diff options
Diffstat (limited to 'openssl/crypto/evp/pmeth_lib.c')
| -rw-r--r-- | openssl/crypto/evp/pmeth_lib.c | 540 |
1 files changed, 540 insertions, 0 deletions
diff --git a/openssl/crypto/evp/pmeth_lib.c b/openssl/crypto/evp/pmeth_lib.c new file mode 100644 index 00000000..5481d4b8 --- /dev/null +++ b/openssl/crypto/evp/pmeth_lib.c @@ -0,0 +1,540 @@ +/* pmeth_lib.c */ +/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL + * project 2006. + */ +/* ==================================================================== + * Copyright (c) 2006 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/)" + * + * 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. + * ==================================================================== + * + * This product includes cryptographic software written by Eric Young + * (eay@cryptsoft.com). This product includes software written by Tim + * Hudson (tjh@cryptsoft.com). + * + */ + +#include <stdio.h> +#include <stdlib.h> +#include "cryptlib.h" +#include <openssl/objects.h> +#include <openssl/evp.h> +#ifndef OPENSSL_NO_ENGINE +#include <openssl/engine.h> +#endif +#include "asn1_locl.h" +#include "evp_locl.h" + +typedef int sk_cmp_fn_type(const char * const *a, const char * const *b); + +DECLARE_STACK_OF(EVP_PKEY_METHOD) +STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL; + +extern const EVP_PKEY_METHOD rsa_pkey_meth, dh_pkey_meth, dsa_pkey_meth; +extern const EVP_PKEY_METHOD ec_pkey_meth, hmac_pkey_meth; + +static const EVP_PKEY_METHOD *standard_methods[] = + { +#ifndef OPENSSL_NO_RSA + &rsa_pkey_meth, +#endif +#ifndef OPENSSL_NO_DH + &dh_pkey_meth, +#endif +#ifndef OPENSSL_NO_DSA + &dsa_pkey_meth, +#endif +#ifndef OPENSSL_NO_EC + &ec_pkey_meth, +#endif + &hmac_pkey_meth, + }; + +DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *, + pmeth); + +static int pmeth_cmp(const EVP_PKEY_METHOD * const *a, + const EVP_PKEY_METHOD * const *b) + { + return ((*a)->pkey_id - (*b)->pkey_id); + } + +IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *, + pmeth); + +const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type) + { + EVP_PKEY_METHOD tmp; + const EVP_PKEY_METHOD *t = &tmp, **ret; + tmp.pkey_id = type; + if (app_pkey_methods) + { + int idx; + idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp); + if (idx >= 0) + return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx); + } + ret = OBJ_bsearch_pmeth(&t, standard_methods, + sizeof(standard_methods)/sizeof(EVP_PKEY_METHOD *)); + if (!ret || !*ret) + return NULL; + return *ret; + } + +static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id) + { + EVP_PKEY_CTX *ret; + const EVP_PKEY_METHOD *pmeth; + if (id == -1) + { + if (!pkey || !pkey->ameth) + return NULL; + id = pkey->ameth->pkey_id; + } +#ifndef OPENSSL_NO_ENGINE + if (pkey && pkey->engine) + e = pkey->engine; + /* Try to find an ENGINE which implements this method */ + if (e) + { + if (!ENGINE_init(e)) + { + EVPerr(EVP_F_INT_CTX_NEW,ERR_R_ENGINE_LIB); + return NULL; + } + } + else + e = ENGINE_get_pkey_meth_engine(id); + + /* If an ENGINE handled this method look it up. Othewise + * use internal tables. + */ + + if (e) + pmeth = ENGINE_get_pkey_meth(e, id); + else +#endif + pmeth = EVP_PKEY_meth_find(id); + + if (pmeth == NULL) + { + EVPerr(EVP_F_INT_CTX_NEW,EVP_R_UNSUPPORTED_ALGORITHM); + return NULL; + } + + ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX)); + if (!ret) + { +#ifndef OPENSSL_NO_ENGINE + if (e) + ENGINE_finish(e); +#endif + EVPerr(EVP_F_INT_CTX_NEW,ERR_R_MALLOC_FAILURE); + return NULL; + } + ret->engine = e; + ret->pmeth = pmeth; + ret->operation = EVP_PKEY_OP_UNDEFINED; + ret->pkey = pkey; + ret->peerkey = NULL; + ret->pkey_gencb = 0; + if (pkey) + CRYPTO_add(&pkey->references,1,CRYPTO_LOCK_EVP_PKEY); + ret->data = NULL; + + if (pmeth->init) + { + if (pmeth->init(ret) <= 0) + { + EVP_PKEY_CTX_free(ret); + return NULL; + } + } + + return ret; + } + +EVP_PKEY_METHOD* EVP_PKEY_meth_new(int id, int flags) + { + EVP_PKEY_METHOD *pmeth; + pmeth = OPENSSL_malloc(sizeof(EVP_PKEY_METHOD)); + if (!pmeth) + return NULL; + + pmeth->pkey_id = id; + pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC; + + pmeth->init = 0; + pmeth->copy = 