/src/wolfssl-sp-math-all-8bit/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);

    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_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 = 0;
    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->keySz > WC_MAX_SYM_KEY_SIZE) {
        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
    ret = wc_PBKDF1(key, password, passwordSz, info->iv, PKCS5_SALT_SZ, 1,
                                        (int)info->keySz, hashType);
#endif

    if (ret == 0) {
        switch (info->cipherType) {
        case WC_CIPHER_DES:
#ifndef NO_DES3
            ret = wc_Des_CbcDecryptWithKey(der, der, derSz, key, info->iv);
#else
            ret = NOT_COMPILED_IN;
#endif
            break;
        case WC_CIPHER_DES3:
#ifndef NO_DES3
            ret = wc_Des3_CbcDecryptWithKey(der, der, derSz, key, info->iv);
#else
            ret = NOT_COMPILED_IN;
#endif
            break;
        case WC_CIPHER_AES_CBC:
#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(HAVE_AES_DECRYPT)
            ret = wc_AesCbcDecryptWithKey(der, der, derSz, key, info->keySz,
                info->iv);
#else
            ret = NOT_COMPILED_IN;
#endif /* !NO_AES && HAVE_AES_CBC && HAVE_AES_DECRYPT */
            break;
        default:
            ret = ALGO_ID_E;
            break;
        }
    }

    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 = 0;
    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->keySz > WC_MAX_SYM_KEY_SIZE || 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_BufferKeyEncrypt key", key, WC_MAX_SYM_KEY_SIZE);
#endif

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

#ifndef NO_PWDBASED
    ret = wc_PBKDF1(key, password, passwordSz, info->iv, PKCS5_SALT_SZ, 1,
                                        (int)info->keySz, hashType);
#endif

    if (ret == 0) {
        switch (info->cipherType) {
        case WC_CIPHER_DES:
#ifndef NO_DES3
            ret = wc_Des_CbcEncryptWithKey(der, der, derSz, key, info->iv);
#else
            ret = NOT_COMPILED_IN;
#endif
            break;
        case WC_CIPHER_DES3:
#ifndef NO_DES3
            ret = wc_Des3_CbcEncryptWithKey(der, der, derSz, key, info->iv);
#else
            ret = NOT_COMPILED_IN;
#endif
            break;
        case WC_CIPHER_AES_CBC:
#if !defined(NO_AES) && defined(HAVE_AES_CBC)
            ret = wc_AesCbcEncryptWithKey(der, der, derSz, key, info->keySz,
                info->iv);
#else
            ret = NOT_COMPILED_IN;
#endif /* !NO_AES && HAVE_AES_CBC */
            break;
        default:
            ret = ALGO_ID_E;
            break;
        }
    }

