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Change log

This gem follows Semantic Versioning 2.0.0. All classes and public methods are part of the public API, unless explicitly noted otherwise in their documentation.

0.4.0

Release on 2014-09-18

This release maintains API compatibility with version 0.3.0, except for the two constants that were removed.

Signatures produced with prior versions may be incompatible with signatures from this version.

  • Change the Hasher#hash_string method so that it can handle ECDSA groups that have a much smaller order than the number of bits they have (such as Curve25519).
  • Hasher now validates that its group's byte-length is equal to its hash algorithm's byte-length.
  • Remove support for ECDSA groups that have an order larger than the number of bits they have. Secp160k1 and Secp160r1 fall into this category because their order is larger than 2^160.
  • Remove the Secp160k1_Ripemd160 and Secp160r1_Ripemd160 constants, since their groups are no longer supported.

0.3.0

Released on 2014-09-15

This release breaks API compatibility with version 0.2.0.

  • Change PrivateKey, PublicKey, and Signature constructors such that they accept a required Hasher argument rather than an optional ECDSA::Group and hash_algorithm. The Hasher encapsulates these properties.
  • Change Hasher constructor so that group and hash_algorithm attributes are passed in as explicit arguments rather than options.
  • Remove RingSig.default_group and RingSig.defaut_hash_algorithm attributes. There are now no default algorithms.
  • Update gem dependency for ecdsa gem to 1.2.

This will hopefully be the last major API change for a while, but it still may change until 1.0 is released.

0.2.0

Released on 2014-09-12

This release breaks API compatibility with version 0.1.0.

  • Add support for ruby 1.9, including jruby-19mode.
  • Add RingSig.default_group and RingSig.defaut_hash_algorithm attributes.
  • Change Hasher constructor so that group and hash_algorithm attributes are passed in as options rather than explicit arguments.

0.1.0

Released on 2014-09-11

This release breaks API compatibility with version 0.0.1.

  • Split the Key class into PrivateKey and PublicKey, which better encapsulate the functionality of each.
  • The sign and key_image methods are placed in the PrivateKey class.
  • Remove the drop_private_key method from Key. Instead, a new method simply called public_key is included in both PrivateKey and PublicKey.
  • Add methods to_hex, to_octet, from_hex, and from_octet to both PrivateKey and PublicKey classes.
  • Add == methods to PrivateKey and PublicKey
  • Add point attribute to PublicKey which stores the actual public key.
  • Add point method to PrivateKey which references the public key's point.
  • Add value attribute to PrivateKey which stores the actual private key.

0.0.1

Released on 2014-09-09

All core functionality is implemented:

  • Key class
    • sign method
    • key_image method
    • drop_private_key method
    • public_key and private_key attributes
    • group and hash_algorithm attributes
  • Signature class
    • verify method
    • components method
    • to_hex, to_der, from_hex, and from_der methods
    • key_image, c_array, and r_array attributes
    • group and hash_algorithm attributes
  • Hasher class
    • hash_string method
    • hash_array method
    • hash_point method
    • shuffle method
    • group and algorithm attributes