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allow single character strings with sc_hex_to_bin 

fixes https://github.com/OpenSC/OpenSC/issues/1684
fixes https://github.com/OpenSC/OpenSC/issues/1669
This commit is contained in:
Frank Morgner 2019-05-25 00:28:58 +02:00
parent e3ff3be4fe
commit 3a665f6479
1 changed files with 8 additions and 0 deletions
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8
src/libopensc/sc.c
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@ -99,6 +99,14 @@ int sc_hex_to_bin(const char *in, u8 *out, size_t *outlen)
}
}
if (left == *outlen && 1 == byte_needs_nibble && 0 != left) {
/* no output written so far, but we have a valid nibble in the upper
* bits. Allow this special case. */
*out = (u8) byte>>4;
left--;
byte_needs_nibble = 0;
}
/* for ease of implementation we only accept completely hexed bytes. */
if (byte_needs_nibble) {
r = SC_ERROR_INVALID_ARGUMENTS;