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create public/private key objects out of raw keys

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This is needed for `deriveKey()` and `deriveBits()`.
This commit is contained in:
Halil Durak
2026-01-14 13:18:12 +03:00
parent b26fb0e6c7
commit 0a8be77233
1 changed files with 31 additions and 1 deletions
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32
src/browser/webapi/SubtleCrypto.zig
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@@ -383,6 +383,7 @@ pub const CryptoKey = struct {
// X25519.
/// Create a pair of X25519.
fn initX25519(
extractable: bool,
key_usages: []const []const u8,
@@ -419,6 +420,34 @@ pub const CryptoKey = struct {
// There's no info about whether this can fail; so I assume it cannot.
crypto.X25519_keypair(@ptrCast(public_value), @ptrCast(private_key));
// Create EVP_PKEY for public key.
// Seems we can use `EVP_PKEY_from_raw_private_key` for this, Chrome
// prefer not to, yet BoringSSL added it and recommends instead of what
// we're doing currently.
const public_pkey = crypto.EVP_PKEY_new_raw_public_key(
crypto.EVP_PKEY_X25519,
null,
public_value.ptr,
public_value.len,
);
if (public_pkey == null) {
return error.OutOfMemory;
}
// Create EVP_PKEY for private key.
// Seems we can use `EVP_PKEY_from_raw_private_key` for this, Chrome
// prefer not to, yet BoringSSL added it and recommends instead of what
// we're doing currently.
const private_pkey = crypto.EVP_PKEY_new_raw_private_key(
crypto.EVP_PKEY_X25519,
null,
private_key.ptr,
private_key.len,
);
if (private_pkey == null) {
return error.OutOfMemory;
}
const private = try page._factory.create(CryptoKey{
._type = .x25519,
._extractable = extractable,
@@ -431,7 +460,8 @@ pub const CryptoKey = struct {
const public = try page._factory.create(CryptoKey{
._type = .x25519,
._extractable = extractable,
// Public keys are always extractable.
._extractable = true,
// Always empty for public key.
._usages = 0,
._key = public_value,