C++ EVP_DecryptFinal_ex函数代码示例

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本文整理汇总了C++中EVP_DecryptFinal_ex函数的典型用法代码示例。如果您正苦于以下问题：C++ EVP_DecryptFinal_ex函数的具体用法？C++ EVP_DecryptFinal_ex怎么用？C++ EVP_DecryptFinal_ex使用的例子？那么恭喜您, 这里精选的函数代码示例或许可以为您提供帮助。

在下文中一共展示了EVP_DecryptFinal_ex函数的20个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的C++代码示例。

示例1: PEM_do_header

int PEM_do_header(EVP_CIPHER_INFO *cipher, unsigned char *data, long *plen,
                  pem_password_cb *callback, void *u)
{
    int ok;
    int keylen;
    long len = *plen;
    int ilen = (int) len;       /* EVP_DecryptUpdate etc. take int lengths */
    EVP_CIPHER_CTX *ctx;
    unsigned char key[EVP_MAX_KEY_LENGTH];
    char buf[PEM_BUFSIZE];

#if LONG_MAX > INT_MAX
    /* Check that we did not truncate the length */
    if (len > INT_MAX) {
        PEMerr(PEM_F_PEM_DO_HEADER, PEM_R_HEADER_TOO_LONG);
        return 0;
    }
#endif

    if (cipher->cipher == NULL)
        return 1;
    if (callback == NULL)
        keylen = PEM_def_callback(buf, PEM_BUFSIZE, 0, u);
    else
        keylen = callback(buf, PEM_BUFSIZE, 0, u);
    if (keylen <= 0) {
        PEMerr(PEM_F_PEM_DO_HEADER, PEM_R_BAD_PASSWORD_READ);
        return 0;
    }
#ifdef CHARSET_EBCDIC
    /* Convert the pass phrase from EBCDIC */
    ebcdic2ascii(buf, buf, keylen);
#endif

    if (!EVP_BytesToKey(cipher->cipher, EVP_md5(), &(cipher->iv[0]),
                        (unsigned char *)buf, keylen, 1, key, NULL))
        return 0;

    ctx = EVP_CIPHER_CTX_new();
    if (ctx == NULL)
        return 0;

    ok = EVP_DecryptInit_ex(ctx, cipher->cipher, NULL, key, &(cipher->iv[0]));
    if (ok)
        ok = EVP_DecryptUpdate(ctx, data, &ilen, data, ilen);
    if (ok) {
        /* Squirrel away the length of data decrypted so far. */
        *plen = ilen;
        ok = EVP_DecryptFinal_ex(ctx, &(data[ilen]), &ilen);
    }
    if (ok)
        *plen += ilen;
    else
        PEMerr(PEM_F_PEM_DO_HEADER, PEM_R_BAD_DECRYPT);

    EVP_CIPHER_CTX_free(ctx);
    OPENSSL_cleanse((char *)buf, sizeof(buf));
    OPENSSL_cleanse((char *)key, sizeof(key));
    return ok;
}

开发者ID:Frrank1，项目名称:node，代码行数:60，代码来源:pem_lib.c

示例2: pt

// ----------------------------------------------------------------------------
bool Crypto::decryptConnectionRequest(BareNetworkString& ns)
{
    std::vector<uint8_t> pt(ns.m_buffer.size() - 4, 0);

    if (EVP_DecryptInit_ex(m_decrypt, NULL, NULL, NULL, NULL) != 1)
        return false;

    int dlen;
    if (!EVP_CIPHER_CTX_ctrl(m_decrypt, EVP_CTRL_GCM_SET_TAG, 4,
        ns.m_buffer.data()))
        return false;

    if (EVP_DecryptUpdate(m_decrypt, pt.data(), &dlen, ns.m_buffer.data() + 4,
        (int)(ns.m_buffer.size() - 4)) != 1)
        return false;

    if (EVP_DecryptFinal_ex(m_decrypt, unused_16_blocks.data(), &dlen) > 0)
    {
        assert(dlen == 0);
        std::swap(ns.m_buffer, pt);
        return true;
    }

