Module: JsonWebToken::Algorithm::Ecdsa

Extended by:
Common, Format::Asn1
Defined in:
lib/json_web_token/algorithm/ecdsa.rb

Constant Summary collapse

MAC_BYTE_COUNT = 
{
  '256' => 64, # secp256k1
  '384' => 96, # secp384r1
  '512' => 132 # secp521r1 note difference (not 128) due to using 521-bit integers
}

Constants included from Common

Common::SHA_BITS

Constants included from Format::Asn1

Format::Asn1::KEY_BITS

Class Method Summary collapse

Methods included from Common

digest_new, validate_key, validate_sha_bits

Methods included from Format::Asn1

der_to_signature, signature_to_der

Class Method Details

.signed(sha_bits, private_key, data) ⇒ Object 



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# File 'lib/json_web_token/algorithm/ecdsa.rb', line 19

def signed(sha_bits, private_key, data)
  validate_key(private_key, sha_bits)
  der = private_key.dsa_sign_asn1(ssl_digest_hash sha_bits, data)
  der_to_signature(der, sha_bits)
end

.verified?(signature, sha_bits, key, data) ⇒ Boolean 



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# File 'lib/json_web_token/algorithm/ecdsa.rb', line 25

def verified?(signature, sha_bits, key, data)
  validate_key(key, sha_bits)
  validate_signature_size(signature, sha_bits)
  der = signature_to_der(signature, sha_bits)
  key.dsa_verify_asn1(ssl_digest_hash(sha_bits, data), der)
end