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