Module ecdsa::hazmat

Low-level ECDSA primitives.

⚠️ Warning: Hazmat!

YOU PROBABLY DON’T WANT TO USE THESE!

These primitives are easy-to-misuse low-level interfaces.

If you are an end user / non-expert in cryptography, do not use these! Failure to use them correctly can lead to catastrophic failures including FULL PRIVATE KEY RECOVERY!

Traits

• DigestPrimitive
  Bind a preferred Digest algorithm to an elliptic curve type.
• SignPrimitive
  Try to sign the given prehashed message using ECDSA.
• VerifyPrimitive
  Verify the given prehashed message using ECDSA.

Functions

• bits2field
  Partial implementation of the bits2int function as defined in RFC6979 § 2.3.2 as well as SEC1 § 2.3.8.
• sign_prehashed
  Sign a prehashed message digest using the provided secret scalar and ephemeral scalar, returning an ECDSA signature.
• verify_prehashed
  Verify the prehashed message against the provided ECDSA signature.