diff options
Diffstat (limited to 'libgo/go/encoding/asn1/asn1.go')
| -rw-r--r-- | libgo/go/encoding/asn1/asn1.go | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libgo/go/encoding/asn1/asn1.go b/libgo/go/encoding/asn1/asn1.go index fd4dd68021b..d809dde2781 100644 --- a/libgo/go/encoding/asn1/asn1.go +++ b/libgo/go/encoding/asn1/asn1.go @@ -313,6 +313,12 @@ func parseBase128Int(bytes []byte, initOffset int) (ret, offset int, err error) } ret64 <<= 7 b := bytes[offset] + // integers should be minimally encoded, so the leading octet should + // never be 0x80 + if shifted == 0 && b == 0x80 { + err = SyntaxError{"integer is not minimally encoded"} + return + } ret64 |= int64(b & 0x7f) offset++ if b&0x80 == 0 { @@ -1031,6 +1037,12 @@ func setDefaultValue(v reflect.Value, params fieldParameters) (ok bool) { // Because Unmarshal uses the reflect package, the structs // being written to must use upper case field names. // +// After parsing b, any bytes that were leftover and not used to fill +// val will be returned in rest. When parsing a SEQUENCE into a struct, +// any trailing elements of the SEQUENCE that do not have matching +// fields in val will not be included in rest, as these are considered +// valid elements of the SEQUENCE and not trailing data. +// // An ASN.1 INTEGER can be written to an int, int32, int64, // or *big.Int (from the math/big package). // If the encoded value does not fit in the Go type, |