static int qat_alg_do_precomputes(struct icp_qat_hw_auth_algo_blk *hash, struct qat_alg_aead_ctx *ctx, const uint8_t *auth_key, unsigned int auth_keylen) { SHASH_DESC_ON_STACK(shash, ctx->hash_tfm); int block_size = crypto_shash_blocksize(ctx->hash_tfm); int digest_size = crypto_shash_digestsize(ctx->hash_tfm); __be32 *hash_state_out; __be64 *hash512_state_out; int i, offset; memset(ctx->ipad, 0, block_size); memset(ctx->opad, 0, block_size); shash->tfm = ctx->hash_tfm; shash->flags = 0x0; if (auth_keylen > block_size) { int ret = crypto_shash_digest(shash, auth_key, auth_keylen, ctx->ipad); if (ret) return ret; memcpy(ctx->opad, ctx->ipad, digest_size); } else { memcpy(ctx->ipad, auth_key, auth_keylen); memcpy(ctx->opad, auth_key, auth_keylen); } for (i = 0; i < block_size; i++) { char *ipad_ptr = ctx->ipad + i; char *opad_ptr = ctx->opad + i; *ipad_ptr ^= HMAC_IPAD_VALUE; *opad_ptr ^= HMAC_OPAD_VALUE; } if (crypto_shash_init(shash)) return -EFAULT; if (crypto_shash_update(shash, ctx->ipad, block_size)) return -EFAULT; hash_state_out = (__be32 *)hash->sha.state1; hash512_state_out = (__be64 *)hash_state_out; switch (ctx->qat_hash_alg) { case ICP_QAT_HW_AUTH_ALGO_SHA1: if (crypto_shash_export(shash, &ctx->sha1)) return -EFAULT; for (i = 0; i < digest_size >> 2; i++, hash_state_out++) *hash_state_out = cpu_to_be32(ctx->sha1.state[i]); break; case ICP_QAT_HW_AUTH_ALGO_SHA256: if (crypto_shash_export(shash, &ctx->sha256)) return -EFAULT; for (i = 0; i < digest_size >> 2; i++, hash_state_out++) *hash_state_out = cpu_to_be32(ctx->sha256.state[i]); break; case ICP_QAT_HW_AUTH_ALGO_SHA512: if (crypto_shash_export(shash, &ctx->sha512)) return -EFAULT; for (i = 0; i < digest_size >> 3; i++, hash512_state_out++) *hash512_state_out = cpu_to_be64(ctx->sha512.state[i]); break; default: return -EFAULT; } if (crypto_shash_init(shash)) return -EFAULT; if (crypto_shash_update(shash, ctx->opad, block_size)) return -EFAULT; offset = round_up(qat_get_inter_state_size(ctx->qat_hash_alg), 8); hash_state_out = (__be32 *)(hash->sha.state1 + offset); hash512_state_out = (__be64 *)hash_state_out; switch (ctx->qat_hash_alg) { case ICP_QAT_HW_AUTH_ALGO_SHA1: if (crypto_shash_export(shash, &ctx->sha1)) return -EFAULT; for (i = 0; i < digest_size >> 2; i++, hash_state_out++) *hash_state_out = cpu_to_be32(ctx->sha1.state[i]); break; case ICP_QAT_HW_AUTH_ALGO_SHA256: if (crypto_shash_export(shash, &ctx->sha256)) return -EFAULT; for (i = 0; i < digest_size >> 2; i++, hash_state_out++) *hash_state_out = cpu_to_be32(ctx->sha256.state[i]); break; case ICP_QAT_HW_AUTH_ALGO_SHA512: if (crypto_shash_export(shash, &ctx->sha512)) return -EFAULT; for (i = 0; i < digest_size >> 3; i++, hash512_state_out++) *hash512_state_out = cpu_to_be64(ctx->sha512.state[i]); break; default: return -EFAULT; } memzero_explicit(ctx->ipad, block_size); memzero_explicit(ctx->opad, block_size); return 0; }
