1.7 KiB
wolfSSL Signature Example
This directory contains:
A simple example of using wolfSSL to sign and verify binary data. It supports RSA and ECC for signing and MD2, MD4, MD5, SHA, SHA256, SHA384 and SHA512.
This example creates a signature from a hash of the file and signs it using a generated key. Then it performs a verification using the signature and public key.
Compiling and Running the Example
$ make
$ ./firmware [filename] [sig] [hash]
Usage
Usage: signature : 1=ECC (def), 2=RSA, 3=RSA (w/DER Encoding) : 1=MD2, 2=MD4, 3=MD5, 4=SHA, 5=SHA256 (def), 6=SHA384, 7=SHA512, 8=MD5+SHA
------------------ UPDATE ----------------- April 11 2017:
Added ED25519 directory
ED25519 directory contains:
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App "gen_key_files.c" to generate public/private keys and output keys to .der formatted files.
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genkeybuffers.pl - a perl script to write the header file "test_keys.h" using the .der formatted files output from applicaton "gen_key_files.c"
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App "sign_and_verify.c" to use the "test_keys.h" header file buffers for importing the public and private keys. App will then sign a msg with the private key and verify that signature using the public key
------------------ UPDATE ----------------- November 13 2018:
Added rsa_buffer directory
rsa_buffer directory contains:
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App "sign.c" to generate a signature using a DER encoded private key into a buffer. Prints out a hex encoding of signature.
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App "verify.c" to verify a signature using a DER encoded public key in and binary signature in buffers.
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Script sign_vfy.sh builds sign, creates a signature with "sign", builds verify with message and signature generated and verifies the signature with "verify".