0; + pmeth->cleanup = 0; + pmeth->paramgen_init = 0; + pmeth->paramgen = 0; + pmeth->keygen_init = 0; + pmeth->keygen = 0; + pmeth->sign_init = 0; + pmeth->sign = 0; + pmeth->verify_init = 0; + pmeth->verify = 0; + pmeth->verify_recover_init = 0; + pmeth->verify_recover = 0; + pmeth->signctx_init = 0; + pmeth->signctx = 0; + pmeth->verifyctx_init = 0; + pmeth->verifyctx = 0; + pmeth->encrypt_init = 0; + pmeth->encrypt = 0; + pmeth->decrypt_init = 0; + pmeth->decrypt = 0; + pmeth->derive_init = 0; + pmeth->derive = 0; + pmeth->ctrl = 0; + pmeth->ctrl_str = 0; + + return pmeth; + } + +void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth) + { + if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC)) + OPENSSL_free(pmeth); + } + +EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e) + { + return int_ctx_new(pkey, e, -1); + } + +EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e) + { + return int_ctx_new(NULL, e, id); + } + +EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx) + { + EVP_PKEY_CTX *rctx; + if (!pctx->pmeth || !pctx->pmeth->copy) + return NULL; +#ifndef OPENSSL_NO_ENGINE + /* Make sure it's safe to copy a pkey context using an ENGINE */ + if (pctx->engine && !ENGINE_init(pctx->engine)) + { + EVPerr(EVP_F_EVP_PKEY_CTX_DUP,ERR_R_ENGINE_LIB); + return 0; + } +#endif + rctx = OPENSSL_malloc(sizeof(EVP_PKEY_CTX)); + if (!rctx) + return NULL; + + rctx->pmeth = pctx->pmeth; +#ifndef OPENSSL_NO_ENGINE + rctx->engine = pctx->engine; +#endif + + if (pctx->pkey) + CRYPTO_add(&pctx->pkey->references,1,CRYPTO_LOCK_EVP_PKEY); + + rctx->pkey = pctx->pkey; + + if (pctx->peerkey) + CRYPTO_add(&pctx->peerkey->references,1,CRYPTO_LOCK_EVP_PKEY); + + rctx->peerkey = pctx->peerkey; + + rctx->data = NULL; + rctx->app_data = NULL; + rctx->operation = pctx->operation; + + if (pctx->pmeth->copy(rctx, pctx) > 0) + return rctx; + + EVP_PKEY_CTX_free(rctx); + return NULL; + + } + +int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth) + { + if (app_pkey_methods == NULL) + { + app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp); + if (!app_pkey_methods) + return 0; + } + if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) + return 0; + sk_EVP_PKEY_METHOD_sort(app_pkey_methods); + return 1; + } + +void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx) + { + if (ctx == NULL) + return; + if (ctx->pmeth && ctx->pmeth->cleanup) + ctx->pmeth->cleanup(ctx); + if (ctx->pkey) + EVP_PKEY_free(ctx->pkey); + if (ctx->peerkey) + EVP_PKEY_free(ctx->peerkey); +#ifndef OPENSSL_NO_ENGINE + if(ctx->engine) + /* The EVP_PKEY_CTX we used belongs to an ENGINE, release the + * functional reference we held for this reason. */ + ENGINE_finish(ctx->engine); +#endif + OPENSSL_free(ctx); + } + +int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype, + int cmd, int p1, void *p2) + { + int ret; + if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) + { + EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED); + return -2; + } + if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype)) + return -1; + + if (ctx->operation == EVP_PKEY_OP_UNDEFINED) + { + EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET); + return -1; + } + + if ((optype != -1) && !(ctx->operation & optype)) + { + EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION); + return -1; + } + + ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2); + + if (ret == -2) + EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED); + + return ret; + + } + +int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx, + const char *name, const char *value) + { + if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) + { + EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, + EVP_R_COMMAND_NOT_SUPPORTED); + return -2; + } + if (!strcmp(name, "digest")) + { + const EVP_MD *md; + if (!value || !