| /* 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 <assert.h> |
| #include <string.h> |
| |
| #include <openssl/err.h> |
| #include <openssl/mem.h> |
| #include <openssl/nid.h> |
| #include <openssl/thread.h> |
| |
| #include "internal.h" |
| #include "../internal.h" |
| |
| |
| // Node depends on |EVP_R_NOT_XOF_OR_INVALID_LENGTH|. |
| // |
| // TODO(davidben): Fix Node to not touch the error queue itself and remove this. |
| OPENSSL_DECLARE_ERROR_REASON(EVP, NOT_XOF_OR_INVALID_LENGTH) |
| |
| // The HPKE module uses the EVP error namespace, but it lives in another |
| // directory. |
| OPENSSL_DECLARE_ERROR_REASON(EVP, EMPTY_PSK) |
| |
| EVP_PKEY *EVP_PKEY_new(void) { |
| EVP_PKEY *ret = OPENSSL_zalloc(sizeof(EVP_PKEY)); |
| if (ret == NULL) { |
| return NULL; |
| } |
| |
| ret->type = EVP_PKEY_NONE; |
| ret->references = 1; |
| return ret; |
| } |
| |
| static void free_it(EVP_PKEY *pkey) { |
| if (pkey->ameth && pkey->ameth->pkey_free) { |
| pkey->ameth->pkey_free(pkey); |
| pkey->pkey = NULL; |
| pkey->type = EVP_PKEY_NONE; |
| } |
| } |
| |
| void EVP_PKEY_free(EVP_PKEY *pkey) { |
| if (pkey == NULL) { |
| return; |
| } |
| |
| if (!CRYPTO_refcount_dec_and_test_zero(&pkey->references)) { |
| return; |
| } |
| |
| free_it(pkey); |
| OPENSSL_free(pkey); |
| } |
| |
| int EVP_PKEY_up_ref(EVP_PKEY *pkey) { |
| CRYPTO_refcount_inc(&pkey->references); |
| return 1; |
| } |
| |
| int EVP_PKEY_is_opaque(const EVP_PKEY *pkey) { |
| if (pkey->ameth && pkey->ameth->pkey_opaque) { |
| return pkey->ameth->pkey_opaque(pkey); |
| } |
| return 0; |
| } |
| |
| int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) { |
| if (a->type != b->type) { |
| return -1; |
| } |
| |
| if (a->ameth) { |
| int ret; |
| // Compare parameters if the algorithm has them |
| if (a->ameth->param_cmp) { |
| ret = a->ameth->param_cmp(a, b); |
| if (ret <= 0) { |
| return ret; |
| } |
| } |
| |
| if (a->ameth->pub_cmp) { |
| return a->ameth->pub_cmp(a, b); |
| } |
| } |
| |
| return -2; |
| } |
| |
| int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) { |
| if (to->type == EVP_PKEY_NONE) { |
| evp_pkey_set_method(to, from->ameth); |
| } else if (to->type != from->type) { |
| OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_KEY_TYPES); |
| return 0; |
| } |
| |
| if (EVP_PKEY_missing_parameters(from)) { |
| OPENSSL_PUT_ERROR(EVP, EVP_R_MISSING_PARAMETERS); |
| return 0; |
| } |
| |
| // Once set, parameters may not change. |
| if (!EVP_PKEY_missing_parameters(to)) { |
| if (EVP_PKEY_cmp_parameters(to, from) == 1) { |
| return 1; |
| } |
| OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_PARAMETERS); |
| return 0; |
| } |
| |
| if (from->ameth && from->ameth->param_copy) { |
| return from->ameth->param_copy(to, from); |
| } |
| |
| // TODO(https://crbug.com/boringssl/536): If the algorithm takes no |
| // parameters, copying them should vacuously succeed. |
| return 0; |
| } |
| |
| int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) { |
| if (pkey->ameth && pkey->ameth->param_missing) { |
| return pkey->ameth->param_missing(pkey); |
| } |
| return 0; |
| } |
| |
| int EVP_PKEY_size(const EVP_PKEY *pkey) { |
| if (pkey && pkey->ameth && pkey->ameth->pkey_size) { |
| return pkey->ameth->pkey_size(pkey); |
| } |
| return 0; |
| } |
| |
| int EVP_PKEY_bits(const EVP_PKEY *pkey) { |
| if (pkey && pkey->ameth && pkey->ameth->pkey_bits) { |
