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---
title: "Request security | Binance Open Platform"
source: "https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security"
fetched_at: "2026-02-26T10:38:11.884Z"
---
- Each method has a security type indicating required API key permissions, shown next to the method name (e.g., [Place new order (TRADE)](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security)).
- If unspecified, the security type is `NONE`.
- Except for `NONE`, all methods with a security type are considered `SIGNED` requests (i.e. including a `signature`), except for [listenKey management](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security).
- Secure methods require a valid API key to be specified and authenticated.
- API keys can be created on the [SPOT Test Network](https://testnet.binance.vision/) upon logging in with your Github account.
- **Both API key and secret key are sensitive.** Never share them with anyone. If you notice unusual activity in your account, immediately revoke all the keys and contact Binance support.
- API keys can be configured to allow access only to certain types of secure methods.
- For example, you can have an API key with `TRADE` permission for trading, while using a separate API key with `USER_DATA` permission to monitor your order status.
- By default, an API key cannot `TRADE`. You need to enable trading in API Management first.
Security type
Description
`NONE`
Public market data
`TRADE`
Trading on the exchange, placing and canceling orders
`USER_DATA`
Private account information, such as order status and your trading history
`USER_STREAM`
Managing User Data Stream subscriptions
### SIGNED request security[​](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security)
- `SIGNED` requests require an additional parameter: `signature`, authorizing the request.
#### Signature Case Sensitivity[​](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security)
- **HMAC:** Signatures generated using HMAC are **not case-sensitive**. This means the signature string can be verified regardless of letter casing.
- **RSA:** Signatures generated using RSA are **case-sensitive**.
- **Ed25519:** Signatures generated using ED25519 are also **case-sensitive**
Please consult [SIGNED request example (HMAC)](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security), [SIGNED request example (RSA)](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security), and [SIGNED request example (Ed25519)](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security) on how to compute signature, depending on which API key type you are using.
### Timing security[​](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security)
- `SIGNED` requests also require a `timestamp` parameter which should be the current timestamp either in milliseconds or microseconds. (See [General API Information](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security))
- An additional optional parameter, `recvWindow`, specifies for how long the request stays valid and may only be specified in milliseconds.
- `recvWindow` supports up to three decimal places of precision (e.g., 6000.346) so that microseconds may be specified.
- If `recvWindow` is not sent, **it defaults to 5000 milliseconds**.
- Maximum `recvWindow` is 60000 milliseconds.
- Request processing logic is as follows:
```
serverTime = getCurrentTime()if (timestamp < (serverTime + 1 second) && (serverTime - timestamp) <= recvWindow) { // begin processing request serverTime = getCurrentTime() if (serverTime - timestamp) <= recvWindow { // forward request to Matching Engine } else { // reject request } // finish processing request} else { // reject request}
```
**Serious trading is about timing.** Networks can be unstable and unreliable, which can lead to requests taking varying amounts of time to reach the servers. With `recvWindow`, you can specify that the request must be processed within a certain number of milliseconds or be rejected by the server.
**It is recommended to use a small `recvWindow` of 5000 or less!**
### SIGNED request example (HMAC)[​](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security)
Here is a step-by-step guide on how to sign requests using an HMAC secret key.
Example API key and secret key:
Key
Value
`apiKey`
`vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A`
`secretKey`
`NhqPtmdSJYdKjVHjA7PZj4Mge3R5YNiP1e3UZjInClVN65XAbvqqM6A7H5fATj0j`
**WARNING: DO NOT SHARE YOUR API KEY AND SECRET KEY WITH ANYONE.**
The example keys are provided here only for illustrative purposes.