    return false;
}   // decryptConnectionRequest

开发者ID:qwertychouskie，项目名称:stk-code，代码行数:26，代码来源:crypto_openssl.cpp

示例3: decrypt

    r_int32 AESCipher::decrypt(const unsigned char* raw, const size_t& rawLen, unsigned char* dest, size_t* destLen) 
    {
        if (*destLen < rawLen)
        {
            return CIPHER_STATUS_BUFFER_ERROR;
        }

        int ret = 0;

        int p_len = rawLen;
        int f_len = 0;
        
        if (!EVP_DecryptInit_ex(&m_dctx, NULL, NULL, NULL, NULL))
        {
            return CIPHER_STATUS_UNKNOWN_ERROR;
        }

        if (!EVP_DecryptUpdate(&m_dctx, dest, &p_len, raw, rawLen))
        {
            return CIPHER_STATUS_UNKNOWN_ERROR;
        } 

        if (!EVP_DecryptFinal_ex(&m_dctx, dest+p_len, &f_len))
        {
            return CIPHER_STATUS_UNKNOWN_ERROR;
        }

        *destLen = p_len + f_len;
        
        return CIPHER_STATUS_OK;
    }

开发者ID:levyhoo，项目名称:netwb，代码行数:31，代码来源:Cipher.cpp

示例4: OldDecrypt

bool OldDecrypt(const std::vector<unsigned char>& vchCiphertext, CKeyingMaterial& vchPlaintext, const unsigned char chKey[32], const unsigned char chIV[16])
{
    // plaintext will always be equal to or lesser than length of ciphertext
    int nLen = vchCiphertext.size();
    int nPLen = nLen, nFLen = 0;

    vchPlaintext = CKeyingMaterial(nPLen);

    EVP_CIPHER_CTX *ctx = EVP_CIPHER_CTX_new();

    if (!ctx) return false;

    bool fOk = true;

    EVP_CIPHER_CTX_init(ctx);
    if (fOk) fOk = EVP_DecryptInit_ex(ctx, EVP_aes_256_cbc(), NULL, chKey, chIV) != 0;
    if (fOk) fOk = EVP_DecryptUpdate(ctx, &vchPlaintext[0], &nPLen, &vchCiphertext[0], nLen) != 0;
    if (fOk) fOk = EVP_DecryptFinal_ex(ctx, (&vchPlaintext[0]) + nPLen, &nFLen) != 0;
    EVP_CIPHER_CTX_cleanup(ctx);

    EVP_CIPHER_CTX_free(ctx);

    if (!fOk) return false;

    vchPlaintext.resize(nPLen + nFLen);
    return true;
}

开发者ID:syscoin，项目名称:syscoin2，代码行数:27，代码来源:crypto_tests.cpp

示例5: CKeyingMaterial

bool CCrypter::Decrypt(const std::vector<unsigned char>& vchCiphertext, CKeyingMaterial& vchPlaintext)
{
    if (!fKeySet)
        return false;

    // plaintext will always be equal to or lesser than length of ciphertext
    int nLen = vchCiphertext.size();
    int nPLen = nLen, nFLen = 0;

    vchPlaintext = CKeyingMaterial(nPLen);

    EVP_CIPHER_CTX ctx;

    bool fOk = true;

    EVP_CIPHER_CTX_init(&ctx);
    if (fOk) fOk = EVP_DecryptInit_ex(&ctx, EVP_aes_256_cbc(), NULL, chKey, chIV);
    if (fOk) fOk = EVP_DecryptUpdate(&ctx, &vchPlaintext[0], &nPLen, &vchCiphertext[0], nLen);
    if (fOk) fOk = EVP_DecryptFinal_ex(&ctx, (&vchPlaintext[0])+nPLen, &nFLen);
    EVP_CIPHER_CTX_cleanup(&ctx);

    if (!fOk) return false;

    vchPlaintext.resize(nPLen + nFLen);
    return true;
}

开发者ID:pcheddar，项目名称:primecoin，代码行数:26，代码来源:crypter.cpp

示例6: DecryptAES256

bool DecryptAES256(const SecureString& sKey, const std::string& sCiphertext, const std::string& sIV, SecureString& sPlaintext)
{
    // plaintext will always be equal to or lesser than length of ciphertext
    int nLen = sCiphertext.size();
    int nPLen = nLen, nFLen = 0;

