Fuzz introspector: oaep
For issues and ideas: https://github.com/ossf/fuzz-introspector/issues

Fuzz blockers

The followings are the branches where fuzzer fails to bypass.

Unique non-covered Complexity Unique Reachable Complexities Unique Reachable Functions All non-covered Complexity All Reachable Complexity Function Name Function Callsite Blocked Branch
0 0 None 8 8 Botan::allocate_memory(unsignedlong,unsignedlong) call site: 00000 /src/botan/src/lib/utils/mem_ops.cpp:27

Fuzzer calltree

0 LLVMFuzzerTestOneInput [function] [call site] 00000
1 fuzz(unsigned char const*, unsigned long) [function] [call site] 00001
2 __cxa_guard_acquire [call site] 00002
2 Botan::oaep_find_delim(unsigned char&, unsigned char const*, unsigned long, std::__1::vector > const&) [function] [call site] 00003
3 void Botan::CT::poison (unsigned char const*, unsigned long) [function] [call site] 00004
4 void Botan::ignore_params (unsigned char const*&, unsigned long&) [function] [call site] 00005
5 void Botan::ignore_param (unsigned char const*&) [function] [call site] 00006
3 Botan::CT::Mask ::set() [function] [call site] 00007
4 Botan::CT::Mask ::Mask(unsigned char) [function] [call site] 00008
3 Botan::CT::Mask ::operator|=(Botan::CT::Mask ) [function] [call site] 00009
4 Botan::CT::Mask ::value() const [function] [call site] 00010
3 Botan::ct_compare_u8(unsigned char const*, unsigned char const*, unsigned long) [function] [call site] 00011
4 Botan::CT::Mask ::is_zero(unsigned char) [function] [call site] 00012
5 unsigned char Botan::ct_is_zero (unsigned char) [function] [call site] 00013
6 unsigned char Botan::expand_top_bit (unsigned char) [function] [call site] 00014
5 Botan::CT::Mask ::Mask(unsigned char) [function] [call site] 00015
3 Botan::CT::Mask ::is_zero(unsigned char) [function] [call site] 00016
3 Botan::CT::Mask ::operator~() const [function] [call site] 00017
4 Botan::CT::Mask ::value() const [function] [call site] 00018
3 Botan::CT::copy_output(Botan::CT::Mask , unsigned char const*, unsigned long, unsigned long) [function] [call site] 00019
4 void Botan::CT::poison (unsigned long const*, unsigned long) [function] [call site] 00020
4 Botan::CT::Mask Botan::CT::Mask ::expand (Botan::CT::Mask ) [function] [call site] 00021
5 Botan::CT::Mask ::value() const [function] [call site] 00022
4 Botan::CT::Mask ::is_gt(unsigned long, unsigned long) [function] [call site] 00023
5 Botan::CT::Mask ::is_lt(unsigned long, unsigned long) [function] [call site] 00024
6 unsigned long Botan::expand_top_bit (unsigned long) [function] [call site] 00025
6 Botan::CT::Mask ::Mask(unsigned long) [function] [call site] 00026
4 Botan::CT::Mask ::select(unsigned long, unsigned long) const [function] [call site] 00027
5 Botan::CT::Mask ::value() const [function] [call site] 00028
5 unsigned long Botan::choose (unsigned long, unsigned long, unsigned long) [function] [call site] 00029
4 void Botan::CT::unpoison (unsigned char const*, unsigned long) [function] [call site] 00030
5 void Botan::ignore_params (unsigned char const*&, unsigned long&) [function] [call site] 00031
4 Botan::CT::Mask ::is_equal(unsigned long, unsigned long) [function] [call site] 00032
5 Botan::CT::Mask ::is_zero(unsigned long) [function] [call site] 00033
4 Botan::CT::Mask ::if_set_return(unsigned long) const [function] [call site] 00034
4 void Botan::CT::unpoison (unsigned long const&) [function] [call site] 00035
5 void Botan::ignore_params (unsigned long const&) [function] [call site] 00036
3 Botan::CT::Mask ::is_zero(unsigned char) [function] [call site] 00037
3 Botan::CT::Mask ::is_equal(unsigned char, unsigned char) [function] [call site] 00038
3 Botan::CT::operator&(Botan::CT::Mask , Botan::CT::Mask ) [function] [call site] 00039
4 Botan::CT::Mask ::value() const [function] [call site] 00040
3 Botan::CT::operator|(Botan::CT::Mask , Botan::CT::Mask ) [function] [call site] 00041
4 Botan::CT::Mask ::value() const [function] [call site] 00042
3 Botan::CT::Mask ::if_set_return(unsigned char) const [function] [call site] 00043
3 Botan::CT::Mask ::operator&=(Botan::CT::Mask ) [function] [call site] 00044
4 Botan::CT::Mask ::value() const [function] [call site] 00045
2 abort [call site] 00046
2 (anonymous namespace)::ref_oaep_unpad(unsigned char&, unsigned char const*, unsigned long, std::__1::vector > const&) [function] [call site] 00047
2 abort [call site] 00048
2 Botan::hex_encode(std::__1::span , bool) [function] [call site] 00049
3 Botan::hex_encode(unsigned char const*, unsigned long, bool) [function] [call site] 00050
4 Botan::hex_encode(char*, unsigned char const*, unsigned long, bool) [function] [call site] 00051
5 Botan::(anonymous namespace)::hex_encode_nibble(unsigned char, bool) [function] [call site] 00052
6 Botan::CT::Mask ::is_lt(unsigned char, unsigned char) [function] [call site] 00053
6 Botan::CT::Mask ::select(unsigned char, unsigned char) const [function] [call site] 00054
5 Botan::(anonymous namespace)::hex_encode_nibble(unsigned char, bool) [function] [call site] 00055
2 abort [call site] 00056
2 Botan::hex_encode(std::__1::span , bool) [function] [call site] 00057
2 abort [call site] 00058
2 (anonymous namespace)::all_zeros(std::__1::vector > const&) [function] [call site] 00059
2 abort [call site] 00060
2 (anonymous namespace)::all_zeros(std::__1::vector > const&) [function] [call site] 00061
2 abort [call site] 00062
2 Botan::hex_encode(std::__1::span , bool) [function] [call site] 00063
2 abort [call site] 00064