Example of request with a symbol name comprised entirely of ASCII characters:
```
{ "id": "4885f793-e5ad-4c3b-8f6c-55d891472b71", "method": "order.place", "params": { "symbol": "BTCUSDT", "side": "SELL", "type": "LIMIT", "timeInForce": "GTC", "quantity": "0.01000000", "price": "52000.00", "recvWindow": 100, "timestamp": 1645423376532, "apiKey": "vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A", "signature": "------ FILL ME ------" }}
```
Example of a request with a symbol name containing non-ASCII characters:
```
{ "id": "4885f793-e5ad-4c3b-8f6c-55d891472b71", "method": "order.place", "params": { "symbol": "１２３４５６", "side": "BUY", "type": "LIMIT", "timeInForce": "GTC", "quantity": "0.01000000", "price": "0.10000000", "recvWindow": 5000, "timestamp": 1645423376532, "apiKey": "vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A", "signature": "------ FILL ME ------" }}
```
As you can see, the `signature` parameter is currently missing.
**Step 1: Construct the signature payload**
Take all request `params` except `signature` and **sort them in alphabetical order by parameter name**:
For the first set of example parameters (ASCII only):
Parameter
Value
`apiKey`
vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A
`price`
52000.00
`quantity`
0.01000000
`recvWindow`
100
`side`
SELL
`symbol`
BTCUSDT
`timeInForce`
GTC
`timestamp`
1645423376532
`type`
LIMIT
For the second set of example parameters (some non-ASCII characters):
Parameter
Value
`apiKey`
vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A
`price`
0.10000000
`quantity`
1.00000000
`recvWindow`
5000
`side`
BUY
`symbol`
１２３４５６
`timeInForce`
GTC
`timestamp`
1645423376532
`type`
LIMIT
Format parameters as `parameter=value` pairs separated by `&`. Values need to be encoded in UTF-8.
For the first set of example parameters (ASCII only), the signature payload should look like this:
```
apiKey=vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A&price=52000.00&quantity=0.01000000&recvWindow=100&side=SELL&symbol=BTCUSDT&timeInForce=GTC&timestamp=1645423376532&type=LIMIT
```
For the second set of example parameters (some non-ASCII characters), the signature payload should look like this:
```
apiKey=vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A&price=0.10000000&quantity=1.00000000&recvWindow=5000&side=BUY&symbol=１２３４５６&timeInForce=GTC&timestamp=1645423376532&type=LIMIT
```
**Step 2: Compute the signature**
1. Use the `secretKey` of your API key as the signing key for the HMAC-SHA-256 algorithm.
2. Sign the UTF-8 bytes of the signature payload constructed in Step 1.
3. Encode the HMAC-SHA-256 output as a hex string.
Note that `apiKey`, `secretKey`, and the payload are **case-sensitive**, while the resulting signature value is case-insensitive.
You can cross-check your signature algorithm implementation with OpenSSL:
For the first set of example parameters (ASCII only):
```
$ echo -n 'apiKey=vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A&price=52000.00&quantity=0.01000000&recvWindow=100&side=SELL&symbol=BTCUSDT&timeInForce=GTC&timestamp=1645423376532&type=LIMIT' \ | openssl dgst -hex -sha256 -hmac 'NhqPtmdSJYdKjVHjA7PZj4Mge3R5YNiP1e3UZjInClVN65XAbvqqM6A7H5fATj0j'aa1b5712c094bc4e57c05a1a5c1fd8d88dcd628338ea863fec7b88e59fe2db24
```
For the second set of example parameters (some non-ASCII characters):
```
$ echo -n 'apiKey=vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A&price=0.10000000&quantity=1.00000000&recvWindow=5000&side=BUY&symbol=１２３４５６&timeInForce=GTC&timestamp=1645423376532&type=LIMIT' \ | openssl dgst -hex -sha256 -hmac 'NhqPtmdSJYdKjVHjA7PZj4Mge3R5YNiP1e3UZjInClVN65XAbvqqM6A7H5fATj0j'b33892ae8e687c939f4468c6268ddd4c40ac1af18ad19a064864c47bae0752cd
```
**Step 3: Add `signature` to request `params`**
Complete the request by adding the `signature` parameter with the signature string.
