/src/wolfssl-normal-math/wolfcrypt/src/wc_encrypt.c

Source
/* wc_encrypt.c
 *
 * Copyright (C) 2006-2026 wolfSSL Inc.
 *
 * This file is part of wolfSSL.
 *
 * wolfSSL is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3 of the License, or
 * (at your option) any later version.
 *
 * wolfSSL is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
 */

#include <wolfssl/wolfcrypt/libwolfssl_sources.h>

#include <wolfssl/wolfcrypt/aes.h>
#include <wolfssl/wolfcrypt/des3.h>
#include <wolfssl/wolfcrypt/hash.h>
#include <wolfssl/wolfcrypt/rc2.h>
#include <wolfssl/wolfcrypt/arc4.h>
#include <wolfssl/wolfcrypt/wc_encrypt.h>
#include <wolfssl/wolfcrypt/asn.h>
#include <wolfssl/wolfcrypt/coding.h>
#include <wolfssl/wolfcrypt/pwdbased.h>

#ifdef NO_INLINE
    #include <wolfssl/wolfcrypt/misc.h>
#else
    #define WOLFSSL_MISC_INCLUDED
    #include <wolfcrypt/src/misc.c>
#endif

#if !defined(NO_AES) && defined(HAVE_AES_CBC)
#ifdef HAVE_AES_DECRYPT
int wc_AesCbcDecryptWithKey(byte* out, const byte* in, word32 inSz,
                                  const byte* key, word32 keySz, const byte* iv)
{
    int  ret = 0;
    WC_DECLARE_VAR(aes, Aes, 1, 0);

    if (out == NULL || in == NULL || key == NULL || iv == NULL) {
        return BAD_FUNC_ARG;
    }

    WC_ALLOC_VAR_EX(aes, Aes, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
        return MEMORY_E);

    ret = wc_AesInit(aes, NULL, INVALID_DEVID);
    if (ret == 0) {
        ret = wc_AesSetKey(aes, key, keySz, iv, AES_DECRYPTION);
        if (ret == 0)
            ret = wc_AesCbcDecrypt(aes, out, in, inSz);

        wc_AesFree(aes);
    }

    WC_FREE_VAR_EX(aes, NULL, DYNAMIC_TYPE_TMP_BUFFER);

    return ret;
}
#endif /* HAVE_AES_DECRYPT */

int wc_AesCbcEncryptWithKey(byte* out, const byte* in, word32 inSz,
                            const byte* key, word32 keySz, const byte* iv)
{
    int  ret = 0;
    WC_DECLARE_VAR(aes, Aes, 1, 0);

    WC_ALLOC_VAR_EX(aes, Aes, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
        return MEMORY_E);

    ret = wc_AesInit(aes, NULL, INVALID_DEVID);
    if (ret == 0) {
        ret = wc_AesSetKey(aes, key, keySz, iv, AES_ENCRYPTION);
        if (ret == 0)
            ret = wc_AesCbcEncrypt(aes, out, in, inSz);

        wc_AesFree(aes);
    }

    WC_FREE_VAR_EX(aes, NULL, DYNAMIC_TYPE_TMP_BUFFER);

    return ret;
}
#endif /* !NO_AES && HAVE_AES_CBC */


#if !defined(NO_DES3) && !defined(WOLFSSL_TI_CRYPT)
int wc_Des_CbcEncryptWithKey(byte* out, const byte* in, word32 sz,
                             const byte* key, const byte* iv)
{
    int ret  = 0;
    WC_DECLARE_VAR(des, Des, 1, 0);

    if (out == NULL || in == NULL || key == NULL) {
        return BAD_FUNC_ARG;
    }

    WC_ALLOC_VAR_EX(des, Des, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
        return MEMORY_E);

    ret = wc_Des_SetKey(des, key, iv, DES_ENCRYPTION);
    if (ret == 0)
        ret = wc_Des_CbcEncrypt(des, out, in, sz);

    WC_FREE_VAR_EX(des, NULL, DYNAMIC_TYPE_TMP_BUFFER);

    return ret;
}

int wc_Des_CbcDecryptWithKey(byte* out, const byte* in, word32 sz,
                             const byte* key, const byte* iv)
{
    int ret  = 0;
    WC_DECLARE_VAR(des, Des, 1, 0);

    if (out == NULL || in == NULL || key == NULL) {
        return BAD_FUNC_ARG;
    }

    WC_ALLOC_VAR_EX(des, Des, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
        return MEMORY_E);

    ret = wc_Des_SetKey(des, key, iv, DES_DECRYPTION);
    if (ret == 0)
        ret = wc_Des_CbcDecrypt(des, out, in, sz);

    WC_FREE_VAR_EX(des, NULL, DYNAMIC_TYPE_TMP_BUFFER);

    return ret;
}


int wc_Des3_CbcEncryptWithKey(byte* out, const byte* in, word32 sz,
                              const byte* key, const byte* iv)
{
    int ret    = 0;
    WC_DECLARE_VAR(des3, Des3, 1, 0);

    WC_ALLOC_VAR_EX(des3, Des3, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
        return MEMORY_E);

    ret = wc_Des3Init(des3, NULL, INVALID_DEVID);
    if (ret == 0) {
        ret = wc_Des3_SetKey(des3, key, iv, DES_ENCRYPTION);
        if (ret == 0)
            ret = wc_Des3_CbcEncrypt(des3, out, in, sz);
        wc_Des3Free(des3);
    }

    WC_FREE_VAR_EX(des3, NULL, DYNAMIC_TYPE_TMP_BUFFER);

    return ret;
}


int wc_Des3_CbcDecryptWithKey(byte* out, const byte* in, word32 sz,
                              const byte* key, const byte* iv)
{
    int ret    = 0;
    WC_DECLARE_VAR(des3, Des3, 1, 0);

    WC_ALLOC_VAR_EX(des3, Des3, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
        return MEMORY_E);

    ret = wc_Des3Init(des3, NULL, INVALID_DEVID);
    if (ret == 0) {
        ret = wc_Des3_SetKey(des3, key, iv, DES_DECRYPTION);
        if (ret == 0)
            ret = wc_Des3_CbcDecrypt(des3, out, in, sz);
        wc_Des3Free(des3);
    }

    WC_FREE_VAR_EX(des3, NULL, DYNAMIC_TYPE_TMP_BUFFER);

    return ret;
}

#endif /* !NO_DES3 */


#if !defined(NO_ASN) && defined(WOLFSSL_ENCRYPTED_KEYS)

int wc_BufferKeyDecrypt(EncryptedInfo* info, byte* der, word32 derSz,
    const byte* password, int passwordSz, int hashType)
{
    int ret = WC_NO_ERR_TRACE(NOT_COMPILED_IN);
    WC_DECLARE_VAR(key, byte, WC_MAX_SYM_KEY_SIZE, 0);

