key_import.importSPKI.md

Function: importSPKI

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▸ importSPKI<KeyLikeType>(spki, alg, options?): Promise<KeyLikeType>

Imports a PEM-encoded SPKI string as a runtime-specific public key representation (KeyObject or CryptoKey).

Note: The OID id-RSASSA-PSS (1.2.840.113549.1.1.10) is not supported in Web Cryptography API, use the OID rsaEncryption (1.2.840.113549.1.1.1) instead for all RSA algorithms.

Type parameters

Name	Type
KeyLikeType	extends KeyLike = KeyLike

Parameters

Name	Type	Description
spki	string	PEM-encoded SPKI string
alg	string	(Only effective in Web Crypto API runtimes) JSON Web Algorithm identifier to be used with the imported key, its presence is only enforced in Web Crypto API runtimes. See Algorithm Key Requirements.
options?	PEMImportOptions	-

Returns

Promise<KeyLikeType>

Example

const algorithm = 'ES256'
const spki = `-----BEGIN PUBLIC KEY-----
MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEFlHHWfLk0gLBbsLTcuCrbCqoHqmM
YJepMC+Q+Dd6RBmBiA41evUsNMwLeN+PNFqib+xwi9JkJ8qhZkq8Y/IzGg==
-----END PUBLIC KEY-----`
const ecPublicKey = await jose.importSPKI(spki, algorithm)