For the first set of example parameters (ASCII only):
```
{ "id": "4885f793-e5ad-4c3b-8f6c-55d891472b71", "method": "order.place", "params": { "symbol": "BTCUSDT", "side": "SELL", "type": "LIMIT", "timeInForce": "GTC", "quantity": "0.01000000", "price": "52000.00", "recvWindow": 100, "timestamp": 1645423376532, "apiKey": "vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A", "signature": "aa1b5712c094bc4e57c05a1a5c1fd8d88dcd628338ea863fec7b88e59fe2db24" }}
```
For the second set of example parameters (some non-ASCII characters):
```
{ "id": "4885f793-e5ad-4c3b-8f6c-55d891472b71", "method": "order.place", "params": { "symbol": "１２３４５６", "side": "BUY", "type": "LIMIT", "timeInForce": "GTC", "quantity": "1.00000000", "price": "0.10000000", "recvWindow": 5000, "timestamp": 1645423376532, "apiKey": "vmPUZE6mv9SD5VNHk4HlWFsOr6aKE2zvsw0MuIgwCIPy6utIco14y7Ju91duEh8A", "signature": "b33892ae8e687c939f4468c6268ddd4c40ac1af18ad19a064864c47bae0752cd" }}
```
### SIGNED request example (RSA)[​](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security)
Here is a step-by-step guide on how to sign requests using an RSA private key.
Key
Value
`apiKey`
`CAvIjXy3F44yW6Pou5k8Dy1swsYDWJZLeoK2r8G4cFDnE9nosRppc2eKc1T8TRTQ`
These examples assume the private key is stored in the file `test-rsa-prv.pem`.
**WARNING: DO NOT SHARE YOUR API KEY AND PRIVATE KEY WITH ANYONE.**
The example keys are provided here only for illustrative purposes.
Example of request with a symbol name comprised entirely of ASCII characters:
```
{ "id": "4885f793-e5ad-4c3b-8f6c-55d891472b71", "method": "order.place", "params": { "symbol": "BTCUSDT", "side": "SELL", "type": "LIMIT", "timeInForce": "GTC", "quantity": "0.01000000", "price": "52000.00", "recvWindow": 100, "timestamp": 1645423376532, "apiKey": "CAvIjXy3F44yW6Pou5k8Dy1swsYDWJZLeoK2r8G4cFDnE9nosRppc2eKc1T8TRTQ", "signature": "------ FILL ME ------" }}
```
Example of a request with a symbol name containing non-ASCII characters:
```
{ "id": "4885f793-e5ad-4c3b-8f6c-55d891472b71", "method": "order.place", "params": { "symbol": "１２３４５６", "side": "BUY", "type": "LIMIT", "timeInForce": "GTC", "quantity": "0.01000000", "price": "0.10000000", "recvWindow": 5000, "timestamp": 1645423376532, "apiKey": "CAvIjXy3F44yW6Pou5k8Dy1swsYDWJZLeoK2r8G4cFDnE9nosRppc2eKc1T8TRTQ", "signature": "------ FILL ME ------" }}
```
**Step 1: Construct the signature payload**
Take all request `params` except `signature` and **sort them in alphabetical order by parameter name**:
For the first set of example parameters (ASCII only):
Parameter
Value
`apiKey`
CAvIjXy3F44yW6Pou5k8Dy1swsYDWJZLeoK2r8G4cFDnE9nosRppc2eKc1T8TRTQ
`price`
52000.00
`quantity`
0.01000000
`recvWindow`
100
`side`
SELL
`symbol`
BTCUSDT
`timeInForce`
GTC
`timestamp`
1645423376532
`type`
LIMIT
For the second set of example parameters (some non-ASCII characters):
Parameter
Value
`apiKey`
CAvIjXy3F44yW6Pou5k8Dy1swsYDWJZLeoK2r8G4cFDnE9nosRppc2eKc1T8TRTQ
`price`
0.10000000
`quantity`
1.00000000
`recvWindow`
5000
`side`
BUY
`symbol`
１２３４５６
`timeInForce`
GTC
`timestamp`
1645423376532
`type`
LIMIT
Format parameters as `parameter=value` pairs separated by `&`. Values need to be encoded in UTF-8.
