bitcoin/bitcoin — pull request #5227 by sipa (2014-11-06 15:11:42+00:00)
Title: Deterministic signatures

The OpenSSL-based deterministic signing implementation is likely very temporary, as we may switch to libsecp256k1 for signing soon (#5220), but it allows testing. The signatures generated by the OpenSSL and libsecp256k1 based implementations should be identical, so the test cases are already useful.