diff options
| -rw-r--r-- | lib/util/asn1.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/lib/util/asn1.c b/lib/util/asn1.c index b716da63c0..c23bf65b8d 100644 --- a/lib/util/asn1.c +++ b/lib/util/asn1.c @@ -885,10 +885,19 @@ bool asn1_read_ContextSimple(struct asn1_data *data, uint8_t num, DATA_BLOB *blo bool asn1_read_implicit_Integer(struct asn1_data *data, int *i) { uint8_t b; + bool first_byte = true; *i = 0; while (!data->has_error && asn1_tag_remaining(data)>0) { if (!asn1_read_uint8(data, &b)) return false; + if (first_byte) { + if (b & 0x80) { + /* Number is negative. + Set i to -1 for sign extend. */ + *i = -1; + } + first_byte = false; + } *i = (*i << 8) + b; } return !data->has_error; |