For the first set of example parameters (ASCII only), the signature payload should look like this:
```
apiKey=CAvIjXy3F44yW6Pou5k8Dy1swsYDWJZLeoK2r8G4cFDnE9nosRppc2eKc1T8TRTQ&price=52000.00&quantity=0.01000000&recvWindow=100&side=SELL&symbol=BTCUSDT&timeInForce=GTC&timestamp=1645423376532&type=LIMIT
```
For the second set of example parameters (some non-ASCII characters), the signature payload should look like this:
```
apiKey=CAvIjXy3F44yW6Pou5k8Dy1swsYDWJZLeoK2r8G4cFDnE9nosRppc2eKc1T8TRTQ&price=0.10000000&quantity=1.00000000&recvWindow=5000&side=BUY&symbol=１２３４５６&timeInForce=GTC&timestamp=1645423376532&type=LIMIT
```
**Step 2: Compute the signature**
1. Sign the UTF-8 bytes of the signature payload constructed in Step 1 using the RSASSA-PKCS1-v1\_5 algorithm with SHA-256 hash function.
2. Encode the output in base64.
Note that `apiKey`, the payload, and the resulting `signature` are **case-sensitive**.
You can cross-check your signature algorithm implementation with OpenSSL:
For the first set of example parameters (ASCII only):
```
$ echo -n 'apiKey=CAvIjXy3F44yW6Pou5k8Dy1swsYDWJZLeoK2r8G4cFDnE9nosRppc2eKc1T8TRTQ&price=52000.00&quantity=0.01000000&recvWindow=100&side=SELL&symbol=BTCUSDT&timeInForce=GTC&timestamp=1645423376532&type=LIMIT' \ | openssl dgst -sha256 -sign test-rsa-prv.pem \ | openssl enc -base64 -AOJJaf8C/3VGrU4ATTR4GiUDqL2FboSE1Qw7UnnoYNfXTXHubIl1iaePGuGyfct4NPu5oVEZCH4Q6ZStfB1w4ssgu0uiB/Bg+fBrRFfVgVaLKBdYHMvT+ljUJzqVaeoThG9oXlduiw8PbS9U8DYAbDvWN3jqZLo4Z2YJbyovyDAvDTr/oC0+vssLqP7NmlNb3fF3Bj7StmOwJvQJTbRAtzxK5PP7OQe+0mbW+D7RqVkUiSswR8qJFWTeSe4nXXNIdZdueYhF/Xf25L+KitJS5IHdIHcKfEw3MQzHFb2ZsGWkjDQwxkwr7Noi0Zaa+gFtxCuatGFm9dFIyx217pmSHtA==
```
For the second set of example parameters (some non-ASCII characters):
```
$ echo -n 'apiKey=CAvIjXy3F44yW6Pou5k8Dy1swsYDWJZLeoK2r8G4cFDnE9nosRppc2eKc1T8TRTQ&price=0.10000000&quantity=1.00000000&recvWindow=5000&side=BUY&symbol=１２３４５６&timeInForce=GTC&timestamp=1645423376532&type=LIMIT' \ | openssl dgst -sha256 -sign test-rsa-prv.pem \ | openssl enc -base64 -AF3o/79Ttvl2cVYGPfBOF3oEOcm5QcYmTYWpdVIrKve5u+8paMNDAdUE+teqMxFM9HcquetGcfuFpLYtsQames5bDx/tskGM76TWW8HaM+6tuSYBSFLrKqChfA9hQGLYGjAiflf1YBnDhY+7vNbJFusUborNOloOj+ufzP5q42PvI3H0uNy3W5V3pyfXpDGCBtfCYYr9NAqA4d+AQfyllL/zkO9h9JSdozN49t0/hWGoD2dWgSO0Je6MytKEvD4DQXGeqNlBTB6tUXcWnRW+FcaKZ4KYqnxCtb1u8rFXUYgFykr2CbcJLSmw6ydEJ3EZ/NaZopRr+cU0W2m0HZ3qucw==
```
**Step 3: Add `signature` to request `params`**
Complete the request by adding the `signature` parameter with the signature string.