    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) {
    #if defined(HAVE_PBKDF2) && !defined(NO_HMAC)
            case PKCS5v2:
                PRIVATE_KEY_UNLOCK();
                ret = wc_PBKDF2(key, (const byte*)password, passwordSz,
                                salt, saltSz, iterations, (int)derivedLen, typeH);
                PRIVATE_KEY_LOCK();
            #if FIPS_VERSION3_GE(7,0,0) && defined(WC_HAVE_FIPS_INDICATOR) && \
                !defined(FIPS_NO_WRAPPERS)
                /* Key is derived; a salt under 128 bits is the expected
                 * indicator (SP 800-132 sec 5.1). Any other one fails. */
                if (ret == WC_FIPS_NOT_APPROVED && saltSz < 16)
                    ret = 0;
                else if (ret == WC_FIPS_NOT_APPROVED) {
                    ret = FIPS_UNAPPROVED_E;
                    WOLFSSL_ERROR_VERBOSE(ret);
                }
            #endif
                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) {
                        ret = wc_Des_CbcEncrypt(&des, input, input,
                            (word32)length);
                    }
                    else {
                        ret = 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;

                ret = wc_Arc4SetKey(&dec, key, derivedLen);
                if (ret == 0) {
                    ret = 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: 2026-11-12 06:59

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	if (out == NULL \|\| in == NULL \|\| key == NULL \|\| iv == NULL) {
78	0	return BAD_FUNC_ARG;
79	0	}
80
81	0	WC_ALLOC_VAR_EX(aes, Aes, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
82	0	return MEMORY_E);
83
84	0	ret = wc_AesInit(aes, NULL, INVALID_DEVID);
85	0	if (ret == 0) {
86	0	ret = wc_AesSetKey(aes, key, keySz, iv, AES_ENCRYPTION);
87	0	if (ret == 0)
88	0	ret = wc_AesCbcEncrypt(aes, out, in, inSz);
89
90	0	wc_AesFree(aes);
91	0	}
92
93	0	WC_FREE_VAR_EX(aes, NULL, DYNAMIC_TYPE_TMP_BUFFER);
94
95	0	return ret;
96	0	}
97		#endif /* !NO_AES && HAVE_AES_CBC */
98
99
100		#if !defined(NO_DES3) && !defined(WOLFSSL_TI_CRYPT)
101		int wc_Des_CbcEncryptWithKey(byte* out, const byte* in, word32 sz,
102		const byte* key, const byte* iv)
103	0	{
104	0	int ret = 0;
105	0	WC_DECLARE_VAR(des, Des, 1, 0);
106
107	0	if (out == NULL \|\| in == NULL \|\| key == NULL) {
108	0	return BAD_FUNC_ARG;
109	0	}
110
111	0	WC_ALLOC_VAR_EX(des, Des, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
112	0	return MEMORY_E);
113
114	0	ret = wc_Des_SetKey(des, key, iv, DES_ENCRYPTION);
115	0	if (ret == 0)
116	0	ret = wc_Des_CbcEncrypt(des, out, in, sz);
117
118	0	WC_FREE_VAR_EX(des, NULL, DYNAMIC_TYPE_TMP_BUFFER);