    (void)derSz;
    (void)passwordSz;
    (void)hashType;

    if (der == NULL || password == NULL || info == NULL || info->keySz == 0) {
        return BAD_FUNC_ARG;
    }

    /* use file's salt for key derivation, hex decode first */
    if (Base16_Decode(info->iv, info->ivSz, info->iv, &info->ivSz) != 0) {
        WOLFSSL_ERROR_VERBOSE(BUFFER_E);
        return BUFFER_E;
    }
    if (info->ivSz < PKCS5_SALT_SZ) {
        WOLFSSL_ERROR_VERBOSE(BUFFER_E);
        return BUFFER_E;
    }

    WC_ALLOC_VAR_EX(key, byte, WC_MAX_SYM_KEY_SIZE, NULL,
        DYNAMIC_TYPE_SYMMETRIC_KEY, return MEMORY_E);
#ifdef WOLFSSL_CHECK_MEM_ZERO
    wc_MemZero_Add("wc_BufferKeyDecrypt key", key, WC_MAX_SYM_KEY_SIZE);
#endif

    (void)XMEMSET(key, 0, WC_MAX_SYM_KEY_SIZE);

#ifndef NO_PWDBASED
    if ((ret = wc_PBKDF1(key, password, passwordSz, info->iv, PKCS5_SALT_SZ, 1,
                                        (int)info->keySz, hashType)) != 0) {
#ifdef WOLFSSL_SMALL_STACK
        XFREE(key, NULL, DYNAMIC_TYPE_SYMMETRIC_KEY);
#elif defined(WOLFSSL_CHECK_MEM_ZERO)
        wc_MemZero_Check(key, WC_MAX_SYM_KEY_SIZE);
#endif
        return ret;
    }
#endif

#ifndef NO_DES3
    if (info->cipherType == WC_CIPHER_DES)
        ret = wc_Des_CbcDecryptWithKey(der, der, derSz, key, info->iv);
    if (info->cipherType == WC_CIPHER_DES3)
        ret = wc_Des3_CbcDecryptWithKey(der, der, derSz, key, info->iv);
#endif /* NO_DES3 */
#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(HAVE_AES_DECRYPT)
    if (info->cipherType == WC_CIPHER_AES_CBC)
        ret = wc_AesCbcDecryptWithKey(der, der, derSz, key, info->keySz,
            info->iv);
#endif /* !NO_AES && HAVE_AES_CBC && HAVE_AES_DECRYPT */

    ForceZero(key, WC_MAX_SYM_KEY_SIZE);
#ifdef WOLFSSL_SMALL_STACK
    XFREE(key, NULL, DYNAMIC_TYPE_SYMMETRIC_KEY);
#elif defined(WOLFSSL_CHECK_MEM_ZERO)
    wc_MemZero_Check(key, WC_MAX_SYM_KEY_SIZE);
#endif

    return ret;
}

int wc_BufferKeyEncrypt(EncryptedInfo* info, byte* der, word32 derSz,
    const byte* password, int passwordSz, int hashType)
{
    int ret = WC_NO_ERR_TRACE(NOT_COMPILED_IN);
    WC_DECLARE_VAR(key, byte, WC_MAX_SYM_KEY_SIZE, 0);

    (void)derSz;
    (void)passwordSz;
    (void)hashType;

    if (der == NULL || password == NULL || info == NULL || info->keySz == 0 ||
            info->ivSz < PKCS5_SALT_SZ) {
        return BAD_FUNC_ARG;
    }

    WC_ALLOC_VAR_EX(key, byte, WC_MAX_SYM_KEY_SIZE, NULL,
        DYNAMIC_TYPE_SYMMETRIC_KEY, return MEMORY_E);
#ifdef WOLFSSL_CHECK_MEM_ZERO
    XMEMSET(key, 0xff, WC_MAX_SYM_KEY_SIZE);
    wc_MemZero_Add("wc_BufferKeyDecrypt key", key, WC_MAX_SYM_KEY_SIZE);
#endif

    (void)XMEMSET(key, 0, WC_MAX_SYM_KEY_SIZE);

#ifndef NO_PWDBASED
    if ((ret = wc_PBKDF1(key, password, passwordSz, info->iv, PKCS5_SALT_SZ, 1,
                                        (int)info->keySz, hashType)) != 0) {
#ifdef WOLFSSL_SMALL_STACK
        XFREE(key, NULL, DYNAMIC_TYPE_SYMMETRIC_KEY);
#elif defined(WOLFSSL_CHECK_MEM_ZERO)
        wc_MemZero_Check(key, WC_MAX_SYM_KEY_SIZE);
#endif
        return ret;
    }
#endif

#ifndef NO_DES3
    if (info->cipherType == WC_CIPHER_DES)
        ret = wc_Des_CbcEncryptWithKey(der, der, derSz, key, info->iv);
    if (info->cipherType == WC_CIPHER_DES3)
        ret = wc_Des3_CbcEncryptWithKey(der, der, derSz, key, info->iv);
#endif /* NO_DES3 */
#if !defined(NO_AES) && defined(HAVE_AES_CBC)
    if (info->cipherType == WC_CIPHER_AES_CBC)
        ret = wc_AesCbcEncryptWithKey(der, der, derSz, key, info->keySz,
            info->iv);
#endif /* !NO_AES && HAVE_AES_CBC */

    ForceZero(key, WC_MAX_SYM_KEY_SIZE);
#ifdef WOLFSSL_SMALL_STACK
    XFREE(key, NULL, DYNAMIC_TYPE_SYMMETRIC_KEY);
#elif defined(WOLFSSL_CHECK_MEM_ZERO)
    wc_MemZero_Check(key, WC_MAX_SYM_KEY_SIZE);
#endif

    return ret;
}

#endif /* !NO_ASN && WOLFSSL_ENCRYPTED_KEYS */


#if !defined(NO_PWDBASED) && !defined(NO_ASN)

#if defined(HAVE_PKCS8) || defined(HAVE_PKCS12)
/* Decrypt/Encrypt input in place from parameters based on id
 *
 * returns a negative value on fail case
 */
int wc_CryptKey(const char* password, int passwordSz, const byte* salt,
                      int saltSz, int iterations, int id, byte* input,
                      int length, int version, byte* cbcIv, int enc, int shaOid)
{
    int typeH = WC_HASH_TYPE_NONE;
    word32 derivedLen = 0;
    int ret = 0;
    WC_DECLARE_VAR(key, byte, PKCS_MAX_KEY_SIZE, 0);

    (void)input;
    (void)length;
    (void)enc;

