sigil secp256k1

Validate a 32-byte secp256k1 secret key.

Derive a 33-byte compressed public key from a 32-byte secret key.

Parse a 33-byte or 65-byte serialized public key.

Convert a serialized public key into a 32-byte x-only public key.

Add a 32-byte tweak to a serialized public key.

Multiply a serialized public key by a 32-byte scalar.

Add two serialized public keys and return a compressed public key.

Add an x-only tweak to a 32-byte x-only public key.

Add a 32-byte tweak to a secret key.

Sign a 32-byte message hash with ECDSA, returning compact r||s.

Verify a compact ECDSA signature with a serialized public key.

Parse a DER-encoded ECDSA signature to compact r||s.

Serialize a compact ECDSA signature to DER.

Sign a 32-byte message with a 96-byte keypair.

Verify a 64-byte Schnorr signature with a 32-byte x-only pubkey.

Create a 96-byte secp256k1 keypair from a secret key.

Extract a compressed public key from a keypair.

Extract the serialized 32-byte x-only public key from a keypair.

Extract the serialized 32-byte x-only public key and parity from a keypair.

Add a 32-byte x-only tweak to a keypair, returning the tweaked keypair.