119
120	0	return ret;
121	0	}
122
123		int wc_Des_CbcDecryptWithKey(byte* out, const byte* in, word32 sz,
124		const byte* key, const byte* iv)
125	0	{
126	0	int ret = 0;
127	0	WC_DECLARE_VAR(des, Des, 1, 0);
128
129	0	if (out == NULL \|\| in == NULL \|\| key == NULL) {
130	0	return BAD_FUNC_ARG;
131	0	}
132
133	0	WC_ALLOC_VAR_EX(des, Des, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
134	0	return MEMORY_E);
135
136	0	ret = wc_Des_SetKey(des, key, iv, DES_DECRYPTION);
137	0	if (ret == 0)
138	0	ret = wc_Des_CbcDecrypt(des, out, in, sz);
139
140	0	WC_FREE_VAR_EX(des, NULL, DYNAMIC_TYPE_TMP_BUFFER);
141
142	0	return ret;
143	0	}
144
145
146		int wc_Des3_CbcEncryptWithKey(byte* out, const byte* in, word32 sz,
147		const byte* key, const byte* iv)
148	0	{
149	0	int ret = 0;
150	0	WC_DECLARE_VAR(des3, Des3, 1, 0);
151
152	0	WC_ALLOC_VAR_EX(des3, Des3, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
153	0	return MEMORY_E);
154
155	0	ret = wc_Des3Init(des3, NULL, INVALID_DEVID);
156	0	if (ret == 0) {
157	0	ret = wc_Des3_SetKey(des3, key, iv, DES_ENCRYPTION);
158	0	if (ret == 0)
159	0	ret = wc_Des3_CbcEncrypt(des3, out, in, sz);
160	0	wc_Des3Free(des3);
161	0	}
162
163	0	WC_FREE_VAR_EX(des3, NULL, DYNAMIC_TYPE_TMP_BUFFER);
164
165	0	return ret;
166	0	}
167
168
169		int wc_Des3_CbcDecryptWithKey(byte* out, const byte* in, word32 sz,
170		const byte* key, const byte* iv)
171	0	{
172	0	int ret = 0;
173	0	WC_DECLARE_VAR(des3, Des3, 1, 0);
174
175	0	WC_ALLOC_VAR_EX(des3, Des3, 1, NULL, DYNAMIC_TYPE_TMP_BUFFER,
176	0	return MEMORY_E);
177
178	0	ret = wc_Des3Init(des3, NULL, INVALID_DEVID);
179	0	if (ret == 0) {
180	0	ret = wc_Des3_SetKey(des3, key, iv, DES_DECRYPTION);
181	0	if (ret == 0)
182	0	ret = wc_Des3_CbcDecrypt(des3, out, in, sz);
183	0	wc_Des3Free(des3);
184	0	}
185
186	0	WC_FREE_VAR_EX(des3, NULL, DYNAMIC_TYPE_TMP_BUFFER);
187
188	0	return ret;
189	0	}
190
191		#endif /* !NO_DES3 */
192
193
194		#if !defined(NO_ASN) && defined(WOLFSSL_ENCRYPTED_KEYS)
195
196		int wc_BufferKeyDecrypt(EncryptedInfo* info, byte* der, word32 derSz,
197		const byte* password, int passwordSz, int hashType)
198		{
199		int ret = 0;
200		WC_DECLARE_VAR(key, byte, WC_MAX_SYM_KEY_SIZE, 0);
201
202		(void)derSz;
203		(void)passwordSz;
204		(void)hashType;
205
206		if (der == NULL \|\| password == NULL \|\| info == NULL \|\| info->keySz == 0 \|\|
207		info->keySz > WC_MAX_SYM_KEY_SIZE) {
208		return BAD_FUNC_ARG;
209		}
210
211		/* use file's salt for key derivation, hex decode first */
212		if (Base16_Decode(info->iv, info->ivSz, info->iv, &info->ivSz) != 0) {
213		WOLFSSL_ERROR_VERBOSE(BUFFER_E);
