel/arch/arm/crypto/aes_glue.c | |
parent | 98260f3884f4a202f9ca5eabed40b1354c489b29 (diff) |
Add the rt linux 4.1.3-rt3 as base
Import the rt linux 4.1.3-rt3 as OPNFV kvm base.
It's from git://git.kernel.org/pub/scm/linux/kernel/git/rt/linux-rt-devel.git linux-4.1.y-rt and
the base is:
commit 0917f823c59692d751951bf5ea699a2d1e2f26a2
Author: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Date: Sat Jul 25 12:13:34 2015 +0200
Prepare v4.1.3-rt3
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
We lose all the git history this way and it's not good. We
should apply another opnfv project repo in future.
Change-Id: I87543d81c9df70d99c5001fbdf646b202c19f423
Signed-off-by: Yunhong Jiang <yunhong.jiang@intel.com>
Diffstat (limited to 'kernel/arch/arm/crypto/aes_glue.c')
-rw-r--r-- | kernel/arch/arm/crypto/aes_glue.c | 98 |
1 files changed, 98 insertions, 0 deletions
diff --git a/kernel/arch/arm/crypto/aes_glue.c b/kernel/arch/arm/crypto/aes_glue.c new file mode 100644 index 000000000..0409b8f89 --- /dev/null +++ b/kernel/arch/arm/crypto/aes_glue.c @@ -0,0 +1,98 @@ +/* + * Glue Code for the asm optimized version of the AES Cipher Algorithm + */ + +#include <linux/module.h> +#include <linux/crypto.h> +#include <crypto/aes.h> + +#include "aes_glue.h" + +EXPORT_SYMBOL(AES_encrypt); +EXPORT_SYMBOL(AES_decrypt); +EXPORT_SYMBOL(private_AES_set_encrypt_key); +EXPORT_SYMBOL(private_AES_set_decrypt_key); + +static void aes_encrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) +{ + struct AES_CTX *ctx = crypto_tfm_ctx(tfm); + AES_encrypt(src, dst, &ctx->enc_key); +} + +static void aes_decrypt(struct crypto_tfm *tfm, u8 *dst, const u8 *src) +{ + struct AES_CTX *ctx = crypto_tfm_ctx(tfm); + AES_decrypt(src, dst, &ctx->dec_key); +} + +static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key, + unsigned int key_len) +{ + struct AES_CTX *ctx = crypto_tfm_ctx(tfm); + + switch (key_len) { + case AES_KEYSIZE_128: + key_len = 128; + break; + case AES_KEYSIZE_192: + key_len = 192; + break; + case AES_KEYSIZE_256: + key_len = 256; + break; + default: + tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; + return -EINVAL; + } + + if (private_AES_set_encrypt_key(in_key, key_len, &ctx->enc_key) == -1) { + tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; + return -EINVAL; + } + /* private_AES_set_decrypt_key expects an encryption key as input */ + ctx->dec_key = ctx->enc_key; + if (private_AES_set_decrypt_key(in_key, key_len, &ctx->dec_key) == -1) { + tfm->crt_flags |= CRYPTO_TFM_RES_BAD_KEY_LEN; + return -EINVAL; + } + return 0; +} + +static struct crypto_alg aes_alg = { + .cra_name = "aes", + .cra_driver_name = "aes-asm", + .cra_priority = 200, + .cra_flags = CRYPTO_ALG_TYPE_CIPHER, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct AES_CTX), + .cra_module = THIS_MODULE, + .cra_list = LIST_HEAD_INIT(aes_alg.cra_list), + .cra_u = { + .cipher = { + .cia_min_keysize = AES_MIN_KEY_SIZE, + .cia_max_keysize = AES_MAX_KEY_SIZE, + .cia_setkey = aes_set_key, + .cia_encrypt = aes_encrypt, + .cia_decrypt = aes_decrypt + } + } +}; + +static int __init aes_init(void) +{ + return crypto_register_alg(&aes_alg); +} + +static void __exit aes_fini(void) +{ + crypto_unregister_alg(&aes_alg); +} + +module_init(aes_init); +module_exit(aes_fini); + +MODULE_DESCRIPTION("Rijndael (AES) Cipher Algorithm (ASM)"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS_CRYPTO("aes"); +MODULE_ALIAS_CRYPTO("aes-asm"); +MODULE_AUTHOR("David McCullough <ucdevel@gmail.com>"); |