legacy_signature

Constants


SIGHASH_ALL	SIGHASH types for Bitcoin transaction signing
SIGHASH_NONE	—
SIGHASH_SINGLE	—
SIGHASH_ANYONECANPAY	—


create_signature	Create a signature with known y_parity…
verify_ecdsa_signature_coords	Verify a Bitcoin ECDSA signature using Cairo’s built-in verification (legacy coords format) This function uses Cairo’s optimized ECDSA verification through public key recovery….
verify_ecdsa_signature	Verify a Bitcoin ECDSA signature This function works with the new ByteArray-based BitcoinPublicKey structure that properly represents Bitcoin’s 33-byte compressed or 65-byte uncompressed format….
verify_ecdsa_signature_auto_recovery	Verify a Bitcoin ECDSA signature with automatic y_parity detection This function tries both y_parity values (false and true) to find a match…
verify_der_signature	Verify a DER-encoded Bitcoin signature This function parses a DER-encoded signature and verifies it against the provided message hash and public key. Since DER signatures don’t…
parse_der_signature	Parse DER-encoded signature using ByteArray utilities…
mod_inverse	Calculate modular inverse using Fermat’s little theorem for prime modulus For secp256k1 curve order n (which is prime), we use Fermat’s little theorem:…
create_signature_hash	Create a signature hash for transaction signing using ByteArray…
verify_transaction_signature	Verify a signature against transaction data…