    WOLFSSL_ENTER("wc_CryptKey");

    if (password == NULL || salt == NULL || input == NULL)
        return BAD_FUNC_ARG;

    if (length < 0)
        return BAD_LENGTH_E;

    switch (id) {
    #ifndef NO_DES3
        #ifndef NO_MD5
        case PBE_MD5_DES:
            typeH = WC_MD5;
            derivedLen = 16;           /* may need iv for v1.5 */
            break;
        #endif
        #ifndef NO_SHA
        case PBE_SHA1_DES:
            typeH = WC_SHA;
            derivedLen = 16;           /* may need iv for v1.5 */
            break;
        #endif /* !NO_SHA */
        #if !defined(NO_SHA) || !defined(NO_SHA256)
        case PBE_SHA1_DES3:
            switch (shaOid) {
            #ifndef NO_SHA256
                case HMAC_SHA256_OID:
                    typeH = WC_SHA256;
                    derivedLen = 32;
                    break;
            #endif
            #ifndef NO_SHA
                default:
                    typeH = WC_SHA;
                    derivedLen = 32;           /* may need iv for v1.5 */
                    break;
            #endif
            }
        break;
        #endif
    #endif /* !NO_DES3 */
    #if !defined(NO_SHA) && !defined(NO_RC4)
        case PBE_SHA1_RC4_128:
            typeH = WC_SHA;
            derivedLen = 16;
            break;
    #endif
    #if defined(WOLFSSL_AES_256)
        case PBE_AES256_CBC:
            switch(shaOid) {
            #ifndef NO_SHA256
                case HMAC_SHA256_OID:
                    typeH = WC_SHA256;
                    derivedLen = 32;
                    break;
            #endif
            #ifndef NO_SHA
                default:
                    typeH = WC_SHA;
                    derivedLen = 32;
                    break;
            #endif
            }
            break;
    #endif /* WOLFSSL_AES_256 && !NO_SHA */
    #if defined(WOLFSSL_AES_128)
        case PBE_AES128_CBC:
            switch(shaOid) {
            #ifndef NO_SHA256
                case HMAC_SHA256_OID:
                    typeH = WC_SHA256;
                    derivedLen = 16;
                    break;
            #endif
            #ifndef NO_SHA
                default:
                    typeH = WC_SHA;
                    derivedLen = 16;
                    break;
            #endif
            }
            break;
    #endif /* WOLFSSL_AES_128 && !NO_SHA */
    #ifdef WC_RC2
        case PBE_SHA1_40RC2_CBC:
            typeH = WC_SHA;
            derivedLen = 5;
            break;
    #endif
        default:
            WOLFSSL_MSG("Unknown/Unsupported encrypt/decrypt id");
            (void)shaOid;
            ret = ALGO_ID_E;
            WOLFSSL_ERROR_VERBOSE(ret);
    }

    #ifdef WOLFSSL_SMALL_STACK
    if (ret == 0) {
        key = (byte*)XMALLOC(PKCS_MAX_KEY_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
        if (key == NULL)
            ret = MEMORY_E;
    }
    #endif

    if (ret == 0) {
    #ifdef WOLFSSL_CHECK_MEM_ZERO
        XMEMSET(key, 0xff, PKCS_MAX_KEY_SIZE);
        wc_MemZero_Add("wc_CryptKey key", key, PKCS_MAX_KEY_SIZE);
    #endif

        switch (version) {
    #ifndef NO_HMAC
            case PKCS5v2:
                PRIVATE_KEY_UNLOCK();
                ret = wc_PBKDF2(key, (const byte*)password, passwordSz,
                                salt, saltSz, iterations, (int)derivedLen, typeH);
                PRIVATE_KEY_LOCK();
                break;
    #endif
    #ifndef NO_SHA
            case PKCS5:
                ret = wc_PBKDF1(key, (const byte*)password, passwordSz,
                                salt, saltSz, iterations, (int)derivedLen, typeH);
                break;
    #endif
    #ifdef HAVE_PKCS12
            case PKCS12v1:
            {
                int  i, idx = 0;
                byte unicodePasswd[MAX_UNICODE_SZ];

                if (passwordSz < 0 ||
                    passwordSz >= MAX_UNICODE_SZ ||
                   (passwordSz * 2 + 2) > MAX_UNICODE_SZ) {
                    ret = UNICODE_SIZE_E;
                    break;
                }

                for (i = 0; i < passwordSz; i++) {
                    unicodePasswd[idx++] = 0x00;
                    unicodePasswd[idx++] = (byte)password[i];
                }
                /* add trailing NULL */
                unicodePasswd[idx++] = 0x00;
                unicodePasswd[idx++] = 0x00;

                ret =  wc_PKCS12_PBKDF(key, unicodePasswd, idx, salt, saltSz,
                                    iterations, (int)derivedLen, typeH, 1);
                if (ret < 0) {
                    ForceZero(unicodePasswd, MAX_UNICODE_SZ);
                    break;
                }
                if (id != PBE_SHA1_RC4_128) {
                    i = ret;
                    ret = wc_PKCS12_PBKDF(cbcIv, unicodePasswd, idx, salt,
                                    saltSz, iterations, 8, typeH, 2);
                    if (ret < 0) {
                        ForceZero(unicodePasswd, MAX_UNICODE_SZ);
                        break;
                    }
                    ret += i;
                }
                ForceZero(unicodePasswd, MAX_UNICODE_SZ);
                break;
            }
    #endif /* HAVE_PKCS12 */
            default:
                WOLFSSL_MSG("Unknown/Unsupported PKCS version");
                ret = ALGO_ID_E;
                WOLFSSL_ERROR_VERBOSE(ret);
        } /* switch (version) */
    }

    if (ret == 0) {
        switch (id) {
    #ifndef NO_DES3
        #if !defined(NO_SHA) || !defined(NO_MD5)
            case PBE_MD5_DES:
            case PBE_SHA1_DES:
            {
                Des    des;
                byte*  desIv = key + 8;

                if (version == PKCS5v2 || version == PKCS12v1)
                    desIv = cbcIv;

                if (enc) {
                    ret = wc_Des_SetKey(&des, key, desIv, DES_ENCRYPTION);
                }
                else {
                    ret = wc_Des_SetKey(&des, key, desIv, DES_DECRYPTION);
                }
                if (ret == 0) {
                    if (enc) {
                        wc_Des_CbcEncrypt(&des, input, input, (word32)length);
                    }
                    else {
                        wc_Des_CbcDecrypt(&des, input, input, (word32)length);
                    }
                }
                ForceZero(&des, sizeof(Des));
                break;
            }
        #endif /* !NO_SHA || !NO_MD5 */

