diff options
Diffstat (limited to 'engines/e_dasync.c')
| -rw-r--r-- | engines/e_dasync.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/engines/e_dasync.c b/engines/e_dasync.c index 25dd233769..018175c9e4 100644 --- a/engines/e_dasync.c +++ b/engines/e_dasync.c @@ -60,6 +60,8 @@ #include <openssl/async.h> #include <openssl/bn.h> #include <openssl/crypto.h> +#include <openssl/ssl.h> +#include <openssl/modes.h> #if (defined(OPENSSL_SYS_UNIX) || defined(OPENSSL_SYS_CYGWIN)) && defined(OPENSSL_THREADS) # undef ASYNC_POSIX @@ -176,6 +178,70 @@ static RSA_METHOD dasync_rsa_method = { }; +/* 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); + +struct aes_128_cbc_pipeline_ctx { + void *inner_cipher_data; + unsigned char dummy[256]; + unsigned int numpipes; + unsigned char **inbufs; + unsigned char **outbufs; + size_t *lens; +}; + +static EVP_CIPHER *_hidden_aes_128_cbc = NULL; +static const EVP_CIPHER *dasync_aes_128_cbc(void) +{ + if (_hidden_aes_128_cbc == 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 aes_128_cbc_pipeline_ctx))) { + EVP_CIPHER_meth_free(_hidden_aes_128_cbc); + _hidden_aes_128_cbc = NULL; + } + return _hidden_aes_128_cbc; +} + + +static int dasync_ciphers(ENGINE *e, const EVP_CIPHER **cipher, + const int **nids, int nid); + +# ifdef NID_aes_128_cbc_hmac_sha256 +static int dasync_cipher_nids[] = { + NID_aes_128_cbc, + 0 +}; +# else +static int dasync_cipher_nids[] = { 0 }; +#endif + static int bind_dasync(ENGINE *e) { /* Ensure the dasync error handling is set up */ @@ -185,6 +251,7 @@ static int bind_dasync(ENGINE *e) || !ENGINE_set_name(e, engine_dasync_name) || !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)) { @@ -271,6 +338,29 @@ 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) { + /* 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; + 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) { @@ -431,3 +521,103 @@ static int dasync_rsa_finish(RSA *rsa) { return RSA_PKCS1_OpenSSL()->finish(rsa); } + +/* + * AES128 Implementation + */ + +static int dasync_aes128_cbc_ctrl(EVP_CIPHER_CTX *ctx, int type, int arg, + void *ptr) +{ + struct aes_128_cbc_pipeline_ctx *pipe_ctx = + (struct aes_128_cbc_pipeline_ctx *)EVP_CIPHER_CTX_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; + + default: + return 0; + } + + return 1; +} + +static int dasync_aes128_init_key(EVP_CIPHER_CTX *ctx, const unsigned char *key, + const unsigned char *iv, int enc) +{ + int ret; + struct aes_128_cbc_pipeline_ctx *pipe_ctx = + (struct aes_128_cbc_pipeline_ctx *)EVP_CIPHER_CTX_cipher_data(ctx); + + if (pipe_ctx->inner_cipher_data == NULL + && EVP_CIPHER_impl_ctx_size(EVP_aes_128_cbc()) != 0) { + pipe_ctx->inner_cipher_data = OPENSSL_zalloc( + EVP_CIPHER_impl_ctx_size(EVP_aes_128_cbc())); + if (pipe_ctx->inner_cipher_data == NULL) { + DASYNCerr(DASYNC_F_DASYNC_AES128_INIT_KEY, + ERR_R_MALLOC_FAILURE); + return 0; + } + } + + pipe_ctx->numpipes = 0; + + EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx->inner_cipher_data); + ret = EVP_CIPHER_meth_get_init(EVP_aes_128_cbc())(ctx, key, iv, enc); + EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx); + + return ret; +} + +static int dasync_aes128_cbc_cipher(EVP_CIPHER_CTX *ctx, unsigned char *out, + const unsigned char *in, size_t inl) +{ + int ret = 1; + unsigned int i, pipes; + struct aes_128_cbc_pipeline_ctx *pipe_ctx = + (struct aes_128_cbc_pipeline_ctx *)EVP_CIPHER_CTX_cipher_data(ctx); + + pipes = pipe_ctx->numpipes; + EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx->inner_cipher_data); + if (pipes == 0) { + ret = EVP_CIPHER_meth_get_do_cipher(EVP_aes_128_cbc()) + (ctx, out, in, inl); + } else { + for (i = 0; i < pipes; i++) { + ret = ret && EVP_CIPHER_meth_get_do_cipher(EVP_aes_128_cbc()) + (ctx, pipe_ctx->outbufs[i], + pipe_ctx->inbufs[i], + pipe_ctx->lens[i]); + } + pipe_ctx->numpipes = 0; + } + EVP_CIPHER_CTX_set_cipher_data(ctx, pipe_ctx); + return ret; +} + +static int dasync_aes128_cbc_cleanup(EVP_CIPHER_CTX *ctx) +{ + struct aes_128_cbc_pipeline_ctx *pipe_ctx = + (struct aes_128_cbc_pipeline_ctx *)EVP_CIPHER_CTX_cipher_data(ctx); + + OPENSSL_clear_free(pipe_ctx->inner_cipher_data, + EVP_CIPHER_impl_ctx_size(EVP_aes_128_cbc())); + + return 1; +} |