214		return BUFFER_E;
215		}
216		if (info->ivSz < PKCS5_SALT_SZ) {
217		WOLFSSL_ERROR_VERBOSE(BUFFER_E);
218		return BUFFER_E;
219		}
220
221		WC_ALLOC_VAR_EX(key, byte, WC_MAX_SYM_KEY_SIZE, NULL,
222		DYNAMIC_TYPE_SYMMETRIC_KEY, return MEMORY_E);
223		#ifdef WOLFSSL_CHECK_MEM_ZERO
224		wc_MemZero_Add("wc_BufferKeyDecrypt key", key, WC_MAX_SYM_KEY_SIZE);
225		#endif
226
227		(void)XMEMSET(key, 0, WC_MAX_SYM_KEY_SIZE);
228
229		#ifndef NO_PWDBASED
230		ret = wc_PBKDF1(key, password, passwordSz, info->iv, PKCS5_SALT_SZ, 1,
231		(int)info->keySz, hashType);
232		#endif
233
234		if (ret == 0) {
235		switch (info->cipherType) {
236		case WC_CIPHER_DES:
237		#ifndef NO_DES3
238		ret = wc_Des_CbcDecryptWithKey(der, der, derSz, key, info->iv);
239		#else
240		ret = NOT_COMPILED_IN;
241		#endif
242		break;
243		case WC_CIPHER_DES3:
244		#ifndef NO_DES3
245		ret = wc_Des3_CbcDecryptWithKey(der, der, derSz, key, info->iv);
246		#else
247		ret = NOT_COMPILED_IN;
248		#endif
249		break;
250		case WC_CIPHER_AES_CBC:
251		#if !defined(NO_AES) && defined(HAVE_AES_CBC) && defined(HAVE_AES_DECRYPT)
252		ret = wc_AesCbcDecryptWithKey(der, der, derSz, key, info->keySz,
253		info->iv);
254		#else
255		ret = NOT_COMPILED_IN;
256		#endif /* !NO_AES && HAVE_AES_CBC && HAVE_AES_DECRYPT */
257		break;
258		default:
259		ret = ALGO_ID_E;
260		break;
261		}
262		}
263
264		ForceZero(key, WC_MAX_SYM_KEY_SIZE);
265		#ifdef WOLFSSL_SMALL_STACK
266		XFREE(key, NULL, DYNAMIC_TYPE_SYMMETRIC_KEY);
267		#elif defined(WOLFSSL_CHECK_MEM_ZERO)
268		wc_MemZero_Check(key, WC_MAX_SYM_KEY_SIZE);
269		#endif
270
271		return ret;
272		}
273
274		int wc_BufferKeyEncrypt(EncryptedInfo* info, byte* der, word32 derSz,
275		const byte* password, int passwordSz, int hashType)
276		{
277		int ret = 0;
278		WC_DECLARE_VAR(key, byte, WC_MAX_SYM_KEY_SIZE, 0);
279
280		(void)derSz;
281		(void)passwordSz;
282		(void)hashType;
283
284		if (der == NULL \|\| password == NULL \|\| info == NULL \|\| info->keySz == 0 \|\|
285		info->keySz > WC_MAX_SYM_KEY_SIZE \|\| info->ivSz < PKCS5_SALT_SZ) {
286		return BAD_FUNC_ARG;
287		}
288
289		WC_ALLOC_VAR_EX(key, byte, WC_MAX_SYM_KEY_SIZE, NULL,
290		DYNAMIC_TYPE_SYMMETRIC_KEY, return MEMORY_E);
291		#ifdef WOLFSSL_CHECK_MEM_ZERO
292		XMEMSET(key, 0xff, WC_MAX_SYM_KEY_SIZE);
293		wc_MemZero_Add("wc_BufferKeyEncrypt key", key, WC_MAX_SYM_KEY_SIZE);
294		#endif
295
296		(void)XMEMSET(key, 0, WC_MAX_SYM_KEY_SIZE);
297
298		#ifndef NO_PWDBASED
299		ret = wc_PBKDF1(key, password, passwordSz, info->iv, PKCS5_SALT_SZ, 1,
300		(int)info->keySz, hashType);
301		#endif
302
303		if (ret == 0) {
304		switch (info->cipherType) {
305		case WC_CIPHER_DES:
