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/ ECDSA Signature Parser

Signature (hex string)

About ECDSA Signatures

r: The x-coordinate of a random point on the elliptic curve (32 bytes)

s: The signature proof value (32 bytes)

v: Recovery ID that helps recover the public key (1 byte, optional)

Common v values:

27 or 28: Legacy Ethereum signatures
0 or 1: Modern EIP-2098 compact signatures
35+: EIP-155 signatures with chain ID

/ Selected Tool

ECDSA Signature Parser

Parse ECDSA signatures into r, s, v components

■ 01

What is an ECDSA signature?

ECDSA (Elliptic Curve Digital Signature Algorithm) signatures are used in Ethereum to prove ownership of an address. A signature consists of three components: r, s, and optionally v.

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How does it work?

ECDSA uses elliptic curve mathematics to create signatures. The signer generates a random point on the curve (r coordinate), then uses their private key and message hash to compute s. The v value (recovery ID) helps rec…

■ 03

Sample Cases

Covers Standard 65-byte signature, Compact 64-byte signature, and Legacy v values so you can compare common inputs and outputs quickly.

/ Code

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/ Integration

Source code from the selected tool, shown here alongside the live version on the right.

/ Source Code

TypeScript

typescript

// No external packages needed - pure TypeScript

interface SignatureComponents {
  r: string;
  s: string;
  v: number | null;
  yParity: number | null;
}

// Parse ECDSA signature into r, s, v components