        #ifndef NO_SHA
            case PBE_SHA1_DES3:
            {
                Des3   des;
                byte*  desIv = key + 24;

                if (version == PKCS5v2 || version == PKCS12v1)
                    desIv = cbcIv;

                ret = wc_Des3Init(&des, NULL, INVALID_DEVID);
                if (ret != 0) {
                    break;
                }
                if (enc) {
                    ret = wc_Des3_SetKey(&des, key, desIv, DES_ENCRYPTION);
                }
                else {
                    ret = wc_Des3_SetKey(&des, key, desIv, DES_DECRYPTION);
                }
                if (ret == 0) {
                    if (enc) {
                        ret = wc_Des3_CbcEncrypt(&des, input, input, (word32)length);
                    }
                    else {
                        ret = wc_Des3_CbcDecrypt(&des, input, input, (word32)length);
                    }
                }
                wc_Des3Free(&des);
                break;
            }
        #endif /* !NO_SHA */
    #endif
    #if !defined(NO_RC4) && !defined(NO_SHA)
            case PBE_SHA1_RC4_128:
            {
                Arc4    dec;

                wc_Arc4SetKey(&dec, key, derivedLen);
                wc_Arc4Process(&dec, input, input, (word32)length);
                ForceZero(&dec, sizeof(Arc4));
                break;
            }
    #endif
    #if !defined(NO_AES) && defined(HAVE_AES_CBC) && \
        (defined(WOLFSSL_AES_256) || defined(WOLFSSL_AES_128))
        #ifdef WOLFSSL_AES_256
            case PBE_AES256_CBC:
        #endif /* WOLFSSL_AES_256 */
        #ifdef WOLFSSL_AES_128
            case PBE_AES128_CBC:
        #endif /* WOLFSSL_AES_128 */
            {
                int free_aes;

            #ifdef WOLFSSL_SMALL_STACK
                Aes *aes;
                aes = (Aes *)XMALLOC(sizeof *aes, NULL, DYNAMIC_TYPE_AES);
                if (aes == NULL) {
                    ret = MEMORY_E;
                    break;
                }
            #else
                Aes aes[1];
            #endif
                free_aes = 0;
                ret = wc_AesInit(aes, NULL, INVALID_DEVID);
                if (ret == 0) {
                    free_aes = 1;
                    if (enc) {
                        ret = wc_AesSetKey(aes, key, derivedLen, cbcIv,
                                                            AES_ENCRYPTION);
                    }
                    else {
                    #ifdef HAVE_AES_DECRYPT
                        ret = wc_AesSetKey(aes, key, derivedLen, cbcIv,
                                                            AES_DECRYPTION);
                    #else
                        ret = NOT_COMPILED_IN;
                    #endif
                    }
                }
                if (ret == 0) {
                    if (enc)
                        ret = wc_AesCbcEncrypt(aes, input, input, (word32)length);
                    #ifdef HAVE_AES_DECRYPT
                    else
                        ret = wc_AesCbcDecrypt(aes, input, input, (word32)length);
                    #endif
                }
                if (free_aes)
                    wc_AesFree(aes);
                ForceZero(aes, sizeof(Aes));
                WC_FREE_VAR_EX(aes, NULL, DYNAMIC_TYPE_AES);
                break;
            }
    #endif /* !NO_AES && HAVE_AES_CBC && (WOLFSSL_AES_256 || WOLFSSL_AES_128) */
    #ifdef WC_RC2
            case PBE_SHA1_40RC2_CBC:
            {
                Rc2 rc2;
                /* effective key size for RC2-40-CBC is 40 bits */
                ret = wc_Rc2SetKey(&rc2, key, derivedLen, cbcIv, 40);
                if (ret == 0) {
                    if (enc)
                        ret = wc_Rc2CbcEncrypt(&rc2, input, input, length);
                    else
                        ret = wc_Rc2CbcDecrypt(&rc2, input, input, length);
                }
                wc_Rc2Free(&rc2);
                break;
            }
    #endif

            default:
                WOLFSSL_MSG("Unknown/Unsupported encrypt/decryption algorithm");
                ret = ALGO_ID_E;
                WOLFSSL_ERROR_VERBOSE(ret);
        }
    }

#ifdef WOLFSSL_SMALL_STACK
    if (key != NULL)
#endif
    {
        ForceZero(key, PKCS_MAX_KEY_SIZE);
    #ifdef WOLFSSL_SMALL_STACK
        XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
    #elif defined(WOLFSSL_CHECK_MEM_ZERO)
        wc_MemZero_Check(key, PKCS_MAX_KEY_SIZE);
    #endif
    }

