Never mind. Turns out you can't actually do this directly with SecKeyCreateWithData, you have to switch to Swift CryptoKit. See:
https://developer.apple.com/forums/thread/680572
func createSecKeyWithPEMSecp256r1Private(_ pem: String) throws -> SecKey {
let privateKeyCK = try P256.Signing.PrivateKey(pemRepresentation: pem)
let x963Data = privateKeyCK.x963Representation
var errorQ: Unmanaged<CFError>? = nil
guard let privateKeySF = SecKeyCreateWithData(x963Data as NSData, [
kSecAttrKeyType: kSecAttrKeyTypeECSECPrimeRandom,
kSecAttrKeyClass: kSecAttrKeyClassPrivate,
] as NSDictionary, &errorQ) else {
throw errorQ!.takeRetainedValue()
}
return privateKeySF
}
Topic:
Privacy & Security
SubTopic:
General
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