currently importKey and exp

after RTFM specification: <a href="https://www.w3.org/TR/WebCryptoAPI/#ecdsa-operation

enable import/export raw ec-keys about webcrypto HOT 3 CLOSED

peculiarventures commented on June 16, 2024

enable import/export raw ec-keys

from webcrypto.

Comments (3)

microshine commented on June 16, 2024

Chrome doesn't support raw format for EC private key.

Script

var keys = await crypto.subtle.generateKey({name: "ECDSA", namedCurve: "P-256"}, true, ["sign", "verify"]);
var raw = await crypto.subtle.exportKey("raw", keys.privateKey); // Error

var raw = await crypto.subtle.exportKey("raw", keys.publicKey);
console.log(raw);

@peculiar/webcrypto throws AsnSchemaValidationError. Maybe it should be better to use a custom error for that.

AsnSchemaValidationError: Data does not match to PublicKeyInfo ASN1 schema. 
    at Function.fromASN (/Users/microshine/github/pv/webcrypto/node_modules/@peculiar/asn1-schema/build/cjs/parser.js:56:23)
    at Function.parse (/Users/microshine/github/pv/webcrypto/node_modules/@peculiar/asn1-schema/build/cjs/parser.js:29:26)
    at Function.exportKey (/Users/microshine/github/pv/webcrypto/build/webcrypto.js:1449:60)
    at EcdsaProvider.onExportKey (/Users/microshine/github/pv/webcrypto/build/webcrypto.js:1578:25)
    at EcdsaProvider.exportKey (/Users/microshine/github/pv/webcrypto/node_modules/webcrypto-core/build/webcrypto-core.js:203:33)
    at SubtleCrypto.exportKey (/Users/microshine/github/pv/webcrypto/node_modules/webcrypto-core/build/webcrypto-core.js:838:39)
    at main (/Users/microshine/github/pv/webcrypto/test.ts:7:35) {
  schemas: [ 'PublicKeyInfo' ]
}

@armfazh Do you have any ideas how EC private key raw must look like?

from webcrypto.

armfazh commented on June 16, 2024

Do you have any ideas how EC private key raw must look like?

For P-256, it's an arraybuffer of 32 bytes.

from webcrypto.

armfazh commented on June 16, 2024

after RTFM specification: https://www.w3.org/TR/WebCryptoAPI/#ecdsa-operations
Private keys cannot be exported in raw format, but they can be exported as jwk or pkcs8.
closing.

from webcrypto.

Recommend Projects