    return ret;
}

#endif /* HAVE_PKCS8 || HAVE_PKCS12 */
#endif /* !NO_PWDBASED && !NO_ASN */

Coverage Report

Created: 2026-05-18 06:53

Line	Count	Source
1		/* wc_encrypt.c
2		*
3		* Copyright (C) 2006-2026 wolfSSL Inc.
4		*
5		* This file is part of wolfSSL.
6		*
7		* wolfSSL is free software; you can redistribute it and/or modify
8		* it under the terms of the GNU General Public License as published by
9		* the Free Software Foundation; either version 3 of the License, or
10		* (at your option) any later version.
11		*
12		* wolfSSL is distributed in the hope that it will be useful,
13		* but WITHOUT ANY WARRANTY; without even the implied warranty of
14		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15		* GNU General Public License for more details.
16		*
17		* You should have received a copy of the GNU General Public License
18		* along with this program; if not, write to the Free Software
19		* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335, USA
20		*/
21
22		#include <wolfssl/wolfcrypt/libwolfssl_sources.h>
23
24		#include <wolfssl/wolfcrypt/aes.h>
25		#include <wolfssl/wolfcrypt/des3.h>
26		#include <wolfssl/wolfcrypt/hash.h>
27		#include <wolfssl/wolfcrypt/rc2.h>
28		#include <wolfssl/wolfcrypt/arc4.h>
29		#include <wolfssl/wolfcrypt/wc_encrypt.h>
30		#include <wolfssl/wolfcrypt/asn.h>
31		#include <wolfssl/wolfcrypt/coding.h>
32		#include <wolfssl/wolfcrypt/pwdbased.h>
33
34		#ifdef NO_INLINE
35		#include <wolfssl/wolfcrypt/misc.h>
36		#else
37		#define WOLFSSL_MISC_INCLUDED
38		#include <wolfcrypt/src/misc.c>
39		#endif
40
41		#if !defined(NO_AES) && defined(HAVE_AES_CBC)
42		#ifdef HAVE_AES_DECRYPT
43		int wc_AesCbcDecryptWithKey(byte* out, const byte* in, word32 inSz,
44		const byte* key, word32 keySz, const byte* iv)
45	0	{
46	0	int ret = 0;
47	0	WC_DECLARE_VAR(aes, Aes, 1, 0);
48
49	0	if (out == NULL \|\| in == NULL \|\| key == NULL \|\| iv == NULL) {
50	0	return BAD_FUNC_ARG;
51	0	}
52
53	0	WC_ALLOC_VAR_EX(aes, Aes, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
54	0	return MEMORY_E);
55
56	0	ret = wc_AesInit(aes, NULL, INVALID_DEVID);
57	0	if (ret == 0) {
58	0	ret = wc_AesSetKey(aes, key, keySz, iv, AES_DECRYPTION);
59	0	if (ret == 0)
60	0	ret = wc_AesCbcDecrypt(aes, out, in, inSz);
61
62	0	wc_AesFree(aes);
63	0	}
64
65	0	WC_FREE_VAR_EX(aes, NULL, DYNAMIC_TYPE_TMP_BUFFER);
66
67	0	return ret;
68	0	}
69		#endif /* HAVE_AES_DECRYPT */
70
71		int wc_AesCbcEncryptWithKey(byte* out, const byte* in, word32 inSz,
72		const byte* key, word32 keySz, const byte* iv)
73	0	{
74	0	int ret = 0;
75	0	WC_DECLARE_VAR(aes, Aes, 1, 0);
76
77	0	WC_ALLOC_VAR_EX(aes, Aes, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
78	0	return MEMORY_E);
79
80	0	ret = wc_AesInit(aes, NULL, INVALID_DEVID);
81	0	if (ret == 0) {
82	0	ret = wc_AesSetKey(aes, key, keySz, iv, AES_ENCRYPTION);
83	0	if (ret == 0)
84	0	ret = wc_AesCbcEncrypt(aes, out, in, inSz);
85
86	0	wc_AesFree(aes);
87	0	}
88
89	0	WC_FREE_VAR_EX(aes, NULL, DYNAMIC_TYPE_TMP_BUFFER);
90
91	0	return ret;
92	0	}
93		#endif /* !NO_AES && HAVE_AES_CBC */
94
95
96		#if !defined(NO_DES3) && !defined(WOLFSSL_TI_CRYPT)
97		int wc_Des_CbcEncryptWithKey(byte* out, const byte* in, word32 sz,
98		const byte* key, const byte* iv)
99	0	{
100	0	int ret = 0;
101	0	WC_DECLARE_VAR(des, Des, 1, 0);
102
103	0	if (out == NULL \|\| in == NULL \|\| key == NULL) {
104	0	return BAD_FUNC_ARG;
105	0	}
106
107	0	WC_ALLOC_VAR_EX(des, Des, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
108	0	return MEMORY_E);
109
110	0	ret = wc_Des_SetKey(des, key, iv, DES_ENCRYPTION);
111	0	if (ret == 0)
112	0	ret = wc_Des_CbcEncrypt(des, out, in, sz);
113
114	0	WC_FREE_VAR_EX(des, NULL, DYNAMIC_TYPE_TMP_BUFFER);
115
116	0	return ret;
117	0	}
118
119		int wc_Des_CbcDecryptWithKey(byte* out, const byte* in, word32 sz,
120		const byte* key, const byte* iv)
121	0	{
122	0	int ret = 0;
123	0	WC_DECLARE_VAR(des, Des, 1, 0);
124
125	0	if (out == NULL \|\| in == NULL \|\| key == NULL) {
126	0	return BAD_FUNC_ARG;
127	0	}
128
129	0	WC_ALLOC_VAR_EX(des, Des, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
130	0	return MEMORY_E);
131
132	0	ret = wc_Des_SetKey(des, key, iv, DES_DECRYPTION);
133	0	if (ret == 0)
134	0	ret = wc_Des_CbcDecrypt(des, out, in, sz);
135
136	0	WC_FREE_VAR_EX(des, NULL, DYNAMIC_TYPE_TMP_BUFFER);
137
138	0	return ret;
139	0	}
140
141
142		int wc_Des3_CbcEncryptWithKey(byte* out, const byte* in, word32 sz,
143		const byte* key, const byte* iv)
144	0	{
145	0	int ret = 0;
146	0	WC_DECLARE_VAR(des3, Des3, 1, 0);
147
148	0	WC_ALLOC_VAR_EX(des3, Des3, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
149	0	return MEMORY_E);
150
151	0	ret = wc_Des3Init(des3, NULL, INVALID_DEVID);
152	0	if (ret == 0) {
153	0	ret = wc_Des3_SetKey(des3, key, iv, DES_ENCRYPTION);
