/root/doris/be/src/util/encryption_util.cpp

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// Licensed to the Apache Software Foundation (ASF) under one
// or more contributor license agreements.  See the NOTICE file
// distributed with this work for additional information
// regarding copyright ownership.  The ASF licenses this file
// to you under the Apache License, Version 2.0 (the
// "License"); you may not use this file except in compliance
// with the License.  You may obtain a copy of the License at
//
//   http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing,
// software distributed under the License is distributed on an
// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied.  See the License for the
// specific language governing permissions and limitations
// under the License.

#include "util/encryption_util.h"

#include <openssl/err.h>
#include <openssl/evp.h>
#include <openssl/ossl_typ.h>
#include <sys/types.h>

#include <algorithm>
#include <cstring>
#include <string>
#include <unordered_map>

namespace doris {

static const int ENCRYPTION_MAX_KEY_LENGTH = 256;

const EVP_CIPHER* get_evp_type(const EncryptionMode mode) {
    switch (mode) {
    case EncryptionMode::AES_128_ECB:
        return EVP_aes_128_ecb();
    case EncryptionMode::AES_128_CBC:
        return EVP_aes_128_cbc();
    case EncryptionMode::AES_128_CFB:
        return EVP_aes_128_cfb();
    case EncryptionMode::AES_128_CFB1:
        return EVP_aes_128_cfb1();
    case EncryptionMode::AES_128_CFB8:
        return EVP_aes_128_cfb8();
    case EncryptionMode::AES_128_CFB128:
        return EVP_aes_128_cfb128();
    case EncryptionMode::AES_128_CTR:
        return EVP_aes_128_ctr();
    case EncryptionMode::AES_128_OFB:
        return EVP_aes_128_ofb();
    case EncryptionMode::AES_192_ECB:
        return EVP_aes_192_ecb();
    case EncryptionMode::AES_192_CBC:
        return EVP_aes_192_cbc();
    case EncryptionMode::AES_192_CFB:
        return EVP_aes_192_cfb();
    case EncryptionMode::AES_192_CFB1:
        return EVP_aes_192_cfb1();
    case EncryptionMode::AES_192_CFB8:
        return EVP_aes_192_cfb8();
    case EncryptionMode::AES_192_CFB128:
        return EVP_aes_192_cfb128();
    case EncryptionMode::AES_192_CTR:
        return EVP_aes_192_ctr();
    case EncryptionMode::AES_192_OFB:
        return EVP_aes_192_ofb();
    case EncryptionMode::AES_256_ECB:
        return EVP_aes_256_ecb();
    case EncryptionMode::AES_256_CBC:
        return EVP_aes_256_cbc();
    case EncryptionMode::AES_256_CFB:
        return EVP_aes_256_cfb();
    case EncryptionMode::AES_256_CFB1:
        return EVP_aes_256_cfb1();
    case EncryptionMode::AES_256_CFB8:
        return EVP_aes_256_cfb8();
    case EncryptionMode::AES_256_CFB128:
        return EVP_aes_256_cfb128();
    case EncryptionMode::AES_256_CTR:
        return EVP_aes_256_ctr();
    case EncryptionMode::AES_256_OFB:
        return EVP_aes_256_ofb();
    case EncryptionMode::AES_128_GCM:
        return EVP_aes_128_gcm();
    case EncryptionMode::AES_192_GCM:
        return EVP_aes_192_gcm();
    case EncryptionMode::AES_256_GCM:
        return EVP_aes_256_gcm();
    case EncryptionMode::SM4_128_CBC:
        return EVP_sm4_cbc();
    case EncryptionMode::SM4_128_ECB:
        return EVP_sm4_ecb();
    case EncryptionMode::SM4_128_CFB128:
        return EVP_sm4_cfb128();
    case EncryptionMode::SM4_128_OFB:
        return EVP_sm4_ofb();
    case EncryptionMode::SM4_128_CTR:
        return EVP_sm4_ctr();
    default:
        return nullptr;
    }
}

