openssl dgst

OpenSSL command to generate digest values and perform signature operations. More information: https://www.openssl.org/docs/manmaster/man1/openssl-dgst.html.

• Calculate the SHA256 digest for a file, saving the result to a specific file:

openssl dgst -sha256 -binary -out output_file input_file

• Sign a file using an RSA key, saving the result to a specific file:

openssl dgst -sign private_key_file -sha256 -sigopt rsa_padding_mode:pss -out output_file input_file

• Verify an RSA signature:

openssl dgst -verify public_key_file -signature signature_file -sigopt rsa_padding_mode:pss signature_message_file

• Sign a file using and ECDSA key:

openssl dgst -sign private_key_file -sha256 -out output_file input_file

• Verify an ECDSA signature:

openssl dgst -verify public_key_file -signature signature_file signature_message_file