| return pkey->ameth->pkey_bits(pkey); |
| } |
| return 0; |
| } |
| |
| int EVP_PKEY_id(const EVP_PKEY *pkey) { |
| return pkey->type; |
| } |
| |
| // evp_pkey_asn1_find returns the ASN.1 method table for the given |nid|, which |
| // should be one of the |EVP_PKEY_*| values. It returns NULL if |nid| is |
| // unknown. |
| static const EVP_PKEY_ASN1_METHOD *evp_pkey_asn1_find(int nid) { |
| switch (nid) { |
| case EVP_PKEY_RSA: |
| return &rsa_asn1_meth; |
| case EVP_PKEY_EC: |
| return &ec_asn1_meth; |
| case EVP_PKEY_DSA: |
| return &dsa_asn1_meth; |
| case EVP_PKEY_ED25519: |
| return &ed25519_asn1_meth; |
| case EVP_PKEY_X25519: |
| return &x25519_asn1_meth; |
| default: |
| return NULL; |
| } |
| } |
| |
| void evp_pkey_set_method(EVP_PKEY *pkey, const EVP_PKEY_ASN1_METHOD *method) { |
| free_it(pkey); |
| pkey->ameth = method; |
| pkey->type = pkey->ameth->pkey_id; |
| } |
| |
| int EVP_PKEY_type(int nid) { |
| // In OpenSSL, this was used to map between type aliases. BoringSSL supports |
| // no type aliases, so this function is just the identity. |
| return nid; |
| } |
| |
| int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key) { |
| // This function can only be used to assign RSA, DSA, EC, and DH keys. Other |
| // key types have internal representations which are not exposed through the |
| // public API. |
| switch (type) { |
| case EVP_PKEY_RSA: |
| return EVP_PKEY_assign_RSA(pkey, key); |
| case EVP_PKEY_DSA: |
| return EVP_PKEY_assign_DSA(pkey, key); |
| case EVP_PKEY_EC: |
| return EVP_PKEY_assign_EC_KEY(pkey, key); |
| case EVP_PKEY_DH: |
| return EVP_PKEY_assign_DH(pkey, key); |
| } |
| |
| OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM); |
| ERR_add_error_dataf("algorithm %d", type); |
| return 0; |
| } |
| |
| int EVP_PKEY_set_type(EVP_PKEY *pkey, int type) { |
| if (pkey && pkey->pkey) { |
| // This isn't strictly necessary, but historically |EVP_PKEY_set_type| would |
| // clear |pkey| even if |evp_pkey_asn1_find| failed, so we preserve that |
| // behavior. |
| free_it(pkey); |
| } |
| |
| const EVP_PKEY_ASN1_METHOD *ameth = evp_pkey_asn1_find(type); |
| if (ameth == NULL) { |
| OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM); |
| ERR_add_error_dataf("algorithm %d", type); |
| return 0; |
| } |
| |
| if (pkey) { |
| evp_pkey_set_method(pkey, ameth); |
| } |
| |
| return 1; |
| } |
| |
| EVP_PKEY *EVP_PKEY_new_raw_private_key(int type, ENGINE *unused, |
| const uint8_t *in, size_t len) { |
| // To avoid pulling in all key types, look for specifically the key types that |
| // support |set_priv_raw|. |
| const EVP_PKEY_ASN1_METHOD *method; |
| switch (type) { |
| case EVP_PKEY_X25519: |
| method = &x25519_asn1_meth; |
| break; |
| case EVP_PKEY_ED25519: |
| method = &ed25519_asn1_meth; |
| break; |
| default: |
| OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM); |
| return 0; |
| } |
| |
| EVP_PKEY *ret = EVP_PKEY_new(); |
| if (ret == NULL) { |
| goto err; |
| } |
| evp_pkey_set_method(ret, method); |
| |
| if (!ret->ameth->set_priv_raw(ret, in, len)) { |
| goto err; |
| } |
| |
| return ret; |
| |
| err: |
| EVP_PKEY_free(ret); |
| return NULL; |
| } |
| |
| EVP_PKEY *EVP_PKEY_new_raw_public_key(int type, ENGINE *unused, |
| const uint8_t *in, size_t len) { |
| // To avoid pulling in all key types, look for specifically the key types that |
| // support |set_pub_raw|. |
| const EVP_PKEY_ASN1_METHOD *method; |
