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Do not know how to use linux's openssl command encryption algorithm? In fact, it is not difficult to solve this problem. Let the editor take you to learn how to solve it. I hope you will gain a lot after reading this article.

OpenSSL is a powerful secure socket layer cipher library that includes major cryptographic algorithms, commonly used key and certificate encapsulation management functions, and SSL protocols, and provides rich applications for testing or other purposes. The corresponding command is the openssl command, which is used for encryption algorithms.

Syntax format: openssl [parameters]

Common parameters:

Reference example

Use the SHA1 algorithm to calculate the hash value of the file file.txt and output it to stdout:

[root@linuxcool ~] # openssl dgst-sha1 file.txt

Use the SHA1 algorithm to calculate the hash value of the file file.txt and output it to the file digest.txt:

[root@linuxcool ~] # openssl sha1-out digest.txt file.txt

Symmetric encryption application example: encrypt the file plaintext.doc with the CBC mode of the DES3 algorithm, and output the encryption result to the file ciphertext.bin:

[root@linuxcool] # openssl enc-des3-salt-in plaintext.doc-out ciphertext.bin

The OFB mode of the DES3 algorithm decrypts the file ciphertext.bin. The password provided is trousers and output to the file plaintext.doc:

[root@linuxcool] # openssl enc-des-ede3-ofb-d-in ciphertext.bin-out plaintext.doc-pass pass:trousers

Generate a 1024-bit DSA parameter set and output it to the file dsaparam.pem:

[root@linuxcool ~] # openssl dsaparam-out dsaparam.pem 1024

Use the parameter file dsaparam.pem to generate the DSA private key, encrypt it with 3DES and output it to the file dsaprivatekey.pem:

[root@linuxcool] # openssl gendsa-out dsaprivatekey.pem-des3 dsaparam.pem

Generate a 1024-bit RSA private key, encrypt it with 3DES with a password of trousers, and output it to the file rsaprivatekey.pem:

[root@linuxcool] # openssl genrsa-out rsaprivatekey.pem-passout pass:trousers-des3 1024 Thank you for reading this article carefully. I hope it will be helpful for everyone to share the encryption algorithm using linux's openssl command. At the same time, I also hope you will support us, pay attention to the industry information channel, and find out if you encounter problems. Detailed solutions are waiting for you to learn!

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