For the first set of example parameters (ASCII only):
```
{ "id": "4885f793-e5ad-4c3b-8f6c-55d891472b71", "method": "order.place", "params": { "symbol": "BTCUSDT", "side": "SELL", "type": "LIMIT", "timeInForce": "GTC", "quantity": "0.01000000", "price": "52000.00", "newOrderRespType": "ACK", "recvWindow": 100, "timestamp": 1645423376532, "apiKey": "CAvIjXy3F44yW6Pou5k8Dy1swsYDWJZLeoK2r8G4cFDnE9nosRppc2eKc1T8TRTQ", "signature": "OJJaf8C/3VGrU4ATTR4GiUDqL2FboSE1Qw7UnnoYNfXTXHubIl1iaePGuGyfct4NPu5oVEZCH4Q6ZStfB1w4ssgu0uiB/Bg+fBrRFfVgVaLKBdYHMvT+ljUJzqVaeoThG9oXlduiw8PbS9U8DYAbDvWN3jqZLo4Z2YJbyovyDAvDTr/oC0+vssLqP7NmlNb3fF3Bj7StmOwJvQJTbRAtzxK5PP7OQe+0mbW+D7RqVkUiSswR8qJFWTeSe4nXXNIdZdueYhF/Xf25L+KitJS5IHdIHcKfEw3MQzHFb2ZsGWkjDQwxkwr7Noi0Zaa+gFtxCuatGFm9dFIyx217pmSHtA==" }}
```
For the second set of example parameters (some non-ASCII characters):
```
{ "id": "4885f793-e5ad-4c3b-8f6c-55d891472b71", "method": "order.place", "params": { "symbol": "１２３４５６", "side": "SELL", "type": "LIMIT", "timeInForce": "GTC", "quantity": "1.00000000", "price": "0.10000000", "recvWindow": 5000, "timestamp": 1645423376532, "apiKey": "CAvIjXy3F44yW6Pou5k8Dy1swsYDWJZLeoK2r8G4cFDnE9nosRppc2eKc1T8TRTQ", "signature": "F3o/79Ttvl2cVYGPfBOF3oEOcm5QcYmTYWpdVIrKve5u+8paMNDAdUE+teqMxFM9HcquetGcfuFpLYtsQames5bDx/tskGM76TWW8HaM+6tuSYBSFLrKqChfA9hQGLYGjAiflf1YBnDhY+7vNbJFusUborNOloOj+ufzP5q42PvI3H0uNy3W5V3pyfXpDGCBtfCYYr9NAqA4d+AQfyllL/zkO9h9JSdozN49t0/hWGoD2dWgSO0Je6MytKEvD4DQXGeqNlBTB6tUXcWnRW+FcaKZ4KYqnxCtb1u8rFXUYgFykr2CbcJLSmw6ydEJ3EZ/NaZopRr+cU0W2m0HZ3qucw==" }}
```
### SIGNED Request Example (Ed25519)[​](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security)
**Note: It is highly recommended to use Ed25519 API keys as they will provide the best performance and security out of all supported key types.**
Here is a step-by-step guide on how to sign requests using an Ed25519 private key.
Key
Value
`apiKey`
`4yNzx3yWC5bS6YTwEkSRaC0nRmSQIIStAUOh1b6kqaBrTLIhjCpI5lJH8q8R8WNO`
These examples assume the private key is stored in the file `test-ed25519-prv.pem`.
**WARNING: DO NOT SHARE YOUR API KEY AND PRIVATE KEY WITH ANYONE.**
The example keys are provided here only for illustrative purposes.
