--- /dev/null
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to. The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code. The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * 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 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 acknowledgement:
+ * "This product includes cryptographic software written by
+ * Eric Young (eay@cryptsoft.com)"
+ * The word 'cryptographic' can be left out if the rouines from the library
+ * being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ * the apps directory (application code) you must include an acknowledgement:
+ * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS 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 AUTHOR OR 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.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed. i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.] */
+
+#include <openssl/evp.h>
+
+#include <string.h>
+
+#include <openssl/digest.h>
+#include <openssl/err.h>
+#include <openssl/mem.h>
+
+#include "../internal.h"
+#include "internal.h"
+
+
+static const EVP_PKEY_METHOD *const evp_methods[] = {
+ &rsa_pkey_meth,
+ &ec_pkey_meth,
+ &ed25519_pkey_meth,
+};
+
+static const EVP_PKEY_METHOD *evp_pkey_meth_find(int type) {
+ unsigned i;
+
+ for (i = 0; i < sizeof(evp_methods)/sizeof(EVP_PKEY_METHOD*); i++) {
+ if (evp_methods[i]->pkey_id == type) {
+ return evp_methods[i];
+ }
+ }
+
+ return NULL;
+}
+
+static EVP_PKEY_CTX *evp_pkey_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;
+ }
+
+ pmeth = evp_pkey_meth_find(id);
+
+ if (pmeth == NULL) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM);
+ ERR_add_error_dataf("algorithm %d", id);
+ return NULL;
+ }
+
+ ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
+ if (!ret) {
+ OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+ OPENSSL_memset(ret, 0, sizeof(EVP_PKEY_CTX));
+
+ ret->engine = e;
+ ret->pmeth = pmeth;
+ ret->operation = EVP_PKEY_OP_UNDEFINED;
+
+ if (pkey) {
+ EVP_PKEY_up_ref(pkey);
+ ret->pkey = pkey;
+ }
+
+ if (pmeth->init) {
+ if (pmeth->init(ret) <= 0) {
+ EVP_PKEY_free(ret->pkey);
+ OPENSSL_free(ret);
+ return NULL;
+ }
+ }
+
+ return ret;
+}
+
+EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e) {
+ return evp_pkey_ctx_new(pkey, e, -1);
+}
+
+EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e) {
+ return evp_pkey_ctx_new(NULL, e, id);
+}
+
+void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx) {
+ if (ctx == NULL) {
+ return;
+ }
+ if (ctx->pmeth && ctx->pmeth->cleanup) {
+ ctx->pmeth->cleanup(ctx);
+ }
+ EVP_PKEY_free(ctx->pkey);
+ EVP_PKEY_free(ctx->peerkey);
+ OPENSSL_free(ctx);
+}
+
+EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *ctx) {
+ if (!ctx->pmeth || !ctx->pmeth->copy) {
+ return NULL;
+ }
+
+ EVP_PKEY_CTX *ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX));
+ if (!ret) {
+ return NULL;
+ }
+
+ OPENSSL_memset(ret, 0, sizeof(EVP_PKEY_CTX));
+
+ ret->pmeth = ctx->pmeth;
+ ret->engine = ctx->engine;
+ ret->operation = ctx->operation;
+
+ if (ctx->pkey != NULL) {
+ EVP_PKEY_up_ref(ctx->pkey);
+ ret->pkey = ctx->pkey;
+ }
+
+ if (ctx->peerkey != NULL) {
+ EVP_PKEY_up_ref(ctx->peerkey);
+ ret->peerkey = ctx->peerkey;
+ }
+
+ if (ctx->pmeth->copy(ret, ctx) <= 0) {
+ ret->pmeth = NULL;
+ EVP_PKEY_CTX_free(ret);
+ OPENSSL_PUT_ERROR(EVP, ERR_LIB_EVP);
+ return NULL;
+ }
+
+ return ret;
+}
+
+EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx) { return ctx->pkey; }
+
+int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype, int cmd,
+ int p1, void *p2) {
+ if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_COMMAND_NOT_SUPPORTED);
+ return 0;
+ }
+ if (keytype != -1 && ctx->pmeth->pkey_id != keytype) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+
+ if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_NO_OPERATION_SET);
+ return 0;
+ }
+
+ if (optype != -1 && !(ctx->operation & optype)) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_INVALID_OPERATION);
+ return 0;
+ }
+
+ return ctx->pmeth->ctrl(ctx, cmd, p1, p2);
+}
+
+int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx) {
+ if (ctx == NULL || ctx->pmeth == NULL ||
+ (ctx->pmeth->sign == NULL && ctx->pmeth->sign_message == NULL)) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+
+ ctx->operation = EVP_PKEY_OP_SIGN;
+ return 1;
+}
+
+int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *sig_len,
+ const uint8_t *digest, size_t digest_len) {
+ if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ if (ctx->operation != EVP_PKEY_OP_SIGN) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+ return 0;
+ }
+ return ctx->pmeth->sign(ctx, sig, sig_len, digest, digest_len);
+}
+
+int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx) {
+ if (ctx == NULL || ctx->pmeth == NULL ||
+ (ctx->pmeth->verify == NULL && ctx->pmeth->verify_message == NULL)) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ ctx->operation = EVP_PKEY_OP_VERIFY;