static std::unordered_map<EncryptionMode, uint> mode_key_sizes = {
        {EncryptionMode::AES_128_ECB, 128},    {EncryptionMode::AES_192_ECB, 192},
        {EncryptionMode::AES_256_ECB, 256},    {EncryptionMode::AES_128_CBC, 128},
        {EncryptionMode::AES_192_CBC, 192},    {EncryptionMode::AES_256_CBC, 256},
        {EncryptionMode::AES_128_CFB, 128},    {EncryptionMode::AES_192_CFB, 192},
        {EncryptionMode::AES_256_CFB, 256},    {EncryptionMode::AES_128_CFB1, 128},
        {EncryptionMode::AES_192_CFB1, 192},   {EncryptionMode::AES_256_CFB1, 256},
        {EncryptionMode::AES_128_CFB8, 128},   {EncryptionMode::AES_192_CFB8, 192},
        {EncryptionMode::AES_256_CFB8, 256},   {EncryptionMode::AES_128_CFB128, 128},
        {EncryptionMode::AES_192_CFB128, 192}, {EncryptionMode::AES_256_CFB128, 256},
        {EncryptionMode::AES_128_CTR, 128},    {EncryptionMode::AES_192_CTR, 192},
        {EncryptionMode::AES_256_CTR, 256},    {EncryptionMode::AES_128_OFB, 128},
        {EncryptionMode::AES_192_OFB, 192},    {EncryptionMode::AES_256_OFB, 256},
        {EncryptionMode::AES_128_GCM, 128},    {EncryptionMode::AES_192_GCM, 192},
        {EncryptionMode::AES_256_GCM, 256},

        {EncryptionMode::SM4_128_ECB, 128},    {EncryptionMode::SM4_128_CBC, 128},
        {EncryptionMode::SM4_128_CFB128, 128}, {EncryptionMode::SM4_128_OFB, 128},
        {EncryptionMode::SM4_128_CTR, 128}};

static void create_key(const unsigned char* origin_key, uint32_t key_length, uint8_t* encrypt_key,
                       EncryptionMode mode) {
    const uint key_size = mode_key_sizes[mode] / 8;
    uint8_t* origin_key_end = ((uint8_t*)origin_key) + key_length; /* origin key boundary*/

    uint8_t* encrypt_key_end; /* encrypt key boundary */
    encrypt_key_end = encrypt_key + key_size;

    std::memset(encrypt_key, 0, key_size); /* initialize key  */

    uint8_t* ptr;        /* Start of the encrypt key*/
    uint8_t* origin_ptr; /* Start of the origin key */
    for (ptr = encrypt_key, origin_ptr = (uint8_t*)origin_key; origin_ptr < origin_key_end;
         ptr++, origin_ptr++) {
        if (ptr == encrypt_key_end) {
            /* loop over origin key until we used all key */
            ptr = encrypt_key;
        }
        *ptr ^= *origin_ptr;
    }
}

static int do_encrypt(EVP_CIPHER_CTX* cipher_ctx, const EVP_CIPHER* cipher,
                      const unsigned char* source, uint32_t source_length,
                      const unsigned char* encrypt_key, const unsigned char* iv, bool padding,
                      unsigned char* encrypt, int* length_ptr) {
    int ret = EVP_EncryptInit(cipher_ctx, cipher, encrypt_key, iv);
    if (ret == 0) {
        return ret;
    }
    ret = EVP_CIPHER_CTX_set_padding(cipher_ctx, padding);
    if (ret == 0) {
        return ret;
    }
    int u_len = 0;
    ret = EVP_EncryptUpdate(cipher_ctx, encrypt, &u_len, source, source_length);
    if (ret == 0) {
        return ret;
    }
    int f_len = 0;
    ret = EVP_EncryptFinal(cipher_ctx, encrypt + u_len, &f_len);
    *length_ptr = u_len + f_len;
    return ret;
}

static int do_gcm_encrypt(EVP_CIPHER_CTX* cipher_ctx, const EVP_CIPHER* cipher,
                          const unsigned char* source, uint32_t source_length,
                          const unsigned char* encrypt_key, const unsigned char* iv, int iv_length,
                          unsigned char* encrypt, int* length_ptr, const unsigned char* aad,
                          uint32_t aad_length) {
    int ret = EVP_EncryptInit_ex(cipher_ctx, cipher, nullptr, nullptr, nullptr);
    if (ret != 1) {
        return ret;
    }
    ret = EVP_CIPHER_CTX_ctrl(cipher_ctx, EVP_CTRL_GCM_SET_IVLEN, iv_length, nullptr);
    if (ret != 1) {
        return ret;
    }
    ret = EVP_EncryptInit_ex(cipher_ctx, nullptr, nullptr, encrypt_key, iv);
    if (ret != 1) {
        return ret;
    }
    if (aad) {
        int tmp_len = 0;
        ret = EVP_EncryptUpdate(cipher_ctx, nullptr, &tmp_len, aad, aad_length);
        if (ret != 1) {
            return ret;
        }
    }

    std::memcpy(encrypt, iv, iv_length);
    encrypt += iv_length;