(md = EVP_get_digestbyname(value))) + { + EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, + EVP_R_INVALID_DIGEST); + return 0; + } + return EVP_PKEY_CTX_set_signature_md(ctx, md); + } + return ctx->pmeth->ctrl_str(ctx, name, value); + } + +int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx) + { + return ctx->operation; + } + +void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen) + { + ctx->keygen_info = dat; + ctx->keygen_info_count = datlen; + } + +void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data) + { + ctx->data = data; + } + +void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx) + { + return ctx->data; + } + +EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx) + { + return ctx->pkey; + } + +EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx) + { + return ctx->peerkey; + } + +void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data) + { + ctx->app_data = data; + } + +void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx) + { + return ctx->app_data; + } + +void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth, + int (*init)(EVP_PKEY_CTX *ctx)) + { + pmeth->init = init; + } + +void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth, + int (*copy)(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)) + { + pmeth->copy = copy; + } + +void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth, + void (*cleanup)(EVP_PKEY_CTX *ctx)) + { + pmeth->cleanup = cleanup; + } + +void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth, + int (*paramgen_init)(EVP_PKEY_CTX *ctx), + int (*paramgen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)) + { + pmeth->paramgen_init = paramgen_init; + pmeth->paramgen = paramgen; + } + +void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth, + int (*keygen_init)(EVP_PKEY_CTX *ctx), + int (*keygen)(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)) + { + pmeth->keygen_init = keygen_init; + pmeth->keygen = keygen; + } + +void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth, + int (*sign_init)(EVP_PKEY_CTX *ctx), + int (*sign)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, + const unsigned char *tbs, size_t tbslen)) + { + pmeth->sign_init = sign_init; + pmeth->sign = sign; + } + +void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth, + int (*verify_init)(EVP_PKEY_CTX *ctx), + int (*verify)(EVP_PKEY_CTX *ctx, const unsigned char *sig, size_t siglen, + const unsigned char *tbs, size_t tbslen)) + { + pmeth->verify_init = verify_init; + pmeth->verify = verify; + } + +void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth, + int (*verify_recover_init)(EVP_PKEY_CTX *ctx), + int (*verify_recover)(EVP_PKEY_CTX *ctx, + unsigned char *sig, size_t *siglen, + const unsigned char *tbs, size_t tbslen)) + { + pmeth->verify_recover_init = verify_recover_init; + pmeth->verify_recover = verify_recover; + } + +void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth, + int (*signctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx), + int (*signctx)(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen, + EVP_MD_CTX *mctx)) + { + pmeth->signctx_init = signctx_init; + pmeth->signctx = signctx; + } + +void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth, + int (*verifyctx_init)(EVP_PKEY_CTX *ctx, EVP_MD_CTX *mctx), + int (*verifyctx)(EVP_PKEY_CTX *ctx, const unsigned char *sig,int siglen, + EVP_MD_CTX *mctx)) + { + pmeth->verifyctx_init = verifyctx_init; + pmeth->verifyctx = verifyctx; + } + +void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth, + int (*encrypt_init)(EVP_PKEY_CTX *ctx), + int (*encryptfn)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, + const unsigned char *in, size_t inlen)) + { + pmeth->encrypt_init = encrypt_init; + pmeth->encrypt = encryptfn; + } + +void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth, + int (*decrypt_init)(EVP_PKEY_CTX *ctx), + int (*decrypt)(EVP_PKEY_CTX *ctx, unsigned char *out, size_t *outlen, + const unsigned char *in, size_t inlen)) + { + pmeth->decrypt_init = decrypt_init; + pmeth->decrypt = decrypt; + } + +void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth, + int (*derive_init)(EVP_PKEY_CTX *ctx), + int (*derive)(EVP_PKEY_CTX *ctx, unsigned char *key, size_t *keylen)) + { + pmeth->derive_init = derive_init; + pmeth->derive = derive; + } + +void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth, + int (*ctrl)(EVP_PKEY_CTX *ctx, int type, int p1, void *p2), + int (*ctrl_str)(EVP_PKEY_CTX *ctx, const char *type, const char *value)) + { + pmeth->ctrl = ctrl; + pmeth->ctrl_str = ctrl_str; + } |