306		#ifndef NO_DES3
307		ret = wc_Des_CbcEncryptWithKey(der, der, derSz, key, info->iv);
308		#else
309		ret = NOT_COMPILED_IN;
310		#endif
311		break;
312		case WC_CIPHER_DES3:
313		#ifndef NO_DES3
314		ret = wc_Des3_CbcEncryptWithKey(der, der, derSz, key, info->iv);
315		#else
316		ret = NOT_COMPILED_IN;
317		#endif
318		break;
319		case WC_CIPHER_AES_CBC:
320		#if !defined(NO_AES) && defined(HAVE_AES_CBC)
321		ret = wc_AesCbcEncryptWithKey(der, der, derSz, key, info->keySz,
322		info->iv);
323		#else
324		ret = NOT_COMPILED_IN;
325		#endif /* !NO_AES && HAVE_AES_CBC */
326		break;
327		default:
328		ret = ALGO_ID_E;
329		break;
330		}
331		}
332
333		ForceZero(key, WC_MAX_SYM_KEY_SIZE);
334		#ifdef WOLFSSL_SMALL_STACK
335		XFREE(key, NULL, DYNAMIC_TYPE_SYMMETRIC_KEY);
336		#elif defined(WOLFSSL_CHECK_MEM_ZERO)
337		wc_MemZero_Check(key, WC_MAX_SYM_KEY_SIZE);
338		#endif
339
340		return ret;
341		}
342
343		#endif /* !NO_ASN && WOLFSSL_ENCRYPTED_KEYS */
344
345
346		#if !defined(NO_PWDBASED) && !defined(NO_ASN)
347
348		#if defined(HAVE_PKCS8) \|\| defined(HAVE_PKCS12)
349		/* Decrypt/Encrypt input in place from parameters based on id
350		*
351		* returns a negative value on fail case
352		*/
353		int wc_CryptKey(const char* password, int passwordSz, const byte* salt,
354		int saltSz, int iterations, int id, byte* input,
355		int length, int version, byte* cbcIv, int enc, int shaOid)
356	0	{
357	0	int typeH = WC_HASH_TYPE_NONE;
358	0	word32 derivedLen = 0;
359	0	int ret = 0;
360	0	WC_DECLARE_VAR(key, byte, PKCS_MAX_KEY_SIZE, 0);
361
362	0	(void)input;
363	0	(void)length;
364	0	(void)enc;
365
366	0	WOLFSSL_ENTER("wc_CryptKey");
367
368	0	if (password == NULL \|\| salt == NULL \|\| input == NULL)
369	0	return BAD_FUNC_ARG;
370
371	0	if (length < 0)
372	0	return BAD_LENGTH_E;
373
374	0	switch (id) {
375	0	#ifndef NO_DES3
376	0	#ifndef NO_MD5
377	0	case PBE_MD5_DES:
378	0	typeH = WC_MD5;
379	0	derivedLen = 16; /* may need iv for v1.5 */
380	0	break;
381	0	#endif
382	0	#ifndef NO_SHA
383	0	case PBE_SHA1_DES:
384	0	typeH = WC_SHA;
385	0	derivedLen = 16; /* may need iv for v1.5 */
386	0	break;
387	0	#endif /* !NO_SHA */
388	0	#if !defined(NO_SHA) \|\| !defined(NO_SHA256)
389	0	case PBE_SHA1_DES3:
390	0	switch (shaOid) {
391	0	#ifndef NO_SHA256
392	0	case HMAC_SHA256_OID:
393	0	typeH = WC_SHA256;
394	0	derivedLen = 32;
395	0	break;
396	0	#endif
397	0	#ifndef NO_SHA
398	0	default:
399	0	typeH = WC_SHA;
400	0	derivedLen = 32; /* may need iv for v1.5 */
401	0	break;
402	0	#endif
403	0	}
404	0	break;
405	0	#endif
406	0	#endif /* !NO_DES3 */
407	0	#if !defined(NO_SHA) && !defined(NO_RC4)
408	0	case PBE_SHA1_RC4_128:
