From: Ofer Heifetz Date: Thu, 28 Jun 2018 15:21:55 +0000 (+0200) Subject: crypto: inside-secure - ecb(des) and cbc(des) support X-Git-Tag: v5.15~8086^2~89 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a7dea8c0ff9f2573b1b34d320670693f979136b8;p=platform%2Fkernel%2Flinux-starfive.git crypto: inside-secure - ecb(des) and cbc(des) support This patch adds support for two algorithms in the Inside Secure SafeXcel cryptographic engine driver: ecb(des) and cbc(des). Signed-off-by: Ofer Heifetz Signed-off-by: Antoine Tenart Signed-off-by: Herbert Xu --- diff --git a/drivers/crypto/Kconfig b/drivers/crypto/Kconfig index 265f987..7c6ba11 100644 --- a/drivers/crypto/Kconfig +++ b/drivers/crypto/Kconfig @@ -689,6 +689,7 @@ config CRYPTO_DEV_SAFEXCEL select CRYPTO_AES select CRYPTO_AUTHENC select CRYPTO_BLKCIPHER + select CRYPTO_DES select CRYPTO_HASH select CRYPTO_HMAC select CRYPTO_MD5 diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c index a52f0da..b2809bb 100644 --- a/drivers/crypto/inside-secure/safexcel.c +++ b/drivers/crypto/inside-secure/safexcel.c @@ -405,6 +405,7 @@ static int safexcel_hw_init(struct safexcel_crypto_priv *priv) val = EIP197_FUNCTION_RSVD; 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_AES_ECB | EIP197_ALG_AES_CBC; val |= EIP197_ALG_MD5 | EIP197_ALG_HMAC_MD5; val |= EIP197_ALG_SHA1 | EIP197_ALG_HMAC_SHA1; @@ -840,6 +841,8 @@ 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_aes, &safexcel_alg_cbc_aes, &safexcel_alg_md5, diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h index 19610b0..31d4fd2 100644 --- a/drivers/crypto/inside-secure/safexcel.h +++ b/drivers/crypto/inside-secure/safexcel.h @@ -311,6 +311,7 @@ struct safexcel_context_record { #define CONTEXT_CONTROL_NO_FINISH_HASH BIT(5) #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_AES128 (0x5 << 17) #define CONTEXT_CONTROL_CRYPTO_ALG_AES192 (0x6 << 17) #define CONTEXT_CONTROL_CRYPTO_ALG_AES256 (0x7 << 17) @@ -470,6 +471,7 @@ struct safexcel_control_data_desc { #define EIP197_OPTION_MAGIC_VALUE BIT(0) #define EIP197_OPTION_64BIT_CTX BIT(1) #define EIP197_OPTION_CTX_CTRL_IN_CMD BIT(8) +#define EIP197_OPTION_2_TOKEN_IV_CMD GENMASK(11, 10) #define EIP197_OPTION_4_TOKEN_IV_CMD GENMASK(11, 9) #define EIP197_TYPE_EXTENDED 0x3 @@ -690,6 +692,8 @@ int safexcel_hmac_setkey(const char *alg, const u8 *key, unsigned int keylen, void *istate, void *ostate); /* 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_aes; extern struct safexcel_alg_template safexcel_alg_cbc_aes; extern struct safexcel_alg_template safexcel_alg_md5; diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c index 7dbe991..e27b689 100644 --- a/drivers/crypto/inside-secure/safexcel_cipher.c +++ b/drivers/crypto/inside-secure/safexcel_cipher.c @@ -15,6 +15,7 @@ #include #include #include +#include #include #include #include @@ -27,18 +28,24 @@ enum safexcel_cipher_direction { SAFEXCEL_DECRYPT, }; +enum safexcel_cipher_alg { + SAFEXCEL_DES, + SAFEXCEL_AES, +}; + struct safexcel_cipher_ctx { struct safexcel_context base; struct safexcel_crypto_priv *priv; u32 mode; + enum safexcel_cipher_alg alg; bool aead; __le32 key[8]; unsigned int key_len; /* All the below is AEAD specific */ - u32 alg; + u32 hash_alg; u32 state_sz; u32 ipad[SHA512_DIGEST_SIZE / sizeof(u32)]; u32 opad[SHA512_DIGEST_SIZE / sizeof(u32)]; @@ -57,10 +64,18 @@ static void safexcel_skcipher_token(struct safexcel_cipher_ctx *ctx, u8 *iv, unsigned offset = 0; if (ctx->mode == CONTEXT_CONTROL_CRYPTO_MODE_CBC) { - offset = AES_BLOCK_SIZE / sizeof(u32); - memcpy(cdesc->control_data.token, iv, AES_BLOCK_SIZE); - - cdesc->control_data.options |= EIP197_OPTION_4_TOKEN_IV_CMD; + switch (ctx->alg) { + case SAFEXCEL_DES: + offset = DES_BLOCK_SIZE / sizeof(u32); + memcpy(cdesc->control_data.token, iv, DES_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); + cdesc->control_data.options |= EIP197_OPTION_4_TOKEN_IV_CMD; + break; + } } token = (struct safexcel_token *)(cdesc->control_data.token + offset); @@ -184,7 +199,7 @@ static int safexcel_aead_aes_setkey(struct crypto_aead *ctfm, const u8 *key, ctx->base.needs_inv = true; /* Auth key */ - switch (ctx->alg) { + switch (ctx->hash_alg) { case CONTEXT_CONTROL_CRYPTO_ALG_SHA1: if (safexcel_hmac_setkey("safexcel-sha1", keys.authkey, keys.authkeylen, &istate, &ostate)) @@ -268,22 +283,26 @@ static int safexcel_context_control(struct safexcel_cipher_ctx *ctx, if (ctx->aead) cdesc->control_data.control0 |= CONTEXT_CONTROL_DIGEST_HMAC | - ctx->alg; - - switch (ctx->key_len) { - case AES_KEYSIZE_128: - cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES128; - break; - case AES_KEYSIZE_192: - cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES192; - break; - case AES_KEYSIZE_256: - cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES256; - break; - default: - dev_err(priv->dev, "aes keysize not supported: %u\n", - ctx->key_len); - return -EINVAL; + ctx->hash_alg; + + if (ctx->alg == SAFEXCEL_DES) { + cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_DES; + } else if (ctx->alg == SAFEXCEL_AES) { + switch (ctx->key_len) { + case AES_KEYSIZE_128: + cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES128; + break; + case AES_KEYSIZE_192: + cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES192; + break; + case AES_KEYSIZE_256: + cdesc->control_data.control0 |= CONTEXT_CONTROL_CRYPTO_ALG_AES256; + break; + default: + dev_err(priv->dev, "aes keysize not supported: %u\n", + ctx->key_len); + return -EINVAL; + } } ctrl_size = ctx->key_len / sizeof(u32); @@ -345,7 +364,7 @@ static int safexcel_handle_req_result(struct safexcel_crypto_priv *priv, int rin return ndesc; } -static int safexcel_aes_send(struct crypto_async_request *base, int ring, +static int safexcel_send_req(struct crypto_async_request *base, int ring, struct safexcel_request *request, struct safexcel_cipher_req *sreq, struct scatterlist *src, struct scatterlist *dst, @@ -618,7 +637,7 @@ static int safexcel_skcipher_send(struct crypto_async_request *async, int ring, ret = safexcel_cipher_send_inv(async, ring, request, commands, results); else - ret = safexcel_aes_send(async, ring, request, sreq, req->src, + ret = safexcel_send_req(async, ring, request, sreq, req->src, req->dst, req->cryptlen, 0, 0, req->iv, commands, results); return ret; @@ -641,7 +660,7 @@ static int safexcel_aead_send(struct crypto_async_request *async, int ring, ret = safexcel_cipher_send_inv(async, ring, request, commands, results); else - ret = safexcel_aes_send(async, ring, request, sreq, req->src, + ret = safexcel_send_req(async, ring, request, sreq, req->src, req->dst, req->cryptlen, req->assoclen, crypto_aead_authsize(tfm), req->iv, commands, results); @@ -712,9 +731,10 @@ static int safexcel_aead_exit_inv(struct crypto_tfm *tfm) return safexcel_cipher_exit_inv(tfm, &req->base, sreq, &result); } -static int safexcel_aes(struct crypto_async_request *base, +static int safexcel_queue_req(struct crypto_async_request *base, struct safexcel_cipher_req *sreq, - enum safexcel_cipher_direction dir, u32 mode) + enum safexcel_cipher_direction dir, u32 mode, + enum safexcel_cipher_alg alg) { struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(base->tfm); struct safexcel_crypto_priv *priv = ctx->priv; @@ -722,6 +742,7 @@ static int safexcel_aes(struct crypto_async_request *base, sreq->needs_inv = false; sreq->direction = dir; + ctx->alg = alg; ctx->mode = mode; if (ctx->base.ctxr) { @@ -752,14 +773,16 @@ static int safexcel_aes(struct crypto_async_request *base, static int safexcel_ecb_aes_encrypt(struct skcipher_request *req) { - return safexcel_aes(&req->base, skcipher_request_ctx(req), - SAFEXCEL_ENCRYPT, CONTEXT_CONTROL_CRYPTO_MODE_ECB); + return safexcel_queue_req(&req->base, skcipher_request_ctx(req), + SAFEXCEL_ENCRYPT, CONTEXT_CONTROL_CRYPTO_MODE_ECB, + SAFEXCEL_AES); } static int safexcel_ecb_aes_decrypt(struct skcipher_request *req) { - return safexcel_aes(&req->base, skcipher_request_ctx(req), - SAFEXCEL_DECRYPT, CONTEXT_CONTROL_CRYPTO_MODE_ECB); + return safexcel_queue_req(&req->base, skcipher_request_ctx(req), + SAFEXCEL_DECRYPT, CONTEXT_CONTROL_CRYPTO_MODE_ECB, + SAFEXCEL_AES); } static int safexcel_skcipher_cra_init(struct crypto_tfm *tfm) @@ -860,14 +883,16 @@ struct safexcel_alg_template safexcel_alg_ecb_aes = { static int safexcel_cbc_aes_encrypt(struct skcipher_request *req) { - return safexcel_aes(&req->base, skcipher_request_ctx(req), - SAFEXCEL_ENCRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC); + return safexcel_queue_req(&req->base, skcipher_request_ctx(req), + SAFEXCEL_ENCRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC, + SAFEXCEL_AES); } static int safexcel_cbc_aes_decrypt(struct skcipher_request *req) { - return safexcel_aes(&req->base, skcipher_request_ctx(req), - SAFEXCEL_DECRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC); + return safexcel_queue_req(&req->base, skcipher_request_ctx(req), + SAFEXCEL_DECRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC, + SAFEXCEL_AES); } struct safexcel_alg_template safexcel_alg_cbc_aes = { @@ -896,20 +921,129 @@ struct safexcel_alg_template safexcel_alg_cbc_aes = { }, }; +static int safexcel_cbc_des_encrypt(struct skcipher_request *req) +{ + return safexcel_queue_req(&req->base, skcipher_request_ctx(req), + SAFEXCEL_ENCRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC, + SAFEXCEL_DES); +} + +static int safexcel_cbc_des_decrypt(struct skcipher_request *req) +{ + return safexcel_queue_req(&req->base, skcipher_request_ctx(req), + SAFEXCEL_DECRYPT, CONTEXT_CONTROL_CRYPTO_MODE_CBC, + SAFEXCEL_DES); +} + +static int safexcel_des_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); + u32 tmp[DES_EXPKEY_WORDS]; + int ret; + + if (len != DES_KEY_SIZE) { + crypto_skcipher_set_flags(ctfm, CRYPTO_TFM_RES_BAD_KEY_LEN); + return -EINVAL; + } + + ret = des_ekey(tmp, key); + if (!ret && (tfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) { + tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY; + 