The following Ruby signature examples use the OpenSSL cryptography toolkit.

Sign data

Signing data using RSA private key with PKCS1 v1.5 padding and SHA256 hash:

require 'openssl'
    def sign_data(key, data)
    key.sign(, data)

Verify signature

Decrypt a package using RSA private key with PKCS1-OAEP padding:

require 'openssl'
def verify_sign(key, signature, data)
    # Verifies with a public key that the data was signed with their private key
    pubkey = key.public_key
    if pubkey.verify(, signature, data)
        puts 'the signature is valid'
        puts 'the signature is invalid'

User Contributed

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