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crypto: inside-secure - ecb(des3_ede) and cbc(des3_ede) support 

This patch adds support for two new algorithms in the Inside Secure
SafeXcel cryptographic engine driver: ecb(des3_ede) and cbc(des3_ede).

Signed-off-by: Ofer Heifetz <oferh@marvell.com>
Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
hifive-unleashed-5.1
Ofer Heifetz 2018-06-28 17:21:56 +02:00 committed by Herbert Xu
parent a7dea8c0ff
commit 6246987932
3 changed files with 120 additions and 0 deletions
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3
drivers/crypto/inside-secure/safexcel.c
View File

@ -406,6 +406,7 @@ static int safexcel_hw_init(struct safexcel_crypto_priv *priv)
val |= EIP197_PROTOCOL_ENCRYPT_ONLY | EIP197_PROTOCOL_HASH_ONLY;
val |= EIP197_PROTOCOL_ENCRYPT_HASH | EIP197_PROTOCOL_HASH_DECRYPT;
val |= EIP197_ALG_DES_ECB | EIP197_ALG_DES_CBC;
val |= EIP197_ALG_3DES_ECB | EIP197_ALG_3DES_CBC;
val |= EIP197_ALG_AES_ECB | EIP197_ALG_AES_CBC;
val |= EIP197_ALG_MD5 | EIP197_ALG_HMAC_MD5;
val |= EIP197_ALG_SHA1 | EIP197_ALG_HMAC_SHA1;
@ -843,6 +844,8 @@ static int safexcel_request_ring_irq(struct platform_device *pdev, const char *n
static struct safexcel_alg_template *safexcel_algs[] = {
&safexcel_alg_ecb_des,
&safexcel_alg_cbc_des,
&safexcel_alg_ecb_des3_ede,
&safexcel_alg_cbc_des3_ede,
&safexcel_alg_ecb_aes,
&safexcel_alg_cbc_aes,
&safexcel_alg_md5,

3
drivers/crypto/inside-secure/safexcel.h
View File

@ -312,6 +312,7 @@ struct safexcel_context_record {
#define CONTEXT_CONTROL_SIZE(n) ((n) << 8)
#define CONTEXT_CONTROL_KEY_EN BIT(16)
#define CONTEXT_CONTROL_CRYPTO_ALG_DES (0x0 << 17)
#define CONTEXT_CONTROL_CRYPTO_ALG_3DES (0x2 << 17)
#define CONTEXT_CONTROL_CRYPTO_ALG_AES128 (0x5 << 17)
#define CONTEXT_CONTROL_CRYPTO_ALG_AES192 (0x6 << 17)
#define CONTEXT_CONTROL_CRYPTO_ALG_AES256 (0x7 << 17)
@ -694,6 +695,8 @@ int safexcel_hmac_setkey(const char *alg, const u8 *key, unsigned int keylen,
/* available algorithms */
extern struct safexcel_alg_template safexcel_alg_ecb_des;
extern struct safexcel_alg_template safexcel_alg_cbc_des;
extern struct safexcel_alg_template safexcel_alg_ecb_des3_ede;
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_md5;