+ return 1;
+}
+
+int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t sig_len,
+ const uint8_t *digest, size_t digest_len) {
+ if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ if (ctx->operation != EVP_PKEY_OP_VERIFY) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+ return 0;
+ }
+ return ctx->pmeth->verify(ctx, sig, sig_len, digest, digest_len);
+}
+
+int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx) {
+ if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ ctx->operation = EVP_PKEY_OP_ENCRYPT;
+ return 1;
+}
+
+int EVP_PKEY_encrypt(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
+ const uint8_t *in, size_t inlen) {
+ if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ if (ctx->operation != EVP_PKEY_OP_ENCRYPT) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+ return 0;
+ }
+ return ctx->pmeth->encrypt(ctx, out, outlen, in, inlen);
+}
+
+int EVP_PKEY_decrypt_init(EVP_PKEY_CTX *ctx) {
+ if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ ctx->operation = EVP_PKEY_OP_DECRYPT;
+ return 1;
+}
+
+int EVP_PKEY_decrypt(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *outlen,
+ const uint8_t *in, size_t inlen) {
+ if (!ctx || !ctx->pmeth || !ctx->pmeth->decrypt) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ if (ctx->operation != EVP_PKEY_OP_DECRYPT) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+ return 0;
+ }
+ return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen);
+}
+
+int EVP_PKEY_verify_recover_init(EVP_PKEY_CTX *ctx) {
+ if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ ctx->operation = EVP_PKEY_OP_VERIFYRECOVER;
+ return 1;
+}
+
+int EVP_PKEY_verify_recover(EVP_PKEY_CTX *ctx, uint8_t *out, size_t *out_len,
+ const uint8_t *sig, size_t sig_len) {
+ if (!ctx || !ctx->pmeth || !ctx->pmeth->verify_recover) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ if (ctx->operation != EVP_PKEY_OP_VERIFYRECOVER) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+ return 0;
+ }
+ return ctx->pmeth->verify_recover(ctx, out, out_len, sig, sig_len);
+}
+
+int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx) {
+ if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ ctx->operation = EVP_PKEY_OP_DERIVE;
+ return 1;
+}
+
+int EVP_PKEY_derive_set_peer(EVP_PKEY_CTX *ctx, EVP_PKEY *peer) {
+ int ret;
+ if (!ctx || !ctx->pmeth ||
+ !(ctx->pmeth->derive || ctx->pmeth->encrypt || ctx->pmeth->decrypt) ||
+ !ctx->pmeth->ctrl) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ if (ctx->operation != EVP_PKEY_OP_DERIVE &&
+ ctx->operation != EVP_PKEY_OP_ENCRYPT &&
+ ctx->operation != EVP_PKEY_OP_DECRYPT) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+ return 0;
+ }
+
+ ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 0, peer);
+
+ if (ret <= 0) {
+ return 0;
+ }
+
+ if (ret == 2) {
+ return 1;
+ }
+
+ if (!ctx->pkey) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_NO_KEY_SET);
+ return 0;
+ }
+
+ if (ctx->pkey->type != peer->type) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_KEY_TYPES);
+ return 0;
+ }
+
+ // ran@cryptocom.ru: For clarity. The error is if parameters in peer are
+ // present (!missing) but don't match. EVP_PKEY_cmp_parameters may return
+ // 1 (match), 0 (don't match) and -2 (comparison is not defined). -1
+ // (different key types) is impossible here because it is checked earlier.
+ // -2 is OK for us here, as well as 1, so we can check for 0 only.
+ if (!EVP_PKEY_missing_parameters(peer) &&
+ !EVP_PKEY_cmp_parameters(ctx->pkey, peer)) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_PARAMETERS);
+ return 0;
+ }
+
+ EVP_PKEY_free(ctx->peerkey);
+ ctx->peerkey = peer;
+
+ ret = ctx->pmeth->ctrl(ctx, EVP_PKEY_CTRL_PEER_KEY, 1, peer);
+
+ if (ret <= 0) {
+ ctx->peerkey = NULL;
+ return 0;
+ }
+
+ EVP_PKEY_up_ref(peer);
+ return 1;
+}
+
+int EVP_PKEY_derive(EVP_PKEY_CTX *ctx, uint8_t *key, size_t *out_key_len) {
+ if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ if (ctx->operation != EVP_PKEY_OP_DERIVE) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+ return 0;
+ }
+ return ctx->pmeth->derive(ctx, key, out_key_len);
+}
+
+int EVP_PKEY_keygen_init(EVP_PKEY_CTX *ctx) {
+ if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ ctx->operation = EVP_PKEY_OP_KEYGEN;
+ return 1;
+}
+
+int EVP_PKEY_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY **ppkey) {
+ if (!ctx || !ctx->pmeth || !ctx->pmeth->keygen) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
+ return 0;
+ }
+ if (ctx->operation != EVP_PKEY_OP_KEYGEN) {
+ OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATON_NOT_INITIALIZED);
+ return 0;
+ }
+
+ if (!ppkey) {
+ return 0;
+ }
+
+ if (!*ppkey) {
+ *ppkey = EVP_PKEY_new();
+ if (!*ppkey) {
+ OPENSSL_PUT_ERROR(EVP, ERR_LIB_EVP);
+ return 0;
+ }
+ }
+
+ if (!ctx->pmeth->keygen(ctx, *ppkey)) {
+ EVP_PKEY_free(*ppkey);
+ *ppkey = NULL;
+ return 0;
+ }
+ return 1;
+}
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