154	0	if (ret == 0)
155	0	ret = wc_Des3_CbcEncrypt(des3, out, in, sz);
156	0	wc_Des3Free(des3);
157	0	}
158
159	0	WC_FREE_VAR_EX(des3, NULL, DYNAMIC_TYPE_TMP_BUFFER);
160
161	0	return ret;
162	0	}
163
164
165		int wc_Des3_CbcDecryptWithKey(byte* out, const byte* in, word32 sz,
166		const byte* key, const byte* iv)
167	0	{
168	0	int ret = 0;
169	0	WC_DECLARE_VAR(des3, Des3, 1, 0);
170
171	0	WC_ALLOC_VAR_EX(des3, Des3, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
172	0	return MEMORY_E);
173
174	0	ret = wc_Des3Init(des3, NULL, INVALID_DEVID);
175	0	if (ret == 0) {
176	0	ret = wc_Des3_SetKey(des3, key, iv, DES_DECRYPTION);
177	0	if (ret == 0)
178	0	ret = wc_Des3_CbcDecrypt(des3, out, in, sz);
179	0	wc_Des3Free(des3);
180	0	}
181
182	0	WC_FREE_VAR_EX(des3, NULL, DYNAMIC_TYPE_TMP_BUFFER);
183
184	0	return ret;
185	0	}
186
187		#endif /* !NO_DES3 */
188
189
190		#if !defined(NO_ASN) && defined(WOLFSSL_ENCRYPTED_KEYS)
191
192		int wc_BufferKeyDecrypt(EncryptedInfo* info, byte* der, word32 derSz,
193		const byte* password, int passwordSz, int hashType)
194		{
195		int ret = WC_NO_ERR_TRACE(NOT_COMPILED_IN);
196		WC_DECLARE_VAR(key, byte, WC_MAX_SYM_KEY_SIZE, 0);
197
198		(void)derSz;
199		(void)passwordSz;
200		(void)hashType;
201
202		if (der == NULL \|\| password == NULL \|\| info == NULL \|\| info->keySz == 0) {
203		return BAD_FUNC_ARG;
204		}
205
206		/* use file's salt for key derivation, hex decode first */
207		if (Base16_Decode(info->iv, info->ivSz, info->iv, &info->ivSz) != 0) {
208		WOLFSSL_ERROR_VERBOSE(BUFFER_E);
209		return BUFFER_E;
210		}
211		if (info->ivSz < PKCS5_SALT_SZ) {
212		WOLFSSL_ERROR_VERBOSE(BUFFER_E);
213		return BUFFER_E;
214		}
215
216		WC_ALLOC_VAR_EX(key, byte, WC_MAX_SYM_KEY_SIZE, NULL,
217		DYNAMIC_TYPE_SYMMETRIC_KEY, return MEMORY_E);
218		#ifdef WOLFSSL_CHECK_MEM_ZERO
219		wc_MemZero_Add("wc_BufferKeyDecrypt key", key, WC_MAX_SYM_KEY_SIZE);
220		#endif
221
222		(void)XMEMSET(key, 0, WC_MAX_SYM_KEY_SIZE);
223
224		#ifndef NO_PWDBASED
225		if ((ret = wc_PBKDF1(key, password, passwordSz, info->iv, PKCS5_SALT_SZ, 1,
226		(int)info->keySz, hashType)) != 0) {
227		#ifdef WOLFSSL_SMALL_STACK
228		XFREE(key, NULL, DYNAMIC_TYPE_SYMMETRIC_KEY);
229		#elif defined(WOLFSSL_CHECK_MEM_ZERO)
230		wc_MemZero_Check(key, WC_MAX_SYM_KEY_SIZE);
231		#endif
232		return ret;
233		}
234		#endif
235
236		#ifndef NO_DES3
237		if (info->cipherType == WC_CIPHER_DES)
238		ret = wc_Des_CbcDecryptWithKey(der, der, derSz, key, info->iv);
239		if (info->cipherType == WC_CIPHER_DES3)
240		ret = wc_Des3_CbcDecryptWithKey(der, der, derSz, key, info->iv);
241		#endif /* NO_DES3 */
242		#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(HAVE_AES_DECRYPT)
243		if (info->cipherType == WC_CIPHER_AES_CBC)
244		ret = wc_AesCbcDecryptWithKey(der, der, derSz, key, info->keySz,
245		info->iv);
246		#endif /* !NO_AES && HAVE_AES_CBC && HAVE_AES_DECRYPT */
247
248		ForceZero(key, WC_MAX_SYM_KEY_SIZE);
249		#ifdef WOLFSSL_SMALL_STACK
250		XFREE(key, NULL, DYNAMIC_TYPE_SYMMETRIC_KEY);
251		#elif defined(WOLFSSL_CHECK_MEM_ZERO)
252		wc_MemZero_Check(key, WC_MAX_SYM_KEY_SIZE);
253		#endif
254
255		return ret;
256		}
257
258		int wc_BufferKeyEncrypt(EncryptedInfo* info, byte* der, word32 derSz,
259		const byte* password, int passwordSz, int hashType)
260		{
261		int ret = WC_NO_ERR_TRACE(NOT_COMPILED_IN);
262		WC_DECLARE_VAR(key, byte, WC_MAX_SYM_KEY_SIZE, 0);
263
264		(void)derSz;
265		(void)passwordSz;
266		(void)hashType;
267
268		if (der == NULL \|\| password == NULL \|\| info == NULL \|\| info->keySz == 0 \|\|
269		info->ivSz < PKCS5_SALT_SZ) {
270		return BAD_FUNC_ARG;
271		}
272
273		WC_ALLOC_VAR_EX(key, byte, WC_MAX_SYM_KEY_SIZE, NULL,
274		DYNAMIC_TYPE_SYMMETRIC_KEY, return MEMORY_E);
275		#ifdef WOLFSSL_CHECK_MEM_ZERO
276		XMEMSET(key, 0xff, WC_MAX_SYM_KEY_SIZE);
277		wc_MemZero_Add("wc_BufferKeyDecrypt key", key, WC_MAX_SYM_KEY_SIZE);
278		#endif
279
280		(void)XMEMSET(key, 0, WC_MAX_SYM_KEY_SIZE);
281
282		#ifndef NO_PWDBASED
283		if ((ret = wc_PBKDF1(key, password, passwordSz, info->iv, PKCS5_SALT_SZ, 1,
284		(int)info->keySz, hashType)) != 0) {
285		#ifdef WOLFSSL_SMALL_STACK
286		XFREE(key, NULL, DYNAMIC_TYPE_SYMMETRIC_KEY);
287		#elif defined(WOLFSSL_CHECK_MEM_ZERO)
288		wc_MemZero_Check(key, WC_MAX_SYM_KEY_SIZE);
289		#endif
290		return ret;
291		}
292		#endif
293
294		#ifndef NO_DES3
295		if (info->cipherType == WC_CIPHER_DES)
296		ret = wc_Des_CbcEncryptWithKey(der, der, derSz, key, info->iv);
297		if (info->cipherType == WC_CIPHER_DES3)
298		ret = wc_Des3_CbcEncryptWithKey(der, der, derSz, key, info->iv);
299		#endif /* NO_DES3 */
300		#if !defined(NO_AES) && defined(HAVE_AES_CBC)
301		if (info->cipherType == WC_CIPHER_AES_CBC)
302		ret = wc_AesCbcEncryptWithKey(der, der, derSz, key, info->keySz,