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_des = { + .type = SAFEXCEL_ALG_TYPE_SKCIPHER, + .engines = EIP97IES | EIP197B | EIP197D, + .alg.skcipher = { + .setkey = safexcel_des_setkey, + .encrypt = safexcel_cbc_des_encrypt, + .decrypt = safexcel_cbc_des_decrypt, + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + .ivsize = DES_BLOCK_SIZE, + .base = { + .cra_name = "cbc(des)", + .cra_driver_name = "safexcel-cbc-des", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_ASYNC | + CRYPTO_ALG_KERN_DRIVER_ONLY, + .cra_blocksize = DES_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_des_encrypt(struct skcipher_request *req) +{ + return safexcel_queue_req(&req->base, skcipher_request_ctx(req), + SAFEXCEL_ENCRYPT, CONTEXT_CONTROL_CRYPTO_MODE_ECB, + SAFEXCEL_DES); +} + +static int safexcel_ecb_des_decrypt(struct skcipher_request *req) +{ + return safexcel_queue_req(&req->base, skcipher_request_ctx(req), + SAFEXCEL_DECRYPT, CONTEXT_CONTROL_CRYPTO_MODE_ECB, + SAFEXCEL_DES); +} + +struct safexcel_alg_template safexcel_alg_ecb_des = { + .type = SAFEXCEL_ALG_TYPE_SKCIPHER, + .engines = EIP97IES | EIP197B | EIP197D, + .alg.skcipher = { + .setkey = safexcel_des_setkey, + .encrypt = safexcel_ecb_des_encrypt, + .decrypt = safexcel_ecb_des_decrypt, + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + .ivsize = DES_BLOCK_SIZE, + .base = { + .cra_name = "ecb(des)", + .cra_driver_name = "safexcel-ecb-des", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_SKCIPHER | CRYPTO_ALG_ASYNC | + CRYPTO_ALG_KERN_DRIVER_ONLY, + .cra_blocksize = DES_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); - return safexcel_aes(&req->base, creq, SAFEXCEL_ENCRYPT, - CONTEXT_CONTROL_CRYPTO_MODE_CBC); + return safexcel_queue_req(&req->base, creq, SAFEXCEL_ENCRYPT, + CONTEXT_CONTROL_CRYPTO_MODE_CBC, SAFEXCEL_AES); } static int safexcel_aead_decrypt(struct aead_request *req) { struct safexcel_cipher_req *creq = aead_request_ctx(req); - return safexcel_aes(&req->base, creq, SAFEXCEL_DECRYPT, - CONTEXT_CONTROL_CRYPTO_MODE_CBC); + return safexcel_queue_req(&req->base, creq, SAFEXCEL_DECRYPT, + CONTEXT_CONTROL_CRYPTO_MODE_CBC, SAFEXCEL_AES); } static int safexcel_aead_cra_init(struct crypto_tfm *tfm) @@ -935,7 +1069,7 @@ static int safexcel_aead_sha1_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_SHA1; + ctx->hash_alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA1; ctx->state_sz = SHA1_DIGEST_SIZE; return 0; } @@ -970,7 +1104,7 @@ static int safexcel_aead_sha256_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_SHA256; + ctx->hash_alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA256; ctx->state_sz = SHA256_DIGEST_SIZE; return 0; } @@ -1005,7 +1139,7 @@ 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->hash_alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA224; ctx->state_sz = SHA256_DIGEST_SIZE; return 0; } @@ -1040,7 +1174,7 @@ static int safexcel_aead_sha512_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_SHA512; + ctx->hash_alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA512; ctx->state_sz = SHA512_DIGEST_SIZE; return 0; } @@ -1075,7 +1209,7 @@ static int safexcel_aead_sha384_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_SHA384; + ctx->hash_alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA384; ctx->state_sz = SHA512_DIGEST_SIZE; return 0; }