Import std.crypto.signatures

EcdsaP256

std.crypto.signatures

struct

Public Struct EcdsaP256

ECDSA on NIST's P-256 with SHA-256 (ES256): a private key is 32 bytes, a public key its point, uncompressed, 65 bytes, and a signature r then s, 64 bytes.

Examples

Local privateKey = EcdsaP256.NewPrivateKey()
Local publicKey = EcdsaP256.PublicKeyOf(privateKey)
Expect(publicKey.Count == 65)
Local signature = EcdsaP256.Sign(privateKey, "a message")
Expect(EcdsaP256.Verify(publicKey, "a message", signature))

std/crypto/signatures.fb, line 100

Public Static Method NewPrivateKey(): UInt8[] static method #

A new random private key.
@PanicsAtCaller Public Static Method PublicKeyOf(privateKey: UInt8[]): UInt8[] static method #

privateKey's public key. Panics unless privateKey is a P-256 private key.
@PanicsAtCaller Public Static Method Sign(privateKey: UInt8[], message: UInt8[]): UInt8[] static method #

message's signature with privateKey, deterministic, as RFC 6979 makes it, so it needs no random number. Panics unless privateKey is a P-256 private key.
@PanicsAtCaller Public Static Method Sign(privateKey: UInt8[], text: String): UInt8[] static method #

text's signature, by its UTF-8 bytes, with privateKey. Panics unless privateKey is 32 bytes, a number from 1 up to the curve's order.
Public Static Method Verify(publicKey: UInt8[], message: UInt8[], signature: UInt8[]): Bool static method #

Whether signature is publicKey's of message.
Public Static Method Verify(publicKey: UInt8[], text: String, signature: UInt8[]): Bool static method #

Whether signature is publicKey's of text's UTF-8 bytes.

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