v0.4.0

What's New

• Implemented SHA-384 hash function
• Added ec_point_fp_jacobi which represents EC point in Jacobi coordinates.
  Utilizing Jacobi coordinates yields up to 25% greater efficiency in EC point addition, and up to 32% greater efficiency when elliptic curve coefficients are a = 0 or a = -3 (secp256k1 and secp256r1, respectively).

What's Changed

• Optimized point multiplication in Homogeneous coordinates and function ec_mul_add_fast to use NAF method (non-adjacent form representation of signed integer) for EC point-scalar multiplication.
  This optimization resulted in an additional up to 10% increase in efficiency for EC point multiplication.
• Optimized EC point doubling for the cases where elliptic curve coefficient a = 0 or a = -3 (secp256k1 and secp256r1, respectively).
• Optimized signature verification times of ecdsa_verify function by using ec_point_fp_jacobi as point types for scalar-point multiplication & addition
• Fixed bugs

Full Changelog: v0.3.0...v0.4.0