    // Verify key sizes
    if(sKey.size() != 32 || sIV.size() != AES_BLOCK_SIZE) {
        LogPrintf("crypter DecryptAES256 - Invalid key or block size\n");
        return false;
    }

    sPlaintext.resize(nPLen);

    EVP_CIPHER_CTX ctx;

    bool fOk = true;

    EVP_CIPHER_CTX_init(&ctx);
    if (fOk) fOk = EVP_DecryptInit_ex(&ctx, EVP_aes_256_cbc(), NULL, (const unsigned char*) &sKey[0], (const unsigned char*) &sIV[0]);
    if (fOk) fOk = EVP_DecryptUpdate(&ctx, (unsigned char *) &sPlaintext[0], &nPLen, (const unsigned char *) &sCiphertext[0], nLen);
    if (fOk) fOk = EVP_DecryptFinal_ex(&ctx, (unsigned char *) (&sPlaintext[0])+nPLen, &nFLen);
    EVP_CIPHER_CTX_cleanup(&ctx);

    if (!fOk) return false;

    sPlaintext.resize(nPLen + nFLen);
    return true;
}

开发者ID:TheAltcoinBoard，项目名称:XAB-withoutSecp256k1，代码行数:29，代码来源:crypter.cpp

示例7:

size_t AES::CbcDecrypt256(const char *pIn, int iInLen, char *pOut, char *pKey, char *pIv)
{
    EVP_CIPHER_CTX *ctx;

    if(!(ctx = EVP_CIPHER_CTX_new())) 
    {
        //Error for create
        return 0;
    }
    //Init Encrypt
    if(1 != EVP_DecryptInit_ex(ctx, EVP_aes_256_cbc(), NULL, pKey, pIv))
    {
        return 0;
    }
    int iLen, iPlainLen;
    if(1 != EVP_DecryptUpdate(ctx, pOut, &iLen, pIn, iInLen))
    {
        return 0;
    }
    iPlainLen = iLen;


    if(1 != EVP_DecryptFinal_ex(ctx, pOut + iPlainLen, &iLen))
    {
        return 0;
    }

    iPlainLen += iLen;

    EVP_CIPHER_CTX_free(ctx);

    return iPlainLen;

}

开发者ID:CongGroup，项目名称:BlindDB，代码行数:34，代码来源:AES.cpp

示例8: unwrap_v2_header

int unwrap_v2_header(char *passphrase, cencrypted_v2_pwheader *header, uint8_t *aes_key, uint8_t *hmacsha1_key)
{
  /* derived key is a 3DES-EDE key */
  uint8_t derived_key[192/8];
  EVP_CIPHER_CTX ctx;
  uint8_t *TEMP1;
  int outlen, tmplen;

  PKCS5_PBKDF2_HMAC_SHA1(passphrase, strlen(passphrase), (unsigned char*)header->kdf_salt, 20,
			 PBKDF2_ITERATION_COUNT, sizeof(derived_key), derived_key);

  print_hex(stderr, derived_key, 192/8);

  EVP_CIPHER_CTX_init(&ctx);
  /* result of the decryption operation shouldn't be bigger than ciphertext */
  TEMP1 = malloc(header->encrypted_keyblob_size);
  /* uses PKCS#7 padding for symmetric key operations by default */
  EVP_DecryptInit_ex(&ctx, EVP_des_ede3_cbc(), NULL, derived_key, header->blob_enc_iv);

  if(!EVP_DecryptUpdate(&ctx, TEMP1, &outlen, header->encrypted_keyblob, header->encrypted_keyblob_size)) {
    fprintf(stderr, "internal error (1) during key unwrap operation!\n");
    return(-1);
  }
  if(!EVP_DecryptFinal_ex(&ctx, TEMP1 + outlen, &tmplen)) {
    fprintf(stderr, "internal error (2) during key unwrap operation!\n");
    return(-1);
  }
  outlen += tmplen;
  EVP_CIPHER_CTX_cleanup(&ctx);
  memcpy(aes_key, TEMP1, 16);
  memcpy(hmacsha1_key, TEMP1, 20);

  return(0);
}

开发者ID:Alanaktion，项目名称:vilefault，代码行数:34，代码来源:vfdecrypt.c

示例9: DecryptString

int DecryptString(char type, char *in, char *out, unsigned char *key, int cipherlen)
{
    int plainlen = 0, tmplen;
    unsigned char iv[32] =
        { 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8 };
    EVP_CIPHER_CTX ctx;

