/* 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 #include #include #include #include #include "internal.h" extern const EVP_PKEY_METHOD rsa_pkey_meth; extern const EVP_PKEY_METHOD hmac_pkey_meth; extern const EVP_PKEY_METHOD ec_pkey_meth; static const EVP_PKEY_METHOD *const evp_methods[] = { &rsa_pkey_meth, &hmac_pkey_meth, &ec_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_pkey_ctx_new, EVP_R_UNSUPPORTED_ALGORITHM); const char *name = OBJ_nid2sn(id); ERR_add_error_dataf("algorithm %d (%s)", id, name); return NULL; } ret = OPENSSL_malloc(sizeof(EVP_PKEY_CTX)); if (!ret) { OPENSSL_PUT_ERROR(EVP, evp_pkey_ctx_new, ERR_R_MALLOC_FAILURE); return NULL; } memset(ret, 0, sizeof(EVP_PKEY_CTX)); ret->engine = e; ret->pmeth = pmeth; ret->operation = EVP_PKEY_OP_UNDEFINED; if (pkey) { ret->pkey = EVP_PKEY_dup(pkey); } if (pmeth->init) { if (pmeth->init(ret) <= 0) { if (pkey) { 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); } if (ctx->pkey) { EVP_PKEY_free(ctx->pkey); } if (ctx->peerkey) { EVP_PKEY_free(ctx->peerkey); } OPENSSL_free(ctx); } EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx) { EVP_PKEY_CTX *rctx; if (!pctx->pmeth || !pctx->pmeth->copy) { return NULL; } rctx = OPENSSL_malloc(sizeof(EVP_PKEY_CTX)); if (!rctx) { return NULL; } memset(rctx, 0, sizeof(EVP_PKEY_CTX)); rctx->pmeth = pctx->pmeth; rctx->engine = pctx->engine; rctx->operation = pctx->operation; if (pctx->pkey) { rctx->pkey = EVP_PKEY_dup(pctx->pkey); if (rctx->pkey == NULL) { goto err; } } if (pctx->peerkey) { rctx->peerkey = EVP_PKEY_dup(pctx->peerkey); if (rctx->peerkey == NULL) { goto err; } } if (pctx->pmeth->copy(rctx, pctx) > 0) { return rctx; } err: EVP_PKEY_CTX_free(rctx); OPENSSL_PUT_ERROR(EVP, EVP_PKEY_CTX_dup, ERR_LIB_EVP); return NULL; } EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx) { return ctx->pkey; } 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; } 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) { OPENSSL_PUT_ERROR(EVP, 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) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_CTX_ctrl, EVP_R_NO_OPERATION_SET); return -1; } if (optype != -1 && !(ctx->operation & optype)) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_CTX_ctrl, EVP_R_INVALID_OPERATION); return -1; } ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2); if (ret == -2) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_CTX_ctrl, EVP_R_COMMAND_NOT_SUPPORTED); } return ret; } int EVP_PKEY_sign_init(EVP_PKEY_CTX *ctx) { if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_sign_init, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); return 0; } ctx->operation = EVP_PKEY_OP_SIGN; if (!ctx->pmeth->sign_init) { return 1; } if (!ctx->pmeth->sign_init(ctx)) { ctx->operation = EVP_PKEY_OP_UNDEFINED; return 0; } return 1; } int EVP_PKEY_sign(EVP_PKEY_CTX *ctx, uint8_t *sig, size_t *sig_len, const uint8_t *data, size_t data_len) { if (!ctx || !ctx->pmeth || !ctx->pmeth->sign) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_sign, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); return 0; } if (ctx->operation != EVP_PKEY_OP_SIGN) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_sign, EVP_R_OPERATON_NOT_INITIALIZED); return 0; } return ctx->pmeth->sign(ctx, sig, sig_len, data, data_len); } int EVP_PKEY_verify_init(EVP_PKEY_CTX *ctx) { if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_verify_init, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); return 0; } ctx->operation = EVP_PKEY_OP_VERIFY; if (!ctx->pmeth->verify_init) { return 1; } if (!ctx->pmeth->verify_init(ctx)) { ctx->operation = EVP_PKEY_OP_UNDEFINED; return 0; } return 1; } int EVP_PKEY_verify(EVP_PKEY_CTX *ctx, const uint8_t *sig, size_t sig_len, const uint8_t *data, size_t data_len) { if (!ctx || !ctx->pmeth || !ctx->pmeth->verify) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_verify, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); return 0; } if (ctx->operation != EVP_PKEY_OP_VERIFY) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_verify, EVP_R_OPERATON_NOT_INITIALIZED); return 0; } return ctx->pmeth->verify(ctx, sig, sig_len, data, data_len); } int EVP_PKEY_encrypt_init(EVP_PKEY_CTX *ctx) { if (!ctx || !ctx->pmeth || !ctx->pmeth->encrypt) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_encrypt_init, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); return 0; } ctx->operation = EVP_PKEY_OP_ENCRYPT; if (!ctx->pmeth->encrypt_init) { return 1; } if (!ctx->pmeth->encrypt_init(ctx)) { ctx->operation = EVP_PKEY_OP_UNDEFINED; return 0; } 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_PKEY_encrypt, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); return 0; } if (ctx->operation != EVP_PKEY_OP_ENCRYPT) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_encrypt, 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_PKEY_decrypt_init, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); return 0; } ctx->operation = EVP_PKEY_OP_DECRYPT; if (!ctx->pmeth->decrypt_init) { return 1; } if (!ctx->pmeth->decrypt_init(ctx)) { ctx->operation = EVP_PKEY_OP_UNDEFINED; return 0; } 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_PKEY_decrypt, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); return 0; } if (ctx->operation != EVP_PKEY_OP_DECRYPT) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_decrypt, EVP_R_OPERATON_NOT_INITIALIZED); return 0; } return ctx->pmeth->decrypt(ctx, out, outlen, in, inlen); } int EVP_PKEY_derive_init(EVP_PKEY_CTX *ctx) { if (!ctx || !ctx->pmeth || !ctx->pmeth->derive) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_derive_init, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); return 0; } ctx->operation = EVP_PKEY_OP_DERIVE; if (!ctx->pmeth->derive_init) { return 1; } if (!ctx->pmeth->derive_init(ctx)) { ctx->operation = EVP_PKEY_OP_UNDEFINED; return 0; } 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_PKEY_derive_set_peer, 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_PKEY_derive_set_peer, 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_PKEY_derive_set_peer, EVP_R_NO_KEY_SET); return 0; } if (ctx->pkey->type != peer->type) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_derive_set_peer, 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_PKEY_derive_set_peer, EVP_R_DIFFERENT_PARAMETERS); return 0; } if (ctx->peerkey) { 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_dup(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_PKEY_derive, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); return 0; } if (ctx->operation != EVP_PKEY_OP_DERIVE) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_derive, 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_PKEY_keygen_init, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); return 0; } ctx->operation = EVP_PKEY_OP_KEYGEN; if (!ctx->pmeth->keygen_init) { return 1; } if (!ctx->pmeth->keygen_init(ctx)) { ctx->operation = EVP_PKEY_OP_UNDEFINED; return 0; } 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_PKEY_keygen, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); return 0; } if (ctx->operation != EVP_PKEY_OP_KEYGEN) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_keygen, EVP_R_OPERATON_NOT_INITIALIZED); return 0; } if (!ppkey) { return 0; } if (!*ppkey) { *ppkey = EVP_PKEY_new(); if (!*ppkey) { OPENSSL_PUT_ERROR(EVP, EVP_PKEY_keygen, ERR_LIB_EVP); return 0; } } if (!ctx->pmeth->keygen(ctx, *ppkey)) { EVP_PKEY_free(*ppkey); *ppkey = NULL; return 0; } return 1; }