![Forrest logo](/images/logo.png)
openssl-dgst:tldr:b9f99
This command uses the OpenSSL tool with the dgst
command to verify the authenticity and integrity of a digital signature.
The components of the command are as follows:
-
openssl
: This invokes the OpenSSL tool, which is a widely-used library for secure communications and cryptographic operations. -
dgst
: This is a sub-command of OpenSSL used for message digest operations. -
-verify ${public_key_file}
: This option specifies the public key file to be used for verifying the digital signature. The${public_key_file}
variable should be replaced with the actual path to the public key file. -
-signature ${signature_file}
: This option specifies the file containing the digital signature to be verified. The${signature_file}
variable should be replaced with the actual path to the signature file. -
-sigopt rsa_padding_mode:pss
: This option specifies the signature option to use. In this case, it sets the RSA padding mode to PSS (Probabilistic Signature Scheme), which is a modern and more secure padding scheme compared to older schemes like PKCS#1 v1.5 padding. -
${signature_message_file}
: This is the file that contains the message corresponding to the digital signature. The${signature_message_file}
variable should be replaced with the actual path to the signature message file.
Putting it all together, this command verifies the digital signature in ${signature_file}
using the public key in ${public_key_file}
and the message in ${signature_message_file}
. It uses the RSA-PSS padding scheme for the verification process.