409	0	typeH = WC_SHA;
410	0	derivedLen = 16;
411	0	break;
412	0	#endif
413	0	#if defined(WOLFSSL_AES_256)
414	0	case PBE_AES256_CBC:
415	0	switch(shaOid) {
416	0	#ifndef NO_SHA256
417	0	case HMAC_SHA256_OID:
418	0	typeH = WC_SHA256;
419	0	derivedLen = 32;
420	0	break;
421	0	#endif
422	0	#ifndef NO_SHA
423	0	default:
424	0	typeH = WC_SHA;
425	0	derivedLen = 32;
426	0	break;
427	0	#endif
428	0	}
429	0	break;
430	0	#endif /* WOLFSSL_AES_256 && !NO_SHA */
431	0	#if defined(WOLFSSL_AES_128)
432	0	case PBE_AES128_CBC:
433	0	switch(shaOid) {
434	0	#ifndef NO_SHA256
435	0	case HMAC_SHA256_OID:
436	0	typeH = WC_SHA256;
437	0	derivedLen = 16;
438	0	break;
439	0	#endif
440	0	#ifndef NO_SHA
441	0	default:
442	0	typeH = WC_SHA;
443	0	derivedLen = 16;
444	0	break;
445	0	#endif
446	0	}
447	0	break;
448	0	#endif /* WOLFSSL_AES_128 && !NO_SHA */
449		#ifdef WC_RC2
450		case PBE_SHA1_40RC2_CBC:
451		typeH = WC_SHA;
452		derivedLen = 5;
453		break;
454		#endif
455	0	default:
456	0	WOLFSSL_MSG("Unknown/Unsupported encrypt/decrypt id");
457	0	(void)shaOid;
458	0	ret = ALGO_ID_E;
459	0	WOLFSSL_ERROR_VERBOSE(ret);
460	0	}
461
462	0	#ifdef WOLFSSL_SMALL_STACK
463	0	if (ret == 0) {
464	0	key = (byte*)XMALLOC(PKCS_MAX_KEY_SIZE, NULL, DYNAMIC_TYPE_TMP_BUFFER);
465	0	if (key == NULL)
466	0	ret = MEMORY_E;
467	0	}
468	0	#endif
469
470	0	if (ret == 0) {
471		#ifdef WOLFSSL_CHECK_MEM_ZERO
472		XMEMSET(key, 0xff, PKCS_MAX_KEY_SIZE);
473		wc_MemZero_Add("wc_CryptKey key", key, PKCS_MAX_KEY_SIZE);
474		#endif
475
476	0	switch (version) {
477	0	#if defined(HAVE_PBKDF2) && !defined(NO_HMAC)
478	0	case PKCS5v2:
479	0	PRIVATE_KEY_UNLOCK();
480	0	ret = wc_PBKDF2(key, (const byte*)password, passwordSz,
481	0	salt, saltSz, iterations, (int)derivedLen, typeH);
482	0	PRIVATE_KEY_LOCK();
483		#if FIPS_VERSION3_GE(7,0,0) && defined(WC_HAVE_FIPS_INDICATOR) && \
484		!defined(FIPS_NO_WRAPPERS)
485		/* Key is derived; a salt under 128 bits is the expected
486		* indicator (SP 800-132 sec 5.1). Any other one fails. */
487		if (ret == WC_FIPS_NOT_APPROVED && saltSz < 16)
488		ret = 0;
489		else if (ret == WC_FIPS_NOT_APPROVED) {
490		ret = FIPS_UNAPPROVED_E;
491		WOLFSSL_ERROR_VERBOSE(ret);
492		}
493		#endif
494	0	break;
495	0	#endif
496	0	#ifndef NO_SHA
497	0	case PKCS5:
498	0	ret = wc_PBKDF1(key, (const byte*)password, passwordSz,
499	0	salt, saltSz, iterations, (int)derivedLen, typeH);
500	0	break;
501	0	#endif
502	0	#ifdef HAVE_PKCS12
503	0	case PKCS12v1:
504	0	{
505	0	int i, idx = 0;
506	0	byte unicodePasswd[MAX_UNICODE_SZ];
507
508	0	if (passwordSz < 0 \|\|
509	0	passwordSz >= MAX_UNICODE_SZ \|\|
510	0	(passwordSz * 2 + 2) > MAX_UNICODE_SZ) {
