X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=engines%2Fe_dasync.c;h=5cdacb66a043fbae5e1d71394b8ee83f5964b063;hp=25dd233769dc21e451b886c4ee1f0008a83765f4;hb=72a7a7021fa8bc82a11bc08bac1b0241a92143d0;hpb=b8972edad65a5245645f40654b903dbcd1a4d5c1 diff --git a/engines/e_dasync.c b/engines/e_dasync.c index 25dd233769..5cdacb66a0 100644 --- a/engines/e_dasync.c +++ b/engines/e_dasync.c @@ -1,77 +1,39 @@ /* - * Written by Matt Caswell (matt@openssl.org) for the OpenSSL project. - */ -/* ==================================================================== - * Copyright (c) 2015 The OpenSSL Project. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in - * the documentation and/or other materials provided with the - * distribution. - * - * 3. All advertising materials mentioning features or use of this - * software must display the following acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" + * Copyright 2015-2019 The OpenSSL Project Authors. All Rights Reserved. * - * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to - * endorse or promote products derived from this software without - * prior written permission. For written permission, please contact - * licensing@OpenSSL.org. - * - * 5. Products derived from this software may not be called "OpenSSL" - * nor may "OpenSSL" appear in their names without prior written - * permission of the OpenSSL Project. - * - * 6. Redistributions of any form whatsoever must retain the following - * acknowledgment: - * "This product includes software developed by the OpenSSL Project - * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" - * - * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY - * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR - * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; - * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) - * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED - * OF THE POSSIBILITY OF SUCH DAMAGE. - * ==================================================================== + * Licensed under the OpenSSL license (the "License"). You may not use + * this file except in compliance with the License. You can obtain a copy + * in the file LICENSE in the source distribution or at + * https://www.openssl.org/source/license.html */ +#if defined(_WIN32) +# include +#endif + #include #include #include #include +#include #include #include #include #include #include +#include +#include -#if (defined(OPENSSL_SYS_UNIX) || defined(OPENSSL_SYS_CYGWIN)) && defined(OPENSSL_THREADS) +#if defined(OPENSSL_SYS_UNIX) && defined(OPENSSL_THREADS) # undef ASYNC_POSIX # define ASYNC_POSIX # include #elif defined(_WIN32) # undef ASYNC_WIN # define ASYNC_WIN -# include #endif -#define DASYNC_LIB_NAME "DASYNC" #include "e_dasync_err.c" /* Engine Id and Name */ @@ -83,7 +45,7 @@ static const char *engine_dasync_name = "Dummy Async engine support"; static int dasync_destroy(ENGINE *e); static int dasync_init(ENGINE *e); static int dasync_finish(ENGINE *e); -void engine_load_dasync_internal(void); +void engine_load_dasync_int(void); /* Set up digests. Just SHA1 for now */ @@ -98,26 +60,13 @@ static int dasync_sha1_update(EVP_MD_CTX *ctx, const void *data, size_t count); static int dasync_sha1_final(EVP_MD_CTX *ctx, unsigned char *md); +/* + * Holds the EVP_MD object for sha1 in this engine. Set up once only during + * engine bind and can then be reused many times. + */ static EVP_MD *_hidden_sha1_md = NULL; static const EVP_MD *dasync_sha1(void) { - if (_hidden_sha1_md == NULL) { - EVP_MD *md; - - if ((md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption)) == NULL - || !EVP_MD_meth_set_result_size(md, SHA_DIGEST_LENGTH) - || !EVP_MD_meth_set_input_blocksize(md, SHA_CBLOCK) - || !EVP_MD_meth_set_app_datasize(md, - sizeof(EVP_MD *) + sizeof(SHA_CTX)) - || !EVP_MD_meth_set_flags(md, EVP_MD_FLAG_DIGALGID_ABSENT) - || !EVP_MD_meth_set_init(md, dasync_sha1_init) - || !EVP_MD_meth_set_update(md, dasync_sha1_update) - || !EVP_MD_meth_set_final(md, dasync_sha1_final)) { - EVP_MD_meth_free(md); - md = NULL; - } - _hidden_sha1_md = md; - } return _hidden_sha1_md; } static void destroy_digests(void) @@ -125,6 +74,7 @@ static void destroy_digests(void) EVP_MD_meth_free(_hidden_sha1_md); _hidden_sha1_md = NULL; } + static int dasync_digest_nids(const int **nids) { static int digest_nids[2] = { 0, 0 }; @@ -158,33 +108,109 @@ static int dasync_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, static int dasync_rsa_init(RSA *rsa); static int dasync_rsa_finish(RSA *rsa); -static RSA_METHOD dasync_rsa_method = { - "Dummy Async RSA method", - dasync_pub_enc, /* pub_enc */ - dasync_pub_dec, /* pub_dec */ - dasync_rsa_priv_enc, /* priv_enc */ - dasync_rsa_priv_dec, /* priv_dec */ - dasync_rsa_mod_exp, /* rsa_mod_exp */ - BN_mod_exp_mont, /* bn_mod_exp */ - dasync_rsa_init, /* init */ - dasync_rsa_finish, /* finish */ - 0, /* flags */ - NULL, /* app_data */ - 0, /* rsa_sign */ - 0, /* rsa_verify */ - NULL /* rsa_keygen */ +static RSA_METHOD *dasync_rsa_method = NULL; + +/* AES */ + +static int dasync_aes128_cbc_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, + void *ptr); +static int dasync_aes128_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc); +static int dasync_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl); +static int dasync_aes128_cbc_cleanup(EVP_CIPHER_CTX *ctx); + +static int dasync_aes128_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, + int arg, void *ptr); +static int dasync_aes128_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, + int enc); +static int dasync_aes128_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, + unsigned char *out, + const unsigned char *in, + size_t inl); +static int dasync_aes128_cbc_hmac_sha1_cleanup(EVP_CIPHER_CTX *ctx); + +struct dasync_pipeline_ctx { + void *inner_cipher_data; + unsigned int numpipes; + unsigned char **inbufs; + unsigned char **outbufs; + size_t *lens; + unsigned char tlsaad[SSL_MAX_PIPELINES][EVP_AEAD_TLS1_AAD_LEN]; + unsigned int aadctr; }; +/* + * Holds the EVP_CIPHER object for aes_128_cbc in this engine. Set up once only + * during engine bind and can then be reused many times. + */ +static EVP_CIPHER *_hidden_aes_128_cbc = NULL; +static const EVP_CIPHER *dasync_aes_128_cbc(void) +{ + return _hidden_aes_128_cbc; +} + +/* + * Holds the EVP_CIPHER object for aes_128_cbc_hmac_sha1 in this engine. Set up + * once only during engine bind and can then be reused many times. + * + * This 'stitched' cipher depends on the EVP_aes_128_cbc_hmac_sha1() cipher, + * which is implemented only if the AES-NI instruction set extension is available + * (see OPENSSL_IA32CAP(3)). If that's not the case, then this cipher will not + * be available either. + * + * Note: Since it is a legacy mac-then-encrypt cipher, modern TLS peers (which + * negotiate the encrypt-then-mac extension) won't negotiate it anyway. + */ +static EVP_CIPHER *_hidden_aes_128_cbc_hmac_sha1 = NULL; +static