Zig 0.17.0-dev (Split by item)

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parseVersion

Certificate.parseVersion

pub fn parseVersion(bytes: []const u8, version_elem: der.Element) ParseVersionError!Version

File

lib/std/crypto/Certificate.zig:758

Code

pub fn parseVersion(bytes: []const u8, version_elem: der.Element) ParseVersionError!Version {
    if (@as(u8, @bitCast(version_elem.identifier)) != 0xa0)
        return .v1;

    if (version_elem.slice.end - version_elem.slice.start != 3)
        return error.CertificateFieldHasInvalidLength;

    const encoded_version = bytes[version_elem.slice.start..version_elem.slice.end];

    if (mem.eql(u8, encoded_version, "\x02\x01\x02")) {
        return .v3;
    } else if (mem.eql(u8, encoded_version, "\x02\x01\x01")) {
        return .v2;
    } else if (mem.eql(u8, encoded_version, "\x02\x01\x00")) {
        return .v1;
    }

    return error.UnsupportedCertificateVersion;
}