303		info->iv);
304		#endif /* !NO_AES && HAVE_AES_CBC */
305
306		ForceZero(key, WC_MAX_SYM_KEY_SIZE);
307		#ifdef WOLFSSL_SMALL_STACK
308		XFREE(key, NULL, DYNAMIC_TYPE_SYMMETRIC_KEY);
309		#elif defined(WOLFSSL_CHECK_MEM_ZERO)
310		wc_MemZero_Check(key, WC_MAX_SYM_KEY_SIZE);
311		#endif
312
313		return ret;
314		}
315
316		#endif /* !NO_ASN && WOLFSSL_ENCRYPTED_KEYS */
317
318
319		#if !defined(NO_PWDBASED) && !defined(NO_ASN)
320
321		#if defined(HAVE_PKCS8) \|\| defined(HAVE_PKCS12)
322		/* Decrypt/Encrypt input in place from parameters based on id
323		*
324		* returns a negative value on fail case
325		*/
326		int wc_CryptKey(const char* password, int passwordSz, const byte* salt,
327		int saltSz, int iterations, int id, byte* input,
328		int length, int version, byte* cbcIv, int enc, int shaOid)
329	0	{
330	0	int typeH = WC_HASH_TYPE_NONE;
331	0	word32 derivedLen = 0;
332	0	int ret = 0;
333	0	WC_DECLARE_VAR(key, byte, PKCS_MAX_KEY_SIZE, 0);
334
335	0	(void)input;
336	0	(void)length;
337	0	(void)enc;
338
339	0	WOLFSSL_ENTER("wc_CryptKey");
340
341	0	if (password == NULL \|\| salt == NULL \|\| input == NULL)
342	0	return BAD_FUNC_ARG;
343
344	0	if (length < 0)
345	0	return BAD_LENGTH_E;
346
347	0	switch (id) {
348	0	#ifndef NO_DES3
349	0	#ifndef NO_MD5
350	0	case PBE_MD5_DES:
351	0	typeH = WC_MD5;
352	0	derivedLen = 16; /* may need iv for v1.5 */
353	0	break;
354	0	#endif
355	0	#ifndef NO_SHA
356	0	case PBE_SHA1_DES:
357	0	typeH = WC_SHA;
358	0	derivedLen = 16; /* may need iv for v1.5 */
359	0	break;
360	0	#endif /* !NO_SHA */
361	0	#if !defined(NO_SHA) \|\| !defined(NO_SHA256)
362	0	case PBE_SHA1_DES3:
363	0	switch (shaOid) {
364	0	#ifndef NO_SHA256
365	0	case HMAC_SHA256_OID:
366	0	typeH = WC_SHA256;
367	0	derivedLen = 32;
368	0	break;
369	0	#endif
370	0	#ifndef NO_SHA
371	0	default:
372	0	typeH = WC_SHA;
373	0	derivedLen = 32; /* may need iv for v1.5 */
374	0	break;
375	0	#endif
376	0	}
377	0	break;
378	0	#endif
379	0	#endif /* !NO_DES3 */
380	0	#if !defined(NO_SHA) && !defined(NO_RC4)
381	0	case PBE_SHA1_RC4_128:
382	0	typeH = WC_SHA;
383	0	derivedLen = 16;
384	0	break;
385	0	#endif
386	0	#if defined(WOLFSSL_AES_256)
387	0	case PBE_AES256_CBC:
388	0	switch(shaOid) {
389	0	#ifndef NO_SHA256
390	0	case HMAC_SHA256_OID:
391	0	typeH = WC_SHA256;
392	0	derivedLen = 32;
393	0	break;
394	0	#endif
395	0	#ifndef NO_SHA
396	0	default:
397	0	typeH = WC_SHA;
398	0	derivedLen = 32;
399	0	break;
400	0	#endif
401	0	}
402	0	break;
403	0	#endif /* WOLFSSL_AES_256 && !NO_SHA */
404	0	#if defined(WOLFSSL_AES_128)
405	0	case PBE_AES128_CBC:
406	0	switch(shaOid) {
407	0	#ifndef NO_SHA256
408	0	case HMAC_SHA256_OID:
409	0	typeH = WC_SHA256;
410	0	derivedLen = 16;
411	0	break;
412	0	#endif
413	0	#ifndef NO_SHA
414	0	default:
415	0	typeH = WC_SHA;
416	0	derivedLen = 16;
417	0	break;
418	0	#endif
419	0	}
420	0	break;
421	0	#endif /* WOLFSSL_AES_128 && !NO_SHA */
422		#ifdef WC_RC2
423		case PBE_SHA1_40RC2_CBC:
424		typeH = WC_SHA;
425		derivedLen = 5;
426		break;
427		#endif
428	0	default:
429	0	WOLFSSL_MSG("Unknown/Unsupported encrypt/decrypt id");
430	0	(void)shaOid;
431	0	ret = ALGO_ID_E;
432	0	WOLFSSL_ERROR_VERBOSE(ret);
433	0	}
434
435	0	#ifdef WOLFSSL_SMALL_STACK
436	0	if (ret == 0) {
437	0	key = (byte*)XMALLOC(PKCS_MAX_KEY_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
438	0	if (key == NULL)
439	0	ret = MEMORY_E;
440	0	}
441	0	#endif
442
443	0	if (ret == 0) {
444		#ifdef WOLFSSL_CHECK_MEM_ZERO
445		XMEMSET(key, 0xff, PKCS_MAX_KEY_SIZE);
446		wc_MemZero_Add("wc_CryptKey key", key, PKCS_MAX_KEY_SIZE);
447		#endif
448
449	0	switch (version) {
450	0	#ifndef NO_HMAC
451	0	case PKCS5v2:
452	0	PRIVATE_KEY_UNLOCK();
453	0	ret = wc_PBKDF2(key, (const byte*)password, passwordSz,
454	0	salt, saltSz, iterations, (int)derivedLen, typeH);
455	0	PRIVATE_KEY_LOCK();
456	0	break;
457	0	#endif
458	0	#ifndef NO_SHA
459	0	case PKCS5:
460	0	ret = wc_PBKDF1(key, (const byte*)password, passwordSz,
461	0	salt, saltSz, iterations, (int)derivedLen, typeH);
462	0	break;
463	0	#endif
464	0	#ifdef HAVE_PKCS12
465	0	case PKCS12v1:
466	0	{
467	0	int i, idx = 0;
468	0	byte unicodePasswd[MAX_UNICODE_SZ];
469
470	0	if (passwordSz < 0 \|\|
471	0	passwordSz >= MAX_UNICODE_SZ \|\|
472	0	(passwordSz * 2 + 2) > MAX_UNICODE_SZ) {
473	0	ret = UNICODE_SIZE_E;
474	0	break;
475	0	}
476
477	0	for (i = 0; i < passwordSz; i++) {
478	0	unicodePasswd[idx++] = 0x00;
479	0	unicodePasswd[idx++] = (byte)password[i];
480	0	}
481		/* add trailing NULL */
482	0	unicodePasswd[idx++] = 0x00;
483	0	unicodePasswd[idx++] = 0x00;
484
485	0	ret = wc_PKCS12_PBKDF(key, unicodePasswd, idx, salt, saltSz,
486	0	iterations, (int)derivedLen, typeH, 1);
487	0	if (ret < 0) {
488	0	ForceZero(unicodePasswd, MAX_UNICODE_SZ);
