From 48e97afa41784c4b94e01f8605179bd49e759d03 Mon Sep 17 00:00:00 2001 From: Pascal van Leeuwen Date: Fri, 30 Aug 2019 09:52:31 +0200 Subject: crypto: inside-secure - Added AES-CFB support This patch adds support for AES in 128 bit cipher feedback mode (AES-CFB). Signed-off-by: Pascal van Leeuwen Signed-off-by: Herbert Xu --- drivers/crypto/inside-secure/safexcel_cipher.c | 36 ++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'drivers/crypto/inside-secure/safexcel_cipher.c') diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c index 7091b6086e2e..4e06c61f9ff9 100644 --- a/drivers/crypto/inside-secure/safexcel_cipher.c +++ b/drivers/crypto/inside-secure/safexcel_cipher.c @@ -1136,6 +1136,42 @@ struct safexcel_alg_template safexcel_alg_cbc_aes = { }, }; +static int safexcel_skcipher_aes_cfb_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_CFB; + return 0; +} + +struct safexcel_alg_template safexcel_alg_cfb_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 = "cfb(aes)", + .cra_driver_name = "safexcel-cfb-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_cfb_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) { -- cgit v1.2.3