Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Gary R Hook | 1011 | 85.03% | 3 | 21.43% |
Ard Biesheuvel | 80 | 6.73% | 2 | 14.29% |
Tom Lendacky | 70 | 5.89% | 4 | 28.57% |
Herbert Xu | 23 | 1.93% | 2 | 14.29% |
Thomas Gleixner | 2 | 0.17% | 1 | 7.14% |
Mikulas Patocka | 2 | 0.17% | 1 | 7.14% |
ye xingchen | 1 | 0.08% | 1 | 7.14% |
Total | 1189 | 14 |
// SPDX-License-Identifier: GPL-2.0-only /* * AMD Cryptographic Coprocessor (CCP) DES3 crypto API support * * Copyright (C) 2016,2017 Advanced Micro Devices, Inc. * * Author: Gary R Hook <ghook@amd.com> */ #include <linux/module.h> #include <linux/sched.h> #include <linux/delay.h> #include <linux/scatterlist.h> #include <linux/crypto.h> #include <crypto/algapi.h> #include <crypto/scatterwalk.h> #include <crypto/internal/des.h> #include "ccp-crypto.h" static int ccp_des3_complete(struct crypto_async_request *async_req, int ret) { struct skcipher_request *req = skcipher_request_cast(async_req); struct ccp_ctx *ctx = crypto_skcipher_ctx_dma( crypto_skcipher_reqtfm(req)); struct ccp_des3_req_ctx *rctx = skcipher_request_ctx_dma(req); if (ret) return ret; if (ctx->u.des3.mode != CCP_DES3_MODE_ECB) memcpy(req->iv, rctx->iv, DES3_EDE_BLOCK_SIZE); return 0; } static int ccp_des3_setkey(struct crypto_skcipher *tfm, const u8 *key, unsigned int key_len) { struct ccp_crypto_skcipher_alg *alg = ccp_crypto_skcipher_alg(tfm); struct ccp_ctx *ctx = crypto_skcipher_ctx_dma(tfm); int err; err = verify_skcipher_des3_key(tfm, key); if (err) return err; /* It's not clear that there is any support for a keysize of 112. * If needed, the caller should make K1 == K3 */ ctx->u.des3.type = CCP_DES3_TYPE_168; ctx->u.des3.mode = alg->mode; ctx->u.des3.key_len = key_len; memcpy(ctx->u.des3.key, key, key_len); sg_init_one(&ctx->u.des3.key_sg, ctx->u.des3.key, key_len); return 0; } static int ccp_des3_crypt(struct skcipher_request *req, bool encrypt) { struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); struct ccp_ctx *ctx = crypto_skcipher_ctx_dma(tfm); struct ccp_des3_req_ctx *rctx = skcipher_request_ctx_dma(req); struct scatterlist *iv_sg = NULL; unsigned int iv_len = 0; if (!ctx->u.des3.key_len) return -EINVAL; if (((ctx->u.des3.mode == CCP_DES3_MODE_ECB) || (ctx->u.des3.mode == CCP_DES3_MODE_CBC)) && (req->cryptlen & (DES3_EDE_BLOCK_SIZE - 1))) return -EINVAL; if (ctx->u.des3.mode != CCP_DES3_MODE_ECB) { if (!req->iv) return -EINVAL; memcpy(rctx->iv, req->iv, DES3_EDE_BLOCK_SIZE); iv_sg = &rctx->iv_sg; iv_len = DES3_EDE_BLOCK_SIZE; sg_init_one(iv_sg, rctx->iv, iv_len); } memset(&rctx->cmd, 0, sizeof(rctx->cmd)); INIT_LIST_HEAD(&rctx->cmd.entry); rctx->cmd.engine = CCP_ENGINE_DES3; rctx->cmd.u.des3.type = ctx->u.des3.type; rctx->cmd.u.des3.mode = ctx->u.des3.mode; rctx->cmd.u.des3.action = (encrypt) ? CCP_DES3_ACTION_ENCRYPT : CCP_DES3_ACTION_DECRYPT; rctx->cmd.u.des3.key = &ctx->u.des3.key_sg; rctx->cmd.u.des3.key_len = ctx->u.des3.key_len; rctx->cmd.u.des3.iv = iv_sg; rctx->cmd.u.des3.iv_len = iv_len; rctx->cmd.u.des3.src = req->src; rctx->cmd.u.des3.src_len = req->cryptlen; rctx->cmd.u.des3.dst = req->dst; return ccp_crypto_enqueue_request(&req->base, &rctx->cmd); } static int ccp_des3_encrypt(struct skcipher_request *req) { return ccp_des3_crypt(req, true); } static int ccp_des3_decrypt(struct skcipher_request *req) { return ccp_des3_crypt(req, false); } static int ccp_des3_init_tfm(struct crypto_skcipher *tfm) { struct ccp_ctx *ctx = crypto_skcipher_ctx_dma(tfm); ctx->complete = ccp_des3_complete; ctx->u.des3.key_len = 0; crypto_skcipher_set_reqsize_dma(tfm, sizeof(struct ccp_des3_req_ctx)); return 0; } static const struct skcipher_alg ccp_des3_defaults = { .setkey = ccp_des3_setkey, .encrypt = ccp_des3_encrypt, .decrypt = ccp_des3_decrypt, .min_keysize = DES3_EDE_KEY_SIZE, .max_keysize = DES3_EDE_KEY_SIZE, .init = ccp_des3_init_tfm, .base.cra_flags = CRYPTO_ALG_ASYNC | CRYPTO_ALG_ALLOCATES_MEMORY | CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_NEED_FALLBACK, .base.cra_blocksize = DES3_EDE_BLOCK_SIZE, .base.cra_ctxsize = sizeof(struct ccp_ctx) + CRYPTO_DMA_PADDING, .base.cra_priority = CCP_CRA_PRIORITY, .base.cra_module = THIS_MODULE, }; struct ccp_des3_def { enum ccp_des3_mode mode; unsigned int version; const char *name; const char *driver_name; unsigned int blocksize; unsigned int ivsize; const struct skcipher_alg *alg_defaults; }; static const struct ccp_des3_def des3_algs[] = { { .mode = CCP_DES3_MODE_ECB, .version = CCP_VERSION(5, 0), .name = "ecb(des3_ede)", .driver_name = "ecb-des3-ccp", .blocksize = DES3_EDE_BLOCK_SIZE, .ivsize = 0, .alg_defaults = &ccp_des3_defaults, }, { .mode = CCP_DES3_MODE_CBC, .version = CCP_VERSION(5, 0), .name = "cbc(des3_ede)", .driver_name = "cbc-des3-ccp", .blocksize = DES3_EDE_BLOCK_SIZE, .ivsize = DES3_EDE_BLOCK_SIZE, .alg_defaults = &ccp_des3_defaults, }, }; static int ccp_register_des3_alg(struct list_head *head, const struct ccp_des3_def *def) { struct ccp_crypto_skcipher_alg *ccp_alg; struct skcipher_alg *alg; int ret; ccp_alg = kzalloc(sizeof(*ccp_alg), GFP_KERNEL); if (!ccp_alg) return -ENOMEM; INIT_LIST_HEAD(&ccp_alg->entry); ccp_alg->mode = def->mode; /* Copy the defaults and override as necessary */ alg = &ccp_alg->alg; *alg = *def->alg_defaults; snprintf(alg->base.cra_name, CRYPTO_MAX_ALG_NAME, "%s", def->name); snprintf(alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s", def->driver_name); alg->base.cra_blocksize = def->blocksize; alg->ivsize = def->ivsize; ret = crypto_register_skcipher(alg); if (ret) { pr_err("%s skcipher algorithm registration error (%d)\n", alg->base.cra_name, ret); kfree(ccp_alg); return ret; } list_add(&ccp_alg->entry, head); return 0; } int ccp_register_des3_algs(struct list_head *head) { int i, ret; unsigned int ccpversion = ccp_version(); for (i = 0; i < ARRAY_SIZE(des3_algs); i++) { if (des3_algs[i].version > ccpversion) continue; ret = ccp_register_des3_alg(head, &des3_algs[i]); if (ret) return ret; } return 0; }
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