114
drivers/crypto/inside-secure/safexcel_cipher.c
View File

@ -30,6 +30,7 @@ enum safexcel_cipher_direction {
enum safexcel_cipher_alg {
SAFEXCEL_DES,
SAFEXCEL_3DES,
SAFEXCEL_AES,
};
@ -70,6 +71,12 @@ static void safexcel_skcipher_token(struct safexcel_cipher_ctx *ctx, u8 *iv,
memcpy(cdesc->control_data.token, iv, DES_BLOCK_SIZE);
cdesc->control_data.options |= EIP197_OPTION_2_TOKEN_IV_CMD;
break;
case SAFEXCEL_3DES:
offset = DES3_EDE_BLOCK_SIZE / sizeof(u32);
memcpy(cdesc->control_data.token, iv, DES3_EDE_BLOCK_SIZE);
cdesc->control_data.options |= EIP197_OPTION_2_TOKEN_IV_CMD;
break;
case SAFEXCEL_AES:
offset = AES_BLOCK_SIZE / sizeof(u32);
memcpy(cdesc->control_data.token, iv, AES_BLOCK_SIZE);
@ -287,6 +294,8 @@ static int safexcel_context_control(struct safexcel_cipher_ctx *ctx,
if (ctx->alg == SAFEXCEL_DES) {
cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_DES;
} else if (ctx->alg == SAFEXCEL_3DES) {
cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_3DES;
} else if (ctx->alg == SAFEXCEL_AES) {
switch (ctx->key_len) {
case AES_KEYSIZE_128:
@ -1030,6 +1039,111 @@ struct safexcel_alg_template safexcel_alg_ecb_des = {
},
},
};
static int safexcel_cbc_des3_ede_encrypt(struct skcipher_request *req)
{
return safexcel_queue_req(&req->base, skcipher_request_ctx(req),
SAFEXCEL_ENCRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC,
SAFEXCEL_3DES);
}
static int safexcel_cbc_des3_ede_decrypt(struct skcipher_request *req)
{
return safexcel_queue_req(&req->base, skcipher_request_ctx(req),
SAFEXCEL_DECRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC,
SAFEXCEL_3DES);
}
static int safexcel_des3_ede_setkey(struct crypto_skcipher *ctfm,
const u8 *key, unsigned int len)
{
struct crypto_tfm *tfm = crypto_skcipher_tfm(ctfm);
struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
if (len != DES3_EDE_KEY_SIZE) {
crypto_skcipher_set_flags(ctfm, CRYPTO_TFM_RES_BAD_KEY_LEN);
return -EINVAL;
}
/* if context exits and key changed, need to invalidate it */
if (ctx->base.ctxr_dma) {
if (memcmp(ctx->key, key, len))
ctx->base.needs_inv = true;
}
memcpy(ctx->key, key, len);
ctx->key_len = len;
return 0;
}
struct safexcel_alg_template safexcel_alg_cbc_des3_ede = {
.type = SAFEXCEL_ALG_TYPE_SKCIPHER,
.engines = EIP97IES | EIP197B | EIP197D,
.alg.skcipher = {
.setkey = safexcel_des3_ede_setkey,
.encrypt = safexcel_cbc_des3_ede_encrypt,
.decrypt = safexcel_cbc_des3_ede_decrypt,
.min_keysize = DES3_EDE_KEY_SIZE,
.max_keysize = DES3_EDE_KEY_SIZE,
.ivsize = DES3_EDE_BLOCK_SIZE,
.base = {
.cra_name = "cbc(des3_ede)",
.cra_driver_name = "safexcel-cbc-des3_ede",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_ASYNC |
CRYPTO_ALG_KERN_DRIVER_ONLY,
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct safexcel_cipher_ctx),
.cra_alignmask = 0,
.cra_init = safexcel_skcipher_cra_init,
.cra_exit = safexcel_skcipher_cra_exit,
.cra_module = THIS_MODULE,
},
},
};
static int safexcel_ecb_des3_ede_encrypt(struct skcipher_request *req)
{
return safexcel_queue_req(&req->base, skcipher_request_ctx(req),
SAFEXCEL_ENCRYPT, CONTEXT_CONTROL_CRYPTO_MODE_ECB,
SAFEXCEL_3DES);
}
static int safexcel_ecb_des3_ede_decrypt(struct skcipher_request *req)
{
return safexcel_queue_req(&req->base, skcipher_request_ctx(req),
SAFEXCEL_DECRYPT, CONTEXT_CONTROL_CRYPTO_MODE_ECB,
SAFEXCEL_3DES);
}
struct safexcel_alg_template safexcel_alg_ecb_des3_ede = {
.type = SAFEXCEL_ALG_TYPE_SKCIPHER,
.engines = EIP97IES | EIP197B | EIP197D,
.alg.skcipher = {
.setkey = safexcel_des3_ede_setkey,
.encrypt = safexcel_ecb_des3_ede_encrypt,
.decrypt = safexcel_ecb_des3_ede_decrypt,
.min_keysize = DES3_EDE_KEY_SIZE,
.max_keysize = DES3_EDE_KEY_SIZE,
.ivsize = DES3_EDE_BLOCK_SIZE,
.base = {
.cra_name = "ecb(des3_ede)",
.cra_driver_name = "safexcel-ecb-des3_ede",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_ASYNC |
CRYPTO_ALG_KERN_DRIVER_ONLY,
.cra_blocksize = DES3_EDE_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct safexcel_cipher_ctx),
.cra_alignmask = 0,
.cra_init = safexcel_skcipher_cra_init,
.cra_exit = safexcel_skcipher_cra_exit,
.cra_module = THIS_MODULE,
},
},
};
static int safexcel_aead_encrypt(struct aead_request *req)
{
struct safexcel_cipher_req *creq = aead_request_ctx(req);