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@@ -13,9 +13,15 @@
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*/
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#include <crypto/aes.h>
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+#include <crypto/des.h>
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#include "cesa.h"
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+struct mv_cesa_des_ctx {
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+ struct mv_cesa_ctx base;
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+ u8 key[DES_KEY_SIZE];
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+};
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+
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struct mv_cesa_aes_ctx {
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struct mv_cesa_ctx base;
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struct crypto_aes_ctx aes;
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@@ -238,6 +244,30 @@ static int mv_cesa_aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
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return 0;
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}
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+static int mv_cesa_des_setkey(struct crypto_ablkcipher *cipher, const u8 *key,
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+ unsigned int len)
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+{
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+ struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher);
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+ struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm);
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+ u32 tmp[DES_EXPKEY_WORDS];
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+ int ret;
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+
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+ if (len != DES_KEY_SIZE) {
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+ crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN);
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+ return -EINVAL;
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+ }
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+
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+ ret = des_ekey(tmp, key);
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+ if (!ret && (tfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) {
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+ tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY;
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+ return -EINVAL;
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+ }
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+
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+ memcpy(ctx->key, key, DES_KEY_SIZE);
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+
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+ return 0;
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+}
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+
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static int mv_cesa_ablkcipher_dma_req_init(struct ablkcipher_request *req,
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const struct mv_cesa_op_ctx *op_templ)
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{
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@@ -364,6 +394,126 @@ static int mv_cesa_ablkcipher_req_init(struct ablkcipher_request *req,
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return ret;
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}
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+static int mv_cesa_des_op(struct ablkcipher_request *req,
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+ struct mv_cesa_op_ctx *tmpl)
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+{
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+ struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
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+ int ret;
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+
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+ mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_DES,
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+ CESA_SA_DESC_CFG_CRYPTM_MSK);
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+
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+ memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES_KEY_SIZE);
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+
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+ ret = mv_cesa_ablkcipher_req_init(req, tmpl);
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+ if (ret)
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+ return ret;
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+
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+ ret = mv_cesa_queue_req(&req->base);
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+ if (ret && ret != -EINPROGRESS)
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+ mv_cesa_ablkcipher_cleanup(req);
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+
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+ return ret;
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+}
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+
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+static int mv_cesa_ecb_des_encrypt(struct ablkcipher_request *req)
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+{
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+ struct mv_cesa_op_ctx tmpl;
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+
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+ mv_cesa_set_op_cfg(&tmpl,
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+ CESA_SA_DESC_CFG_CRYPTCM_ECB |
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+ CESA_SA_DESC_CFG_DIR_ENC);
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+
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+ return mv_cesa_des_op(req, &tmpl);
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+}
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+
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+static int mv_cesa_ecb_des_decrypt(struct ablkcipher_request *req)
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+{
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+ struct mv_cesa_op_ctx tmpl;
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+
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+ mv_cesa_set_op_cfg(&tmpl,
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+ CESA_SA_DESC_CFG_CRYPTCM_ECB |
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+ CESA_SA_DESC_CFG_DIR_DEC);
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+
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+ return mv_cesa_des_op(req, &tmpl);
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+}
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+
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+struct crypto_alg mv_cesa_ecb_des_alg = {
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+ .cra_name = "ecb(des)",
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+ .cra_driver_name = "mv-ecb-des",
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+ .cra_priority = 300,
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+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
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+ CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
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+ .cra_blocksize = DES_BLOCK_SIZE,
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+ .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
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+ .cra_alignmask = 0,
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+ .cra_type = &crypto_ablkcipher_type,
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+ .cra_module = THIS_MODULE,
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+ .cra_init = mv_cesa_ablkcipher_cra_init,
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+ .cra_u = {
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+ .ablkcipher = {
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+ .min_keysize = DES_KEY_SIZE,
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+ .max_keysize = DES_KEY_SIZE,
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+ .setkey = mv_cesa_des_setkey,
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+ .encrypt = mv_cesa_ecb_des_encrypt,
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+ .decrypt = mv_cesa_ecb_des_decrypt,
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+ },
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+ },
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+};
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+
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+static int mv_cesa_cbc_des_op(struct ablkcipher_request *req,
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+ struct mv_cesa_op_ctx *tmpl)
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+{
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+ mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC,
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+ CESA_SA_DESC_CFG_CRYPTCM_MSK);
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+
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+ memcpy(tmpl->ctx.blkcipher.iv, req->info, DES_BLOCK_SIZE);
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+
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+ return mv_cesa_des_op(req, tmpl);
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+}
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+
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+static int mv_cesa_cbc_des_encrypt(struct ablkcipher_request *req)
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+{
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+ struct mv_cesa_op_ctx tmpl;
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+
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+ mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC);
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+
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+ return mv_cesa_cbc_des_op(req, &tmpl);
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+}
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+
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+static int mv_cesa_cbc_des_decrypt(struct ablkcipher_request *req)
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+{
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+ struct mv_cesa_op_ctx tmpl;
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+
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+ mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC);
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+
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+ return mv_cesa_cbc_des_op(req, &tmpl);
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+}
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+
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+struct crypto_alg mv_cesa_cbc_des_alg = {
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+ .cra_name = "cbc(des)",
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+ .cra_driver_name = "mv-cbc-des",
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+ .cra_priority = 300,
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+ .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER |
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+ CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC,
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+ .cra_blocksize = DES_BLOCK_SIZE,
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+ .cra_ctxsize = sizeof(struct mv_cesa_des_ctx),
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+ .cra_alignmask = 0,
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+ .cra_type = &crypto_ablkcipher_type,
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+ .cra_module = THIS_MODULE,
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+ .cra_init = mv_cesa_ablkcipher_cra_init,
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+ .cra_u = {
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+ .ablkcipher = {
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+ .min_keysize = DES_KEY_SIZE,
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+ .max_keysize = DES_KEY_SIZE,
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+ .ivsize = DES_BLOCK_SIZE,
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+ .setkey = mv_cesa_des_setkey,
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+ .encrypt = mv_cesa_cbc_des_encrypt,
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+ .decrypt = mv_cesa_cbc_des_decrypt,
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+ },
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+ },
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+};
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+
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static int mv_cesa_aes_op(struct ablkcipher_request *req,
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struct mv_cesa_op_ctx *tmpl)
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{
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