const EVP_CIPHER *dasync_aes_128_cbc_hmac_sha1(void) +{ + return _hidden_aes_128_cbc_hmac_sha1; +} + +static void destroy_ciphers(void) +{ + EVP_CIPHER_meth_free(_hidden_aes_128_cbc); + EVP_CIPHER_meth_free(_hidden_aes_128_cbc_hmac_sha1); + _hidden_aes_128_cbc = NULL; + _hidden_aes_128_cbc_hmac_sha1 = NULL; +} + +static int dasync_ciphers(ENGINE *e, const EVP_CIPHER **cipher, + const int **nids, int nid); + +static int dasync_cipher_nids[] = { + NID_aes_128_cbc, + NID_aes_128_cbc_hmac_sha1, + 0 +}; static int bind_dasync(ENGINE *e) { + /* Setup RSA_METHOD */ + if ((dasync_rsa_method = RSA_meth_new("Dummy Async RSA method", 0)) == NULL + || RSA_meth_set_pub_enc(dasync_rsa_method, dasync_pub_enc) == 0 + || RSA_meth_set_pub_dec(dasync_rsa_method, dasync_pub_dec) == 0 + || RSA_meth_set_priv_enc(dasync_rsa_method, dasync_rsa_priv_enc) == 0 + || RSA_meth_set_priv_dec(dasync_rsa_method, dasync_rsa_priv_dec) == 0 + || RSA_meth_set_mod_exp(dasync_rsa_method, dasync_rsa_mod_exp) == 0 + || RSA_meth_set_bn_mod_exp(dasync_rsa_method, BN_mod_exp_mont) == 0 + || RSA_meth_set_init(dasync_rsa_method, dasync_rsa_init) == 0 + || RSA_meth_set_finish(dasync_rsa_method, dasync_rsa_finish) == 0) { + DASYNCerr(DASYNC_F_BIND_DASYNC, DASYNC_R_INIT_FAILED); + return 0; + } + /* Ensure the dasync error handling is set up */ ERR_load_DASYNC_strings(); if (!ENGINE_set_id(e, engine_dasync_id) || !ENGINE_set_name(e, engine_dasync_name) - || !ENGINE_set_RSA(e, &dasync_rsa_method) + || !ENGINE_set_RSA(e, dasync_rsa_method) || !ENGINE_set_digests(e, dasync_digests) + || !ENGINE_set_ciphers(e, dasync_ciphers) || !ENGINE_set_destroy_function(e, dasync_destroy) || !ENGINE_set_init_function(e, dasync_init) || !ENGINE_set_finish_function(e, dasync_finish)) { @@ -192,6 +218,72 @@ static int bind_dasync(ENGINE *e) return 0; } + /* + * Set up the EVP_CIPHER and EVP_MD objects for the ciphers/digests + * supplied by this engine + */ + _hidden_sha1_md = EVP_MD_meth_new(NID_sha1, NID_sha1WithRSAEncryption); + if (_hidden_sha1_md == NULL + || !EVP_MD_meth_set_result_size(_hidden_sha1_md, SHA_DIGEST_LENGTH) + || !EVP_MD_meth_set_input_blocksize(_hidden_sha1_md, SHA_CBLOCK) + || !EVP_MD_meth_set_app_datasize(_hidden_sha1_md, + sizeof(EVP_MD *) + sizeof(SHA_CTX)) + || !EVP_MD_meth_set_flags(_hidden_sha1_md, EVP_MD_FLAG_DIGALGID_ABSENT) + || !EVP_MD_meth_set_init(_hidden_sha1_md, dasync_sha1_init) + || !EVP_MD_meth_set_update(_hidden_sha1_md, dasync_sha1_update) + || !EVP_MD_meth_set_final(_hidden_sha1_md, dasync_sha1_final)) { + EVP_MD_meth_free(_hidden_sha1_md); + _hidden_sha1_md = NULL; + } + + _hidden_aes_128_cbc = EVP_CIPHER_meth_new(NID_aes_128_cbc, + 16 /* block size */, + 16 /* key len */); + if (_hidden_aes_128_cbc == NULL + || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc,16) + || !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc, + EVP_CIPH_FLAG_DEFAULT_ASN1 + | EVP_CIPH_CBC_MODE + | EVP_CIPH_FLAG_PIPELINE) + || !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc, + dasync_aes128_init_key) + || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc, + dasync_aes128_cbc_cipher) + || !EVP_CIPHER_meth_set_cleanup(_hidden_aes_128_cbc, + dasync_aes128_cbc_cleanup) + || !