    int u_len = 0;
    ret = EVP_EncryptUpdate(cipher_ctx, encrypt, &u_len, source, source_length);
    if (ret != 1) {
        return ret;
    }
    encrypt += u_len;

    int f_len = 0;
    ret = EVP_EncryptFinal_ex(cipher_ctx, encrypt, &f_len);
    if (ret != 1) {
        return ret;
    }
    encrypt += f_len;

    ret = EVP_CIPHER_CTX_ctrl(cipher_ctx, EVP_CTRL_GCM_GET_TAG, EncryptionUtil::GCM_TAG_SIZE,
                              encrypt);
    *length_ptr = iv_length + u_len + f_len + EncryptionUtil::GCM_TAG_SIZE;
    return ret;
}

int EncryptionUtil::encrypt(EncryptionMode mode, const unsigned char* source,
                            uint32_t source_length, const unsigned char* key, uint32_t key_length,
                            const char* iv_str, int iv_input_length, bool padding,
                            unsigned char* encrypt, const unsigned char* aad, uint32_t aad_length) {
    const EVP_CIPHER* cipher = get_evp_type(mode);
    /* The encrypt key to be used for encryption */
    unsigned char encrypt_key[ENCRYPTION_MAX_KEY_LENGTH / 8];
    create_key(key, key_length, encrypt_key, mode);

    int iv_length = EVP_CIPHER_iv_length(cipher);
    if (cipher == nullptr || (iv_length > 0 && !iv_str)) {
        return AES_BAD_DATA;
    }
    char* init_vec = nullptr;
    std::string iv_default("DORISDORISDORIS_");

    if (iv_str) {
        init_vec = &iv_default[0];
        memcpy(init_vec, iv_str, std::min(iv_input_length, EVP_MAX_IV_LENGTH));
        init_vec[iv_length] = '\0';
    }
    EVP_CIPHER_CTX* cipher_ctx = EVP_CIPHER_CTX_new();
    EVP_CIPHER_CTX_reset(cipher_ctx);
    int length = 0;
    int ret = 0;
    if (is_gcm_mode(mode)) {
        ret = do_gcm_encrypt(cipher_ctx, cipher, source, source_length, encrypt_key,
                             reinterpret_cast<unsigned char*>(init_vec), iv_length, encrypt,
                             &length, aad, aad_length);
    } else {
        ret = do_encrypt(cipher_ctx, cipher, source, source_length, encrypt_key,
                         reinterpret_cast<unsigned char*>(init_vec), padding, encrypt, &length);
    }

    EVP_CIPHER_CTX_free(cipher_ctx);
    if (ret == 0) {
        ERR_clear_error();
        return AES_BAD_DATA;
    } else {
        return length;
    }
}

static int do_decrypt(EVP_CIPHER_CTX* cipher_ctx, const EVP_CIPHER* cipher,
                      const unsigned char* encrypt, uint32_t encrypt_length,
                      const unsigned char* encrypt_key, const unsigned char* iv, bool padding,
                      unsigned char* decrypt_content, int* length_ptr) {
    int ret = EVP_DecryptInit(cipher_ctx, cipher, encrypt_key, iv);
    if (ret == 0) {
        return ret;
    }
    ret = EVP_CIPHER_CTX_set_padding(cipher_ctx, padding);
    if (ret == 0) {
        return ret;
    }
    int u_len = 0;
    ret = EVP_DecryptUpdate(cipher_ctx, decrypt_content, &u_len, encrypt, encrypt_length);
    if (ret == 0) {
        return ret;
    }
    int f_len = 0;
    ret = EVP_DecryptFinal_ex(cipher_ctx, decrypt_content + u_len, &f_len);
    *length_ptr = u_len + f_len;
    return ret;
}

static int do_gcm_decrypt(EVP_CIPHER_CTX* cipher_ctx, const EVP_CIPHER* cipher,
                          const unsigned char* encrypt, uint32_t encrypt_length,
                          const unsigned char* encrypt_key, int iv_length,
                          unsigned char* decrypt_content, int* length_ptr, const unsigned char* aad,
                          uint32_t aad_length) {
    if (encrypt_length < iv_length + EncryptionUtil::GCM_TAG_SIZE) {
        return -1;
    }
    int ret = EVP_DecryptInit_ex(cipher_ctx, cipher, nullptr, nullptr, nullptr);
    if (ret != 1) {
        return ret;
    }
    ret = EVP_CIPHER_CTX_ctrl(cipher_ctx, EVP_CTRL_GCM_SET_IVLEN, iv_length, nullptr);
    if (ret != 1) {
        return ret;
    }
    ret = EVP_DecryptInit_ex(cipher_ctx, nullptr, nullptr, encrypt_key, encrypt);
    if (ret != 1) {
        return ret;
    }
    encrypt += iv_length;
    if (aad) {
        int tmp_len = 0;
        ret = EVP_DecryptUpdate(cipher_ctx, nullptr, &tmp_len, aad, aad_length);
        if (ret != 1) {
            return ret;
        }
    }

