OpenSSL "rsautl -encrypt" vs. "rsautl -verify"

Home > OpenSSL

Q

What is the difference between "rsautl -encrypt" and "rsautl -verify" commands?

✍: FYIcenter.com

A

There is only 1 difference between "rsautl -encrypt" and "rsautl -verify" commands:

1. "rsautl -encrypt" and "rsautl -verify" commands apply PKCS#1 v1.5 padding differently:

"rsautl -encrypt" adds PKCS#1 v1.5 padding before applying RSA encryptin with an RSA public key.
"rsautl -verify" removes PKCS#1 v1.5 padding after applying RSA decryptin with an RSA public key.

So if we are using no padding, "rsautl -encrypt" and "rsautl -verify" have no differences, because RSA encryption and RSA decryption are identical algorithms. In other words, "rsautl -encrypt -raw" and "rsautl -sign -raw" are identical commands.

⇒ OpenSSL "rsautl -verify -raw" for RSA Public Key Encryption

⇐ OpenSSL "rsautl -encrypt" vs. "rsautl -sign"

⇑ OpenSSL "rsautl" Command for RSA Keys

⇑⇑ OpenSSL Tutorials

2017-03-11, ∼4586🔥, 0💬

OpenSSL "rsautl -verify" - RSA Signature Verification
What is the purpose of the OpenSSL "rsautl -verify" command? Can I use it to verify a signed document? Yes, you can use OpenSSL "rsautl -verify" command to verify a signed document. But you need other OpenSSL commands to generate a digest from the document first. For example, you received 3 files as... 2017-03-25, ≈12🔥, 0💬

OpenSSL "rsautl -sign" - RSA Signature Generation
What is the purpose of the OpenSSL "rsautl -sign" command? Can I use it to sign a document? Yes, you can use OpenSSL "rsautl -sign" command to sign a document. But you need other OpenSSL commands to generate a digest from the document first as shown in the following test: C:\Users\fyicenter>d... 2017-04-04, ∼9655🔥, 0💬

OpenSSL "genrsa" Command Options
What can I use OpenSSL "genrsa" command for? What are options supported by the "genrsa" command? OpenSSL "genrsa" command is a utility to generate RSA (Rivest, Shamir and Adleman) private key and public key pairs. Here are options supported by the "genrsa" command: C:\Users\fyicenter>\loc al\o... 2017-02-24, ∼6340🔥, 0💬

OpenSSL "rsautl -encrypt" vs. "rsautl -sign"
What is the difference between "rsautl -encrypt" and "rsautl -sign" commands? There are 2 differences between "rsautl -encrypt" and "rsautl -sign" commands: 1. "rsautl -encrypt" and "rsautl -sign" commands take different RSA keys: "rsautl -encrypt" only accepts an RSA public key and performs RSA enc... 2017-03-25, ∼6260🔥, 0💬

OpenSSL "rsautl -encrypt" vs. "rsautl -verify"
What is the difference between "rsautl -encrypt" and "rsautl -verify" commands? There is only 1 difference between "rsautl -encrypt" and "rsautl -verify" commands: 1. "rsautl -encrypt" and "rsautl -verify" commands apply PKCS#1 v1.5 padding differently: "rsautl -encrypt" adds PKCS#1 v1.5 padding bef... 2017-03-11, ∼4587🔥, 0💬

OpenSSL "genrsa" - Generate RSA Key Pair
How to generate a new RSA key pair using OpenSSL "genrsa" command? If you need a new RSA key pair in order to create a new certificate, you can use the OpenSSL "genrsa" command as shown below: C:\Users\fyicenter>\loc al\openssl\openssl.exeOpenSSL> genrsa -out my_rsa.key Generating RSA ... 2017-02-24, ∼4463🔥, 0💬

OpenSSL Signing Documents with RSA Keys
What is the process of signing a document with RSA keys using OpenSSL commands? I was told to deliver a document with digital signature. Here are steps your need to follow to sign a document with your RSA private key using OpenSSL commands: 1. Get the document to be signed ready. 2. Generate a diges... 2017-04-04, ∼3718🔥, 0💬

OpenSSL "rsautl -verify -raw" for RSA Public Key Encryption
2017-03-11, ∼3486🔥, 0💬

OpenSSL Verify Signed Documents with RSA Keys
What is the process of verifying the signed document with RSA keys using OpenSSL commands? I received a signed document and was to verify it with senders RSA public key. Here are steps your need to follow to verify a signed document with sender's RSA public key using OpenSSL commands: 1. Verify that... 2017-03-27, ∼3138🔥, 0💬

All rights in the contents of this web site are reserved by the individual author. fyicenter.com does not guarantee the truthfulness, accuracy, or reliability of any contents.