511	0	ret = UNICODE_SIZE_E;
512	0	break;
513	0	}
514
515	0	for (i = 0; i < passwordSz; i++) {
516	0	unicodePasswd[idx++] = 0x00;
517	0	unicodePasswd[idx++] = (byte)password[i];
518	0	}
519		/* add trailing NULL */
520	0	unicodePasswd[idx++] = 0x00;
521	0	unicodePasswd[idx++] = 0x00;
522
523	0	ret = wc_PKCS12_PBKDF(key, unicodePasswd, idx, salt, saltSz,
524	0	iterations, (int)derivedLen, typeH, 1);
525	0	if (ret < 0) {
526	0	ForceZero(unicodePasswd, MAX_UNICODE_SZ);
527	0	break;
528	0	}
529	0	if (id != PBE_SHA1_RC4_128) {
530	0	i = ret;
531	0	ret = wc_PKCS12_PBKDF(cbcIv, unicodePasswd, idx, salt,
532	0	saltSz, iterations, 8, typeH, 2);
533	0	if (ret < 0) {
534	0	ForceZero(unicodePasswd, MAX_UNICODE_SZ);
535	0	break;
536	0	}
537	0	ret += i;
538	0	}
539	0	ForceZero(unicodePasswd, MAX_UNICODE_SZ);
540	0	break;
541	0	}
542	0	#endif /* HAVE_PKCS12 */
543	0	default:
544	0	WOLFSSL_MSG("Unknown/Unsupported PKCS version");
545	0	ret = ALGO_ID_E;
546	0	WOLFSSL_ERROR_VERBOSE(ret);
547	0	} /* switch (version) */
548	0	}
549
550	0	if (ret == 0) {
551	0	switch (id) {
552	0	#ifndef NO_DES3
553	0	#if !defined(NO_SHA) \|\| !defined(NO_MD5)
554	0	case PBE_MD5_DES:
555	0	case PBE_SHA1_DES:
556	0	{
557	0	Des des;
558	0	byte* desIv = key + 8;
559
560	0	if (version == PKCS5v2 \|\| version == PKCS12v1)
561	0	desIv = cbcIv;
562
563	0	if (enc) {
564	0	ret = wc_Des_SetKey(&des, key, desIv, DES_ENCRYPTION);
565	0	}
566	0	else {
567	0	ret = wc_Des_SetKey(&des, key, desIv, DES_DECRYPTION);
568	0	}
569	0	if (ret == 0) {
570	0	if (enc) {
571	0	ret = wc_Des_CbcEncrypt(&des, input, input,
572	0	(word32)length);
573	0	}
574	0	else {
575	0	ret = wc_Des_CbcDecrypt(&des, input, input,
576	0	(word32)length);
577	0	}
578	0	}
579	0	ForceZero(&des, sizeof(Des));
580	0	break;
581	0	}
582	0	#endif /* !NO_SHA \|\| !NO_MD5 */
583
584	0	#ifndef NO_SHA
585	0	case PBE_SHA1_DES3:
586	0	{
587	0	Des3 des;
588	0	byte* desIv = key + 24;
589
590	0	if (version == PKCS5v2 \|\| version == PKCS12v1)
591	0	desIv = cbcIv;
592
593	0	ret = wc_Des3Init(&des, NULL, INVALID_DEVID);
594	0	if (ret != 0) {
595	0	break;
596	0	}
597	0	if (enc) {
598	0	ret = wc_Des3_SetKey(&des, key, desIv, DES_ENCRYPTION);
599	0	}
600	0	else {
601	0	ret = wc_Des3_SetKey(&des, key, desIv, DES_DECRYPTION);
602	0	}
603	0	if (ret == 0) {
604	0	if (enc) {
605	0	ret = wc_Des3_CbcEncrypt(&des, input, input, (word32)length);
606	0	}
607	0	else {
608	0	ret = wc_Des3_CbcDecrypt(&des, input, input, (word32)length);
609	0	}
610	0	}
611	0	wc_Des3Free(&des);
612	0	break;
613	0	}
614	0	#endif /* !NO_SHA */
615	0	#endif
616	0	#if !defined(NO_RC4) && !defined(NO_SHA)
617	0	case PBE_SHA1_RC4_128:
618	0	{