Example of request with a symbol name comprised entirely of ASCII characters:
```
{ "id": "4885f793-e5ad-4c3b-8f6c-55d891472b71", "method": "order.place", "params": { "symbol": "BTCUSDT", "side": "SELL", "type": "LIMIT", "timeInForce": "GTC", "quantity": "0.01000000", "price": "52000.00", "recvWindow": 100, "timestamp": 1645423376532, "apiKey": "4yNzx3yWC5bS6YTwEkSRaC0nRmSQIIStAUOh1b6kqaBrTLIhjCpI5lJH8q8R8WNO", "signature": "------ FILL ME ------" }}
```
Example of a request with a symbol name containing non-ASCII characters:
```
{ "id": "4885f793-e5ad-4c3b-8f6c-55d891472b71", "method": "order.place", "params": { "symbol": "１２３４５６", "side": "BUY", "type": "LIMIT", "timeInForce": "GTC", "quantity": "0.01000000", "price": "0.10000000", "recvWindow": 5000, "timestamp": 1645423376532, "apiKey": "4yNzx3yWC5bS6YTwEkSRaC0nRmSQIIStAUOh1b6kqaBrTLIhjCpI5lJH8q8R8WNO", "signature": "------ FILL ME ------" }}
```
**Step 1: Construct the signature payload**
Take all request `params` except `signature` and **sort them in alphabetical order by parameter name**:
For the first set of example parameters (ASCII only):
Parameter
Value
`apiKey`
4yNzx3yWC5bS6YTwEkSRaC0nRmSQIIStAUOh1b6kqaBrTLIhjCpI5lJH8q8R8WNO
`price`
52000.00
`quantity`
0.01000000
`recvWindow`
100
`side`
SELL
`symbol`
BTCUSDT
`timeInForce`
GTC
`timestamp`
1645423376532
`type`
LIMIT
For the second set of example parameters (some non-ASCII characters):
Parameter
Value
`apiKey`
4yNzx3yWC5bS6YTwEkSRaC0nRmSQIIStAUOh1b6kqaBrTLIhjCpI5lJH8q8R8WNO
`price`
0.20000000
`quantity`
1.00000000
`recvWindow`
5000
`side`
SELL
`symbol`
１２３４５６
`timeInForce`
GTC
`timestamp`
1668481559918
`type`
LIMIT
Format parameters as `parameter=value` pairs separated by `&`. Values need to be encoded in UTF-8.
For the first set of example parameters (ASCII only), the signature payload should look like this:
```
apiKey=4yNzx3yWC5bS6YTwEkSRaC0nRmSQIIStAUOh1b6kqaBrTLIhjCpI5lJH8q8R8WNO&price=52000.00&quantity=0.01000000&recvWindow=100&side=SELL&symbol=BTCUSDT&timeInForce=GTC&timestamp=1645423376532&type=LIMIT
```
For the second set of example parameters (some non-ASCII characters), the signature payload should look like this:
```
apiKey=4yNzx3yWC5bS6YTwEkSRaC0nRmSQIIStAUOh1b6kqaBrTLIhjCpI5lJH8q8R8WNO&price=0.10000000&quantity=1.00000000&recvWindow=5000&side=BUY&symbol=１２３４５６&timeInForce=GTC&timestamp=1645423376532&type=LIMIT
```
**Step 2: Compute the signature**
1. Sign the UTF-8 bytes of your signature payload constructed in Step 1 using the Ed25519 private key.
2. Encode the output in base64.
Note that `apiKey`, the payload, and the resulting `signature` are **case-sensitive**.