    EVP_CIPHER_CTX_init(&ctx);
    EVP_DecryptInit_ex(&ctx, CfengineCipher(type), NULL, key, iv);

    if (!EVP_DecryptUpdate(&ctx, out, &plainlen, in, cipherlen))
    {
        CfOut(cf_error, "", "!! Decrypt FAILED");
        EVP_CIPHER_CTX_cleanup(&ctx);
        return -1;
    }

    if (!EVP_DecryptFinal_ex(&ctx, out + plainlen, &tmplen))
    {
        unsigned long err = ERR_get_error();

        CfOut(cf_error, "", "decryption FAILED at final of %d: %s\n", cipherlen, ERR_error_string(err, NULL));
        EVP_CIPHER_CTX_cleanup(&ctx);
        return -1;
    }

    plainlen += tmplen;

    EVP_CIPHER_CTX_cleanup(&ctx);

    return plainlen;
}

开发者ID:fbettag，项目名称:core，代码行数:32，代码来源:crypto.c

示例10: CKeyingMaterial

bool CCrypter::Decrypt(const std::vector<unsigned char>& vchCiphertext, CKeyingMaterial& vchPlaintext)
{
    if (!fKeySet)
        return false;

    // plaintext will always be equal to or lesser than length of ciphertext
    int nLen = vchCiphertext.size();
    int nPLen = nLen, nFLen = 0;

    vchPlaintext = CKeyingMaterial(nPLen);

    bool fOk = true;

    EVP_CIPHER_CTX *ctx= EVP_CIPHER_CTX_new();
    if(!ctx)
        throw std::runtime_error("Error allocating cipher context");

    if (fOk) fOk = EVP_DecryptInit_ex(ctx, EVP_aes_256_cbc(), NULL, chKey, chIV);
    if (fOk) fOk = EVP_DecryptUpdate(ctx, &vchPlaintext[0], &nPLen, &vchCiphertext[0], nLen);
    if (fOk) fOk = EVP_DecryptFinal_ex(ctx, (&vchPlaintext[0])+nPLen, &nFLen);
    EVP_CIPHER_CTX_free(ctx);

    if (!fOk) return false;

    vchPlaintext.resize(nPLen + nFLen);
    return true;
}

开发者ID:gridcoin，项目名称:Gridcoin-Research，代码行数:27，代码来源:crypter.cpp

示例11: QByteArray

/**
 * Decrypt cipher data
 **/
QByteArray OpensslAES::decrypt(const QByteArray &cipherData)
{
    if (!m_isValid)
        return QByteArray();

    /* plaintext will always be equal to or lesser than length of ciphertext*/
    int p_len = cipherData.size(), f_len = 0;
    unsigned char *plaintext = (unsigned char *)malloc(p_len);

    if (!EVP_DecryptInit_ex(&m_decoder, 0, 0, 0, 0)) {
        printf("ERROR in EVP_DecryptInit_ex\n");
        return QByteArray();
    }

    if (!EVP_DecryptUpdate(&m_decoder, plaintext, &p_len,
                           (const unsigned char*)cipherData.constData(), cipherData.size())) {
        printf("ERROR in EVP_DecryptUpdate\n");
        return QByteArray();
    }

    if (!EVP_DecryptFinal_ex(&m_decoder, plaintext+p_len, &f_len)) {
        printf("ERROR in EVP_DecryptFinal_ex\n");
        return QByteArray();
    }

    return QByteArray((const char*)plaintext, p_len + f_len);
}

开发者ID:dushibaiyu，项目名称:QSocket5Tunnel，代码行数:30，代码来源:opensslaes.cpp

示例12: ERR_load_crypto_strings

bool msl::decrypt_aes256(const void* cipher,const size_t size,const std::string& key,const std::string& iv,std::string& plain)
{
	bool success=false;
	ERR_load_crypto_strings();
	OpenSSL_add_all_algorithms();
	EVP_CIPHER_CTX* ctx=EVP_CIPHER_CTX_new();
	uint8_t* temp_data=new uint8_t[(size/16+1)*16];

