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| author | Pascal van Leeuwen <pascalvanl@gmail.com> | 2019-08-30 09:52:32 +0200 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2019-09-05 14:37:29 +1000 |
| commit | 50485dfb6c60f63e1a42943a910c0ab670c92a25 (patch) | |
| tree | 3c8749a88e7ed14afb6417bad429a7f932e61833 /drivers/crypto | |
| parent | 48e97afa41784c4b94e01f8605179bd49e759d03 (diff) | |
| download | linux-50485dfb6c60f63e1a42943a910c0ab670c92a25.tar.gz | |
crypto: inside-secure - Added AES-OFB support
This patch adds support for AES in output feedback mode (AES-OFB). Signed-off-by: Pascal van Leeuwen <pvanleeuwen@verimatrix.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Diffstat (limited to 'drivers/crypto')
| -rw-r--r-- | drivers/crypto/inside-secure/safexcel.c | 1 | ||||
| -rw-r--r-- | drivers/crypto/inside-secure/safexcel.h | 2 | ||||
| -rw-r--r-- | drivers/crypto/inside-secure/safexcel_cipher.c | 36 |
3 files changed, 39 insertions, 0 deletions
diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c index 3196cb30e1b5..5ad4feb07b6f 100644 --- a/drivers/crypto/inside-secure/safexcel.c +++ b/drivers/crypto/inside-secure/safexcel.c @@ -982,6 +982,7 @@ static struct safexcel_alg_template *safexcel_algs[] = { &safexcel_alg_ecb_aes, &safexcel_alg_cbc_aes, &safexcel_alg_cfb_aes, + &safexcel_alg_ofb_aes, &safexcel_alg_ctr_aes, &safexcel_alg_md5, &safexcel_alg_sha1, diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h index 6f781ed1f0a5..0eb344534f36 100644 --- a/drivers/crypto/inside-secure/safexcel.h +++ b/drivers/crypto/inside-secure/safexcel.h @@ -336,6 +336,7 @@ struct safexcel_context_record { /* control1 */ #define CONTEXT_CONTROL_CRYPTO_MODE_ECB (0 << 0) #define CONTEXT_CONTROL_CRYPTO_MODE_CBC (1 << 0) +#define CONTEXT_CONTROL_CRYPTO_MODE_OFB (4 << 0) #define CONTEXT_CONTROL_CRYPTO_MODE_CFB (5 << 0) #define CONTEXT_CONTROL_CRYPTO_MODE_CTR_LOAD (6 << 0) #define CONTEXT_CONTROL_CRYPTO_MODE_XTS (7 << 0) @@ -769,6 +770,7 @@ extern struct safexcel_alg_template safexcel_alg_cbc_des3_ede; extern struct safexcel_alg_template safexcel_alg_ecb_aes; extern struct safexcel_alg_template safexcel_alg_cbc_aes; extern struct safexcel_alg_template safexcel_alg_cfb_aes; +extern struct safexcel_alg_template safexcel_alg_ofb_aes; extern struct safexcel_alg_template safexcel_alg_ctr_aes; extern struct safexcel_alg_template safexcel_alg_md5; extern struct safexcel_alg_template safexcel_alg_sha1; diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c index 4e06c61f9ff9..7a1e78518871 100644 --- a/drivers/crypto/inside-secure/safexcel_cipher.c +++ b/drivers/crypto/inside-secure/safexcel_cipher.c @@ -1172,6 +1172,42 @@ struct safexcel_alg_template safexcel_alg_cfb_aes = { }, }; +static int safexcel_skcipher_aes_ofb_cra_init(struct crypto_tfm *tfm) +{ + struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm); + + safexcel_skcipher_cra_init(tfm); + ctx->alg = SAFEXCEL_AES; + ctx->mode = CONTEXT_CONTROL_CRYPTO_MODE_OFB; + return 0; +} + +struct safexcel_alg_template safexcel_alg_ofb_aes = { + .type = SAFEXCEL_ALG_TYPE_SKCIPHER, + .algo_mask = SAFEXCEL_ALG_AES | SAFEXCEL_ALG_AES_XFB, + .alg.skcipher = { + .setkey = safexcel_skcipher_aes_setkey, + .encrypt = safexcel_encrypt, + .decrypt = safexcel_decrypt, + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .ivsize = AES_BLOCK_SIZE, + .base = { + .cra_name = "ofb(aes)", + .cra_driver_name = "safexcel-ofb-aes", + .cra_priority = SAFEXCEL_CRA_PRIORITY, + .cra_flags = CRYPTO_ALG_ASYNC | + CRYPTO_ALG_KERN_DRIVER_ONLY, + .cra_blocksize = 1, + .cra_ctxsize = sizeof(struct safexcel_cipher_ctx), + .cra_alignmask = 0, + .cra_init = safexcel_skcipher_aes_ofb_cra_init, + .cra_exit = safexcel_skcipher_cra_exit, + .cra_module = THIS_MODULE, + }, + }, +}; + static int safexcel_skcipher_aesctr_setkey(struct crypto_skcipher *ctfm, const u8 *key, unsigned int len) { |