You can cross-check your signature algorithm implementation with OpenSSL:
For the first set of example parameters (ASCII only):
```
echo -n "apiKey=4yNzx3yWC5bS6YTwEkSRaC0nRmSQIIStAUOh1b6kqaBrTLIhjCpI5lJH8q8R8WNO&price=52000.00&quantity=0.01000000&recvWindow=100&side=SELL&symbol=BTCUSDT&timeInForce=GTC&timestamp=1645423376532&type=LIMIT" \ | openssl dgst -sign ./test-ed25519-prv.pem \ | openssl enc -base64 -AEocljwPl29jDxWYaaRaOo4pJ9wEblFbklJvPugNscLLuKd5vHM2grWjn1z+rY0aJ7r/44enxHL6mOAJuJ1kqCg==
```
For the second set of example parameters (some non-ASCII characters):
```
echo -n "apiKey=4yNzx3yWC5bS6YTwEkSRaC0nRmSQIIStAUOh1b6kqaBrTLIhjCpI5lJH8q8R8WNO&price=0.10000000&quantity=1.00000000&recvWindow=5000&side=BUY&symbol=１２３４５６&timeInForce=GTC&timestamp=1645423376532&type=LIMIT" \ | openssl dgst -sign ./test-ed25519-prv.pem \ | openssl enc -base64 -AdtNHJeyKry+cNjiGv+sv5kynO9S40tf8k7D5CfAEQAp0s2scunZj+ovJdz2OgW8XhkB9G3/HmASkA9uY9eyFCA==
```
**Step 3: Add the signature to request `params`**
For the first set of example parameters (ASCII only):
```
{ "id": "4885f793-e5ad-4c3b-8f6c-55d891472b71", "method": "order.place", "params": { "symbol": "BTCUSDT", "side": "SELL", "type": "LIMIT", "timeInForce": "GTC", "quantity": "0.01000000", "price": "52000.00", "newOrderRespType": "ACK", "recvWindow": 100, "timestamp": 1645423376532, "apiKey": "4yNzx3yWC5bS6YTwEkSRaC0nRmSQIIStAUOh1b6kqaBrTLIhjCpI5lJH8q8R8WNO", "signature": "EocljwPl29jDxWYaaRaOo4pJ9wEblFbklJvPugNscLLuKd5vHM2grWjn1z+rY0aJ7r/44enxHL6mOAJuJ1kqCg==" }}
```
For the second set of example parameters (some non-ASCII characters):
```
{ "id": "4885f793-e5ad-4c3b-8f6c-55d891472b71", "method": "order.place", "params": { "symbol": "１２３４５６", "side": "SELL", "type": "LIMIT", "timeInForce": "GTC", "quantity": "1.00000000", "price": "0.10000000", "recvWindow": 5000, "timestamp": 1645423376532, "apiKey": "4yNzx3yWC5bS6YTwEkSRaC0nRmSQIIStAUOh1b6kqaBrTLIhjCpI5lJH8q8R8WNO", "signature": "dtNHJeyKry+cNjiGv+sv5kynO9S40tf8k7D5CfAEQAp0s2scunZj+ovJdz2OgW8XhkB9G3/HmASkA9uY9eyFCA==" }}
```
Here is a sample Python script performing all the steps above:
```
#!/usr/bin/env python3import base64import timeimport jsonfrom cryptography.hazmat.primitives.serialization import load_pem_private_keyfrom websocket import create_connection# Set up authenticationAPI_KEY='put your own API Key here'PRIVATE_KEY_PATH='test-prv-key.pem'# Load the private key.# In this example the key is expected to be stored without encryption,# but we recommend using a strong password for improved security.with open(PRIVATE_KEY_PATH, 'rb') as f: private_key = load_pem_private_key(data=f.read(), password=None)# Set up the request parametersparams = { 'apiKey': API_KEY, 'symbol': '１２３４５６', 'side': 'SELL', 'type': 'LIMIT', 'timeInForce': 'GTC', 'quantity': '1.0000000', 'price': '0.10000000', 'recvWindow': 5000}# Timestamp the requesttimestamp = int(time.time() * 1000) # UNIX timestamp in millisecondsparams['timestamp'] = timestamp# Sort parameters alphabetically by nameparams = dict(sorted(params.items()))# Compute the signature payloadpayload = '&'.join([f"{k}={v}" for k,v in params.items()]) # no percent encoding here!# Sign the requestsignature = base64.b64encode(private_key.sign(payload.encode('UTF-8')))params['signature'] = signature.decode('ASCII')# Send the requestrequest = { 'id': 'my_new_order', 'method': 'order.place', 'params': params}ws = create_connection("wss://ws-api.testnet.binance.vision/ws-api/v3")ws.send(json.dumps(request))result = ws.recv()ws.close()print(result)
```
- [SIGNED request security](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security)
- [Timing security](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security)
- [SIGNED request example (HMAC)](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security)
- [SIGNED request example (RSA)](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security)
- [SIGNED Request Example (Ed25519)](https://developers.binance.com/docs/binance-spot-api-docs/testnet/websocket-api/request-security)
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