	int temp_length;
	int temp_unaligned_length;

	if(ctx!=nullptr&&
		EVP_DecryptInit_ex(ctx,EVP_aes_256_cbc(),nullptr,(uint8_t*)key.c_str(),(uint8_t*)iv.c_str())!=0&&
		EVP_DecryptUpdate(ctx,temp_data,&temp_length,(uint8_t*)cipher,size)!=0&&
		EVP_DecryptFinal_ex(ctx,temp_data+temp_length,&temp_unaligned_length)!=0)
	{
		plain=std::string((char*)temp_data,temp_length+temp_unaligned_length);
		success=true;
	}

	delete[] temp_data;
	EVP_CIPHER_CTX_free(ctx);
	ERR_free_strings();
	EVP_cleanup();
	ERR_remove_state(0);
	CRYPTO_cleanup_all_ex_data();
	return success;
}

开发者ID:mrmoss，项目名称:blasteroids，代码行数:28，代码来源:crypto.cpp

示例13: Java_com_facebook_crypto_cipher_NativeGCMCipher_nativeDecryptFinal

JNIEXPORT int JNICALL Java_com_facebook_crypto_cipher_NativeGCMCipher_nativeDecryptFinal(
  JNIEnv* env,
  jobject obj,
  jbyteArray macTag,
  jint tagLength) {

  int bytesWritten = 0;
  char temp[1];

  EVP_CIPHER_CTX* ctx = Get_Cipher_CTX(env, obj);
  if (!ctx) {
    return CRYPTO_FAILURE;
  }

  jbyte* tagBytes = (*env)->GetByteArrayElements(env, macTag, NULL);
  if (!tagBytes) {
    return CRYPTO_FAILURE;
  }

  int retCode = CRYPTO_SUCCESS;
  if (!EVP_CIPHER_CTX_ctrl(ctx, EVP_CTRL_GCM_SET_TAG, tagLength, tagBytes)) {
    retCode = CRYPTO_FAILURE;
  }

  if (!retCode || !EVP_DecryptFinal_ex(ctx, temp, &bytesWritten)) {
    retCode = CRYPTO_FAILURE;
  }

  (*env)->ReleaseByteArrayElements(env, macTag, tagBytes, JNI_ABORT);

  return retCode;
}

开发者ID:Baldwin-Yu，项目名称:conceal，代码行数:32，代码来源:gcm.c

示例14: lib_decryptArray

static bool lib_decryptArray(const EVP_CIPHER *type, const QByteArray &buf, const QByteArray &key, const QByteArray &iv, bool pad, QByteArray *out)
{
	QByteArray result(buf.size()+type->block_size);
	int len;
	EVP_CIPHER_CTX c;

	unsigned char *ivp = NULL;
	if(!iv.isEmpty())
		ivp = (unsigned char *)iv.data();
	EVP_CIPHER_CTX_init(&c);
	//EVP_CIPHER_CTX_set_padding(&c, pad ? 1: 0);
	if(!EVP_DecryptInit_ex(&c, type, NULL, (unsigned char *)key.data(), ivp))
		return false;
	if(!pad) {
		if(!EVP_EncryptUpdate(&c, (unsigned char *)result.data(), &len, (unsigned char *)buf.data(), buf.size()))
			return false;
	}
	else {
		if(!EVP_DecryptUpdate(&c, (unsigned char *)result.data(), &len, (unsigned char *)buf.data(), buf.size()))
			return false;
	}
	result.resize(len);
	if(pad) {
		QByteArray last(type->block_size);
		if(!EVP_DecryptFinal_ex(&c, (unsigned char *)last.data(), &len))
			return false;
		last.resize(len);
		ByteStream::appendArray(&result, last);
	}

	memset(&c, 0, sizeof(EVP_CIPHER_CTX));
	*out = result;
	return true;
}

开发者ID:psi-im，项目名称:cutestuff，代码行数:34，代码来源:cipher.cpp

示例15: SAF_SymmDecryptFinal

/* 7.3.43 */
int SAF_SymmDecryptFinal(
	void *hKeyHandle,
	unsigned char *pucOutData,
	unsigned int *puiOutDataLen)
{
	int ret = SAR_UnknownErr;
	SAF_KEY *hkey = (SAF_KEY *)hKeyHandle;
	int outlen;