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_cbc, + dasync_aes128_cbc_ctrl) + || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc, + sizeof(struct dasync_pipeline_ctx))) { + EVP_CIPHER_meth_free(_hidden_aes_128_cbc); + _hidden_aes_128_cbc = NULL; + } + + _hidden_aes_128_cbc_hmac_sha1 = EVP_CIPHER_meth_new( + NID_aes_128_cbc_hmac_sha1, + 16 /* block size */, + 16 /* key len */); + if (_hidden_aes_128_cbc_hmac_sha1 == NULL + || !EVP_CIPHER_meth_set_iv_length(_hidden_aes_128_cbc_hmac_sha1,16) + || !EVP_CIPHER_meth_set_flags(_hidden_aes_128_cbc_hmac_sha1, + EVP_CIPH_CBC_MODE + | EVP_CIPH_FLAG_DEFAULT_ASN1 + | EVP_CIPH_FLAG_AEAD_CIPHER + | EVP_CIPH_FLAG_PIPELINE) + || !EVP_CIPHER_meth_set_init(_hidden_aes_128_cbc_hmac_sha1, + dasync_aes128_cbc_hmac_sha1_init_key) + || !EVP_CIPHER_meth_set_do_cipher(_hidden_aes_128_cbc_hmac_sha1, + dasync_aes128_cbc_hmac_sha1_cipher) + || !EVP_CIPHER_meth_set_cleanup(_hidden_aes_128_cbc_hmac_sha1, + dasync_aes128_cbc_hmac_sha1_cleanup) + || !EVP_CIPHER_meth_set_ctrl(_hidden_aes_128_cbc_hmac_sha1, + dasync_aes128_cbc_hmac_sha1_ctrl) + || !EVP_CIPHER_meth_set_impl_ctx_size(_hidden_aes_128_cbc_hmac_sha1, + sizeof(struct dasync_pipeline_ctx))) { + EVP_CIPHER_meth_free(_hidden_aes_128_cbc_hmac_sha1); + _hidden_aes_128_cbc_hmac_sha1 = NULL; + } + return 1; } @@ -221,7 +313,7 @@ static ENGINE *engine_dasync(void) return ret; } -void engine_load_dasync_internal(void) +void engine_load_dasync_int(void) { ENGINE *toadd = engine_dasync(); if (!toadd) @@ -246,6 +338,8 @@ static int dasync_finish(ENGINE *e) static int dasync_destroy(ENGINE *e) { destroy_digests(); + destroy_ciphers(); + RSA_meth_free(dasync_rsa_method); ERR_unload_DASYNC_strings(); return 1; } @@ -271,6 +365,32 @@ static int dasync_digests(ENGINE *e, const EVP_MD **digest, return ok; } +static int dasync_ciphers(ENGINE *e, const EVP_CIPHER **cipher, + const int **nids, int nid) +{ + int ok = 1; + if (cipher == NULL) { + /* We are returning a list of supported nids */ + *nids = dasync_cipher_nids; + return (sizeof(dasync_cipher_nids) - + 1) / sizeof(dasync_cipher_nids[0]); + } + /* We are being asked for a specific cipher */ + switch (nid) { + case NID_aes_128_cbc: + *cipher = dasync_aes_128_cbc(); + break; + case NID_aes_128_cbc_hmac_sha1: + *cipher = dasync_aes_128_cbc_hmac_sha1(); + break; + default: + ok = 0; + *cipher = NULL; + break; + } + return ok; +} + static void wait_cleanup(ASYNC_WAIT_CTX *ctx, const void *key, OSSL_ASYNC_FD readfd, void *pvwritefd) { @@ -324,8 +444,8 @@ static void dummy_pause_job(void) { #endif *writefd = pipefds[1]; - if(!ASYNC_WAIT_CTX_set_wait_fd(waitctx, engine_dasync_id, pipefds[0], - writefd, wait_cleanup)) { + if (!ASYNC_WAIT_CTX_set_wait_fd(waitctx, engine_dasync_id, pipefds[0], + writefd, wait_cleanup)) { wait_cleanup(waitctx, engine_dasync_id, pipefds[0], writefd); return; } @@ -390,14 +510,16 @@ static int dasync_pub_enc(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding) { /* Ignore errors - we carry on anyway */ dummy_pause_job(); - return RSA_PKCS1_OpenSSL()->rsa_pub_enc(flen, from, to, rsa, padding); + return RSA_meth_get_pub_enc(RSA_PKCS1_OpenSSL()) + (flen, from, to, rsa, padding); } static int dasync_pub_dec(int flen, const unsigned char *from, unsigned char *to, RSA *rsa, int padding) { /* Ignore errors - we carry on anyway */ dummy_pause_job(); - return RSA_PKCS1_OpenSSL()->rsa_pub_dec(flen, from, to, rsa, padding); + return RSA_meth_get_pub_dec(RSA_PKCS1_OpenSSL()) + (flen, from, to, rsa, padding); } static int dasync_rsa_priv_enc(int flen, const unsigned char *from, @@ -405,7 +527,8 @@ static int dasync_rsa_priv_enc(int flen, const unsigned char *from, { /* Ignore errors - we carry on anyway */ dummy_pause_job(); - return