    uint32_t real_encrypt_length = encrypt_length - iv_length - EncryptionUtil::GCM_TAG_SIZE;
    int u_len = 0;
    ret = EVP_DecryptUpdate(cipher_ctx, decrypt_content, &u_len, encrypt, real_encrypt_length);
    if (ret != 1) {
        return ret;
    }
    encrypt += real_encrypt_length;
    decrypt_content += u_len;

    void* tag = const_cast<void*>(reinterpret_cast<const void*>(encrypt));
    ret = EVP_CIPHER_CTX_ctrl(cipher_ctx, EVP_CTRL_GCM_SET_TAG, EncryptionUtil::GCM_TAG_SIZE, tag);
    if (ret != 1) {
        return ret;
    }

    int f_len = 0;
    ret = EVP_DecryptFinal_ex(cipher_ctx, decrypt_content, &f_len);
    *length_ptr = u_len + f_len;
    return ret;
}

int EncryptionUtil::decrypt(EncryptionMode mode, const unsigned char* encrypt,
                            uint32_t encrypt_length, const unsigned char* key, uint32_t key_length,
                            const char* iv_str, int iv_input_length, bool padding,
                            unsigned char* decrypt_content, const unsigned char* aad,
                            uint32_t aad_length) {
    const EVP_CIPHER* cipher = get_evp_type(mode);

    /* The encrypt key to be used for decryption */
    unsigned char encrypt_key[ENCRYPTION_MAX_KEY_LENGTH / 8];
    create_key(key, key_length, encrypt_key, mode);

    int iv_length = EVP_CIPHER_iv_length(cipher);
    if (cipher == nullptr || (iv_length > 0 && !iv_str)) {
        return AES_BAD_DATA;
    }
    char* init_vec = nullptr;
    std::string iv_default("DORISDORISDORIS_");

    if (iv_str) {
        init_vec = &iv_default[0];
        memcpy(init_vec, iv_str, std::min(iv_input_length, EVP_MAX_IV_LENGTH));
        init_vec[iv_length] = '\0';
    }
    EVP_CIPHER_CTX* cipher_ctx = EVP_CIPHER_CTX_new();
    EVP_CIPHER_CTX_reset(cipher_ctx);
    int length = 0;
    int ret = 0;
    if (is_gcm_mode(mode)) {
        ret = do_gcm_decrypt(cipher_ctx, cipher, encrypt, encrypt_length, encrypt_key, iv_length,
                             decrypt_content, &length, aad, aad_length);
    } else {
        ret = do_decrypt(cipher_ctx, cipher, encrypt, encrypt_length, encrypt_key,
                         reinterpret_cast<unsigned char*>(init_vec), padding, decrypt_content,
                         &length);
    }
    EVP_CIPHER_CTX_free(cipher_ctx);
    if (ret > 0) {
        return length;
    } else {
        ERR_clear_error();
        return AES_BAD_DATA;
    }
}