	if (!hKeyHandle || !pucOutData || !puiOutDataLen) {
		SAFerr(SAF_F_SAF_SYMMDECRYPTFINAL, ERR_R_PASSED_NULL_PARAMETER);
		return SAR_IndataErr;
	}

	if (!hkey->cipher_ctx) {
		SAFerr(SAF_F_SAF_SYMMDECRYPTFINAL, SAF_R_DECRYPT_NOT_INITIALIZED);
		return SAR_NotInitializeErr;
	}

	if (!EVP_DecryptFinal_ex(hkey->cipher_ctx, pucOutData, &outlen)) {
		SAFerr(SAF_F_SAF_SYMMDECRYPTFINAL, ERR_R_EVP_LIB);
		goto end;
	}
	*puiOutDataLen = (unsigned int)outlen;

	ret = SAR_OK;

end:
	EVP_CIPHER_CTX_free(hkey->cipher_ctx);
	hkey->cipher_ctx = NULL;
	return ret;
}

开发者ID:zsdev2015，项目名称:GmSSL，代码行数:33，代码来源:saf_enc.c

示例16: decrypt

uint32_t decrypt(const BYTE *password, const BYTE* data, uint32_t len, BYTE* ans, encrypt_function function) {
	EVP_CIPHER_CTX ctx;
	uint32_t keyl = 0, ivl = 0;
	uint32_t outl = 0, templ = 0;
	char *out = calloc(len, sizeof(char));
	keyl = EVP_CIPHER_key_length(function());
	ivl = EVP_CIPHER_iv_length(function());
    BYTE key[keyl];
    BYTE iv[ivl];

	/* Getting keys and iv */ 
	// Salt is setting in NULL
    EVP_BytesToKey(function(), EVP_md5(), NULL, password, strlen(password), 1, key, iv);

	/* Initialize context */
	EVP_CIPHER_CTX_init(&ctx);
	EVP_DecryptInit_ex(&ctx, function(), NULL, key, iv); 
	EVP_DecryptUpdate(&ctx, out, &outl, data, len); 
	EVP_DecryptFinal_ex(&ctx, out + outl, &templ);
	outl +=templ;
	memcpy(ans, out, outl);
	
	/* Clean context struct */ 
	EVP_CIPHER_CTX_cleanup(&ctx);
	free(out);
	return outl;
}

开发者ID:eugis，项目名称:crypto-tpe，代码行数:27，代码来源:encryptLib.c

示例17: DecryptString

int DecryptString(char type, const char *in, char *out, unsigned char *key, int cipherlen)
{
    int plainlen = 0, tmplen;
    unsigned char iv[32] =
        { 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8, 1, 2, 3, 4, 5, 6, 7, 8 };
    EVP_CIPHER_CTX ctx;

    if (key == NULL)
        ProgrammingError("DecryptString: session key == NULL");

    EVP_CIPHER_CTX_init(&ctx);
    EVP_DecryptInit_ex(&ctx, CfengineCipher(type), NULL, key, iv);

    if (!EVP_DecryptUpdate(&ctx, out, &plainlen, in, cipherlen))
    {
        Log(LOG_LEVEL_ERR, "Failed to decrypt string");
        EVP_CIPHER_CTX_cleanup(&ctx);
        return -1;
    }

    if (!EVP_DecryptFinal_ex(&ctx, out + plainlen, &tmplen))
    {
        unsigned long err = ERR_get_error();

        Log(LOG_LEVEL_ERR, "Failed to decrypt at final of cipher length %d. (EVP_DecryptFinal_ex: %s)", cipherlen, ERR_error_string(err, NULL));
        EVP_CIPHER_CTX_cleanup(&ctx);
        return -1;
    }

    plainlen += tmplen;