RSA_PKCS1_OpenSSL()->rsa_priv_enc(flen, from, to, rsa, padding); + return RSA_meth_get_priv_enc(RSA_PKCS1_OpenSSL()) + (flen, from, to, rsa, padding); } static int dasync_rsa_priv_dec(int flen, const unsigned char *from, @@ -413,21 +536,250 @@ static int dasync_rsa_priv_dec(int flen, const unsigned char *from, { /* Ignore errors - we carry on anyway */ dummy_pause_job(); - return RSA_PKCS1_OpenSSL()->rsa_priv_dec(flen, from, to, rsa, padding); + return RSA_meth_get_priv_dec(RSA_PKCS1_OpenSSL()) + (flen, from, to, rsa, padding); } static int dasync_rsa_mod_exp(BIGNUM *r0, const BIGNUM *I, RSA *rsa, BN_CTX *ctx) { /* Ignore errors - we carry on anyway */ dummy_pause_job(); - return RSA_PKCS1_OpenSSL()->rsa_mod_exp(r0, I, rsa, ctx); + return RSA_meth_get_mod_exp(RSA_PKCS1_OpenSSL())(r0, I, rsa, ctx); } static int dasync_rsa_init(RSA *rsa) { - return RSA_PKCS1_OpenSSL()->init(rsa); + return RSA_meth_get_init(RSA_PKCS1_OpenSSL())(rsa); } static int dasync_rsa_finish(RSA *rsa) { - return RSA_PKCS1_OpenSSL()->finish(rsa); + return RSA_meth_get_finish(RSA_PKCS1_OpenSSL())(rsa); +} + +/* Cipher helper functions */ + +static int dasync_cipher_ctrl_helper(EVP_CIPHER_CTX *ctx, int type, int arg, + void *ptr, int aeadcapable) +{ + int ret; + struct dasync_pipeline_ctx *pipe_ctx = + (struct dasync_pipeline_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx); + + if (pipe_ctx == NULL) + return 0; + + switch (type) { + case EVP_CTRL_SET_PIPELINE_OUTPUT_BUFS: + pipe_ctx->numpipes = arg; + pipe_ctx->outbufs = (unsigned char **)ptr; + break; + + case EVP_CTRL_SET_PIPELINE_INPUT_BUFS: + pipe_ctx->numpipes = arg; + pipe_ctx->inbufs = (unsigned char **)ptr; + break; + + case EVP_CTRL_SET_PIPELINE_INPUT_LENS: + pipe_ctx->numpipes = arg; + pipe_ctx->lens = (size_t *)ptr; + break; + + case EVP_CTRL_AEAD_SET_MAC_KEY: + if (!aeadcapable) + return -1; + EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx->inner_cipher_data); + ret = EVP_CIPHER_meth_get_ctrl(EVP_aes_128_cbc_hmac_sha1()) + (ctx, type, arg, ptr); + EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx); + return ret; + + case EVP_CTRL_AEAD_TLS1_AAD: + { + unsigned char *p = ptr; + unsigned int len; + + if (!aeadcapable || arg != EVP_AEAD_TLS1_AAD_LEN) + return -1; + + if (pipe_ctx->aadctr >= SSL_MAX_PIPELINES) + return -1; + + memcpy(pipe_ctx->tlsaad[pipe_ctx->aadctr], ptr, + EVP_AEAD_TLS1_AAD_LEN); + pipe_ctx->aadctr++; + + len = p[arg - 2] << 8 | p[arg - 1]; + + if (EVP_CIPHER_CTX_encrypting(ctx)) { + if ((p[arg - 4] << 8 | p[arg - 3]) >= TLS1_1_VERSION) { + if (len < AES_BLOCK_SIZE) + return 0; + len -= AES_BLOCK_SIZE; + } + + return ((len + SHA_DIGEST_LENGTH + AES_BLOCK_SIZE) + & -AES_BLOCK_SIZE) - len; + } else { + return SHA_DIGEST_LENGTH; + } + } + + default: + return 0; + } + + return 1; +} + +static int dasync_cipher_init_key_helper(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, int enc, + const EVP_CIPHER *cipher) +{ + int ret; + struct dasync_pipeline_ctx *pipe_ctx = + (struct dasync_pipeline_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx); + + if (pipe_ctx->inner_cipher_data == NULL + && EVP_CIPHER_impl_ctx_size(cipher) != 0) { + pipe_ctx->inner_cipher_data = OPENSSL_zalloc( + EVP_CIPHER_impl_ctx_size(cipher)); + if (pipe_ctx->inner_cipher_data == NULL) { + DASYNCerr(DASYNC_F_DASYNC_CIPHER_INIT_KEY_HELPER, + ERR_R_MALLOC_FAILURE); + return 0; + } + } + + pipe_ctx->numpipes = 0; + pipe_ctx->aadctr = 0; + + EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx->inner_cipher_data); + ret = EVP_CIPHER_meth_get_init(cipher)(ctx, key, iv, enc); + EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx); + + return ret; +} + +static int dasync_cipher_helper(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl, + const EVP_CIPHER *cipher) +{ + int ret = 1; + unsigned int i, pipes; + struct dasync_pipeline_ctx *pipe_ctx = + (struct dasync_pipeline_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx); + + pipes = pipe_ctx->numpipes; + EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx->inner_cipher_data); + if (pipes == 0) { + if (pipe_ctx->aadctr != 0) { + if (pipe_ctx->aadctr != 1) + return -1; + EVP_CIPHER_meth_get_ctrl(cipher) + (ctx, EVP_CTRL_AEAD_TLS1_AAD, + EVP_AEAD_TLS1_AAD_LEN, + pipe_ctx->tlsaad[0]); + } + ret = EVP_CIPHER_meth_get_do_cipher(cipher) + (ctx, out, in, inl); + } else { + if (pipe_ctx->aadctr > 0 && pipe_ctx->aadctr != pipes) + return -1; + for (i = 0; i < pipes; i++) { + if (pipe_ctx->aadctr > 0) { + EVP_CIPHER_meth_get_ctrl(cipher) + (ctx, EVP_CTRL_AEAD_TLS1_AAD, + EVP_AEAD_TLS1_AAD_LEN, + pipe_ctx->tlsaad[i]); + } + ret = ret && EVP_CIPHER_meth_get_do_cipher(cipher) + (ctx, pipe_ctx->outbufs[i], pipe_ctx->inbufs[i], + pipe_ctx->lens[i]); + } + pipe_ctx->numpipes = 0; + } + pipe_ctx->aadctr = 0; + EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx); + return ret; +} + +static int dasync_cipher_cleanup_helper(EVP_CIPHER_CTX *ctx, + const EVP_CIPHER *cipher) +{ + struct dasync_pipeline_ctx *pipe_ctx = + (struct dasync_pipeline_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx); + + OPENSSL_clear_free(pipe_ctx->inner_cipher_data, + EVP_CIPHER_impl_ctx_size(cipher)); + + return 1; +} + +/* + * AES128 CBC Implementation + */ + +static int dasync_aes128_cbc_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, + void *ptr) +{ + return dasync_cipher_ctrl_helper(ctx, type, arg, ptr, 0); +} + +static int dasync_aes128_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + return dasync_cipher_init_key_helper(ctx, key, iv, enc, EVP_aes_128_cbc()); +} + +static int dasync_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl) +{ + return dasync_cipher_helper(ctx, out, in, inl, EVP_aes_128_cbc()); +} + +static int dasync_aes128_cbc_cleanup(EVP_CIPHER_CTX *ctx) +{ + return dasync_cipher_cleanup_helper(ctx, EVP_aes_128_cbc()); +} + + +/* + * AES128 CBC HMAC SHA1 Implementation + */ + +static int dasync_aes128_cbc_hmac_sha1_ctrl(EVP_CIPHER_CTX *ctx, int type, + int arg, void *ptr) +{ + return dasync_cipher_ctrl_helper(ctx, type, arg, ptr, 1); +} + +static int dasync_aes128_cbc_hmac_sha1_init_key(EVP_CIPHER_CTX *ctx, + const unsigned char *key, + const unsigned char *iv, + int enc) +{ + /* + * We can safely assume that EVP_aes_128_cbc_hmac_sha1() != NULL, + * see comment before the definition of dasync_aes_128_cbc_hmac_sha1(). + */ + return dasync_cipher_init_key_helper(ctx, key, iv, enc, + EVP_aes_128_cbc_hmac_sha1()); +} + +static int dasync_aes128_cbc_hmac_sha1_cipher(EVP_CIPHER_CTX *ctx, + unsigned char *out, + const unsigned char *in, + size_t inl) +{ + return dasync_cipher_helper(ctx, out, in, inl, EVP_aes_128_cbc_hmac_sha1()); +} + +static int dasync_aes128_cbc_hmac_sha1_cleanup(EVP_CIPHER_CTX *ctx) +{ + /* + * We can safely assume that EVP_aes_128_cbc_hmac_sha1() != NULL, + * see comment before the definition of dasync_aes_128_cbc_hmac_sha1(). + */ + return dasync_cipher_cleanup_helper(ctx, EVP_aes_128_cbc_hmac_sha1()); }