static int qat_alg_do_precomputes(struct icp_qat_hw_auth_algo_blk *hash, struct qat_alg_session_ctx *ctx, const uint8_t *auth_key, unsigned int auth_keylen) { struct qat_auth_state auth_state; SHASH_DESC_ON_STACK(shash, ctx->hash_tfm); struct sha1_state sha1; struct sha256_state sha256; struct sha512_state sha512; int block_size = crypto_shash_blocksize(ctx->hash_tfm); int digest_size = crypto_shash_digestsize(ctx->hash_tfm); uint8_t *ipad = auth_state.data; uint8_t *opad = ipad + block_size; __be32 *hash_state_out; __be64 *hash512_state_out; int i, offset; memzero_explicit(auth_state.data, MAX_AUTH_STATE_SIZE + 64); shash->tfm = ctx->hash_tfm; shash->flags = 0x0; if (auth_keylen > block_size) { char buff[SHA512_BLOCK_SIZE]; int ret = crypto_shash_digest(shash, auth_key, auth_keylen, buff); if (ret) return ret; memcpy(ipad, buff, digest_size); memcpy(opad, buff, digest_size); memzero_explicit(ipad + digest_size, block_size - digest_size); memzero_explicit(opad + digest_size, block_size - digest_size); } else { memcpy(ipad, auth_key, auth_keylen); memcpy(opad, auth_key, auth_keylen); memzero_explicit(ipad + auth_keylen, block_size - auth_keylen); memzero_explicit(opad + auth_keylen, block_size - auth_keylen); } for (i = 0; i < block_size; i++) { char *ipad_ptr = ipad + i; char *opad_ptr = opad + i; *ipad_ptr ^= 0x36; *opad_ptr ^= 0x5C; } if (crypto_shash_init(shash)) return -EFAULT; if (crypto_shash_update(shash, ipad, block_size)) return -EFAULT; hash_state_out = (__be32 *)hash->sha.state1; hash512_state_out = (__be64 *)hash_state_out; switch (ctx->qat_hash_alg) { case ICP_QAT_HW_AUTH_ALGO_SHA1: if (crypto_shash_export(shash, &sha1)) return -EFAULT; for (i = 0; i < digest_size >> 2; i++, hash_state_out++) *hash_state_out = cpu_to_be32(*(sha1.state + i)); break; case ICP_QAT_HW_AUTH_ALGO_SHA256: if (crypto_shash_export(shash, &sha256)) return -EFAULT; for (i = 0; i < digest_size >> 2; i++, hash_state_out++) *hash_state_out = cpu_to_be32(*(sha256.state + i)); break; case ICP_QAT_HW_AUTH_ALGO_SHA512: if (crypto_shash_export(shash, &sha512)) return -EFAULT; for (i = 0; i < digest_size >> 3; i++, hash512_state_out++) *hash512_state_out = cpu_to_be64(*(sha512.state + i)); break; default: return -EFAULT; } if (crypto_shash_init(shash)) return -EFAULT; if (crypto_shash_update(shash, opad, block_size)) return -EFAULT; offset = round_up(qat_get_inter_state_size(ctx->qat_hash_alg), 8); hash_state_out = (__be32 *)(hash->sha.state1 + offset); hash512_state_out = (__be64 *)hash_state_out; switch (ctx->qat_hash_alg) { case ICP_QAT_HW_AUTH_ALGO_SHA1: if (crypto_shash_export(shash, &sha1)) return -EFAULT; for (i = 0; i < digest_size >> 2; i++, hash_state_out++) *hash_state_out = cpu_to_be32(*(sha1.state + i)); break; case ICP_QAT_HW_AUTH_ALGO_SHA256: if (crypto_shash_export(shash, &sha256)) return -EFAULT; for (i = 0; i < digest_size >> 2; i++, hash_state_out++) *hash_state_out = cpu_to_be32(*(sha256.state + i)); break; case ICP_QAT_HW_AUTH_ALGO_SHA512: if (crypto_shash_export(shash, &sha512)) return -EFAULT; for (i = 0; i < digest_size >> 3; i++, hash512_state_out++) *hash512_state_out = cpu_to_be64(*(sha512.state + i)); break; default: return -EFAULT; } memzero_explicit(ipad, block_size); memzero_explicit(opad, block_size); return 0; }