    EVP_CIPHER_CTX_cleanup(&ctx);

    return plainlen;
}

开发者ID:markburgess，项目名称:Cellibrium，代码行数:35，代码来源:crypto.c

示例18: aesDecrypt

static int aesDecrypt(char* input, int inlen, char* output, int* outlen) {
    int c_len;
    int f_len;
    EVP_CIPHER_CTX ctx;

    if (input == NULL || inlen <= 0 || output == NULL || *outlen <= 0) {
        return -1;
    }

    EVP_CIPHER_CTX_init(&ctx);

    if (EVP_DecryptInit_ex(&ctx, EVP_aes_128_ecb(), NULL, key, NULL) != 1) {
        return -2;
    }

    if (EVP_DecryptUpdate(&ctx, (unsigned char*)output, &c_len, (const unsigned char*)input,
                          inlen) != 1) {
        return -3;
    }

    if (EVP_DecryptFinal_ex(&ctx, (unsigned char*)(output + c_len), &f_len) != 1) {
        return -4;
    }

    EVP_CIPHER_CTX_cleanup(&ctx);

    *outlen = c_len + f_len;
    return 0;
}

开发者ID:cumirror，项目名称:epoll_example，代码行数:29，代码来源:coding.c

示例19: dyn_aes_decrypt

rstatus_t dyn_aes_decrypt(unsigned char *enc_msg, size_t enc_msg_len, struct mbuf *mbuf, unsigned char *aes_key) {
	if (ENCRYPTION) {
		size_t dec_len   = 0;
		size_t block_len = 0;

		ASSERT(mbuf != NULL && mbuf->last == mbuf->pos);

		//if(!EVP_DecryptInit_ex(aes_decrypt_ctx, aes_cipher, NULL, aes_key, aes_iv)) {
		if(!EVP_DecryptInit_ex(aes_decrypt_ctx, aes_cipher, NULL, aes_key, aes_key)) {
			return DN_ERROR;
		}

		if(!EVP_DecryptUpdate(aes_decrypt_ctx, mbuf->pos, (int*) &block_len, enc_msg, (int)enc_msg_len)) {
			return DN_ERROR;
		}
		dec_len += block_len;

		if(!EVP_DecryptFinal_ex(aes_decrypt_ctx, mbuf->pos + dec_len, (int*) &block_len)) {
			return DN_ERROR;
		}
		dec_len += block_len;
		mbuf->last = mbuf->pos + dec_len;

		EVP_CIPHER_CTX_cleanup(aes_decrypt_ctx);

		return (int) dec_len;
	}

	mbuf_copy(mbuf, enc_msg, enc_msg_len);
	return (int) enc_msg_len;

}

开发者ID:mbrukman，项目名称:netflix-dynomite，代码行数:32，代码来源:dyn_crypto.c

示例20: aes_decrypt

/**
* @brief Decrypt *len bytes of ciphertext.
*
* Code adapted from: http://saju.net.in/code/misc/openssl_aes.c.txt
*
* @param e
* @param plaintext_buf
* @param plaintext_buf_len
* @param ciphertext
* @param ciphertext_len
*
* @return Size of decrypted data on success; -1 on failure
*/
int aes_decrypt(EVP_CIPHER_CTX *e, 
				unsigned char *plaintext_buf, int plaintext_buf_len,
				unsigned char *ciphertext, int ciphertext_len) {
	/* because we have padding ON, we must have an extra cipher block size of memory */
	int p_len = ciphertext_len, f_len = 0;
	if (plaintext_buf_len < p_len + AES_BLOCK_SIZE) {
		ERROR("ERROR: plaintext buffer too small");
		return -1;
	}
	
	if (EVP_DecryptInit_ex(e, NULL, NULL, NULL, NULL) != 1) {
		ERROR("ERROR initializing decryption");
		return -1;
	}
	if (EVP_DecryptUpdate(e, plaintext_buf, &p_len, ciphertext, ciphertext_len) != 1) {
		ERROR("ERROR decrypting");
		return-1;
	}
	if (EVP_DecryptFinal_ex(e, plaintext_buf+p_len, &f_len) != 1) {
		ERROR("ERROR decrypting");
		return -1;
	}
	
	return p_len + f_len;;
}

开发者ID:BigQNo2，项目名称:xia-core，代码行数:38，代码来源:XSSL_util.c

注：本文中的EVP_DecryptFinal_ex函数示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。