| switch (type) { |
| case EVP_PKEY_X25519: |
| method = &x25519_asn1_meth; |
| break; |
| case EVP_PKEY_ED25519: |
| method = &ed25519_asn1_meth; |
| break; |
| default: |
| OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM); |
| return 0; |
| } |
| |
| EVP_PKEY *ret = EVP_PKEY_new(); |
| if (ret == NULL) { |
| goto err; |
| } |
| evp_pkey_set_method(ret, method); |
| |
| if (!ret->ameth->set_pub_raw(ret, in, len)) { |
| goto err; |
| } |
| |
| return ret; |
| |
| err: |
| EVP_PKEY_free(ret); |
| return NULL; |
| } |
| |
| int EVP_PKEY_get_raw_private_key(const EVP_PKEY *pkey, uint8_t *out, |
| size_t *out_len) { |
| if (pkey->ameth->get_priv_raw == NULL) { |
| OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| return 0; |
| } |
| |
| return pkey->ameth->get_priv_raw(pkey, out, out_len); |
| } |
| |
| int EVP_PKEY_get_raw_public_key(const EVP_PKEY *pkey, uint8_t *out, |
| size_t *out_len) { |
| if (pkey->ameth->get_pub_raw == NULL) { |
| OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| return 0; |
| } |
| |
| return pkey->ameth->get_pub_raw(pkey, out, out_len); |
| } |
| |
| int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) { |
| if (a->type != b->type) { |
| return -1; |
| } |
| if (a->ameth && a->ameth->param_cmp) { |
| return a->ameth->param_cmp(a, b); |
| } |
| // TODO(https://crbug.com/boringssl/536): If the algorithm doesn't use |
| // parameters, they should compare as vacuously equal. |
| return -2; |
| } |
| |
| int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) { |
| return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD, 0, |
| (void *)md); |
| } |
| |
| int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **out_md) { |
| return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_GET_MD, |
| 0, (void *)out_md); |
| } |
| |
| void *EVP_PKEY_get0(const EVP_PKEY *pkey) { |
| // Node references, but never calls this function, so for now we return NULL. |
| // If other projects require complete support, call |EVP_PKEY_get0_RSA|, etc., |
| // rather than reading |pkey->pkey| directly. This avoids problems if our |
| // internal representation does not match the type the caller expects from |
| // OpenSSL. |
| return NULL; |
| } |
| |
| void OpenSSL_add_all_algorithms(void) {} |
| |
| void OPENSSL_add_all_algorithms_conf(void) {} |
| |
| void OpenSSL_add_all_ciphers(void) {} |
| |
| void OpenSSL_add_all_digests(void) {} |
| |
| void EVP_cleanup(void) {} |
| |
| int EVP_PKEY_set1_tls_encodedpoint(EVP_PKEY *pkey, const uint8_t *in, |
| size_t len) { |
| if (pkey->ameth->set1_tls_encodedpoint == NULL) { |
| OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| return 0; |
| } |
| |
| return pkey->ameth->set1_tls_encodedpoint(pkey, in, len); |
| } |
| |
| size_t EVP_PKEY_get1_tls_encodedpoint(const EVP_PKEY *pkey, uint8_t **out_ptr) { |
| if (pkey->ameth->get1_tls_encodedpoint == NULL) { |
| OPENSSL_PUT_ERROR(EVP, EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE); |
| return 0; |
| } |
| |
| return pkey->ameth->get1_tls_encodedpoint(pkey, out_ptr); |
| } |
| |
| int EVP_PKEY_base_id(const EVP_PKEY *pkey) { |
| // OpenSSL has two notions of key type because it supports multiple OIDs for |
| // the same algorithm: NID_rsa vs NID_rsaEncryption and five distinct spelling |
| // of DSA. We do not support these, so the base ID is simply the ID. |
| return EVP_PKEY_id(pkey); |
| } |