openssl hmacsha256
时间: 2023-10-11 15:05:18 浏览: 70
OpenSSL is a widely-used open-source cryptography library that provides various cryptographic functions including hashing, encryption, and decryption. HMAC-SHA256 is a secure hashing algorithm that uses a combination of SHA-256 (Secure Hash Algorithm) and a secret key to create a message authentication code (MAC).
To use OpenSSL to compute HMAC-SHA256, you can use the following command:
```
openssl dgst -sha256 -hmac "your_secret_key" your_message.txt
```
Here, `-sha256` specifies that the SHA-256 hash function will be used, `-hmac "your_secret_key"` specifies the secret key used for the HMAC computation, and `your_message.txt` is the file containing the message to be hashed.
Alternatively, you can also use the `openssl sha256` command with the `-hmac` option to compute HMAC-SHA256:
```
openssl sha256 -hmac "your_secret_key" your_message.txt
```
Both of these commands will output the HMAC-SHA256 hash value of the message using the specified secret key.