489	0	break;
490	0	}
491	0	if (id != PBE_SHA1_RC4_128) {
492	0	i = ret;
493	0	ret = wc_PKCS12_PBKDF(cbcIv, unicodePasswd, idx, salt,
494	0	saltSz, iterations, 8, typeH, 2);
495	0	if (ret < 0) {
496	0	ForceZero(unicodePasswd, MAX_UNICODE_SZ);
497	0	break;
498	0	}
499	0	ret += i;
500	0	}
501	0	ForceZero(unicodePasswd, MAX_UNICODE_SZ);
502	0	break;
503	0	}
504	0	#endif /* HAVE_PKCS12 */
505	0	default:
506	0	WOLFSSL_MSG("Unknown/Unsupported PKCS version");
507	0	ret = ALGO_ID_E;
508	0	WOLFSSL_ERROR_VERBOSE(ret);
509	0	} /* switch (version) */
510	0	}
511
512	0	if (ret == 0) {
513	0	switch (id) {
514	0	#ifndef NO_DES3
515	0	#if !defined(NO_SHA) \|\| !defined(NO_MD5)
516	0	case PBE_MD5_DES:
517	0	case PBE_SHA1_DES:
518	0	{
519	0	Des des;
520	0	byte* desIv = key + 8;
521
522	0	if (version == PKCS5v2 \|\| version == PKCS12v1)
523	0	desIv = cbcIv;
524
525	0	if (enc) {
526	0	ret = wc_Des_SetKey(&des, key, desIv, DES_ENCRYPTION);
527	0	}
528	0	else {
529	0	ret = wc_Des_SetKey(&des, key, desIv, DES_DECRYPTION);
530	0	}
531	0	if (ret == 0) {
532	0	if (enc) {
533	0	wc_Des_CbcEncrypt(&des, input, input, (word32)length);
534	0	}
535	0	else {
536	0	wc_Des_CbcDecrypt(&des, input, input, (word32)length);
537	0	}
538	0	}
539	0	ForceZero(&des, sizeof(Des));
540	0	break;
541	0	}
542	0	#endif /* !NO_SHA \|\| !NO_MD5 */
543
544	0	#ifndef NO_SHA
545	0	case PBE_SHA1_DES3:
546	0	{
547	0	Des3 des;
548	0	byte* desIv = key + 24;
549
550	0	if (version == PKCS5v2 \|\| version == PKCS12v1)
551	0	desIv = cbcIv;
552
553	0	ret = wc_Des3Init(&des, NULL, INVALID_DEVID);
554	0	if (ret != 0) {
555	0	break;
556	0	}
557	0	if (enc) {
558	0	ret = wc_Des3_SetKey(&des, key, desIv, DES_ENCRYPTION);
559	0	}
560	0	else {
561	0	ret = wc_Des3_SetKey(&des, key, desIv, DES_DECRYPTION);
562	0	}
563	0	if (ret == 0) {
564	0	if (enc) {
565	0	ret = wc_Des3_CbcEncrypt(&des, input, input, (word32)length);
566	0	}
567	0	else {
568	0	ret = wc_Des3_CbcDecrypt(&des, input, input, (word32)length);
569	0	}
570	0	}
571	0	wc_Des3Free(&des);
572	0	break;
573	0	}
574	0	#endif /* !NO_SHA */
575	0	#endif
576	0	#if !defined(NO_RC4) && !defined(NO_SHA)
577	0	case PBE_SHA1_RC4_128:
578	0	{
579	0	Arc4 dec;
580
581	0	wc_Arc4SetKey(&dec, key, derivedLen);
582	0	wc_Arc4Process(&dec, input, input, (word32)length);
583	0	ForceZero(&dec, sizeof(Arc4));
584	0	break;
585	0	}
586	0	#endif
587	0	#if !defined(NO_AES) && defined(HAVE_AES_CBC) && \
588	0	(defined(WOLFSSL_AES_256) \|\| defined(WOLFSSL_AES_128))
589	0	#ifdef WOLFSSL_AES_256
590	0	case PBE_AES256_CBC:
591	0	#endif /* WOLFSSL_AES_256 */
592	0	#ifdef WOLFSSL_AES_128
593	0	case PBE_AES128_CBC:
594	0	#endif /* WOLFSSL_AES_128 */
595	0	{
596	0	int free_aes;
597
598	0	#ifdef WOLFSSL_SMALL_STACK
599	0	Aes *aes;
600	0	aes = (Aes )XMALLOC(sizeof aes, NULL, DYNAMIC_TYPE_AES);
601	0	if (aes == NULL) {
602	0	ret = MEMORY_E;
603	0	break;
604	0	}
605		#else
606		Aes aes[1];
607		#endif
608	0	free_aes = 0;
609	0	ret = wc_AesInit(aes, NULL, INVALID_DEVID);
610	0	if (ret == 0) {
611	0	free_aes = 1;
612	0	if (enc) {
613	0	ret = wc_AesSetKey(aes, key, derivedLen, cbcIv,
614	0	AES_ENCRYPTION);
615	0	}
616	0	else {
617	0	#ifdef HAVE_AES_DECRYPT
618	0	ret = wc_AesSetKey(aes, key, derivedLen, cbcIv,
619	0	AES_DECRYPTION);
620		#else
621		ret = NOT_COMPILED_IN;
622		#endif
623	0	}
624	0	}
625	0	if (ret == 0) {
626	0	if (enc)
627	0	ret = wc_AesCbcEncrypt(aes, input, input, (word32)length);
628	0	#ifdef HAVE_AES_DECRYPT
629	0	else
630	0	ret = wc_AesCbcDecrypt(aes, input, input, (word32)length);
631	0	#endif
632	0	}
633	0	if (free_aes)
634	0	wc_AesFree(aes);
635	0	ForceZero(aes, sizeof(Aes));
636	0	WC_FREE_VAR_EX(aes, NULL, DYNAMIC_TYPE_AES);
637	0	break;
638	0	}
639	0	#endif /* !NO_AES && HAVE_AES_CBC && (WOLFSSL_AES_256 \|\| WOLFSSL_AES_128) */
640		#ifdef WC_RC2
641		case PBE_SHA1_40RC2_CBC:
642		{
643		Rc2 rc2;
644		/* effective key size for RC2-40-CBC is 40 bits */
645		ret = wc_Rc2SetKey(&rc2, key, derivedLen, cbcIv, 40);
646		if (ret == 0) {
647		if (enc)
648		ret = wc_Rc2CbcEncrypt(&rc2, input, input, length);
649		else
650		ret = wc_Rc2CbcDecrypt(&rc2, input, input, length);
651		}
652		wc_Rc2Free(&rc2);
653		break;
654		}
655		#endif
656
657	0	default:
658	0	WOLFSSL_MSG("Unknown/Unsupported encrypt/decryption algorithm");
659	0	ret = ALGO_ID_E;
660	0	WOLFSSL_ERROR_VERBOSE(ret);
661	0	}
662	0	}
663
664	0	#ifdef WOLFSSL_SMALL_STACK
665	0	if (key != NULL)
666	0	#endif
667	0	{
668	0	ForceZero(key, PKCS_MAX_KEY_SIZE);
669	0	#ifdef WOLFSSL_SMALL_STACK
670	0	XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
671		#elif defined(WOLFSSL_CHECK_MEM_ZERO)
672		wc_MemZero_Check(key, PKCS_MAX_KEY_SIZE);
673		#endif
674	0	}
675
676	0	return ret;
677	0	}
678
679		#endif /* HAVE_PKCS8 \|\| HAVE_PKCS12 */
680		#endif /* !NO_PWDBASED && !NO_ASN */