} // namespace doris

Coverage Report

Created: 2024-11-21 20:24

Line	Count	Source (jump to first uncovered line)
1		// Licensed to the Apache Software Foundation (ASF) under one
2		// or more contributor license agreements. See the NOTICE file
3		// distributed with this work for additional information
4		// regarding copyright ownership. The ASF licenses this file
5		// to you under the Apache License, Version 2.0 (the
6		// "License"); you may not use this file except in compliance
7		// with the License. You may obtain a copy of the License at
8		//
9		// http://www.apache.org/licenses/LICENSE-2.0
10		//
11		// Unless required by applicable law or agreed to in writing,
12		// software distributed under the License is distributed on an
13		// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
14		// KIND, either express or implied. See the License for the
15		// specific language governing permissions and limitations
16		// under the License.
17
18		#include "util/encryption_util.h"
19
20		#include <openssl/err.h>
21		#include <openssl/evp.h>
22		#include <openssl/ossl_typ.h>
23		#include <sys/types.h>
24
25		#include <algorithm>
26		#include <cstring>
27		#include <string>
28		#include <unordered_map>
29
30		namespace doris {
31
32		static const int ENCRYPTION_MAX_KEY_LENGTH = 256;
33
34	620	const EVP_CIPHER* get_evp_type(const EncryptionMode mode) {
35	620	switch (mode) {
36	96	case EncryptionMode::AES_128_ECB:
37	96	return EVP_aes_128_ecb();
38	4	case EncryptionMode::AES_128_CBC:
39	4	return EVP_aes_128_cbc();
40	0	case EncryptionMode::AES_128_CFB:
41	0	return EVP_aes_128_cfb();
42	0	case EncryptionMode::AES_128_CFB1:
43	0	return EVP_aes_128_cfb1();
44	0	case EncryptionMode::AES_128_CFB8:
45	0	return EVP_aes_128_cfb8();
46	0	case EncryptionMode::AES_128_CFB128:
47	0	return EVP_aes_128_cfb128();
48	0	case EncryptionMode::AES_128_CTR:
49	0	return EVP_aes_128_ctr();
50	85	case EncryptionMode::AES_128_OFB:
51	85	return EVP_aes_128_ofb();
52	0	case EncryptionMode::AES_192_ECB:
53	0	return EVP_aes_192_ecb();
54	0	case EncryptionMode::AES_192_CBC:
55	0	return EVP_aes_192_cbc();
56	0	case EncryptionMode::AES_192_CFB:
57	0	return EVP_aes_192_cfb();
58	0	case EncryptionMode::AES_192_CFB1:
59	0	return EVP_aes_192_cfb1();
60	0	case EncryptionMode::AES_192_CFB8:
61	0	return EVP_aes_192_cfb8();
62	0	case EncryptionMode::AES_192_CFB128:
63	0	return EVP_aes_192_cfb128();
64	0	case EncryptionMode::AES_192_CTR:
65	0	return EVP_aes_192_ctr();
66	0	case EncryptionMode::AES_192_OFB:
67	0	return EVP_aes_192_ofb();
68	85	case EncryptionMode::AES_256_ECB:
69	85	return EVP_aes_256_ecb();
70	0	case EncryptionMode::AES_256_CBC:
71	0	return EVP_aes_256_cbc();
72	0	case EncryptionMode::AES_256_CFB:
73	0	return EVP_aes_256_cfb();
74	0	case EncryptionMode::AES_256_CFB1:
75	0	return EVP_aes_256_cfb1();
76	0	case EncryptionMode::AES_256_CFB8:
77	0	return EVP_aes_256_cfb8();
78	0	case EncryptionMode::AES_256_CFB128:
79	0	return EVP_aes_256_cfb128();
80	0	case EncryptionMode::AES_256_CTR:
81	0	return EVP_aes_256_ctr();
82	0	case EncryptionMode::AES_256_OFB:
83	0	return EVP_aes_256_ofb();
84	0	case EncryptionMode::AES_128_GCM:
85	0	return EVP_aes_128_gcm();
86	0	case EncryptionMode::AES_192_GCM:
87	0	return EVP_aes_192_gcm();
88	0	case EncryptionMode::AES_256_GCM:
89	0	return EVP_aes_256_gcm();
90	4	case EncryptionMode::SM4_128_CBC:
91	4	return EVP_sm4_cbc();
92	176	case EncryptionMode::SM4_128_ECB:
93	176	return EVP_sm4_ecb();
94	0	case EncryptionMode::SM4_128_CFB128:
95	0	return EVP_sm4_cfb128();
96	85	case EncryptionMode::SM4_128_OFB:
97	85	return EVP_sm4_ofb();
98	85	case EncryptionMode::SM4_128_CTR:
99	85	return EVP_sm4_ctr();
100	0	default:
101	0	return nullptr;
102	620	}
103	620	}
104
105		static std::unordered_map<EncryptionMode, uint> mode_key_sizes = {
106		{EncryptionMode::AES_128_ECB, 128}, {EncryptionMode::AES_192_ECB, 192},
107		{EncryptionMode::AES_256_ECB, 256}, {EncryptionMode::AES_128_CBC, 128},
108		{EncryptionMode::AES_192_CBC, 192}, {EncryptionMode::AES_256_CBC, 256},
109		{EncryptionMode::AES_128_CFB, 128}, {EncryptionMode::AES_192_CFB, 192},
110		{EncryptionMode::AES_256_CFB, 256}, {EncryptionMode::AES_128_CFB1, 128},
111		{EncryptionMode::AES_192_CFB1, 192}, {EncryptionMode::AES_256_CFB1, 256},
112		{EncryptionMode::AES_128_CFB8, 128}, {EncryptionMode::AES_192_CFB8, 192},
113		{EncryptionMode::AES_256_CFB8, 256}, {EncryptionMode::AES_128_CFB128, 128},
114		{EncryptionMode::AES_192_CFB128, 192}, {EncryptionMode::AES_256_CFB128, 256},
115		{EncryptionMode::AES_128_CTR, 128}, {EncryptionMode::AES_192_CTR, 192},
116		{EncryptionMode::AES_256_CTR, 256}, {EncryptionMode::AES_128_OFB, 128},
117		{EncryptionMode::AES_192_OFB, 192}, {EncryptionMode::AES_256_OFB, 256},
118		{EncryptionMode::AES_128_GCM, 128}, {EncryptionMode::AES_192_GCM, 192},
119		{EncryptionMode::AES_256_GCM, 256},
120
121		{EncryptionMode::SM4_128_ECB, 128}, {EncryptionMode::SM4_128_CBC, 128},
122		{EncryptionMode::SM4_128_CFB128, 128}, {EncryptionMode::SM4_128_OFB, 128},
123		{EncryptionMode::SM4_128_CTR, 128}};
124
125		static void create_key(const unsigned char* origin_key, uint32_t key_length, uint8_t* encrypt_key,
126	620	EncryptionMode mode) {
127	620	const uint key_size = mode_key_sizes[mode] / 8;
128	620	uint8_t* origin_key_end = ((uint8_t)origin_key) + key_length; / origin key boundary*/
129
130	620	uint8_t* encrypt_key_end; /* encrypt key boundary */
131	620	encrypt_key_end = encrypt_key + key_size;
132
133	620	std::memset(encrypt_key, 0, key_size); /* initialize key */
134
135	620	uint8_t* ptr; /* Start of the encrypt key*/
136	620	uint8_t* origin_ptr; /* Start of the origin key */
137	5.58k	for (ptr = encrypt_key, origin_ptr = (uint8_t*)origin_key; origin_ptr < origin_key_end;
138	4.96k	ptr++, origin_ptr++) {
139	4.96k	if (ptr == encrypt_key_end) {
140		/* loop over origin key until we used all key */
141	0	ptr = encrypt_key;
142	0	}
143	4.96k	ptr ^= origin_ptr;
144	4.96k	}
145	620	}
146
147		static int do_encrypt(EVP_CIPHER_CTX* cipher_ctx, const EVP_CIPHER* cipher,
148		const unsigned char* source, uint32_t source_length,
149		const unsigned char* encrypt_key, const unsigned char* iv, bool padding,
150	324	unsigned char* encrypt, int* length_ptr) {
151	324	int ret = EVP_EncryptInit(cipher_ctx, cipher, encrypt_key, iv);
152	324	if (ret == 0) {
153	0	return ret;
154	0	}
155	324	ret = EVP_CIPHER_CTX_set_padding(cipher_ctx, padding);
156	324	if (ret == 0) {
157	0	return ret;
158	0	}
159	324	int u_len = 0;
160	324	ret = EVP_EncryptUpdate(cipher_ctx, encrypt, &u_len, source, source_length);
161	324	if (ret == 0) {
162	0	return ret;
163	0	}
164	324	int f_len = 0;
165	324	ret = EVP_EncryptFinal(cipher_ctx, encrypt + u_len, &f_len);
166	324	*length_ptr = u_len + f_len;
167	324	return ret;
168	324	}
169
170		static int do_gcm_encrypt(EVP_CIPHER_CTX* cipher_ctx, const EVP_CIPHER* cipher,
171		const unsigned char* source, uint32_t source_length,
172		const unsigned char* encrypt_key, const unsigned char* iv, int iv_length,
173		unsigned char* encrypt, int* length_ptr, const unsigned char* aad,
174	0	uint32_t aad_length) {
175	0	int ret = EVP_EncryptInit_ex(cipher_ctx, cipher, nullptr, nullptr, nullptr);
