--- /dev/null
+/* 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, cmac_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,
+ &cmac_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;
+
+ memset(pmeth, 0, sizeof(EVP_PKEY_METHOD));
+
+ 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_get0_info(int *ppkey_id, int *pflags,
+ const EVP_PKEY_METHOD *meth)
+ {
+ if (ppkey_id)
+ *ppkey_id = meth->pkey_id;
+ if (pflags)
+ *pflags = meth->flags;
+ }
+
+void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
+ {
+
+ dst->init = src->init;
+ dst->copy = src->copy;
+ dst->cleanup = src->cleanup;
+
+ dst->paramgen_init = src->paramgen_init;
+ dst->paramgen = src->paramgen;
+
+ dst->keygen_init = src->keygen_init;
+ dst->keygen = src->keygen;
+
+ dst->sign_init = src->sign_init;
+ dst->sign = src->sign;
+
+ dst->verify_init = src->verify_init;
+ dst->verify = src->verify;
+
+ dst->verify_recover_init = src->verify_recover_init;
+ dst->verify_recover = src->verify_recover;
+
+ dst->signctx_init = src->signctx_init;
+ dst->signctx = src->signctx;
+
+ dst->verifyctx_init = src->verifyctx_init;
+ dst->verifyctx = src->verifyctx;
+
+ dst->encrypt_init = src->encrypt_init;
+ dst->encrypt = src->encrypt;
+
+ dst->decrypt_init = src->decrypt_init;
+ dst->decrypt = src->decrypt;
+
+ dst->derive_init = src->derive_init;
+ dst->derive = src->derive;
+
+ dst->ctrl = src->ctrl;
+ dst->ctrl_str = src->ctrl_str;
+ }
+
+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;
+ }
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