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markbrown4/rsa-key-pairs.rb

Created October 25, 2019 01:16
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RSA Key Pair signing in Ruby
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rsa-key-pairs.rb
data = 'hello'
# generate signature and public key
private_key = OpenSSL::PKey::RSA.new(2048)
signature = private_key.sign(OpenSSL::Digest::SHA256.new, data)
public_key = private_key.public_key
# verify signature with public key
rsa_key = OpenSSL::PKey::RSA.new(public_key.to_pem)
rsa_key.verify(OpenSSL::Digest::SHA256.new, signature, data)
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