/* * Copyright (c) 2020 Intel and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #include <vnet/crypto/crypto.h> #include <vnet/tls/tls.h> #include <picotls/openssl.h> #include <picotls.h> #include "pico_vpp_crypto.h" typedef void (*ptls_vpp_do_transform_fn) (ptls_cipher_context_t *, void *, const void *, size_t); vnet_crypto_main_t *cm = &crypto_main; struct cipher_context_t { ptls_cipher_context_t super; vnet_crypto_op_t op; u32 key_index; }; struct vpp_aead_context_t { ptls_aead_context_t super; vnet_crypto_op_t op; vnet_crypto_op_chunk_t chunks[2]; vnet_crypto_alg_t alg; u32 key_index; u32 chunk_index; }; static void ptls_vpp_crypto_cipher_do_init (ptls_cipher_context_t * _ctx, const void *iv) { struct cipher_context_t *ctx = (struct cipher_context_t *) _ctx; vnet_crypto_op_id_t id; if (!strcmp (ctx->super.algo->name, "AES128-CTR")) { id = VNET_CRYPTO_OP_AES_128_CTR_ENC; } else if (!strcmp (ctx->super.algo->name, "AES256-CTR")) { id = VNET_CRYPTO_OP_AES_256_CTR_ENC; } else { TLS_DBG (1, "%s, Invalid crypto cipher : ", __FUNCTION__, _ctx->algo->name); assert (0); } vnet_crypto_op_init (&ctx->op, id); ctx->op.iv = (u8 *) iv; ctx->op.key_index = ctx->key_index; } static void ptls_vpp_crypto_cipher_dispose (ptls_cipher_context_t * _ctx) { /* Do nothing */ } static void ptls_vpp_crypto_cipher_encrypt (ptls_cipher_context_t * _ctx, void *output, const void *input, size_t _len) { vlib_main_t *vm = vlib_get_main (); struct cipher_context_t *ctx = (struct cipher_context_t *) _ctx; ctx->op.src = (u8 *) input; ctx->op.dst = output; ctx->op.len = _len; vnet_crypto_process_ops (vm, &ctx->op, 1); } static int ptls_vpp_crypto_cipher_setup_crypto (ptls_cipher_context_t * _ctx, int is_enc, const void *key, const EVP_CIPHER * cipher, ptls_vpp_do_transform_fn do_transform) { struct cipher_context_t *ctx = (struct cipher_context_t *) _ctx; ctx->super.do_dispose = ptls_vpp_crypto_cipher_dispose; ctx->super.do_init = ptls_vpp_crypto_cipher_do_init; ctx->super.do_transform = do_transform; vlib_main_t *vm = vlib_get_main (); vnet_crypto_alg_t algo; if (!strcmp (ctx->super.algo->name, "AES128-CTR")) { algo = VNET_CRYPTO_ALG_AES_128_CTR; } else if (!strcmp (ctx->super.algo->name, "AES256-CTR")) { algo = VNET_CRYPTO_ALG_AES_256_CTR; } else { TLS_DBG (1, "%s, Invalid crypto cipher : ", __FUNCTION__, _ctx->algo->name); assert (0); } ctx->key_index = vnet_crypto_key_add (vm, algo, (u8 *) key, _ctx->algo->key_size); return 0; } size_t ptls_vpp_crypto_aead_decrypt (ptls_aead_context_t * _ctx, void *_output, const void *input, size_t inlen, const void *iv, const void *aad, size_t aadlen) { vlib_main_t *vm = vlib_get_main (); struct vpp_aead_context_t *ctx = (struct vpp_aead_context_t *) _ctx; int tag_size = ctx->super.algo->tag_size; ctx->op.dst = _output; ctx->op.src = (void *) input; ctx->op.len = inlen - tag_size;; ctx->op.iv = (void *) iv; ctx->op.aad = (void *) aad; ctx->op.aad_len = aadlen; ctx->op.tag = (void *) input + inlen - tag_size; ctx->op.tag_len = tag_size; vnet_crypto_process_ops (vm, &(ctx->op), 1); assert (ctx->op.status == VNET_CRYPTO_OP_STATUS_COMPLETED); return inlen - tag_size; } static void ptls_vpp_crypto_aead_encrypt_init (ptls_aead_context_t * _ctx, const void *iv, const void *aad, size_t aadlen) { struct vpp_aead_context_t *ctx = (struct vpp_aead_context_t *) _ctx; ctx->op.iv = (void *) iv; ctx->op.aad = (void *) aad; ctx->op.aad_len = aadlen; ctx->op.n_chunks = 2; ctx->op.chunk_index = 0; ctx->op.flags |= VNET_CRYPTO_OP_FLAG_CHAINED_BUFFERS; } static size_t ptls_vpp_crypto_aead_encrypt_update (ptls_aead_context_t * _ctx, void *output, const void *input, size_t inlen) { struct vpp_aead_context_t *ctx = (struct vpp_aead_context_t *) _ctx; ctx->chunks[ctx->chunk_index].dst = output; ctx->chunks[ctx->chunk_index].src = (void *) input; ctx->chunks[ctx->chunk_index].len = inlen; ctx->chunk_index = ctx->chunk_index == 0 ? 