176	0	if (ret != 1) {
177	0	return ret;
178	0	}
179	0	ret = EVP_CIPHER_CTX_ctrl(cipher_ctx, EVP_CTRL_GCM_SET_IVLEN, iv_length, nullptr);
180	0	if (ret != 1) {
181	0	return ret;
182	0	}
183	0	ret = EVP_EncryptInit_ex(cipher_ctx, nullptr, nullptr, encrypt_key, iv);
184	0	if (ret != 1) {
185	0	return ret;
186	0	}
187	0	if (aad) {
188	0	int tmp_len = 0;
189	0	ret = EVP_EncryptUpdate(cipher_ctx, nullptr, &tmp_len, aad, aad_length);
190	0	if (ret != 1) {
191	0	return ret;
192	0	}
193	0	}
194
195	0	std::memcpy(encrypt, iv, iv_length);
196	0	encrypt += iv_length;
197
198	0	int u_len = 0;
199	0	ret = EVP_EncryptUpdate(cipher_ctx, encrypt, &u_len, source, source_length);
200	0	if (ret != 1) {
201	0	return ret;
202	0	}
203	0	encrypt += u_len;
204
205	0	int f_len = 0;
206	0	ret = EVP_EncryptFinal_ex(cipher_ctx, encrypt, &f_len);
207	0	if (ret != 1) {
208	0	return ret;
209	0	}
210	0	encrypt += f_len;
211
212	0	ret = EVP_CIPHER_CTX_ctrl(cipher_ctx, EVP_CTRL_GCM_GET_TAG, EncryptionUtil::GCM_TAG_SIZE,
213	0	encrypt);
214	0	*length_ptr = iv_length + u_len + f_len + EncryptionUtil::GCM_TAG_SIZE;
215	0	return ret;
216	0	}
217
218		int EncryptionUtil::encrypt(EncryptionMode mode, const unsigned char* source,
219		uint32_t source_length, const unsigned char* key, uint32_t key_length,
220		const char* iv_str, int iv_input_length, bool padding,
221	324	unsigned char* encrypt, const unsigned char* aad, uint32_t aad_length) {
222	324	const EVP_CIPHER* cipher = get_evp_type(mode);
223		/* The encrypt key to be used for encryption */
224	324	unsigned char encrypt_key[ENCRYPTION_MAX_KEY_LENGTH / 8];
225	324	create_key(key, key_length, encrypt_key, mode);
226
227	324	int iv_length = EVP_CIPHER_iv_length(cipher);
228	324	if (cipher == nullptr \|\| (iv_length > 0 && !iv_str)) {
229	0	return AES_BAD_DATA;
230	0	}
231	324	char* init_vec = nullptr;
232	324	std::string iv_default("DORISDORISDORIS_");
233
234	324	if (iv_str) {
235	270	init_vec = &iv_default[0];
236	270	memcpy(init_vec, iv_str, std::min(iv_input_length, EVP_MAX_IV_LENGTH));
237	270	init_vec[iv_length] = '\0';
238	270	}
239	324	EVP_CIPHER_CTX* cipher_ctx = EVP_CIPHER_CTX_new();
240	324	EVP_CIPHER_CTX_reset(cipher_ctx);
241	324	int length = 0;
242	324	int ret = 0;
243	324	if (is_gcm_mode(mode)) {
244	0	ret = do_gcm_encrypt(cipher_ctx, cipher, source, source_length, encrypt_key,
245	0	reinterpret_cast<unsigned char*>(init_vec), iv_length, encrypt,
246	0	&length, aad, aad_length);
247	324	} else {
248	324	ret = do_encrypt(cipher_ctx, cipher, source, source_length, encrypt_key,
249	324	reinterpret_cast<unsigned char*>(init_vec), padding, encrypt, &length);
250	324	}
251
252	324	EVP_CIPHER_CTX_free(cipher_ctx);
253	324	if (ret == 0) {
254	0	ERR_clear_error();
255	0	return AES_BAD_DATA;
256	324	} else {
257	324	return length;
258	324	}
259	324	}
260
261		static int do_decrypt(EVP_CIPHER_CTX* cipher_ctx, const EVP_CIPHER* cipher,
262		const unsigned char* encrypt, uint32_t encrypt_length,
263		const unsigned char* encrypt_key, const unsigned char* iv, bool padding,
264	296	unsigned char* decrypt_content, int* length_ptr) {
265	296	int ret = EVP_DecryptInit(cipher_ctx, cipher, encrypt_key, iv);
266	296	if (ret == 0) {
267	0	return ret;
268	0	}
269	296	ret = EVP_CIPHER_CTX_set_padding(cipher_ctx, padding);
270	296	if (ret == 0) {
271	0	return ret;
272	0	}
273	296	int u_len = 0;
274	296	ret = EVP_DecryptUpdate(cipher_ctx, decrypt_content, &u_len, encrypt, encrypt_length);
275	296	if (ret == 0) {
276	0	return ret;
277	0	}
278	296	int f_len = 0;