619	0	Arc4 dec;
620
621	0	ret = wc_Arc4SetKey(&dec, key, derivedLen);
622	0	if (ret == 0) {
623	0	ret = wc_Arc4Process(&dec, input, input, (word32)length);
624	0	}
625	0	ForceZero(&dec, sizeof(Arc4));
626	0	break;
627	0	}
628	0	#endif
629	0	#if !defined(NO_AES) && defined(HAVE_AES_CBC) && \
630	0	(defined(WOLFSSL_AES_256) \|\| defined(WOLFSSL_AES_128))
631	0	#ifdef WOLFSSL_AES_256
632	0	case PBE_AES256_CBC:
633	0	#endif /* WOLFSSL_AES_256 */
634	0	#ifdef WOLFSSL_AES_128
635	0	case PBE_AES128_CBC:
636	0	#endif /* WOLFSSL_AES_128 */
637	0	{
638	0	int free_aes;
639
640	0	#ifdef WOLFSSL_SMALL_STACK
641	0	Aes *aes;
642	0	aes = (Aes )XMALLOC(sizeof aes, NULL, DYNAMIC_TYPE_AES);
643	0	if (aes == NULL) {
644	0	ret = MEMORY_E;
645	0	break;
646	0	}
647		#else
648		Aes aes[1];
649		#endif
650	0	free_aes = 0;
651	0	ret = wc_AesInit(aes, NULL, INVALID_DEVID);
652	0	if (ret == 0) {
653	0	free_aes = 1;
654	0	if (enc) {
655	0	ret = wc_AesSetKey(aes, key, derivedLen, cbcIv,
656	0	AES_ENCRYPTION);
657	0	}
658	0	else {
659	0	#ifdef HAVE_AES_DECRYPT
660	0	ret = wc_AesSetKey(aes, key, derivedLen, cbcIv,
661	0	AES_DECRYPTION);
662		#else
663		ret = NOT_COMPILED_IN;
664		#endif
665	0	}
666	0	}
667	0	if (ret == 0) {
668	0	if (enc)
669	0	ret = wc_AesCbcEncrypt(aes, input, input, (word32)length);
670	0	#ifdef HAVE_AES_DECRYPT
671	0	else
672	0	ret = wc_AesCbcDecrypt(aes, input, input, (word32)length);
673	0	#endif
674	0	}
675	0	if (free_aes)
676	0	wc_AesFree(aes);
677	0	ForceZero(aes, sizeof(Aes));
678	0	WC_FREE_VAR_EX(aes, NULL, DYNAMIC_TYPE_AES);
679	0	break;
680	0	}
681	0	#endif /* !NO_AES && HAVE_AES_CBC && (WOLFSSL_AES_256 \|\| WOLFSSL_AES_128) */
682		#ifdef WC_RC2
683		case PBE_SHA1_40RC2_CBC:
684		{
685		Rc2 rc2;
686		/* effective key size for RC2-40-CBC is 40 bits */
687		ret = wc_Rc2SetKey(&rc2, key, derivedLen, cbcIv, 40);
688		if (ret == 0) {
689		if (enc)
690		ret = wc_Rc2CbcEncrypt(&rc2, input, input, length);
691		else
692		ret = wc_Rc2CbcDecrypt(&rc2, input, input, length);
693		}
694		wc_Rc2Free(&rc2);
695		break;
696		}
697		#endif
698
699	0	default:
700	0	WOLFSSL_MSG("Unknown/Unsupported encrypt/decryption algorithm");
701	0	ret = ALGO_ID_E;
702	0	WOLFSSL_ERROR_VERBOSE(ret);
703	0	}
704	0	}
705
706	0	#ifdef WOLFSSL_SMALL_STACK
707	0	if (key != NULL)
708	0	#endif
709	0	{
710	0	ForceZero(key, PKCS_MAX_KEY_SIZE);
711	0	#ifdef WOLFSSL_SMALL_STACK
712	0	XFREE(key, NULL, DYNAMIC_TYPE_TMP_BUFFER);
713		#elif defined(WOLFSSL_CHECK_MEM_ZERO)
714		wc_MemZero_Check(key, PKCS_MAX_KEY_SIZE);
715		#endif
716	0	}
717
718	0	return ret;
719	0	}
720
721		#endif /* HAVE_PKCS8 \|\| HAVE_PKCS12 */
722		#endif /* !NO_PWDBASED && !NO_ASN */