expectedErr: "invalid UTF-8 string",
		},
		{
			name:     "BMPString",
			tag:      cryptobyte_asn1.Tag(asn1.TagBMPString),
			value:    []byte{80, 81},
			expected: string("偑"),
		},
		{
			name:        "BMPString (invalid length)",
			tag:         cryptobyte_asn1.Tag(asn1.TagBMPString),
			value:       []byte{255},
			expectedErr: "invalid BMPString",
		},
		{
			name:     "IA5String",

		bmpString = bmpString[:l-2]
	}

	s := make([]uint16, 0, len(bmpString)/2)
	for len(bmpString) > 0 {
		s = append(s, uint16(bmpString[0])<<8+uint16(bmpString[1]))
		bmpString = bmpString[2:]
	}

	return string(utf16.Decode(s)), nil
}

// A RawValue represents an undecoded ASN.1 object.
type RawValue struct {
	Class, Tag int
	IsCompound bool
	Bytes      []byte

		// handful of CA certificates that contain it. At least
		// one of which will not expire until 2027.
		b == '&'
}

// parseASN1String parses the ASN.1 string types T61String, PrintableString,
// UTF8String, BMPString, IA5String, and NumericString. This is mostly copied
// from the respective encoding/asn1.parse... methods, rather than just
// increasing the API surface of that package.