279	296	ret = EVP_DecryptFinal_ex(cipher_ctx, decrypt_content + u_len, &f_len);
280	296	*length_ptr = u_len + f_len;
281	296	return ret;
282	296	}
283
284		static int do_gcm_decrypt(EVP_CIPHER_CTX* cipher_ctx, const EVP_CIPHER* cipher,
285		const unsigned char* encrypt, uint32_t encrypt_length,
286		const unsigned char* encrypt_key, int iv_length,
287		unsigned char* decrypt_content, int* length_ptr, const unsigned char* aad,
288	0	uint32_t aad_length) {
289	0	if (encrypt_length < iv_length + EncryptionUtil::GCM_TAG_SIZE) {
290	0	return -1;
291	0	}
292	0	int ret = EVP_DecryptInit_ex(cipher_ctx, cipher, nullptr, nullptr, nullptr);
293	0	if (ret != 1) {
294	0	return ret;
295	0	}
296	0	ret = EVP_CIPHER_CTX_ctrl(cipher_ctx, EVP_CTRL_GCM_SET_IVLEN, iv_length, nullptr);
297	0	if (ret != 1) {
298	0	return ret;
299	0	}
300	0	ret = EVP_DecryptInit_ex(cipher_ctx, nullptr, nullptr, encrypt_key, encrypt);
301	0	if (ret != 1) {
302	0	return ret;
303	0	}
304	0	encrypt += iv_length;
305	0	if (aad) {
306	0	int tmp_len = 0;
307	0	ret = EVP_DecryptUpdate(cipher_ctx, nullptr, &tmp_len, aad, aad_length);
308	0	if (ret != 1) {
309	0	return ret;
310	0	}
311	0	}
312
313	0	uint32_t real_encrypt_length = encrypt_length - iv_length - EncryptionUtil::GCM_TAG_SIZE;
314	0	int u_len = 0;
315	0	ret = EVP_DecryptUpdate(cipher_ctx, decrypt_content, &u_len, encrypt, real_encrypt_length);
316	0	if (ret != 1) {
317	0	return ret;
318	0	}
319	0	encrypt += real_encrypt_length;
320	0	decrypt_content += u_len;
321
322	0	void* tag = const_cast<void>(reinterpret_cast<const void>(encrypt));
323	0	ret = EVP_CIPHER_CTX_ctrl(cipher_ctx, EVP_CTRL_GCM_SET_TAG, EncryptionUtil::GCM_TAG_SIZE, tag);
324	0	if (ret != 1) {
325	0	return ret;
326	0	}
327
328	0	int f_len = 0;
329	0	ret = EVP_DecryptFinal_ex(cipher_ctx, decrypt_content, &f_len);
330	0	*length_ptr = u_len + f_len;
331	0	return ret;
332	0	}
333
334		int EncryptionUtil::decrypt(EncryptionMode mode, const unsigned char* encrypt,
335		uint32_t encrypt_length, const unsigned char* key, uint32_t key_length,
336		const char* iv_str, int iv_input_length, bool padding,
337		unsigned char* decrypt_content, const unsigned char* aad,
338	296	uint32_t aad_length) {
339	296	const EVP_CIPHER* cipher = get_evp_type(mode);
340
341		/* The encrypt key to be used for decryption */
342	296	unsigned char encrypt_key[ENCRYPTION_MAX_KEY_LENGTH / 8];
343	296	create_key(key, key_length, encrypt_key, mode);
344
345	296	int iv_length = EVP_CIPHER_iv_length(cipher);
346	296	if (cipher == nullptr \|\| (iv_length > 0 && !iv_str)) {
347	0	return AES_BAD_DATA;
348	0	}
349	296	char* init_vec = nullptr;
350	296	std::string iv_default("DORISDORISDORIS_");
351
352	296	if (iv_str) {
353	248	init_vec = &iv_default[0];
354	248	memcpy(init_vec, iv_str, std::min(iv_input_length, EVP_MAX_IV_LENGTH));
355	248	init_vec[iv_length] = '\0';
356	248	}
357	296	EVP_CIPHER_CTX* cipher_ctx = EVP_CIPHER_CTX_new();
358	296	EVP_CIPHER_CTX_reset(cipher_ctx);
359	296	int length = 0;
360	296	int ret = 0;
361	296	if (is_gcm_mode(mode)) {
362	0	ret = do_gcm_decrypt(cipher_ctx, cipher, encrypt, encrypt_length, encrypt_key, iv_length,
363	0	decrypt_content, &length, aad, aad_length);
364	296	} else {
365	296	ret = do_decrypt(cipher_ctx, cipher, encrypt, encrypt_length, encrypt_key,
366	296	reinterpret_cast<unsigned char*>(init_vec), padding, decrypt_content,
367	296	&length);
368	296	}
369	296	EVP_CIPHER_CTX_free(cipher_ctx);
370	296	if (ret > 0) {
371	296	return length;
372	296	} else {
373	0	ERR_clear_error();
374	0	return AES_BAD_DATA;
375	0	}
376	296	}
377
378		} // namespace doris