1 : 0; return inlen; } static size_t ptls_vpp_crypto_aead_encrypt_final (ptls_aead_context_t * _ctx, void *_output) { struct vlib_main_t *vm = vlib_get_main (); struct vpp_aead_context_t *ctx = (struct vpp_aead_context_t *) _ctx; ctx->op.tag = _output; ctx->op.tag_len = ctx->super.algo->tag_size; vnet_crypto_process_chained_ops (vm, &(ctx->op), ctx->chunks, 1); assert (ctx->op.status == VNET_CRYPTO_OP_STATUS_COMPLETED); return ctx->super.algo->tag_size; } static void ptls_vpp_crypto_aead_dispose_crypto (ptls_aead_context_t * _ctx) { /* Do nothing */ } static int ptls_vpp_crypto_aead_setup_crypto (ptls_aead_context_t * _ctx, int is_enc, const void *key, vnet_crypto_alg_t alg) { struct vlib_main_t *vm = vlib_get_main (); struct vpp_aead_context_t *ctx = (struct vpp_aead_context_t *) _ctx; u16 key_len = ctx->super.algo->key_size; memset (&(ctx->op), 0, sizeof (vnet_crypto_op_t)); if (alg == VNET_CRYPTO_ALG_AES_128_GCM) { if (is_enc) vnet_crypto_op_init (&(ctx->op), VNET_CRYPTO_OP_AES_128_GCM_ENC); else vnet_crypto_op_init (&(ctx->op), VNET_CRYPTO_OP_AES_128_GCM_DEC); } else if (alg == VNET_CRYPTO_ALG_AES_256_GCM) { if (is_enc) { vnet_crypto_op_init (&(ctx->op), VNET_CRYPTO_OP_AES_256_GCM_ENC); } else vnet_crypto_op_init (&(ctx->op), VNET_CRYPTO_OP_AES_256_GCM_DEC); } else { TLS_DBG (1, "%s, invalied aead cipher %s", __FUNCTION__, _ctx->algo->name); return -1; } ctx->alg = alg; ctx->op.key_index = vnet_crypto_key_add (vm, ctx->alg, (void *) key, key_len); ctx->chunk_index = 0; ctx->super.do_decrypt = ptls_vpp_crypto_aead_decrypt; ctx->super.do_encrypt_init = ptls_vpp_crypto_aead_encrypt_init; ctx->super.do_encrypt_update = ptls_vpp_crypto_aead_encrypt_update; ctx->super.do_encrypt_final = ptls_vpp_crypto_aead_encrypt_final; ctx->super.dispose_crypto = ptls_vpp_crypto_aead_dispose_crypto; return 0; } static int ptls_vpp_crypto_aes128ctr_setup_crypto (ptls_cipher_context_t * ctx, int is_enc, const void *key) { return ptls_vpp_crypto_cipher_setup_crypto (ctx, 1, key, EVP_aes_128_ctr (), ptls_vpp_crypto_cipher_encrypt); } static int ptls_vpp_crypto_aes256ctr_setup_crypto (ptls_cipher_context_t * ctx, int is_enc, const void *key) { return ptls_vpp_crypto_cipher_setup_crypto (ctx, 1, key, EVP_aes_256_ctr (), ptls_vpp_crypto_cipher_encrypt); } static int ptls_vpp_crypto_aead_aes128gcm_setup_crypto (ptls_aead_context_t * ctx, int is_enc, const void *key) { return ptls_vpp_crypto_aead_setup_crypto (ctx, is_enc, key, VNET_CRYPTO_ALG_AES_128_GCM); } static int ptls_vpp_crypto_aead_aes256gcm_setup_crypto (ptls_aead_context_t * ctx, int is_enc, const void *key) { return ptls_vpp_crypto_aead_setup_crypto (ctx, is_enc, key, VNET_CRYPTO_ALG_AES_256_GCM); } ptls_cipher_algorithm_t ptls_vpp_crypto_aes128ctr = { "AES128-CTR", PTLS_AES128_KEY_SIZE, 1, PTLS_AES_IV_SIZE, sizeof (struct vpp_aead_context_t), ptls_vpp_crypto_aes128ctr_setup_crypto }; ptls_cipher_algorithm_t ptls_vpp_crypto_aes256ctr = { "AES256-CTR", PTLS_AES256_KEY_SIZE, 1 /* block size */ , PTLS_AES_IV_SIZE, sizeof (struct vpp_aead_context_t), ptls_vpp_crypto_aes256ctr_setup_crypto }; ptls_aead_algorithm_t ptls_vpp_crypto_aes128gcm = { "AES128-GCM", &ptls_vpp_crypto_aes128ctr, NULL, PTLS_AES128_KEY_SIZE, PTLS_AESGCM_IV_SIZE, PTLS_AESGCM_TAG_SIZE, sizeof (struct vpp_aead_context_t), ptls_vpp_crypto_aead_aes128gcm_setup_crypto }; ptls_aead_algorithm_t ptls_vpp_crypto_aes256gcm = { "AES256-GCM", &ptls_vpp_crypto_aes256ctr, NULL, PTLS_AES256_KEY_SIZE, PTLS_AESGCM_IV_SIZE, PTLS_AESGCM_TAG_SIZE, sizeof (struct vpp_aead_context_t), ptls_vpp_crypto_aead_aes256gcm_setup_crypto }; ptls_cipher_suite_t ptls_vpp_crypto_aes128gcmsha256 = { PTLS_CIPHER_SUITE_AES_128_GCM_SHA256, &ptls_vpp_crypto_aes128gcm, &ptls_openssl_sha256 }; ptls_cipher_suite_t ptls_vpp_crypto_aes256gcmsha384 = { PTLS_CIPHER_SUITE_AES_256_GCM_SHA384, &ptls_vpp_crypto_aes256gcm, &ptls_openssl_sha384 }; ptls_cipher_suite_t *ptls_vpp_crypto_cipher_suites[] = { &ptls_vpp_crypto_aes256gcmsha384, &ptls_vpp_crypto_aes128gcmsha256, NULL }; /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */