This patch adds the authenc(hmac(sha224),cbc(aes)) AEAD algorithm
support to the Inside Secure SafeXcel driver.
Signed-off-by: Antoine Tenart <antoine.tenart@xxxxxxxxxxx>
---
drivers/crypto/inside-secure/safexcel.c | 1 +
drivers/crypto/inside-secure/safexcel.h | 1 +
.../crypto/inside-secure/safexcel_cipher.c | 50 ++++++++++++++++++-
3 files changed, 50 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
index 8c963ef0953a..0f061c3757e9 100644
--- a/drivers/crypto/inside-secure/safexcel.c
+++ b/drivers/crypto/inside-secure/safexcel.c
@@ -793,6 +793,7 @@ static struct safexcel_alg_template *safexcel_algs[] = {
&safexcel_alg_hmac_sha1,
&safexcel_alg_hmac_sha224,
&safexcel_alg_hmac_sha256,
+ &safexcel_alg_authenc_hmac_sha224_cbc_aes,
&safexcel_alg_authenc_hmac_sha256_cbc_aes,
};
diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h
index ae113c14caea..c2e953f60447 100644
--- a/drivers/crypto/inside-secure/safexcel.h
+++ b/drivers/crypto/inside-secure/safexcel.h
@@ -668,6 +668,7 @@ extern struct safexcel_alg_template safexcel_alg_sha256;
extern struct safexcel_alg_template safexcel_alg_hmac_sha1;
extern struct safexcel_alg_template safexcel_alg_hmac_sha224;
extern struct safexcel_alg_template safexcel_alg_hmac_sha256;
+extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha224_cbc_aes;
extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha256_cbc_aes;
#endif
diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c
index 51ab448f664e..9250fb205cf2 100644
--- a/drivers/crypto/inside-secure/safexcel_cipher.c
+++ b/drivers/crypto/inside-secure/safexcel_cipher.c
@@ -184,9 +184,21 @@ static int safexcel_aead_aes_setkey(struct crypto_aead *ctfm, const u8 *key,
ctx->base.needs_inv = true;
/* Auth key */
- if (safexcel_hmac_setkey("safexcel-sha256", keys.authkey,
- keys.authkeylen, &istate, &ostate))
+ switch (ctx->alg) {
+ case CONTEXT_CONTROL_CRYPTO_ALG_SHA224:
+ if (safexcel_hmac_setkey("safexcel-sha224", keys.authkey,
+ keys.authkeylen, &istate, &ostate))
+ goto badkey;
+ break;
+ case CONTEXT_CONTROL_CRYPTO_ALG_SHA256:
+ if (safexcel_hmac_setkey("safexcel-sha256", keys.authkey,
+ keys.authkeylen, &istate, &ostate))
+ goto badkey;
+ break;
+ default:
+ dev_err(priv->dev, "aead: unsupported hash algorithm\n");
goto badkey;
+ }
crypto_aead_set_flags(ctfm, crypto_aead_get_flags(ctfm) &
CRYPTO_TFM_RES_MASK);
@@ -937,3 +949,37 @@ struct safexcel_alg_template safexcel_alg_authenc_hmac_sha256_cbc_aes = {
},
},
};
+
+static int safexcel_aead_sha224_cra_init(struct crypto_tfm *tfm)
+{
+ struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+
+ safexcel_aead_cra_init(tfm);
+ ctx->alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA224;
+ ctx->state_sz = SHA256_DIGEST_SIZE;
+ return 0;
+}
+
+struct safexcel_alg_template safexcel_alg_authenc_hmac_sha224_cbc_aes = {
+ .type = SAFEXCEL_ALG_TYPE_AEAD,
+ .alg.aead = {
+ .setkey = safexcel_aead_aes_setkey,
+ .encrypt = safexcel_aead_encrypt,
+ .decrypt = safexcel_aead_decrypt,
+ .ivsize = AES_BLOCK_SIZE,
+ .maxauthsize = SHA224_DIGEST_SIZE,
+ .base = {
+ .cra_name = "authenc(hmac(sha224),cbc(aes))",
+ .cra_driver_name = "safexcel-authenc-hmac-sha224-cbc-aes",
+ .cra_priority = 300,
+ .cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC |
+ CRYPTO_ALG_KERN_DRIVER_ONLY,
+ .cra_blocksize = AES_BLOCK_SIZE,
+ .cra_ctxsize = sizeof(struct safexcel_cipher_ctx),
+ .cra_alignmask = 0,
+ .cra_init = safexcel_aead_sha224_cra_init,
+ .cra_exit = safexcel_aead_cra_exit,
+ .cra_module = THIS_MODULE,
+ },
+ },
+};
--
2.17.0
