Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
Iuliana Prodan | 248 | 52.21% | 2 | 50.00% |
Horia Geantă | 227 | 47.79% | 2 | 50.00% |
Total | 475 | 4 |
// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause) /* * Shared descriptors for ahash algorithms * * Copyright 2017-2019 NXP */ #include "compat.h" #include "desc_constr.h" #include "caamhash_desc.h" /** * cnstr_shdsc_ahash - ahash shared descriptor * @desc: pointer to buffer used for descriptor construction * @adata: pointer to authentication transform definitions. * A split key is required for SEC Era < 6; the size of the split key * is specified in this case. * Valid algorithm values - one of OP_ALG_ALGSEL_{MD5, SHA1, SHA224, * SHA256, SHA384, SHA512}. * @state: algorithm state OP_ALG_AS_{INIT, FINALIZE, INITFINALIZE, UPDATE} * @digestsize: algorithm's digest size * @ctx_len: size of Context Register * @import_ctx: true if previous Context Register needs to be restored * must be true for ahash update and final * must be false for for ahash first and digest * @era: SEC Era */ void cnstr_shdsc_ahash(u32 * const desc, struct alginfo *adata, u32 state, int digestsize, int ctx_len, bool import_ctx, int era) { u32 op = adata->algtype; init_sh_desc(desc, HDR_SHARE_SERIAL); /* Append key if it has been set; ahash update excluded */ if (state != OP_ALG_AS_UPDATE && adata->keylen) { u32 *skip_key_load; /* Skip key loading if already shared */ skip_key_load = append_jump(desc, JUMP_JSL | JUMP_TEST_ALL | JUMP_COND_SHRD); if (era < 6) append_key_as_imm(desc, adata->key_virt, adata->keylen_pad, adata->keylen, CLASS_2 | KEY_DEST_MDHA_SPLIT | KEY_ENC); else append_proto_dkp(desc, adata); set_jump_tgt_here(desc, skip_key_load); op |= OP_ALG_AAI_HMAC_PRECOMP; } /* If needed, import context from software */ if (import_ctx) append_seq_load(desc, ctx_len, LDST_CLASS_2_CCB | LDST_SRCDST_BYTE_CONTEXT); /* Class 2 operation */ append_operation(desc, op | state | OP_ALG_ENCRYPT); /* * Load from buf and/or src and write to req->result or state->context * Calculate remaining bytes to read */ append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); /* Read remaining bytes */ append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS2 | FIFOLD_TYPE_LAST2 | FIFOLD_TYPE_MSG | KEY_VLF); /* Store class2 context bytes */ append_seq_store(desc, digestsize, LDST_CLASS_2_CCB | LDST_SRCDST_BYTE_CONTEXT); } EXPORT_SYMBOL(cnstr_shdsc_ahash); /** * cnstr_shdsc_sk_hash - shared descriptor for symmetric key cipher-based * hash algorithms * @desc: pointer to buffer used for descriptor construction * @adata: pointer to authentication transform definitions. * @state: algorithm state OP_ALG_AS_{INIT, FINALIZE, INITFINALIZE, UPDATE} * @digestsize: algorithm's digest size * @ctx_len: size of Context Register */ void cnstr_shdsc_sk_hash(u32 * const desc, struct alginfo *adata, u32 state, int digestsize, int ctx_len) { u32 *skip_key_load; init_sh_desc(desc, HDR_SHARE_SERIAL | HDR_SAVECTX); /* Skip loading of key, context if already shared */ skip_key_load = append_jump(desc, JUMP_TEST_ALL | JUMP_COND_SHRD); if (state == OP_ALG_AS_INIT || state == OP_ALG_AS_INITFINAL) { append_key_as_imm(desc, adata->key_virt, adata->keylen, adata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); } else { /* UPDATE, FINALIZE */ if (is_xcbc_aes(adata->algtype)) /* Load K1 */ append_key(desc, adata->key_dma, adata->keylen, CLASS_1 | KEY_DEST_CLASS_REG | KEY_ENC); else /* CMAC */ append_key_as_imm(desc, adata->key_virt, adata->keylen, adata->keylen, CLASS_1 | KEY_DEST_CLASS_REG); /* Restore context */ append_seq_load(desc, ctx_len, LDST_CLASS_1_CCB | LDST_SRCDST_BYTE_CONTEXT); } set_jump_tgt_here(desc, skip_key_load); /* Class 1 operation */ append_operation(desc, adata->algtype | state | OP_ALG_ENCRYPT); /* * Load from buf and/or src and write to req->result or state->context * Calculate remaining bytes to read */ append_math_add(desc, VARSEQINLEN, SEQINLEN, REG0, CAAM_CMD_SZ); /* Read remaining bytes */ append_seq_fifo_load(desc, 0, FIFOLD_CLASS_CLASS1 | FIFOLD_TYPE_LAST1 | FIFOLD_TYPE_MSG | FIFOLDST_VLF); /* * Save context: * - xcbc: partial hash, keys K2 and K3 * - cmac: partial hash, constant L = E(K,0) */ append_seq_store(desc, digestsize, LDST_CLASS_1_CCB | LDST_SRCDST_BYTE_CONTEXT); if (is_xcbc_aes(adata->algtype) && state == OP_ALG_AS_INIT) /* Save K1 */ append_fifo_store(desc, adata->key_dma, adata->keylen, LDST_CLASS_1_CCB | FIFOST_TYPE_KEY_KEK); } EXPORT_SYMBOL(cnstr_shdsc_sk_hash); MODULE_LICENSE("Dual BSD/GPL"); MODULE_DESCRIPTION("FSL CAAM ahash descriptors support"); MODULE_AUTHOR("NXP Semiconductors");
Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
Created with Cregit http://github.com/cregit/cregit
Version 2.0-RC1